Showing results 1 to 50 out of 1,994
AstroNote 2025-221
Type: Object/s-Discovery/Classification
Released: 2025-07-19 23:32:44
NTT spectroscopic classifications of optical transients during the ESO Summer Research Programme
G. Csoernyei, M. Vioque, M. Mirabile (ESO), G. Fernandes Goncalves (Federal University of Technology), L. Hauer (Univer…
Keywords: Transient, Supernova, Optical, Spectroscopy
Related Objects:
2025qrn [ATLAS25hri]
RA, DEC:14:51:38.533, -11:55:07.82
(222.910555, -11.918838)
Redshift:0.08
Type:SN II
See object 2025qrn [ATLAS25hri]
,
2025ric [ZTF25abbonxp]
RA, DEC:22:05:42.181, +22:11:22.13
(331.425754, 22.189482)
Redshift:0.07
Type:SN Ia
See object 2025ric [ZTF25abbonxp]
,
2025rio [ZTF25abbssqu]
RA, DEC:17:22:00.626, +17:09:29.53
(260.502610, 17.158202)
Redshift:0.14
Type:SN Ia
See object 2025rio [ZTF25abbssqu]
,
2025rjh [ATLAS25hty]
RA, DEC:14:05:56.026, -30:31:06.13
(211.483442, -30.518370)
Redshift:0.1
Type:SN Ia-91T-like
See object 2025rjh [ATLAS25hty]
,
2025ocg [ATLAS25ghg]
RA, DEC:00:35:15.726, -44:04:47.98
(8.815525, -44.079994)
Redshift:0
Type:Varstar
See object 2025ocg [ATLAS25ghg]
This report includes classifications of two Type Ia SNe, one 91T-like SN Ia, one Type II supernova, and a variable star. All classifications were performed based on observations taken during the ESO …
AstroNote 2025-220
Type: Object/s-Discovery/Classification
Released: 2025-07-19 18:22:41
NTT spectroscopic classifications of optical transients during the ESO Summer Research Programme
G. Csoernyei, M. Vioque, M. Mirabile (ESO), G. Fernandes Goncalves (Federal University of Technology), L. Hauer (Univer…
Keywords: Transient, Supernova, Optical, Spectroscopy
Related Objects:
2025rbu [GOTO25evm]
RA, DEC:16:19:47.861, +09:08:59.94
(244.949420, 9.149983)
Redshift:0.12
Type:SN Ia
See object 2025rbu [GOTO25evm]
,
2025rig [ZTF25abazqup]
RA, DEC:18:25:32.655, +26:30:14.08
(276.386062, 26.503910)
Redshift:0.09
Type:Galaxy
See object 2025rig [ZTF25abazqup]
,
2025rga [ATLAS25hso]
RA, DEC:20:39:11.609, -42:30:22.82
(309.798370, -42.506340)
Redshift:0.09
Type:SN Ia
See object 2025rga [ATLAS25hso]
,
2025qkw [ZTF25aazvkec]
RA, DEC:23:08:32.063, -12:17:32.51
(347.133594, -12.292365)
Redshift:0.09
Type:SN Ia
See object 2025qkw [ZTF25aazvkec]
,
2025qtf [ATLAS25hee]
RA, DEC:01:58:15.354, -76:54:51.28
(29.563976, -76.914244)
Redshift:0.05
Type:SN Ia
See object 2025qtf [ATLAS25hee]
,
2025rca [ATLAS25hte]
RA, DEC:02:09:01.152, -28:42:23.36
(32.254801, -28.706490)
Redshift:0.07
Type:SN Ia-91T-like
See object 2025rca [ATLAS25hte]
,
2025oje [ATLAS25hfz]
RA, DEC:23:12:39.451, +00:31:37.68
(348.164378, 0.527133)
Redshift:0.033
Type:SN II
See object 2025oje [ATLAS25hfz]
,
2025pbc [ATLAS25gqv]
RA, DEC:20:27:35.014, -29:01:18.46
(306.895893, -29.021794)
Redshift:0.105
Type:SN Ia
See object 2025pbc [ATLAS25gqv]
This report includes classifications of five Type Ia SNe, one 91T-like SN Ia, one Type II supernova, and a galaxy. All classifications were performed based on observations taken during the ESO Summer…
AstroNote 2025-219
Type: Object/s-Discovery/Classification
Released: 2025-07-18 14:48:15
NTT spectroscopic classifications of optical transients during the ESO Summer Research Programme
G. Csoernyei, M. Mirabile, M. Vioque (ESO), G. Fernandes Goncalves (Federal University of Technology), L. Hauer (Unive…
Keywords: Transient, Supernova, Optical, Spectroscopy
Related Objects:
2025pld [ATLAS25gqz]
RA, DEC:22:09:55.635, -34:57:42.10
(332.481813, -34.961695)
Redshift:0.03
Type:SN II
See object 2025pld [ATLAS25gqz]
,
2025qpa [GOTO25eqg]
RA, DEC:15:59:37.625, +15:18:37.43
(239.906769, 15.310398)
Redshift:0.038
Type:SN II
See object 2025qpa [GOTO25eqg]
,
2025qzz [ATLAS25hod]
RA, DEC:00:41:57.078, -47:54:40.14
(10.487825, -47.911150)
Redshift:0.04794
Type:SN II
See object 2025qzz [ATLAS25hod]
,
2025lzu [ATLAS25fob]
RA, DEC:21:39:55.024, +06:00:12.08
(324.979266, 6.003357)
Redshift:0.063
Type:SN II
See object 2025lzu [ATLAS25fob]
This report includes classifications of 3 new Type II SNe and a reclassification of a supernova as Type II, which were done through observations taken in the course of the ESO Summer Research Program…
AstroNote 2025-218
Type: Object/s-Discovery/Classification
Released: 2025-07-18 10:08:57
SLSN and TDE candidates from NEEDLE on Lasair
X. Sheng, M. Nicholl, K. W. Smith, C. R. Angus, A. Aamer, M. Fulton, T. Moore, J. Weston, D. R. Young, D. Magill (QUB),…
Source Group: OxQUB
Keywords: Transient, Time-domain, TDE, Supernova
Related Objects:
2025pjf [ZTF25aawyyyn]
RA, DEC:21:37:45.021, -18:11:11.27
(324.437587, -18.186463)
Redshift:
Type:
See object 2025pjf [ZTF25aawyyyn]
,
2025ndr [ZTF25aatpeel]
RA, DEC:20:25:19.322, -02:29:59.80
(306.330508, -2.499945)
Redshift:
Type:
See object 2025ndr [ZTF25aatpeel]
,
2025nxb [ZTF25aawacxy]
RA, DEC:15:08:05.600, -00:21:42.19
(227.023334, -0.361719)
Redshift:
Type:
See object 2025nxb [ZTF25aawacxy]
,
2025qny [ZTF25aayygab]
RA, DEC:20:52:58.494, -19:38:48.17
(313.243725, -19.646713)
Redshift:
Type:
See object 2025qny [ZTF25aayygab]
Related Notes:
2025-191
2025-2182025-06-20 12:41:09
Title: SLSN and TDE candidates from NEEDLE on Lasair
Authors: X. Sheng, M. Nicholl, K. W. Smith, C. R. Angus, A. Aamer, M…
Source Group: OxQUB
,
2025-199
2025-2182025-07-01 07:08:02
Title: ZTF superluminous supernova candidates
Authors: Daniel Perley, Jacob Wise (LJMU), P. Pessi, R. Lunnan, Anam…
Source Group: ZTF
We report 2 SLSN and 2 TDE candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these even…
AstroNote 2025-217
Type: Announcement-Tool/Utility
Released: 2025-07-17 22:46:48
Discovery of 18 Transients/Variables (z_host = 0.30-2.66) in Abell 2744 using MAGNIF JWST/NIRCam Images
Christa DeCoursey (University of Arizona), Fengwu Sun (Harvard), Wenlei Chen (Oklahoma State University), Jose Diego (I…
Source Group: MAGNIF
Related Objects:
2023aedf
RA, DEC:00:14:10.960, -30:20:15.91
(3.545667, -30.337753)
Redshift:
Type:
See object 2023aedf
,
2023aede
RA, DEC:00:14:16.960, -30:20:58.77
(3.570667, -30.349658)
Redshift:
Type:
See object 2023aede
,
2023aedd
RA, DEC:00:14:04.340, -30:21:17.99
(3.518083, -30.354997)
Redshift:
Type:
See object 2023aedd
,
2023aedc
RA, DEC:00:14:17.570, -30:22:50.94
(3.573208, -30.380817)
Redshift:
Type:
See object 2023aedc
,
2023aedb
RA, DEC:00:14:10.550, -30:23:12.01
(3.543958, -30.386669)
Redshift:
Type:
See object 2023aedb
,
2023aeda
RA, DEC:00:14:05.070, -30:21:38.54
(3.521125, -30.360706)
Redshift:
Type:
See object 2023aeda
,
2023aecz
RA, DEC:00:14:27.020, -30:24:34.17
(3.612583, -30.409492)
Redshift:
Type:
See object 2023aecz
,
2023aecy
RA, DEC:00:14:18.770, -30:24:22.45
(3.578208, -30.406236)
Redshift:
Type:
See object 2023aecy
,
2023aecx
RA, DEC:00:14:21.920, -30:21:49.52
(3.591333, -30.363756)
Redshift:
Type:
See object 2023aecx
,
2023aecw
RA, DEC:00:14:22.110, -30:22:00.35
(3.592125, -30.366764)
Redshift:
Type:
See object 2023aecw
,
2023aecv
RA, DEC:00:14:28.210, -30:21:55.89
(3.617542, -30.365525)
Redshift:
Type:
See object 2023aecv
,
2023aecu
RA, DEC:00:14:21.010, -30:20:01.69
(3.587542, -30.333803)
Redshift:
Type:
See object 2023aecu
,
2023aect
RA, DEC:00:14:13.400, -30:19:57.46
(3.555833, -30.332628)
Redshift:
Type:
See object 2023aect
,
2023aecs
RA, DEC:00:14:22.770, -30:23:50.14
(3.594875, -30.397261)
Redshift:
Type:
See object 2023aecs
,
2023aecr
RA, DEC:00:14:07.880, -30:23:14.43
(3.532833, -30.387342)
Redshift:
Type:
See object 2023aecr
,
2023aecq
RA, DEC:00:14:13.600, -30:22:49.14
(3.556667, -30.380317)
Redshift:
Type:
See object 2023aecq
,
2023aecp
RA, DEC:00:14:12.570, -30:23:58.12
(3.552375, -30.399478)
Redshift:
Type:
See object 2023aecp
,
2023aeco
RA, DEC:00:14:12.660, -30:24:01.23
(3.552750, -30.400342)
Redshift:
Type:
See object 2023aeco
We report the discovery of 18 transient/variable sources in the Abell 2744 field associated with host galaxies at redshifts z = 0.30-2.66. We discovered these sources through an archival search by co…
AstroNote 2025-216
Type: Object/s-Data/Analysis
Released: 2025-07-16 22:17:36
SN 2025pht in NGC 1637: LCO position and identification of the progenitor star candidate in HST and JWST image
I. Pérez-Fournon (IAC and ULL), N. Elías-Rosa (INAF & ICE / CSIC), F. Poidevin, D. Aguado, A. López-Oramas, and D. …
Source Group: SGLF
Keywords: Supernova, Transient, Time-domain
Related Objects:
2025pht [ASASSN-25cw]
RA, DEC:04:41:28.834, -02:51:55.87
(70.370140, -2.865520)
Redshift:
Type:SN IIP
See object 2025pht [ASASSN-25cw]
SN 2025pht (ASASSN-25cw) was discovered by K. Z. Stanek and spectroscopically classified as a SN IIP by J. Strader. The host galaxy, NGC 1637, at a redshift of z = 0.002392 has extensive archival HS…
AstroNote 2025-215
Type: Object/s-Discovery/Classification
Released: 2025-07-16 16:07:58
ePESSTO+ spectroscopic classification of optical transients
J. Quirola-Vásquez, J. Sánchez-Sierras (Radboud), U. Burgaz, J.H. Terwel (Trinity), D. O'Neill (Birmingham), L. Ga…
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Related Objects:
2025qgd [ATLAS25gxg]
RA, DEC:10:27:51.066, -43:54:20.96
(156.962776, -43.905823)
Redshift:0.009354
Type:SN II
See object 2025qgd [ATLAS25gxg]
,
2025lwx [ATLAS25fiy]
RA, DEC:21:28:22.795, -23:53:58.89
(322.094978, -23.899693)
Redshift:0.06
Type:SN II
See object 2025lwx [ATLAS25fiy]
,
2025qaz [ZTF25aayxhar]
RA, DEC:20:50:27.269, -23:20:48.07
(312.613622, -23.346686)
Redshift:0.1
Type:SN Ia
See object 2025qaz [ZTF25aayxhar]
,
2025qpv [ZTF25abakvtg]
RA, DEC:21:30:58.771, +22:32:29.50
(322.744880, 22.541528)
Redshift:0.0456
Type:SN Ia
See object 2025qpv [ZTF25abakvtg]
,
2025qzm [GOTO25esx]
RA, DEC:00:45:32.097, -26:33:30.90
(11.383739, -26.558584)
Redshift:0.0227
Type:SN II
See object 2025qzm [GOTO25esx]
,
2025qoy [ATLAS25hbp]
RA, DEC:03:43:55.871, -20:31:46.73
(55.982797, -20.529647)
Redshift:0.0405
Type:SN Ia
See object 2025qoy [ATLAS25hbp]
,
2025qha [ATLAS25gzg]
RA, DEC:04:21:40.657, -53:21:39.13
(65.419405, -53.360869)
Redshift:0.0424
Type:SN Ia
See object 2025qha [ATLAS25gzg]
,
2025qhb [ATLAS25gzh]
RA, DEC:05:02:24.017, -47:58:41.57
(75.600069, -47.978213)
Redshift:0.06
Type:SN Ia-91T-like
See object 2025qhb [ATLAS25gzh]
,
2025qpo [GOTO25eqw]
RA, DEC:20:26:29.148, -57:19:14.21
(306.621450, -57.320614)
Redshift:0.0574
Type:SN Ia
See object 2025qpo [GOTO25eqw]
,
2025qqa [GOTO25ero]
RA, DEC:05:11:43.103, -42:26:38.86
(77.929597, -42.444128)
Redshift:0.052
Type:Galaxy
See object 2025qqa [GOTO25ero]
This report includes classifications of 5 Type Ia's, 1 Type Ia-91T, 3 Type II's, and 1 Galaxy spectrum.
AstroNote 2025-214
Type: Object/s-Discovery/Classification
Released: 2025-07-15 14:29:18
ePESSTO+ spectroscopic classification of optical transients
J. Sánchez-Sierras, J. Quirola-Vásquez (Radboud), T. Müller Bravo, K. Maguire (Trinity), D. O'Neill (Warwick), L. …
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Related Objects:
2025qtv [ATLAS25hfv]
RA, DEC:13:52:16.482, +22:31:28.16
(208.068676, 22.524487)
Redshift:0.028
Type:SN Ia-91T-like
See object 2025qtv [ATLAS25hfv]
,
2025qsn [GOTO25esf]
RA, DEC:16:00:38.325, +14:21:22.43
(240.159688, 14.356231)
Redshift:
Type:SN
See object 2025qsn [GOTO25esf]
This report includes classification of one Type Ia 91T-like supernova.
AstroNote 2025-213
Type: Object/s-Discovery/Classification
Released: 2025-07-14 16:36:07
GOTO discovery of a possible SN in NGC 7331 (13.6 Mpc)
D. O'Neill, T. Killestein, A. Kumar, G. Ramsay, M. Pursiainen, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeg…
Source Group: GOTO
Keywords: Supernova, Time-domain
Related Objects:
2025rbs [GOTO25evh]
RA, DEC:22:37:03.642, +34:25:07.96
(339.265175, 34.418877)
Redshift:0.002722
Type:SN Ia
See object 2025rbs [GOTO25evh]
We report on the discovery of a possible SN in the nearby galaxy NGC 7331 at 13.6 ± 2.6 Mpc with GOTO L-band magnitude of 17.07 ± 0.03 AB mag at 14-07-2025 03:22:35 UTC. Assuming the host distance, t…
AstroNote 2025-212
Type: Object/s-Discovery/Classification
Released: 2025-07-14 13:45:06
ZTF Classifications of ZTF25aaxdtdm (AT2025own) and ZTF25aaooewz (AT 2025iuh) as likely TDEs
R. Stein (JSI), K. Das (Caltech), R. Chornock (UC Berkeley), X. J. Hall (CMU), J. Carney (UNC), I. Andreoni (UNC), E. H…
Source Group: ZTF
Related Objects:
2025iuh
RA, DEC:11:40:41.756, +18:14:18.79
(175.173984, 18.238552)
Redshift:0.182
Type:TDE-H-He
See object 2025iuh
,
2025own
RA, DEC:00:02:14.647, +41:35:44.97
(0.561031, 41.595826)
Redshift:0.1535
Type:TDE
See object 2025own
We report the classifications of the optical transients ZTF25aaxdtdm/AT2025own and ZTF25aaooewz/AT2025iuh as tidal disruption events (TDEs). The sources were selected by the tdescore ML classifier (S…
AstroNote 2025-211
Type: Object/s-Discovery/Classification
Released: 2025-07-14 08:59:36
ATLAS25hnz (AT2025qzy): discovery of the first candidate SN from ATLAS-Teide in SDSS J120634.98+625915.6 (168 Mpc)
K. W. Smith, S. J. Smartt (Oxford/QUB), F. Stoppa (Oxford), M. R. Alarcón, J. Licandro, P. Nichita (IAC), D. R. Young, …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025qzy [ATLAS25hnz]
RA, DEC:12:06:36.467, +62:59:16.06
(181.651948, 62.987795)
Redshift:
Type:
See object 2025qzy [ATLAS25hnz]
Here we report the ATLAS discovery of the transient ATLAS25hnz (AT2025qzy) in galaxy SDSS J120634.98+625915.6 at magnitude m_w = 18.50 +/- 0.13. This is the first candidate supernova to be submitted …
AstroNote 2025-210
Type: Object/s-Discovery/Classification
Released: 2025-07-13 18:47:41
ePESSTO+ spectroscopic classification of optical transients
J. Quirola-Vásquez, J. Sánchez-Sierras (Radboud), K. Maguire, T. Müller Bravo (Trinity), D. O'Neill (Warwick), L…
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Related Objects:
2025nfb [ATLAS25gag]
RA, DEC:02:09:26.097, -71:26:44.91
(32.358738, -71.445808)
Redshift:0.059
Type:SN Ia-CSM
See object 2025nfb [ATLAS25gag]
,
2025ple [ATLAS25gra]
RA, DEC:02:06:46.071, -60:43:51.79
(31.691962, -60.731052)
Redshift:0.0228
Type:SN Ia
See object 2025ple [ATLAS25gra]
This report includes classifications of a Ia-CSM and a SN Ia.
AstroNote 2025-209
Type: Object/s-Data/Analysis
Released: 2025-07-11 22:14:06
Swift/UVOT observations of SN 2025qtt 6 minutes after its automatic discovery by BTSbot-nearby
Nabeel Rehemtulla (NU), Steve Schulze (NU), Wynn Jacobson-Galán (Caltech), Jesper Sollerman (OKC), Theophile du Laz (Ca…
Source Group: ZTF
Keywords: Optical, Ultra-Violet, Supernova
Related Objects:
2025qtt [ZTF25abawltx]
RA, DEC:19:31:06.006, +54:06:03.65
(292.775025, 54.101013)
Redshift:0.012839
Type:SN II
See object 2025qtt [ZTF25abawltx]
Related Notes:
2024-140
2025-2092024-05-31 13:09:33
Title: BTSbot-nearby: a new program for very rapid autonomous follow-up of young, nearby extragalactic transients found in ZTF data
Authors: Nabeel Rehemtulla (NU, CIERA), Theophile Jegou du Laz (Calt…
Source Group: ZTF
,
2025-46
2025-2092025-02-03 15:54:18
Title: Early spectroscopy of SNe 2025ay, 2025mg, 2025oq, and 2025aml autonomously triggered by BTSbot-nearby
Authors: Nabeel Rehemtulla (NU), Wynn Jacobson-Galán (Caltech), Theo…
Source Group: ZTF
,
2025-208
2025-2092025-07-08 23:00:43
Title: Automatic ground- and space-based follow-up of SN 2025qpk following its discovery by BTSbot-nearby
Authors: Nabeel Rehemtulla (NU), Wynn Jacobson-Galán (Caltech), Theo…
Source Group: ZTF
We report the rapid, automatic UV/optical follow-up of the young Type II SN 2025qtt at d=38.5 Mpc, including Swift/UVOT observations starting just 6 minutes after its discovery by BTSbot-nearby. Our …
AstroNote 2025-208
Type: Object/s-Data/Analysis
Released: 2025-07-08 23:00:43
Automatic ground- and space-based follow-up of SN 2025qpk following its discovery by BTSbot-nearby
Nabeel Rehemtulla (NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech), Steve Schulze (NU), Jesper Sollerman…
Source Group: ZTF
Keywords: Optical, Supernova, Ultra-Violet
Related Objects:
2025qpk [ZTF25abadtsx]
RA, DEC:20:44:37.565, -01:43:12.44
(311.156519, -1.720122)
Redshift:0.01377
Type:SN Ia
See object 2025qpk [ZTF25abadtsx]
Related Notes:
2023-265
2025-2082023-10-11 20:39:39
Title: SN 2023tyk: discovery to spectroscopic classification performed fully automatically
Authors: Nabeel Rehemtulla (NU), Adam Miller (NU), Christoffer Freml…
Source Group: ZTF
,
2024-140
2025-2082024-05-31 13:09:33
Title: BTSbot-nearby: a new program for very rapid autonomous follow-up of young, nearby extragalactic transients found in ZTF data
Authors: Nabeel Rehemtulla (NU, CIERA), Theophile Jegou du Laz (Calt…
Source Group: ZTF
,
2025-46
2025-2082025-02-03 15:54:18
Title: Early spectroscopy of SNe 2025ay, 2025mg, 2025oq, and 2025aml autonomously triggered by BTSbot-nearby
Authors: Nabeel Rehemtulla (NU), Wynn Jacobson-Galán (Caltech), Theo…
Source Group: ZTF
We report the BTSbot-nearby discovery and follow-up of SN 2025qpk, a young Type Ia SN at z=0.01377. BTSbot-nearby autonomously triggered Swift using the new urgency 0 mode, which enabled the Swift ob…
AstroNote 2025-207
Type: Object/s-Discovery/Classification
Released: 2025-07-07 19:55:40
Hostless candidates detected by ELEPHANT
R. Durgesh (independent), P. Pessi (OKC), E. E. O. Ishida (CNRS), E. E. Hayes (KIC), L. Nakazono (USP), R. A. P. Olivei…
Source Group: COIN
Keywords: Time-domain, Transient, Surveys
Related Objects:
2025pbt [ZTF25aawjdgm]
RA, DEC:14:50:39.782, -05:39:16.26
(222.665759, -5.654517)
Redshift:
Type:
See object 2025pbt [ZTF25aawjdgm]
,
2025ovm [ZTF25aawtdak]
RA, DEC:23:12:59.191, -00:15:09.71
(348.246631, -0.252698)
Redshift:
Type:
See object 2025ovm [ZTF25aawtdak]
We report 2 hostless candidates selected by the ELEPHANT pipeline.
AstroNote 2025-206
Type: Object/s-Discovery/Classification
Released: 2025-07-04 18:25:17
ATLAS25gxh (AT2025qge): discovery of a candidate SN in ESO 136- G 007 (79 Mpc)
K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, A. Aamer, C. …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025qge [ATLAS25gxh]
RA, DEC:15:54:15.078, -59:49:53.36
(238.562825, -59.831490)
Redshift:
Type:
See object 2025qge [ATLAS25gxh]
Here we report the ATLAS discovery of the transient ATLAS25gxh (AT2025qge) in galaxy ESO 136- G 007 at magnitude m_o = 18.88 +/- 0.18. At a distance of 79 Mpc, the transient was discovered on MJD = …
AstroNote 2025-205
Type: Object/s-Discovery/Classification
Released: 2025-07-04 18:24:44
ATLAS25gxg (AT2025qgd): discovery of a candidate SN in NGC 3256 (37 Mpc)
K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, A. Aamer, C. …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025qgd [ATLAS25gxg]
RA, DEC:10:27:51.066, -43:54:20.96
(156.962776, -43.905823)
Redshift:0.009354
Type:SN II
See object 2025qgd [ATLAS25gxg]
Here we report the ATLAS discovery of the transient ATLAS25gxg (AT2025qgd) in galaxy NGC 3256 at magnitude m_o = 17.09 +/- 0.06. At a distance of 37 Mpc (redshift independent, from NED), the transie…
AstroNote 2025-204
Type: Object/s-Discovery/Classification
Released: 2025-07-04 17:20:51
A first collection of extragalactic transient candidates identified in Vera C. Rubin Observatory DP1 data
Igor Andreoni, James Freeburn, Jonathan Carney, Akash Anumarlapudi, Sarah Teague (UNC at Chapel Hill)
Source Group: ATALab
Keywords: Transient, Surveys, Supernova
Related Objects:
2024aigg
RA, DEC:03:32:29.944, -27:44:23.33
(53.124768, -27.739815)
Redshift:0.07593
Type:
See object 2024aigg
,
2024ahyy
RA, DEC:03:31:34.221, -28:24:45.37
(52.892587, -28.412603)
Redshift:
Type:
See object 2024ahyy
,
2024aigl
RA, DEC:03:59:24.159, -48:46:50.53
(59.850663, -48.780701)
Redshift:
Type:
See object 2024aigl
,
2024aigk
RA, DEC:03:55:31.820, -48:27:43.71
(58.882583, -48.462142)
Redshift:
Type:
See object 2024aigk
,
2024ahzi
RA, DEC:03:53:20.413, -48:45:01.09
(58.335054, -48.750303)
Redshift:
Type:
See object 2024ahzi
,
2024ahzc
RA, DEC:03:31:21.181, -28:16:47.64
(52.838254, -28.279900)
Redshift:
Type:
See object 2024ahzc
,
2021bjp
RA, DEC:02:28:20.817, +06:36:55.34
(37.086737, 6.615373)
Redshift:
Type:
See object 2021bjp
,
2024ahwk
RA, DEC:03:29:50.944, -28:13:04.73
(52.462267, -28.217981)
Redshift:
Type:
See object 2024ahwk
,
2023yft
RA, DEC:07:05:31.800, -10:45:39.31
(106.382500, -10.760919)
Redshift:
Type:
See object 2023yft
,
2024aaux
RA, DEC:02:34:22.738, +07:12:52.31
(38.594742, 7.214531)
Redshift:
Type:
See object 2024aaux
,
2024ackk
RA, DEC:02:40:40.324, -34:17:49.33
(40.168017, -34.297036)
Redshift:
Type:
See object 2024ackk
We report the discovery of 3 extragalactic transient candidates found in Vera C. Rubin Observatory data released as part of the Rubin Data Preview 1. We also flag 8 sources coincident with transient …
AstroNote 2025-203
Type: Object/s-Discovery/Classification
Released: 2025-07-04 13:35:06
SLSN candidates from NEEDLE on Lasair
X. Sheng, M. Nicholl, K. W. Smith, C. R. Angus, A. Aamer, M. Fulton, T. Moore, J. Weston, D. R. Young, D. Magill (QUB),…
Source Group: OxQUB
Keywords: Transient, Time-domain, TDE, Supernova
Related Objects:
2025ngk [ZTF25aaurbsw]
RA, DEC:14:59:41.799, +50:54:35.29
(224.924163, 50.909802)
Redshift:
Type:
See object 2025ngk [ZTF25aaurbsw]
,
2025nyr [ZTF25aavgqzp]
RA, DEC:12:52:18.295, +15:22:37.40
(193.076229, 15.377055)
Redshift:
Type:
See object 2025nyr [ZTF25aavgqzp]
,
2025oiw
RA, DEC:17:25:14.953, +60:33:55.73
(261.312303, 60.565480)
Redshift:
Type:
See object 2025oiw
We report 3 SLSN candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these events.
AstroNote 2025-202
Type: Object/s-Discovery/Classification
Released: 2025-07-04 09:30:10
Identification of AT2021aeuj as a likely Extreme Nuclear Transients (ENT)
Etienne Russeil (Stockholm University), Erwan Quintin (ESA)
Keywords: TDE, AGN, Optical, Transient
Related Objects:
2021aeuj [ZTF19adcddzk]
RA, DEC:09:08:25.729, +42:53:41.29
(137.107204, 42.894802)
Redshift:
Type:
See object 2021aeuj [ZTF19adcddzk]
As part of the ongoing development of a SLSN identification pipeline for the Fink collaboration, we have identified AT 2021aeuj (ZTF19adcddzk) as being a candidate Extreme Nuclear Transients (ENT).
AstroNote 2025-201
Type: Object/s-Discovery/Classification
Released: 2025-07-03 12:04:31
Possible strong gravitational lensing of transient AT2025mkn
Ariel Goobar, Cameron Lemon, Joel Johansson (Oskar Klein Centre, SU), Daniel Perley (LJMU), Jean Somalwar, Vikram Ravi…
Source Group: ZTF
Keywords: Transient, Supernova, Lensing
Related Objects:
2025mkn [ZTF25aasjeza]
RA, DEC:16:42:11.463, +55:31:02.44
(250.547763, 55.517345)
Redshift:
Type:SN
See object 2025mkn [ZTF25aasjeza]
We report observations of the optical transient AT2025mkn, first detected by ZTF on 2025-05-25 and independently reported by ATLAS. The transient, offset by 0.83″ from a red galaxy at z = 0.42, exhib…
AstroNote 2025-200
Type: Announcement-Data Release
Released: 2025-07-02 11:31:41
Photometric follow-up of SN2025coe with RAPAS ProAm network
Thierry Midavaine (SAF, Salvia Observatory), Pascal André (ADAGIO), David Bregou (ADAGIO), Frederic Deanjean (AG33), Je…
Keywords: Instrumentation, Optical, Photometry, Supernova, Time-domain, Transient
Related Objects:
2025coe
RA, DEC:10:33:07.921, +28:26:12.54
(158.283004, 28.436816)
Redshift:0.00472
Type:SN Ib-Ca-rich
See object 2025coe
We report on the optical photometric follow-up of SN2025coe with RAPAS, a ProAm network using telescopes equipped with a set of filters meeting Gaia photometric bands.
AstroNote 2025-199
Type: Object/s-Discovery/Classification
Released: 2025-07-01 21:48:40
ZTF superluminous supernova candidates
Daniel Perley, Jacob Wise (LJMU), P. Pessi, R. Lunnan, Anamaria Gkini, Sean Brennan, Lin Yan (Caltech), Jesper Sollerma…
Source Group: ZTF
Keywords: Supernova, Transient
Related Objects:
2024aigf [ZTF24abwmjtt]
RA, DEC:22:37:00.649, +33:55:20.12
(339.252702, 33.922255)
Redshift:
Type:
See object 2024aigf [ZTF24abwmjtt]
,
2025lhp [ZTF25aaqqjud]
RA, DEC:00:22:53.620, +46:08:38.64
(5.723418, 46.144067)
Redshift:0.11
Type:SN
See object 2025lhp [ZTF25aaqqjud]
,
2025ppk
RA, DEC:16:20:42.920, -10:48:39.91
(245.178833, -10.811086)
Redshift:
Type:
See object 2025ppk
,
2025llc [ZTF25aarmjkf]
RA, DEC:19:20:17.693, +58:02:33.94
(290.073719, 58.042761)
Redshift:
Type:
See object 2025llc [ZTF25aarmjkf]
,
2025mpc [ZTF25aasnywm]
RA, DEC:21:20:02.924, +32:06:50.54
(320.012183, 32.114038)
Redshift:
Type:
See object 2025mpc [ZTF25aasnywm]
,
2025ndr [ZTF25aatpeel]
RA, DEC:20:25:19.322, -02:29:59.80
(306.330508, -2.499945)
Redshift:
Type:
See object 2025ndr [ZTF25aatpeel]
We report six ZTF superluminous supernova candidates selected by our software filter and subsequent human vetting.
AstroNote 2025-198
Type: Object/s-Discovery/Classification
Released: 2025-07-01 15:00:11
ATLAS25grb (AT2025plf): discovery of a candidate SN in UGC 12454 (61 Mpc)
H. Stevance (Oxford), K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025plf [ATLAS25grb]
RA, DEC:23:15:09.078, +09:40:21.65
(348.787824, 9.672680)
Redshift:0.016
Type:SN Ia
See object 2025plf [ATLAS25grb]
Here we report the ATLAS discovery of the transient ATLAS25grb (AT2025plf) in galaxy UGC 12454 at magnitude m_o = 18.77 +/- 0.14. At a distance of 61 Mpc, the transient was discovered on MJD = 60856…
AstroNote 2025-197
Type: Object/s-Discovery/Classification
Released: 2025-06-30 16:03:15
ATLAS25gpw (AT2025pjt): discovery of a candidate SN in LCRS B125653.7-115043 (92 Mpc)
K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, A. Aamer, C. …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025pjt [ATLAS25gpw]
RA, DEC:12:59:30.617, -12:06:51.31
(194.877570, -12.114252)
Redshift:0.021
Type:SN Ia
See object 2025pjt [ATLAS25gpw]
Here we report the ATLAS discovery of the transient ATLAS25gpw (AT2025pjt) in galaxy LCRS B125653.7-115043 at magnitude m_c = 18.70 +/- 0.10. At a distance of 92 Mpc, the transient was discovered on…
AstroNote 2025-196
Type: Object/s-Discovery/Classification
Released: 2025-06-28 00:10:44
2DTS report of AT2025kkb/ZTF25aaofttb as a SLSN-Ic at z=0.58
Xander J. Hall (CMU), Erica Hammerstein (UC Berkeley), Daniel A. Perley (LJMU), Steve Schulze (NU), Ragnhild Lunnan (OK…
Source Group: DESIRT
Keywords: Supernova
Related Objects:
2025kkb [ZTF25aaofttb]
RA, DEC:13:11:37.507, +10:19:59.24
(197.906279, 10.333123)
Redshift:0.58
Type:SLSN-I
See object 2025kkb [ZTF25aaofttb]
Related Notes:
2025-159
2025-1962025-05-26 22:01:51
Title: Hostless candidates detected by ELEPHANT
Authors: R. Durgesh (independent), P. Pessi (OKC), E. E. O. Ishida (…
Source Group: COIN
,
2025-179
2025-1962025-06-10 09:50:02
Title: ZTF superluminous supernova candidates
Authors: Ragnhild Lunnan (OKC), Daniel A. Perley, Jacob Wise (LJMU),…
Source Group: ZTF
,
2025-84
2025-1962025-03-10 17:49:14
Title: The DECam DESI Transient Survey (2DTS)
Authors: Xander J. Hall (CMU), Lei Hu (CMU), Antonella Palmese (CMU)…
Source Group: DESIRT
,
2022-191
2025-1962022-08-15 12:08:04
Title: The Next Generation SuperFit (NGSF) tool is now available for online execution on WISeREP
Authors: Samantha Goldwasser, Ofer Yaron, Avner Sass, Ido Irani, Avi…
Here we present a classification of AT2025kkb/ZTF25aaofttb as a superluminous supernova (SLSN), with an apparent peak magnitude of m_g = 19.4, a K-corrected peak absolute magnitude of M_g = -22.8, an…
AstroNote 2025-195
Type: Object/s-Data/Analysis
Released: 2025-06-25 17:21:39
Swift observations of AT2025ngt
S. Campana (INAF-Brera)
Keywords: Supernova
Related Objects:
2025ngt [ZTF25aaurzyo]
RA, DEC:19:09:04.262, +47:52:47.04
(287.267757, 47.879733)
Redshift:0.0972
Type:SN Ic-BL
See object 2025ngt [ZTF25aaurzyo]
Related Notes:
2025-190
2025-1952025-06-19 21:03:59
Title: ZTF Observations of the Fast, Blue, and Luminous Optical Transient AT2025ngt
Authors: Michael Camilo (Cornell), Kaustav Kashyap Das (Caltech), Ca…
Source Group: ZTF
,
2025-193
2025-1952025-06-22 09:41:59
Title: Keck/LRIS spectroscopy of AT2025ngt
Authors: Daniel A. Perley (LJMU), Anna Y. Q. Ho (Cornell), WeiKang Z…
Source Group: ZTF
We observed AT2025ngt with Swift, detecting the transient in all the UVOT filters but not in the X-rays.
AstroNote 2025-194
Type: Object/s-Discovery/Classification
Released: 2025-06-25 14:08:17
Visual detections of transients in the first public LSST image using TNS cross-matching
Yu-Hsing Lee, Ting-Wan Chen, Amar Aryan, Zhi-Yue Chen, Cheng-Han Lai, Meng-Han Lee, Aiswarya Sankar.K (all NCU, Taiwan)…
Source Group: Kinder
Keywords: Transient
Related Objects:
2024kce [ZTF24aaqaroi]
RA, DEC:12:29:49.560, +08:12:48.49
(187.456500, 8.213469)
Redshift:0.003
Type:SN Ia-pec
See object 2024kce [ZTF24aaqaroi]
,
2024adyk [ZTF24abxvcyp]
RA, DEC:12:24:03.930, +08:24:42.33
(186.016373, 8.411760)
Redshift:0.077103
Type:SN Ia
See object 2024adyk [ZTF24abxvcyp]
,
2025hlg [GOTO25bvg]
RA, DEC:12:30:22.343, +08:45:26.04
(187.593096, 8.757233)
Redshift:
Type:
See object 2025hlg [GOTO25bvg]
,
2025bcu [PS25pu]
RA, DEC:12:32:51.755, +07:51:02.32
(188.215644, 7.850643)
Redshift:
Type:
See object 2025bcu [PS25pu]
,
2025knv [GOTO25cra]
RA, DEC:12:29:08.265, +06:48:26.95
(187.284436, 6.807487)
Redshift:
Type:
See object 2025knv [GOTO25cra]
,
2025ckp [PS25wk]
RA, DEC:12:26:59.970, +06:37:13.95
(186.749875, 6.620543)
Redshift:
Type:
See object 2025ckp [PS25wk]
We report the results of a systematic search for transient sources in the first publicly released image from the Vera C. Rubin Observatory’s LSST, using cross-matching with the Transient Name Server …
AstroNote 2025-193
Type: Object/s-Discovery/Classification
Released: 2025-06-22 17:10:05
Keck/LRIS spectroscopy of AT2025ngt
Daniel A. Perley (LJMU), Anna Y. Q. Ho (Cornell), WeiKang Zheng (UC Berkeley), Alexei V. Filippenko (UC Berkeley), Thom…
Source Group: ZTF
Keywords: Transient, Supernova, Spectroscopy
Related Objects:
2025ngt [ZTF25aaurzyo]
RA, DEC:19:09:04.262, +47:52:47.04
(287.267757, 47.879733)
Redshift:0.0972
Type:SN Ic-BL
See object 2025ngt [ZTF25aaurzyo]
Related Notes:
2025-190
2025-1932025-06-19 21:03:59
Title: ZTF Observations of the Fast, Blue, and Luminous Optical Transient AT2025ngt
Authors: Michael Camilo (Cornell), Kaustav Kashyap Das (Caltech), Ca…
Source Group: ZTF
We present spectroscopy of the fast-rising optical transient AT2025ngt, showing it to be a peculiar Type Ic-BL supernova.
AstroNote 2025-192
Type: Announcement-Tool/Utility
Released: 2025-06-21 16:38:17
ATLAS25gfb (AT2025ois): discovery of a candidate SN/NT in UGC 00339 NED01 (52 Mpc)
A. J. Cooper (Oxford), K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025ois [ATLAS25gfb]
RA, DEC:00:34:22.189, +10:12:18.04
(8.592455, 10.205010)
Redshift:0.04
Type:SN Ia
See object 2025ois [ATLAS25gfb]
Here we report the ATLAS discovery of the transient ATLAS25gfb (AT2025ois) in galaxy UGC 00339 NED01 at magnitude m_o = 18.56 +/- 0.30. At a distance of 52 Mpc, the transient was discovered on MJD =…
AstroNote 2025-191
Type: Object/s-Discovery/Classification
Released: 2025-06-20 12:42:02
SLSN and TDE candidates from NEEDLE on Lasair
X. Sheng, M. Nicholl, K. W. Smith, C. R. Angus, A. Aamer, M. Fulton, T. Moore, J. Weston, D. R. Young, D. Magill (QUB),…
Source Group: OxQUB
Keywords: Transient, Time-domain, TDE, Supernova
Related Objects:
2025lsl [ZTF25aaoxgmt]
RA, DEC:16:29:25.326, +37:50:03.05
(247.355527, 37.834180)
Redshift:
Type:
See object 2025lsl [ZTF25aaoxgmt]
,
2025ndr [ZTF25aatpeel]
RA, DEC:20:25:19.322, -02:29:59.80
(306.330508, -2.499945)
Redshift:
Type:
See object 2025ndr [ZTF25aatpeel]
,
2025nxr [ZTF25aavgrko]
RA, DEC:12:57:40.081, +55:14:05.41
(194.417004, 55.234835)
Redshift:
Type:
See object 2025nxr [ZTF25aavgrko]
,
2025npl [ZTF25aauxyrt]
RA, DEC:13:10:55.265, +19:20:07.85
(197.730270, 19.335515)
Redshift:
Type:
See object 2025npl [ZTF25aauxyrt]
We report 3 SLSN and 1 TDE candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these even…
AstroNote 2025-190
Type: Object/s-Data/Analysis
Released: 2025-06-19 21:03:59
ZTF Observations of the Fast, Blue, and Luminous Optical Transient AT2025ngt
Michael Camilo (Cornell), Kaustav Kashyap Das (Caltech), Cassie Sevilla (Cornell), Anna Y. Q. Ho (Cornell)
Source Group: ZTF
Keywords: Transient, Optical, Spectroscopy
Related Objects:
2025ngt [ZTF25aaurzyo]
RA, DEC:19:09:04.262, +47:52:47.04
(287.267757, 47.879733)
Redshift:0.0972
Type:SN Ic-BL
See object 2025ngt [ZTF25aaurzyo]
We report ZTF observations of a fast, luminous, and blue transient, AT2025ngt (ZTF25aaurzyo). The spectroscopic redshift of the host galaxy is z = 0.097, implying a peak absolute extinction-corrected…
AstroNote 2025-189
Type: Object/s-Data/Analysis
Released: 2025-06-19 09:47:11
AMI-LA observations of AT2024aehp
Nadav Shoval (HUJI) , Assaf Horesh (HUJI), Andrew Hughes(Oxford), Joe Bright (Oxford), Yirmi Bernstein (HUJI), Adam Lan…
We report the detection of the AT2018cow-like source AT2024aehp with the radio telescope AMI-LA at 15.5 GHz.
AstroNote 2025-188
Type: Object/s-Discovery/Classification
Released: 2025-06-18 21:48:04
ATLAS25gey (AT2025nwy): discovery of a candidate SN in 2MASX J21173698-2247338 (105 Mpc)
E. Boyd (Glenlola Collegiate), C. Kukuckova, N. Keenan (Belfast High School), K. W. Smith (Oxford/QUB), D. R. Young, M…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025nwy [ATLAS25gey]
RA, DEC:21:17:39.158, -22:47:26.78
(319.413160, -22.790773)
Redshift:0.025981
Type:SN Ia
See object 2025nwy [ATLAS25gey]
Here we report the ATLAS discovery of the transient ATLAS25gey (AT2025nwy) in galaxy 2MASX J21173698-2247338 at magnitude m_o = 16.94 +/- 0.06. At a distance of 105 Mpc, the transient was discovered…
AstroNote 2025-187
Type: Object/s-Discovery/Classification
Released: 2025-06-18 17:37:53
ATLAS25gfe (AT2025nzi): discovery of a candidate SN in NGC 4615 (65 Mpc)
N. Keenan, C. Kukuckova (Belfast High School), E. Boyd (Glenlola Collegiate), T. Moore (QUB), K. W. Smith (Oxford/QUB)…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025nzi [ATLAS25gfe]
RA, DEC:12:41:36.862, +26:04:19.86
(190.403593, 26.072184)
Redshift:0.015797
Type:SN Ib
See object 2025nzi [ATLAS25gfe]
Here we report the ATLAS discovery of the transient ATLAS25gfe (AT2025nzi) in galaxy NGC 4615 at magnitude m_c = 19.02 +/- 0.15. At a distance of 65 Mpc, the transient was discovered on MJD = 60844…
AstroNote 2025-186
Type: Object/s-Discovery/Classification
Released: 2025-06-17 19:06:18
ePESSTO+ spectroscopic classification of optical transients
P. J. Pessi (SU), E. Concepcion (UNG), M. Gromadzki (Warsaw), N. Ihanec (ING, Warsaw), G. Pignata (UTA), M. Dennefeld (…
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Related Objects:
2025jyz [ATLAS25euu]
RA, DEC:00:33:26.729, -67:45:03.80
(8.361369, -67.751056)
Redshift:0.026
Type:SN II
See object 2025jyz [ATLAS25euu]
,
2025mlo [ATLAS25fsq]
RA, DEC:23:19:55.198, -71:32:14.62
(349.979990, -71.537394)
Redshift:0.06
Type:SN II
See object 2025mlo [ATLAS25fsq]
,
2025mqf [ATLAS25fun]
RA, DEC:22:31:27.238, -45:08:45.62
(337.863493, -45.146007)
Redshift:0.115
Type:SN IIn
See object 2025mqf [ATLAS25fun]
,
2025msq [ATLAS25fvq]
RA, DEC:01:26:30.611, -39:39:44.03
(21.627545, -39.662230)
Redshift:0.099
Type:SN
See object 2025msq [ATLAS25fvq]
,
2025mzi [ATLAS25fyd]
RA, DEC:09:08:44.516, -38:36:05.87
(137.185484, -38.601631)
Redshift:0.014
Type:SN II
See object 2025mzi [ATLAS25fyd]
,
2025mzk [ATLAS25fye]
RA, DEC:16:59:30.416, -33:49:59.64
(254.876733, -33.833233)
Redshift:0.05
Type:SN Ia
See object 2025mzk [ATLAS25fye]
,
2025nbm [ATLAS25fyz]
RA, DEC:01:56:34.339, -43:18:16.16
(29.143078, -43.304490)
Redshift:0.09
Type:SN Ia
See object 2025nbm [ATLAS25fyz]
,
2025nki [ATLAS25gca]
RA, DEC:13:09:56.690, -33:34:47.72
(197.486210, -33.579923)
Redshift:0.08
Type:SN Ia
See object 2025nki [ATLAS25gca]
,
2025nlf [GOTO25dlm]
RA, DEC:22:51:08.623, -76:22:38.67
(342.785930, -76.377409)
Redshift:0.063
Type:SN Ia
See object 2025nlf [GOTO25dlm]
,
2025nlv [GOTO25dlq]
RA, DEC:01:47:09.560, -81:11:40.94
(26.789832, -81.194705)
Redshift:0.09
Type:SN Ia-pec
See object 2025nlv [GOTO25dlq]
,
2025nlx [ATLAS25gcf]
RA, DEC:11:13:45.902, -34:03:10.31
(168.441258, -34.052864)
Redshift:0.022
Type:SN II
See object 2025nlx [ATLAS25gcf]
,
2025nmx [GOTO25dmu]
RA, DEC:13:34:35.591, -35:20:51.44
(203.648294, -35.347622)
Redshift:0.046
Type:SN Ic
See object 2025nmx [GOTO25dmu]
,
2025nmy [GOTO25dmv]
RA, DEC:12:59:19.544, -32:32:44.41
(194.831432, -32.545670)
Redshift:0.095
Type:SN Ia
See object 2025nmy [GOTO25dmv]
,
2025nna [GOTO25dmw]
RA, DEC:13:07:42.090, -33:33:21.92
(196.925376, -33.556088)
Redshift:0.047
Type:SN
See object 2025nna [GOTO25dmw]
,
2025nnc [GOTO25dnd]
RA, DEC:14:11:49.262, -32:05:32.02
(212.955257, -32.092229)
Redshift:0.133
Type:SN Ia
See object 2025nnc [GOTO25dnd]
,
2025nok [ATLAS25gds]
RA, DEC:13:24:57.732, -43:01:42.68
(201.240550, -43.028522)
Redshift:0.002
Type:Nova
See object 2025nok [ATLAS25gds]
,
2025neg [MASTER OT J123453.52-483804.6]
RA, DEC:12:34:53.520, -48:38:04.60
(188.723000, -48.634611)
Redshift:0
Type:CV
See object 2025neg [MASTER OT J123453.52-483804.6]
,
2025nab [GOTO25djs]
RA, DEC:20:33:44.469, -49:13:54.29
(308.435286, -49.231748)
Redshift:
Type:
See object 2025nab [GOTO25djs]
This report includes classifications of 7 Type Ia's, 5 Type II's., 1 Type Ic, 2 featurless SN, a CV and a Nova. We encourage followup observations.
AstroNote 2025-185
Type: Object/s-Discovery/Classification
Released: 2025-06-15 23:18:59
ATLAS25gdu (AT2025noo): discovery of a candidate SN in CGCG 241-092 (85 Mpc)
H. Stevance (Oxford), K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025noo [ATLAS25gdu]
RA, DEC:11:10:56.003, +46:56:36.05
(167.733347, 46.943348)
Redshift:0.019645
Type:SN II
See object 2025noo [ATLAS25gdu]
Here we report the ATLAS discovery of the transient ATLAS25gdu (AT2025noo) in galaxy CGCG 241-092 at magnitude m_o = 19.01 +/- 0.19. At a distance of 85 Mpc, the transient was discovered on MJD = 60…
AstroNote 2025-184
Type: Object/s-Discovery/Classification
Released: 2025-06-15 06:57:53
ATLAS25gde (AT2025nno): discovery of a candidate SN in UGC 12720 (71 Mpc)
H. Stevance (Oxford/QUB), T. Moore (QUB), K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, J…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025nno [ATLAS25gde]
RA, DEC:23:39:10.622, +05:29:18.14
(354.794258, 5.488372)
Redshift:0.01881
Type:SN II
See object 2025nno [ATLAS25gde]
Here we report the ATLAS discovery of the transient ATLAS25gde (AT2025nno) in galaxy UGC 12720 at magnitude m_o = 18.44 +/- 0.15. At a distance of 71 Mpc, the transient was discovered on MJD = 60840…
AstroNote 2025-183
Type: Object/s-Discovery/Classification
Released: 2025-06-13 12:09:24
ATLAS25gbx (AT2025nkf): discovery of a candidate SN in NGC 3040 NED01 (101 Mpc)
K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, A. Aamer, C. …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025nkf [ATLAS25gbx]
RA, DEC:09:53:03.796, +19:26:26.71
(148.265816, 19.440754)
Redshift:0.0254
Type:SN IIb
See object 2025nkf [ATLAS25gbx]
Here we report the ATLAS discovery of the transient ATLAS25gbx (AT2025nkf) in galaxy NGC 3040 NED01 at magnitude m_o = 18.5 +/- 0.15. At a distance of 101 Mpc, the transient was discovered on MJD = …
AstroNote 2025-182
Type: Object/s-Discovery/Classification
Released: 2025-06-13 09:39:20
SLSN and TDE candidates from NEEDLE on Lasair
C. R. Angus, A. Aamer, X. Sheng, M. Nicholl, K. W. Smith, M. Fulton, T. Moore, J. Weston, D. R. Young, D. Magill (QUB),…
Source Group: OxQUB
Keywords: Transient, Time-domain, TDE, Supernova
Related Objects:
2025nan [ZTF25aatnxnh]
RA, DEC:18:14:40.656, +40:41:54.38
(273.669401, 40.698438)
Redshift:
Type:
See object 2025nan [ZTF25aatnxnh]
,
2025mpc [ZTF25aasnywm]
RA, DEC:21:20:02.924, +32:06:50.54
(320.012183, 32.114038)
Redshift:
Type:
See object 2025mpc [ZTF25aasnywm]
,
2025mbs [ZTF25aarxyue]
RA, DEC:15:29:26.959, -03:29:29.63
(232.362330, -3.491565)
Redshift:
Type:
See object 2025mbs [ZTF25aarxyue]
,
2025llc [ZTF25aarmjkf]
RA, DEC:19:20:17.693, +58:02:33.94
(290.073719, 58.042761)
Redshift:
Type:
See object 2025llc [ZTF25aarmjkf]
,
2025nff [ZTF25aauhbwo]
RA, DEC:21:04:58.938, -03:32:29.65
(316.245576, -3.541571)
Redshift:0.083
Type:SN Ia
See object 2025nff [ZTF25aauhbwo]
Related Notes:
2025-175
2025-1822025-06-06 11:56:20
Title: SLSN candidates from NEEDLE on Lasair
Authors: X. Sheng, A. Aamer, M. Nicholl, K. W. Smith, C. R. Angus, …
Source Group: OxQUB
We report 4 SLSN and 1 TDE candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these even…
AstroNote 2025-181
Type: Object/s-Data/Analysis
Released: 2025-06-13 07:36:10
AT 2025ngs (ATLAS25gbi, ZTF25aauvber): a bright supernova candidate in NGC 5961
I. Pérez-Fournon (IAC and ULL), N.C. Sun (UCAS), F. Poidevin, D. Aguado, A. López-Oramas, D. Nespral (IAC and ULL), A…
Source Group: SGLF
Keywords: Supernova, Optical, Transient
Related Objects:
2025ngs
RA, DEC:15:35:16.678, +30:51:55.67
(233.819491, 30.865463)
Redshift:0.0063
Type:SN II
See object 2025ngs
Here we report on the bright and likely fast rising supernova candidate AT 2025ngs (ATLAS25gbi, ZTF25aauvber) in NGC 5961 (at a mean metric distance of 32.7 Mpc), detected by ATLAS and ZTF.
AstroNote 2025-180
Type: Object/s-Discovery/Classification
Released: 2025-06-12 16:02:52
ATLAS25gbg (AT2025ngi): discovery of a candidate SN in ESO 187- G 058 (47 Mpc)
S. Srivastav, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng,…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025ngi [ATLAS25gbg]
RA, DEC:21:12:11.004, -57:16:17.67
(318.045848, -57.271576)
Redshift:0.01116
Type:SN II
See object 2025ngi [ATLAS25gbg]
Here we report the ATLAS discovery of the transient ATLAS25gbg (AT2025ngi) in galaxy ESO 187- G 058 at magnitude m_o = 17.62 +/- 0.10. At a distance of 47 Mpc, the transient was discovered on MJD = 6…
AstroNote 2025-179
Type: Object/s-Discovery/Classification
Released: 2025-06-11 14:40:02
ZTF superluminous supernova candidates
Ragnhild Lunnan (OKC), Daniel A. Perley, Jacob Wise (LJMU), Priscila Pessi, Anamaria Gkini, Sean Brennan, Jesper Soller…
Source Group: ZTF
Keywords: Supernova, Transient
Related Objects:
2025lsl [ZTF25aaoxgmt]
RA, DEC:16:29:25.326, +37:50:03.05
(247.355527, 37.834180)
Redshift:
Type:
See object 2025lsl [ZTF25aaoxgmt]
,
2025izy [ZTF25aanxtou]
RA, DEC:19:49:06.908, +78:51:20.32
(297.278784, 78.855645)
Redshift:0.1734
Type:SLSN-I
See object 2025izy [ZTF25aanxtou]
,
2025evp [ZTF25aaispqu]
RA, DEC:06:05:45.985, +48:29:48.79
(91.441604, 48.496885)
Redshift:
Type:
See object 2025evp [ZTF25aaispqu]
,
2025kkb [ZTF25aaofttb]
RA, DEC:13:11:37.507, +10:19:59.24
(197.906279, 10.333123)
Redshift:0.58
Type:SLSN-I
See object 2025kkb [ZTF25aaofttb]
,
2025inr [ZTF25aaomnws]
RA, DEC:15:23:10.920, +76:01:00.84
(230.795500, 76.016901)
Redshift:0.176
Type:SN
See object 2025inr [ZTF25aaomnws]
,
2025gyv [ZTF25aalsbpm]
RA, DEC:10:38:24.082, +68:02:25.02
(159.600343, 68.040284)
Redshift:
Type:
See object 2025gyv [ZTF25aalsbpm]
We report 6 ZTF superluminous supernova candidates selected by our software filter and subsequent human vetting. In this sample, a typical rise time is longer than 30 days and a typical peak r-band m…
AstroNote 2025-178
Type: Object/s-Discovery/Classification
Released: 2025-06-08 10:37:58
ATLAS25fyr (AT2025nat): discovery of a candidate SN in NGC 4475 (105 Mpc)
K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, A. Aamer, C. …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025nat [ATLAS25fyr]
RA, DEC:12:29:48.488, +27:14:10.24
(187.452032, 27.236177)
Redshift:0.02466
Type:SN II
See object 2025nat [ATLAS25fyr]
Here we report the ATLAS discovery of the transient ATLAS25fyr (AT2025nat) in galaxy NGC 4475 at magnitude m_o = 18.36 +/- 0.12. At a distance of 105 Mpc (redshift independent, from NED), the transie…
AstroNote 2025-177
Type: Object/s-Discovery/Classification
Released: 2025-06-08 01:52:46
Classification of supernovae with LDSS-3
Emilio Hueichapan (UDP), Regis Cartier (UA), José Prieto (UDP)
Related Objects:
2025mya [GOTO25dim]
RA, DEC:14:16:52.275, -36:29:31.97
(214.217813, -36.492213)
Redshift:0.027
Type:SN Ia
See object 2025mya [GOTO25dim]
,
2025mlb [ATLAS25fui]
RA, DEC:14:14:31.683, -10:42:12.88
(213.632011, -10.703578)
Redshift:0.041
Type:SN II
See object 2025mlb [ATLAS25fui]
,
2025mxg [GOTO25dhb]
RA, DEC:18:57:05.307, -62:18:38.85
(284.272114, -62.310792)
Redshift:0.013
Type:SN II
See object 2025mxg [GOTO25dhb]
This report includes the classification of 2 Type Ia and 1 Type II Supernovae.
AstroNote 2025-176
Type: Object/s-Discovery/Classification
Released: 2025-06-06 21:48:01
NOT spectroscopic classifications of optical transients
Gerard García Moreno, Mathias Gort, Nadejda Blagorodnova (ICCUB), John A. Paice (Durham), Marco A. Gómez-Muñoz, Hugo T…
Source Group: BlackGEM
Keywords: Cataclysmic Variable, Microlensing, Supernova
Related Objects:
2020nkz [Gaia20cxx]
RA, DEC:16:04:10.560, +14:56:18.35
(241.044000, 14.938431)
Redshift:0
Type:CV
See object 2020nkz [Gaia20cxx]
,
2025iww [ZTF25aaoqyej]
RA, DEC:14:56:15.284, -05:54:37.35
(224.063685, -5.910376)
Redshift:0.1
Type:SN Ia
See object 2025iww [ZTF25aaoqyej]
,
2025kha [ZTF25aaptvbh]
RA, DEC:14:54:53.363, +05:30:04.21
(223.722345, 5.501170)
Redshift:0.06
Type:SN II
See object 2025kha [ZTF25aaptvbh]
,
2025koz [ZTF25aaqocue]
RA, DEC:16:09:17.649, +09:40:46.49
(242.323537, 9.679582)
Redshift:0.1
Type:SN Ic-BL
See object 2025koz [ZTF25aaqocue]
,
2025lji [KATS25K010]
RA, DEC:22:50:29.060, +65:19:23.30
(342.621083, 65.323139)
Redshift:
Type:
See object 2025lji [KATS25K010]
,
2025ljk [KATS25K012]
RA, DEC:18:24:05.340, -22:33:35.20
(276.022250, -22.559778)
Redshift:0
Type:
See object 2025ljk [KATS25K012]
,
2025ljt [ZTF25aardghz]
RA, DEC:16:53:20.693, -08:25:32.30
(253.336220, -8.425638)
Redshift:0
Type:CV
See object 2025ljt [ZTF25aardghz]
,
2025lsf [GOTO25dad]
RA, DEC:14:27:59.667, +05:38:49.76
(216.998612, 5.647155)
Redshift:0.05
Type:SN II
See object 2025lsf [GOTO25dad]
,
2025lyx [ZTF25aarzkbz]
RA, DEC:20:59:34.251, -17:44:31.49
(314.892711, -17.742080)
Redshift:
Type:
See object 2025lyx [ZTF25aarzkbz]
We report the spectroscopic classification with NOT/ALFOSC of 9 optical transients. 3 CVs, 1 SN Ia, 1 SN Ic-BL, 2 SN II, 1 featureless continuum, and 1 Microlensing event.
AstroNote 2025-175
Type: Object/s-Discovery/Classification
Released: 2025-06-06 11:58:41
SLSN candidates from NEEDLE on Lasair
X. Sheng, A. Aamer, M. Nicholl, K. W. Smith, C. R. Angus, M. Fulton, T. Moore, J. Weston, D. R. Young, D. Magill (QUB)…
Source Group: OxQUB
Keywords: Transient, Time-domain, TDE, Supernova
Related Objects:
2025llc [ZTF25aarmjkf]
RA, DEC:19:20:17.693, +58:02:33.94
(290.073719, 58.042761)
Redshift:
Type:
See object 2025llc [ZTF25aarmjkf]
,
2025muz [ZTF25aaspqos]
RA, DEC:13:17:36.251, -12:06:01.19
(199.401046, -12.100329)
Redshift:
Type:
See object 2025muz [ZTF25aaspqos]
,
2025inr [ZTF25aaomnws]
RA, DEC:15:23:10.920, +76:01:00.84
(230.795500, 76.016901)
Redshift:0.176
Type:SN
See object 2025inr [ZTF25aaomnws]
We report 3 SLSN candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these events.
AstroNote 2025-174
Type: Object/s-Discovery/Classification
Released: 2025-06-05 14:56:38
ATLAS25fxl (AT2025myc): discovery of a candidate SN in 2MFGC 01200 (83 Mpc)
C. R. Angus (QUB), K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. S…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2025myc [ATLAS25fxl]
RA, DEC:01:34:34.470, -03:20:50.42
(23.643627, -3.347340)
Redshift:0.0188
Type:SN Ib/c
See object 2025myc [ATLAS25fxl]
Here we report the ATLAS discovery of the transient ATLAS25fxl (AT2025myc) in galaxy 2MFGC 01200 at magnitude m_c = 18.7 +/- 0.15. At a distance of 83 Mpc, the transient was discovered on MJD = 6…
AstroNote 2025-173
Type: Object/s-Discovery/Classification
Released: 2025-06-04 17:30:44
Kinder follow-up observations of SN 2025mvn (ATLAS25fwv) with Altay telescopes
S. Yang, Z. N. Wang, L. L. Fan (all HNAS), Z.P. Zhu, X. Liu, S.Q. Jiang, J. An, D. Xu (all NAOC), S.Y. Fu (HUST), A. Ar…
Source Group: Kinder
Keywords: Transient
Related Objects:
2025mvn [ATLAS25fwv]
RA, DEC:13:13:27.855, +36:35:11.65
(198.366064, 36.586570)
Redshift:0.002912
Type:SN II
See object 2025mvn [ATLAS25fwv]
Related Notes:
2021-92
2025-1732021-03-20 16:22:47
Title: Kinder follow-up observations of AT 2021gca (ZTF21aapkbav)
Authors: T.-W. Chen, S. Yang (Stockholm), Y.-C. Pan, C.-C. Ngeow, H…
Source Group: Kinder
,
2025-171
2025-1732025-06-03 10:57:00
Title: ATLAS25fwv (AT2025mvn): discovery of a candidate SN in NGC 5033 (18 Mpc)
Authors: K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulto…
Source Group: ATLAS
We observed SN 2025mvn (ATLAS25fwv) using the 1-meter telescopes in Altay, Xinjiang. Our observations confirm a rapid rise of 0.7 magnitudes in the r-band within 9 hours following the discovery, cons…
AstroNote 2025-172
Type: Announcement-Data Release
Released: 2025-06-03 15:49:02
Updated NED-LVS Galaxy Sample (version June 2025)
David Cook (Caltech/IPAC), Joseph Mazzarella (Caltech/IPAC), George Helou (Caltech/IPAC), Alexis Alcala (Caltech/IPAC),…
Keywords: Astronomical Databases, Catalogs, Gravitational Waves
Related Notes:
2025-55
2025-1722025-02-11 20:25:11
Title: Updated NED-LVS Galaxy Sample (version Jan 2025)
Authors: David Cook (Caltech/IPAC), Joseph Mazzarella (Caltech/IPAC)…
We announce an update to the NASA/IPAC Extragalactic Database Local Volume sample (NED-LVS). The June 2025 version includes new objects ingested by NED and the removal of newly identified non-galaxy …

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