Showing results 1 to 50 out of 2,369
AstroNote 2026-246
Type: Object/s-Discovery/Classification
Released: 2026-08-12 15:33:07
Kinder follow-up observations of AT 2026yos (ATLAS26jvy)
Y.-H. Lee, A. Aryan, T.-W. Chen, C.-S. Lin (all NCU), S. J. Smartt, J. Gillanders (both Oxford), S. J. Brennan (MPE), A…
Source Group: Kinder
Keywords: Transient
Related Objects:
2026yos [ATLAS26jvy]
RA, DEC:17:30:32.138, +16:18:42.09
(262.633908, 16.311692)
Redshift:
Type:
See object 2026yos [ATLAS26jvy]
Related Notes:
2026-245
2026-2462026-08-12 13:41:34
Title: ATLAS26jvy (AT2026yos): discovery of a fast-fading transient 37 kpc offset from NGC6379 (87 Mpc)
Authors: J. H. Gillanders (Oxford), S. J. Smartt, K. W. Smith (Oxfor…
Source Group: ATLAS
We report multiband photometric follow-up observations of AT 2026yos (ATLAS26jvy), a rapidly fading transient discovered by ATLAS (Gillanders et al., AstroNote 2026-245). We observed the transient wi…
AstroNote 2026-245
Type: Object/s-Discovery/Classification
Released: 2026-08-12 14:15:37
ATLAS26jvy (AT2026yos): discovery of a fast-fading transient 37 kpc offset from NGC6379 (87 Mpc)
J. H. Gillanders (Oxford), S. J. Smartt, K. W. Smith (Oxford/QUB), S. Srivastav (Oxford), D. R. Young, M. Nicholl, T. …
Source Group: ATLAS
Related Objects:
2026yos [ATLAS26jvy]
RA, DEC:17:30:32.138, +16:18:42.09
(262.633908, 16.311692)
Redshift:
Type:
See object 2026yos [ATLAS26jvy]
Here we report the ATLAS discovery of the transient ATLAS26jvy (AT2026yos) in galaxy NGC6379 at AB magnitude, m_w = 18.53 +/- 0.04. At a distance of 87 Mpc, the transient was discovered on MJD 61262…
AstroNote 2026-244
Type: Object/s-Data/Analysis
Released: 2026-08-11 02:10:41
DAO photometric follow-up of selected transients - 2026 August
D. D. Balam (Dominion Astrophysical Observatory, National Research Council of Canada), S. Chan (University of British C…
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2026xcx
RA, DEC:21:43:46.444, +20:19:57.48
(325.943519, 20.332634)
Redshift:
Type:
See object 2026xcx
,
2026xpx
RA, DEC:16:42:36.347, +57:19:39.63
(250.651445, 57.327675)
Redshift:
Type:
See object 2026xpx
,
2026xqb
RA, DEC:23:42:32.703, +24:48:57.93
(355.636261, 24.816092)
Redshift:
Type:
See object 2026xqb
,
2026xqg
RA, DEC:23:46:18.275, +27:53:16.74
(356.576147, 27.887982)
Redshift:
Type:
See object 2026xqg
,
2026yah
RA, DEC:18:39:35.899, +47:49:07.33
(279.899578, 47.818702)
Redshift:
Type:
See object 2026yah
,
2026yai
RA, DEC:19:21:21.404, +50:37:12.50
(290.339183, 50.620140)
Redshift:
Type:
See object 2026yai
,
2026yft
RA, DEC:17:57:17.885, +25:16:17.44
(269.324520, 25.271510)
Redshift:
Type:
See object 2026yft
,
2026ygs
RA, DEC:23:07:14.067, +11:40:40.01
(346.808612, 11.677779)
Redshift:
Type:
See object 2026ygs
,
2026yjk
RA, DEC:21:10:17.563, +09:03:00.92
(317.573181, 9.050256)
Redshift:
Type:
See object 2026yjk
,
2026yjz
RA, DEC:20:06:27.207, +18:35:00.76
(301.613363, 18.583544)
Redshift:
Type:
See object 2026yjz
We present (SDSS) g&r filter photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophysical Observatory) National Resear…
AstroNote 2026-243
Type: Object/s-Discovery/Classification
Released: 2026-08-10 06:40:49
Spectroscopic Observations of Shock-Powered Type II Supernovae Detected by Rubin/LSST
Wynn Jacobson-Galan, K-Ryan Hinds, Sam Rose, Kaustav K. Das, Mansi Kasliwal, Theophile Jegou du Laz, Thomas Culino, Chr…
Source Group: ZTF
Related Objects:
2025vgt [ZTF25ablihfx]
RA, DEC:20:41:14.563, -25:21:12.72
(310.310678, -25.353533)
Redshift:0.019547
Type:SN II
See object 2025vgt [ZTF25ablihfx]
,
2023swf [ZTF23aberpzw]
RA, DEC:21:05:58.530, -14:50:30.34
(316.493875, -14.841761)
Redshift:0.024
Type:SN II
See object 2023swf [ZTF23aberpzw]
,
2020jfv [ZTF20abgbuly]
RA, DEC:23:06:35.750, +00:36:43.60
(346.648958, 0.612111)
Redshift:0.01709
Type:SN IIb
See object 2020jfv [ZTF20abgbuly]
,
2020izc [ZTF20ablqacl]
RA, DEC:00:05:02.510, -07:06:03.02
(1.260458, -7.100839)
Redshift:0.012699
Type:SN II
See object 2020izc [ZTF20ablqacl]
,
2017hcc [ATLAS17lsn]
RA, DEC:00:03:50.590, -11:28:28.60
(0.960792, -11.474611)
Redshift:0.0173
Type:SN IIn
See object 2017hcc [ATLAS17lsn]
We report spectroscopic observations with Keck/DEIMOS of old (~1-9 years post-explosion) type II supernovae detected by the Rubin/LSST, some of which are powered by on-going CSM interaction.
AstroNote 2026-242
Type: Object/s-Discovery/Classification
Released: 2026-08-08 19:04:08
ATLAS26jsq (AT2026yid): discovery of a candidate SN in ESO 234- G 013 (73 Mpc)
K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore, J. Weston, X. Sheng, C. R. Angus, D. Magill, A. J. Smith, …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026yid [ATLAS26jsq]
RA, DEC:20:22:32.434, -50:45:14.36
(305.635141, -50.753990)
Redshift:0.01596
Type:SN Ia
See object 2026yid [ATLAS26jsq]
Here we report the ATLAS discovery of the transient ATLAS26jsq (AT2026yid) in galaxy ESO 234- G 013 at magnitude m_o = 17.56 +/- 0.12. At a distance of 73 Mpc (redshift independent, from NED), the tr…
AstroNote 2026-241
Type: Object/s-Data/Analysis
Released: 2026-08-08 13:18:22
NEOWISE mid-infrared pre-identification of the late-time rebrightening supernovae SN 2020jfv and SN 2020izc
Kohki Uno (Columbia), Kishalay De (Columbia), Geoffrey Mo (Caltech/Carnegie Observatories) , Viraj Karambelkar (Columbi…
Keywords: Transient, Supernova, Infra-Red, Optical, Ultra-Violet
Related Objects:
2020jfv
RA, DEC:23:06:35.750, +00:36:43.60
(346.648958, 0.612111)
Redshift:0.01709
Type:SN IIb
See object 2020jfv
,
2020izc
RA, DEC:00:05:02.510, -07:06:03.02
(1.260458, -7.100839)
Redshift:0.012699
Type:SN II
See object 2020izc
We report the prior identification of late-time mid-infrared rebrightening in SN 2020jfv and SN 2020izc with WISE/NEOWISE, more than two years before their optical rebrightening in LSST EDP2. Persist…
AstroNote 2026-240
Type: Object/s-Discovery/Classification
Released: 2026-08-07 15:17:50
Reclassification of SN 2026sqf, the nearest Type Ia-CSM to-date
Nabeel Rehemtulla (Northwestern), Wynn Jacobson-Galán (Caltech), Lindsey Kwok (Northwestern), Adam A. Miller (Northwest…
Source Group: ZTF
Keywords: Transient, Supernova, Optical
Related Objects:
2026sqf [ZTF26abfmmvq]
RA, DEC:10:38:47.961, +53:30:34.10
(159.699839, 53.509471)
Redshift:0.003312
Type:SN Ia-CSM
See object 2026sqf [ZTF26abfmmvq]
Related Notes:
2026-230
2026-2402026-07-23 18:55:12
Title: SN 2026sqf new classification attempt with photometric and SED follow-up from the RAPAS ProAm network
Authors: Thierry Midavaine (I73, Club Eclipse, RC500), Christian Bui…
Source Group: RAPAS
We reclassify SN 2026sqf as a Type Ia-CSM SN, affirming the original proposal by Midavaine et al. (AstroNote 2026-230). Our NOT/ALFOSC spectra reveal features characteristic of Type Ia SNe (Fe III & …
AstroNote 2026-239
Type: Object/s-Data/Analysis
Released: 2026-08-05 22:29:18
Flash ionisation features in the rapidly evolving transient SN2026wpd
S. Srivastav and S. J. Smartt (Oxford)
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026wpd [ATLAS26jiy]
RA, DEC:01:28:20.623, +40:13:26.65
(22.085929, 40.224071)
Redshift:0.025
Type:SN Ibn/Icn
See object 2026wpd [ATLAS26jiy]
Related Notes:
2026-235
2026-2392026-08-02 18:03:06
Title: ATLAS26jiy (AT2026wpd): discovery of a candidate SN in CGCG 537-004 (100 Mpc)
Authors: K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore…
Source Group: ATLAS
We present followup observations of the fast evolving, blue and luminous transient SN 2026wpd. The light curve shows a rapid rise to an absolute magnitude of ~ -19 in ~6 days. The LT spectrum display…
AstroNote 2026-238
Type: Object/s-Data/Analysis
Released: 2026-08-05 02:04:08
Identification of Transient Precursors and Late-Time Rebrightening/Flattening in LSST EDP2
Yize Dong (Harvard/CfA), V. Ashley Villar (Harvard/CfA), Ryan J. Foley (UCSC), Qinan Wang (MIT), Gautham Narayan (UIUC/…
Source Group: VHU-TDA
Keywords: Spectroscopy, Transient, Supernova, TDE, Optical
Related Objects:
2017hcc
RA, DEC:00:03:50.590, -11:28:28.60
(0.960792, -11.474611)
Redshift:0.0173
Type:SN IIn
See object 2017hcc
,
2019iid
RA, DEC:12:20:31.469, +06:01:48.69
(185.131120, 6.030193)
Redshift:0.1
Type:SN Ia
See object 2019iid
,
2019mav
RA, DEC:22:48:17.121, -02:49:07.24
(342.071338, -2.818677)
Redshift:0.077
Type:SN Ia
See object 2019mav
,
2020izc
RA, DEC:00:05:02.510, -07:06:03.02
(1.260458, -7.100839)
Redshift:0.012699
Type:SN II
See object 2020izc
,
2020jfv
RA, DEC:23:06:35.750, +00:36:43.60
(346.648958, 0.612111)
Redshift:0.01709
Type:SN IIb
See object 2020jfv
,
2020usa
RA, DEC:22:26:13.590, -02:16:06.71
(336.556625, -2.268531)
Redshift:0.263
Type:SLSN-II
See object 2020usa
,
2020zpf
RA, DEC:23:12:40.484, -11:56:02.05
(348.168683, -11.933902)
Redshift:0.1
Type:SN Ia
See object 2020zpf
,
2020zso
RA, DEC:22:22:17.130, -07:15:59.08
(335.571375, -7.266411)
Redshift:0.061
Type:TDE
See object 2020zso
,
2021qth
RA, DEC:20:11:38.926, -21:09:36.64
(302.912191, -21.160179)
Redshift:0.0805
Type:TDE
See object 2021qth
,
2021zon
RA, DEC:00:29:50.931, -06:28:24.46
(7.462213, -6.473462)
Redshift:0.044
Type:SN IIb
See object 2021zon
,
2022pul
RA, DEC:12:26:48.846, +08:26:55.32
(186.703526, 8.448701)
Redshift:0.003
Type:SN Ia
See object 2022pul
,
2022rvy
RA, DEC:00:17:35.392, -11:17:10.46
(4.397468, -11.286240)
Redshift:0.099
Type:SN Ia
See object 2022rvy
,
2023swf
RA, DEC:21:05:58.530, -14:50:30.34
(316.493875, -14.841761)
Redshift:0.024
Type:SN II
See object 2023swf
,
2024kce
RA, DEC:12:29:49.560, +08:12:48.49
(187.456500, 8.213469)
Redshift:0.003
Type:SN Ia-pec
See object 2024kce
,
2024lwa
RA, DEC:22:32:47.058, -09:26:49.23
(338.196074, -9.447009)
Redshift:0.05689
Type:SN II
See object 2024lwa
,
2025aawk
RA, DEC:00:25:33.678, +02:16:17.57
(6.390324, 2.271548)
Redshift:0.0778
Type:SN II
See object 2025aawk
,
2025uue
RA, DEC:00:20:05.076, +08:30:41.89
(5.021151, 8.511636)
Redshift:0.01874
Type:SN IIn
See object 2025uue
,
2026ejf
RA, DEC:04:04:37.779, -48:30:07.25
(61.157411, -48.502013)
Redshift:0.96
Type:SLSN-I
See object 2026ejf
,
2026fgl
RA, DEC:09:56:52.360, +03:28:11.71
(149.218165, 3.469919)
Redshift:0.164
Type:SN Ia
See object 2026fgl
,
2026gzf
RA, DEC:09:59:42.872, +00:25:06.38
(149.928635, 0.418438)
Redshift:0.0343
Type:SN Ic-BL
See object 2026gzf
,
2026muw
RA, DEC:21:23:29.961, -07:40:49.04
(320.874838, -7.680289)
Redshift:0.061582
Type:SN IIn
See object 2026muw
,
2026pag
RA, DEC:21:46:05.755, -08:58:40.30
(326.523977, -8.977861)
Redshift:0.081
Type:TDE
See object 2026pag
We report the identification of 8 candidate transient precursors and 13 transients exhibiting unusually long-lived emission, late-time light-curve flattening, or rebrightening in LSST EDP2 coadded im…
AstroNote 2026-237
Type: Object/s-Data/Analysis
Released: 2026-08-04 22:46:40
DAO and UBC Southern Observatory photometric follow-up of selected transients (2026 July)
S. Chan (University of British Columbia - UBC), A. C. Boley (UBC), A. Araleh (UBC) & D. D. Balam (DAO/NRC)
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2026rhh
RA, DEC:18:32:23.579, +50:50:26.16
(278.098245, 50.840599)
Redshift:
Type:
See object 2026rhh
,
2026rla
RA, DEC:16:59:08.298, +40:26:51.49
(254.784575, 40.447635)
Redshift:
Type:
See object 2026rla
,
2026wbo
RA, DEC:15:37:08.700, +38:44:26.60
(234.286250, 38.740722)
Redshift:0.058
Type:SN Ia
See object 2026wbo
,
2026wcb
RA, DEC:16:17:39.868, +29:41:24.41
(244.416115, 29.690113)
Redshift:
Type:
See object 2026wcb
,
2026wki
RA, DEC:19:41:08.176, +60:49:17.78
(295.284065, 60.821605)
Redshift:
Type:
See object 2026wki
,
2026vlu
RA, DEC:20:24:46.321, +19:59:08.03
(306.193003, 19.985563)
Redshift:
Type:
See object 2026vlu
,
2026wht
RA, DEC:18:25:54.859, +08:49:04.34
(276.478581, 8.817872)
Redshift:
Type:
See object 2026wht
,
2026wjs
RA, DEC:23:47:50.899, +49:28:49.68
(356.962079, 49.480466)
Redshift:0.032202
Type:SN Ia
See object 2026wjs
,
2026ryu
RA, DEC:19:37:44.088, -05:35:43.37
(294.433700, -5.595381)
Redshift:
Type:
See object 2026ryu
,
2026ris
RA, DEC:15:53:49.860, -25:29:41.60
(238.457750, -25.494889)
Redshift:
Type:
See object 2026ris
,
2026roc
RA, DEC:20:02:39.395, -25:33:51.41
(300.664144, -25.564281)
Redshift:
Type:CV
See object 2026roc
,
2026tqt
RA, DEC:18:26:55.120, -17:32:28.10
(276.729667, -17.541139)
Redshift:
Type:
See object 2026tqt
,
2026vhh
RA, DEC:00:47:19.350, -72:40:04.60
(11.830625, -72.667944)
Redshift:
Type:
See object 2026vhh
We present (SDSS) g&r filter (DAO) and (Kron-Cousins) B-V, V & V-R) photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion As…
AstroNote 2026-236
Type: Object/s-Discovery/Classification
Released: 2026-08-03 23:41:47
Precursor Watch: Transformation of Precursor Candidate AT2026sfn into Type IIn Supernova
Wynn Jacobson-Galán, K-Ryan Hinds, Sam Rose, Kaustav K. Das, Mansi Kasliwal, Theophile Jegou du Laz, Thomas Culino, Chr…
Source Group: ZTF
Related Objects:
2026sfn [ZTF26abgbpyv]
RA, DEC:21:28:47.590, +20:31:03.21
(322.198290, 20.517559)
Redshift:0.0177
Type:SN IIn
See object 2026sfn [ZTF26abgbpyv]
We report the recent explosion of precursor candidate AT2026sfn as a Type IIn supernova, confirming the prediction made in the previous “Precursor Watch” Astronote 2026-217.
AstroNote 2026-235
Type: Object/s-Discovery/Classification
Released: 2026-08-02 19:19:55
ATLAS26jiy (AT2026wpd): discovery of a candidate SN in CGCG 537-004 (100 Mpc)
K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore, J. Weston, X. Sheng, C. R. Angus, D. Magill, A. J. Smith, …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026wpd [ATLAS26jiy]
RA, DEC:01:28:20.623, +40:13:26.65
(22.085929, 40.224071)
Redshift:0.025
Type:SN Ibn/Icn
See object 2026wpd [ATLAS26jiy]
Here we report the ATLAS discovery of the transient ATLAS26jiy (AT2026wpd) in galaxy CGCG 537-004 at magnitude m_o = 18.26 +/- 0.16. At a distance of 100 Mpc, the transient was discovered on MJD = 61…
AstroNote 2026-234
Type: Object/s-Discovery/Classification
Released: 2026-08-02 19:19:32
ATLAS26jja (AT2026wsy): discovery of a candidate SN in IC 4682 (45 Mpc)
K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore, J. Weston, X. Sheng, C. R. Angus, D. Magill, A. J. Smith, …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026wsy [ATLAS26jja]
RA, DEC:18:16:25.631, -71:35:10.14
(274.106798, -71.586150)
Redshift:0.01215
Type:SN II
See object 2026wsy [ATLAS26jja]
Here we report the ATLAS discovery of the transient ATLAS26jja (AT2026wsy) in galaxy IC 4682 at magnitude m_o = 18.67 +/- 0.17. At a distance of 45 Mpc (redshift independent, from NED), the transient…
AstroNote 2026-233
Type: Object/s-Data/Analysis
Released: 2026-07-31 07:43:02
Photometric observations of a Galactic Nova AT 2026rdg with BHTOM.space Global Telescope Network
P.J. Mikolajczyk (U.Wroclaw/NCBJ, PL), L. Wyrzykowski (U.Warsaw/NCBJ, PL/EASST.eu), F.-J. Hambsch (ROAD Observatory, Ch…
Source Group: BHTOM
Keywords: Photometry, Transient, Nova, Infra-Red, Optical
Related Objects:
2026rdg
RA, DEC:19:14:31.366, +12:03:53.60
(288.630693, 12.064890)
Redshift:0
Type:Nova
See object 2026rdg
We report on the optical photometric follow-up of AT 2026rdg conducted with the BHTOM.space Global Telescope Network.
AstroNote 2026-232
Type: Object/s-Discovery/Classification
Released: 2026-07-30 17:52:52
ZTF discovery of a fast and red transient AT2026wki/ZTF26abkoycd
James Freeburn, Anirudh Salgundi, Igor Andreoni (UNC), Thomas Culino (Caltech), Sushant Sharma Chaudhary, Michael W. Co…
Source Group: ZTF
Keywords: Transient
Related Objects:
2026wki [ZTF26abkoycd]
RA, DEC:19:41:08.176, +60:49:17.78
(295.284065, 60.821605)
Redshift:
Type:
See object 2026wki [ZTF26abkoycd]
We report observations of the red and fast fading transient AT2026wki/ZTF26abkoycd, identified in the ZTF alert stream. The transient faded by ~1.1 mag/day in g-band and its color is red (g-r~0.2 mag…
AstroNote 2026-231
Type: Object/s-Discovery/Classification
Released: 2026-07-29 10:08:42
Classification of the transient 2026plb/ZTF26abbwmoo as a SN type IIn
Amalija Rafaj Škriljevečki (Graz University of Technology, University of Graz), Eduardo Concepcion (Center for Astrophy…
Keywords: Transient, Supernova
Related Objects:
2026plb [ZTF26abbwmoo]
RA, DEC:20:56:47.260, -18:31:04.49
(314.196917, -18.517914)
Redshift:0.03
Type:SN IIn
See object 2026plb [ZTF26abbwmoo]
We report the classification of the bright nuclear transient 2026plb/ZTF26abbwmoo as a SN type IIn.
AstroNote 2026-230
Type: Object/s-Discovery/Classification
Released: 2026-07-23 18:55:12
SN 2026sqf new classification attempt with photometric and SED follow-up from the RAPAS ProAm network
Thierry Midavaine (I73, Club Eclipse, RC500), Christian Buil (Antibes, N254), Jean-Louis Dumont (R73, Tauxigny, SC400),…
Source Group: RAPAS
Keywords: Time-domain, Instrumentation, Photometry, Spectroscopy, Transient, Supernova, Optical
We report on the optical photometric follow-up of SN 2026sqf with RAPAS, a ProAm network using telescopes equipped with a set of filters RAPAS G, RAPAS Gbp and RAPAS Grp meeting Gaia G, Gbp and Grp p…
AstroNote 2026-229
Type: Object/s-Discovery/Classification
Released: 2026-07-22 20:54:17
Identificationa and follow-up observations of spectroscopically featureless and bright nuclear transient
K-Ryan Hinds, Christoffer Fremling, Mansi Kasliwal, Sam Rose, Maggie Li, Wynn Jacobson-Galán (Caltech), Avinash Singh (…
Source Group: ZTF
Related Objects:
2026plb [ZTF26abbwmoo]
RA, DEC:20:56:47.260, -18:31:04.49
(314.196917, -18.517914)
Redshift:0.03
Type:SN IIn
See object 2026plb [ZTF26abbwmoo]
We report the ongoing evolution of the bright, spectroscopically featureless nuclear transient ZTF26abbwmoo/AT 2026plb.
AstroNote 2026-228
Type: Object/s-Discovery/Classification
Released: 2026-07-20 22:00:08
ATLAS26iur (AT2026ved): discovery of a candidate SN in ESO119-G037(83 Mpc)
K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore, J. Weston, X. Sheng, C. R. Angus, D. Magill, A. J. Smith, …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026ved [ATLAS26iur]
RA, DEC:05:07:52.542, -61:11:36.99
(76.968925, -61.193607)
Redshift:0.01922
Type:SN II
See object 2026ved [ATLAS26iur]
Here we report the ATLAS discovery of the transient ATLAS26iur (AT2026ved) in galaxy ESO119-G037 at magnitude m_o = 18.05 +/- 0.08. At a distance of 83 Mpc, the transient was discovered on MJD = 6123…
AstroNote 2026-227
Type: Object/s-Discovery/Classification
Released: 2026-07-20 21:58:03
ATLAS26ivj (AT2026vek): discovery of a candidate SN in 2MASS J12202804+4826508 (103 Mpc)
X. Sheng (QUB), K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore, J. Weston, A. Aamer, C. R. Angus, D. Magil…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026vek [ATLAS26ivj]
RA, DEC:12:20:28.683, +48:26:39.30
(185.119513, 48.444250)
Redshift:
Type:
See object 2026vek [ATLAS26ivj]
Here we report the ATLAS discovery of the transient ATLAS26ivj (AT2026vek) in galaxy 2MASS J12202804+4826508 at magnitude m_w = 18.27 +/- 0.17. At a distance of 103 Mpc, the transient was discovered …
AstroNote 2026-226
Type: Object/s-Discovery/Classification
Released: 2026-07-20 14:31:10
ATLAS26iuo (AT2026veb): discovery of a candidate SN in MCG-03-34-076 (100 Mpc)
X. Sheng (QUB), K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore, J. Weston, C. R. Angus, D. Magill, A. J. S…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026veb [ATLAS26iuo]
RA, DEC:13:26:10.063, -16:31:39.35
(201.541930, -16.527597)
Redshift:
Type:
See object 2026veb [ATLAS26iuo]
Here we report the ATLAS discovery of the transient ATLAS26iuo (AT2026veb) in galaxy MCG-03-34-076 at magnitude m_o = 18.75 +/- 0.16. At a distance of 100 Mpc, the transient was discovered on MJD = 6…
AstroNote 2026-225
Type: Object/s-Discovery/Classification
Released: 2026-07-20 14:29:16
ATLAS26iup (AT2026vec): discovery of a candidate SN in CGCG 098-034 (93 Mpc)
X. Sheng (QUB), K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore, J. Weston, C. R. Angus, D. Magill, A. J. S…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026vec [ATLAS26iup]
RA, DEC:12:03:23.199, +20:01:09.60
(180.846663, 20.019334)
Redshift:0.021428
Type:SN Ia
See object 2026vec [ATLAS26iup]
Here we report the ATLAS discovery of the transient ATLAS26iup (AT2026vec) in galaxy CGCG 098-034 at magnitude m_o = 18.41 +/- 0.16. At a distance of 93 Mpc, the transient was discovered on MJD = 612…
AstroNote 2026-224
Type: Object/s-Discovery/Classification
Released: 2026-07-19 14:12:33
ATLAS26irw (AT2026vbh): discovery of a candidate SN in MCG -02-04-031 (72 Mpc)
X. Sheng (QUB), K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore, J. Weston, C. R. Angus, D. Magill, A. J. S…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026vbh [ATLAS26irw]
RA, DEC:01:21:27.834, -10:37:05.07
(20.365976, -10.618076)
Redshift:0.01834
Type:SN Ia
See object 2026vbh [ATLAS26irw]
Here we report the ATLAS discovery of the transient ATLAS26irw (AT2026vbh) in galaxy MCG -02-04-031 at magnitude m_o = 18.02 +/- 0.08. At a distance of 72 Mpc, the transient was discovered on MJD = 6…
AstroNote 2026-223
Type: Object/s-Discovery/Classification
Released: 2026-07-18 13:05:27
ATLAS26iqu (AT2026vay): discovery of a candidate SN in HCC 019 (81 Mpc)
X. Sheng (QUB), K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore, J. Weston, C. R. Angus, D. Magill, A. J…
Source Group: ATLAS
Keywords: Supernova
Here we report the ATLAS discovery of the transient ATLAS26iqu (AT2026vay) in galaxy HCC 019 at magnitude m_c = 18.60 +/- 0.12. At a distance of 81 Mpc, the transient was discovered on MJD = 61235.00…
AstroNote 2026-222
Type: Object/s-Data/Analysis
Released: 2026-07-18 10:22:43
Gamma-ray upper observations of SN 2026sqf with MAGIC
David Paneque (MPP Munich), Andrea Simongini (INAF-Rome, Uniroma2), Francesco Schiavone (INFN-Bari), on behalf of the M…
Related Objects:
2026sqf
RA, DEC:10:38:47.961, +53:30:34.10
(159.699839, 53.509471)
Redshift:0.003312
Type:SN Ia-CSM
See object 2026sqf
We report non-detection of gamma rays above 800 GeV of the nearby SN 2026sqf with the MAGIC telescopes.
AstroNote 2026-221
Type: Object/s-Discovery/Classification
Released: 2026-07-17 17:38:07
ZTF report of the luminous nuclear transient ZTF26aazzexf / AT2026pwc as a possible TDE-featureless
Erica Hammerstein (UC Berkeley), Itai Sfaradi (UC Berkeley), Ryan Chornock (UC Berkeley), Max Velasquez (UC Berkeley), …
Source Group: ZTF
Keywords: TDE
Related Objects:
2026pwc [ZTF26aazzexf]
RA, DEC:13:11:20.569, +79:19:36.02
(197.835704, 79.326671)
Redshift:0.526
Type:TDE-featureless
See object 2026pwc [ZTF26aazzexf]
We report the follow-up observations of ZTF26aazzexf / AT2026pwc which indicate a possible TDE origin. The source was selected by the tdescore ML classifier (Stein+2024, doi: 10.3847/2041-8213/ad3337…
AstroNote 2026-220
Type: Object/s-Discovery/Classification
Released: 2026-07-16 19:13:31
AT 2026rcf and AT 2026tzm: LSST and WFST candidate SN siblings in SDSS J234757.66+001135.0 or two images of a lensed SN?
I. Pérez-Fournon (IAC and ULL), F. Poidevin (IAC and ULL), D. Cano-Morales (ULL), I. Correa-Plasencia (ULL), A.E. Herná…
Source Group: SGLF
Keywords: Time-domain, Transient, Supernova
Related Objects:
2026rcf [LSST-AP-DO-170595943092060203]
RA, DEC:23:47:57.495, +00:11:36.78
(356.989564, 0.193549)
Redshift:0.18
Type:SN Ia
See object 2026rcf [LSST-AP-DO-170595943092060203]
,
2026tzm [WFST260708atocd]
RA, DEC:23:47:57.848, +00:11:36.73
(356.991032, 0.193536)
Redshift:0.18
Type:SN Ia
See object 2026tzm [WFST260708atocd]
We report on two possible supernovae in SDSS J234757.66+001135.0 (a spiral galaxy at a spectroscopic redshift of z = 0.1845583), AT 2026rcf and AT 2026tzm, discovered recently by LSST and WFST, respe…
AstroNote 2026-219
Type: Object/s-Data/Analysis
Released: 2026-07-16 11:33:14
SN 2026sqf: upper limits from an IceCube neutrino search
Yuhua Yao (University of Wisconsin-Madison), Angela Zegarelli (Ruhr-University Bochum) for the IceCube Collaboration
Keywords: Supernova, Neutrinos
Related Objects:
2026sqf [ZTF26abfmmvq]
RA, DEC:10:38:47.961, +53:30:34.10
(159.699839, 53.509471)
Redshift:0.003312
Type:SN Ia-CSM
See object 2026sqf [ZTF26abfmmvq]
Related Notes:
2026-214
2026-2192026-07-13 02:43:44
Title: Photometric Follow-up of SN 2026sqf with BHTOM.space Global Telescope Network
Authors: J. Majumdar (U.Warsaw), L. Wyrzykowski (U.Warsaw/NCBJ/EASST…
Source Group: BHTOM
AstroNote 2026-218
Type: Object/s-Data/Analysis
Released: 2026-07-16 04:44:10
DAO Photometric follow up of selected transients
M R. Kendurkar (GSNST)
Source Group: GSNST
Keywords: Surveys, Photometry, Transient, Nova, Optical
Related Objects:
2025hcw
RA, DEC:11:10:37.269, +35:25:31.31
(167.655287, 35.425364)
Redshift:0.075083
Type:SN Ia
See object 2025hcw
,
2025heg
RA, DEC:18:20:46.154, +19:37:30.82
(275.192307, 19.625227)
Redshift:0.0298
Type:SN Ia
See object 2025heg
,
2025hes
RA, DEC:17:01:47.829, +24:42:26.29
(255.449289, 24.707303)
Redshift:0.049751
Type:SN Ia
See object 2025hes
,
2025hkd
RA, DEC:12:58:03.001, +09:43:24.05
(194.512505, 9.723347)
Redshift:0.031
Type:SN Ia
See object 2025hkd
,
2025hmf
RA, DEC:19:43:37.401, +48:23:54.78
(295.905837, 48.398551)
Redshift:
Type:
See object 2025hmf
,
2025hnv
RA, DEC:14:37:59.937, +14:27:17.51
(219.499738, 14.454865)
Redshift:0.052
Type:SN Ia
See object 2025hnv
,
2025hoq
RA, DEC:16:01:43.972, +31:28:27.67
(240.433215, 31.474353)
Redshift:
Type:
See object 2025hoq
,
2025hvq
RA, DEC:11:31:26.531, +15:43:39.55
(172.860544, 15.727652)
Redshift:
Type:
See object 2025hvq
,
2025hxf
RA, DEC:15:53:05.008, +20:38:08.53
(238.270867, 20.635703)
Redshift:0.0262
Type:SN II
See object 2025hxf
,
2025hym
RA, DEC:14:35:25.751, +26:40:15.36
(218.857297, 26.670933)
Redshift:
Type:
See object 2025hym
,
2025hzp
RA, DEC:13:50:32.107, +23:21:13.15
(207.633778, 23.353653)
Redshift:
Type:
See object 2025hzp
,
2025iau
RA, DEC:13:50:44.931, +49:20:29.60
(207.687211, 49.341556)
Redshift:0.044
Type:SN Ia
See object 2025iau
,
2025icd
RA, DEC:16:03:01.079, +44:34:45.43
(240.754494, 44.579285)
Redshift:
Type:
See object 2025icd
,
2025ico
RA, DEC:15:40:30.911, +34:09:14.73
(235.128796, 34.154091)
Redshift:
Type:
See object 2025ico
,
2025idt
RA, DEC:12:49:22.019, +26:37:50.74
(192.341747, 26.630762)
Redshift:
Type:
See object 2025idt
,
2025ihj
RA, DEC:19:28:47.373, +41:54:30.21
(292.197388, 41.908392)
Redshift:
Type:
See object 2025ihj
,
2025iic
RA, DEC:18:30:06.369, +28:19:28.70
(277.526536, 28.324639)
Redshift:0.09
Type:SN Ia
See object 2025iic
,
2025iif
RA, DEC:16:00:20.675, +28:20:00.16
(240.086147, 28.333378)
Redshift:
Type:
See object 2025iif
,
2025iil
RA, DEC:15:19:13.649, +06:07:48.25
(229.806869, 6.130069)
Redshift:
Type:
See object 2025iil
,
2025iit
RA, DEC:12:59:35.338, +15:02:54.48
(194.897243, 15.048466)
Redshift:
Type:
See object 2025iit
,
2025iiv
RA, DEC:11:27:19.332, +22:02:59.55
(171.830549, 22.049875)
Redshift:
Type:
See object 2025iiv
,
2025ijv
RA, DEC:17:17:37.944, +25:54:58.16
(259.408101, 25.916157)
Redshift:
Type:
See object 2025ijv
,
2025ikg
RA, DEC:15:13:01.518, +34:39:56.88
(228.256327, 34.665801)
Redshift:0.07177
Type:SN Ia
See object 2025ikg
,
2025imk
RA, DEC:14:14:27.374, +13:36:36.80
(213.614059, 13.610221)
Redshift:0.07857
Type:SN Ia
See object 2025imk
,
2025imm
RA, DEC:11:06:24.930, +45:30:45.28
(166.603873, 45.512578)
Redshift:0.064
Type:SN Ia-91bg-like
See object 2025imm
We present (SDSS) g&r filter photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophysical Observatory) National Resear…
AstroNote 2026-217
Type: Object/s-Discovery/Classification
Released: 2026-07-14 19:11:39
Precursor Watch: Identification and Spectroscopic Follow-up of Low Luminosity Transients from ZTF and Rubin/LSST
Wynn Jacobson-Galán, K-Ryan Hinds, Sam Rose, Kaustav K. Das, Mansi Kasliwal, Theophile Jegou du Laz, Thomas Culino, Chr…
Source Group: ZTF
Related Objects:
2026sfn [ZTF26abgbpyv]
RA, DEC:21:28:47.590, +20:31:03.21
(322.198290, 20.517559)
Redshift:0.0177
Type:SN IIn
See object 2026sfn [ZTF26abgbpyv]
,
2026srw [ZTF26abctnjz]
RA, DEC:22:30:36.777, -00:06:36.54
(337.653236, -0.110149)
Redshift:0.0053
Type:Impostor-SN
See object 2026srw [ZTF26abctnjz]
,
2026qzl [LSST-AP-DO-170591540574421162]
RA, DEC:23:09:23.069, +01:00:10.50
(347.346122, 1.002916)
Redshift:
Type:
See object 2026qzl [LSST-AP-DO-170591540574421162]
We report identification and spectroscopic observations of low luminosity transients and supernova precursor candidates in the ZTF and Rubin/LSST alert streams.
AstroNote 2026-216
Type: Object/s-Discovery/Classification
Released: 2026-07-14 05:47:45
Classification of a Fast and Red Optical Transient in the LSST Alert Stream (170631094842425480 / AT 2026tim)
K-Ryan Hinds (Caltech), Daniel Perley (LJMU), Mansi Kasliwal (Caltech), Sam Whitebook (Caltech), Andrei-Alexandru Crist…
Source Group: ZTF
Related Objects:
2026tim [170631094842425480]
RA, DEC:20:07:41.012, -29:34:37.01
(301.920885, -29.576947)
Redshift:
Type:
See object 2026tim [170631094842425480]
Related Notes:
2026-212
2026-2162026-07-10 01:26:15
Title: Identification of a Fast and Red Optical Transient in the LSST Alert Stream (170631094842425480 / AT 2026tim)
Authors: Michael Camilo (Cornell), Anna Y. Q. Ho (Cornell), Daniel P…
Source Group: ZTF
We report the classification of a fast and red transient in the LSST alert stream (170631094842425480 / AT 2026tim) as stellar variability.
AstroNote 2026-215
Type: Object/s-Discovery/Classification
Released: 2026-07-14 00:57:55
Spectroscopic classification of SN 2026rcy/LSST 170587110502301802 as a hydrogen-poor superluminous supernova (SLSN-I) at a redshift of 0.7
Maggie L. Li, Sam Whitebook, Lin Yan (Caltech), Andrei-Alexandru Cristea (Institute of Science and Technology Austria),…
Keywords: Spectroscopy, Transient, Supernova, Optical
Related Objects:
2026rcy [LSST-AP-DO-170587110502301802]
RA, DEC:21:42:45.018, -17:41:11.12
(325.687576, -17.686422)
Redshift:0.71
Type:SLSN-I
See object 2026rcy [LSST-AP-DO-170587110502301802]
We report the spectroscopic classification of SN 2026rcy as a hydrogen-poor superluminous supernova (SLSN-I) at z ~ 0.7.
AstroNote 2026-214
Type: Object/s-Data/Analysis
Released: 2026-07-13 03:36:23
Photometric Follow-up of SN 2026sqf with BHTOM.space Global Telescope Network
J. Majumdar (U.Warsaw), L. Wyrzykowski (U.Warsaw/NCBJ/EASST.eu), P.J. Mikolajczyk (U.Wroclaw/NCBJ), P. Pessi (NCBJ), K…
Source Group: BHTOM
Keywords: Time-domain, Surveys, Transient, Supernova, Optical
Related Objects:
2026sqf
RA, DEC:10:38:47.961, +53:30:34.10
(159.699839, 53.509471)
Redshift:0.003312
Type:SN Ia-CSM
See object 2026sqf
We report on the optical photometric follow-up of SN 2026sqf conducted with the BHTOM.space Global Telescope Network.
AstroNote 2026-213
Type: Object/s-Data/Analysis
Released: 2026-07-12 18:46:41
Candidate emergent and fading 3 GHz radio sources at the positions of unclassified optical transients: a systematic TNS x VLASS search
Raul Abreu Dominguez (LambdAI Space)
Keywords: Time-domain, Surveys, Methods, TDE, AGN, Galaxy, Radio, Optical
Related Objects:
2020aboe
RA, DEC:00:22:32.315, +23:41:30.87
(5.634645, 23.691908)
Redshift:
Type:
See object 2020aboe
,
2020vdq
RA, DEC:10:08:53.440, +42:43:00.23
(152.222667, 42.716731)
Redshift:0.044
Type:TDE
See object 2020vdq
,
2020xmt
RA, DEC:09:07:14.728, +16:37:21.13
(136.811366, 16.622536)
Redshift:
Type:
See object 2020xmt
,
2021ahvo
RA, DEC:10:03:13.798, +28:39:44.53
(150.807493, 28.662368)
Redshift:
Type:
See object 2021ahvo
,
2020nbs
RA, DEC:21:14:22.540, -08:59:39.64
(318.593916, -8.994345)
Redshift:
Type:
See object 2020nbs
,
2018jir
RA, DEC:09:17:19.647, +11:37:42.59
(139.331864, 11.628497)
Redshift:
Type:
See object 2018jir
,
2021syi
RA, DEC:14:46:49.345, +15:46:19.28
(221.705603, 15.772023)
Redshift:
Type:
See object 2021syi
Related Notes:
2026-209
2026-2132026-07-06 19:24:04
Title: A delayed, transient radio flare and recurrent optical flaring in the previously quiescent galaxy LEDA 1691918 (AT 2020aboe)
Authors: Raul Abreu Dominguez (LambdAI Space)
We crossmatched all public TNS transients (about 187,000 in the VLASS footprint) with the CIRADA VLASS Quick Look epoch 1 and epoch 2 component catalogs, classifying each radio-coincident transient b…
AstroNote 2026-212
Type: Object/s-Discovery/Classification
Released: 2026-07-10 02:10:58
Identification of a Fast and Red Optical Transient in the LSST Alert Stream (170631094842425480 / AT 2026tim)
Michael Camilo (Cornell), Anna Y. Q. Ho (Cornell), Daniel Perley (LJMU), and Adam Miller (Northwestern)
Source Group: ZTF
Related Objects:
2026tim [170631094842425480]
RA, DEC:20:07:41.012, -29:34:37.01
(301.920885, -29.576947)
Redshift:
Type:
See object 2026tim [170631094842425480]
We report the identification of a fast and red transient in the LSST alert stream (170631094842425480 / AT 2026tim). It has a peak apparent extinction-corrected magnitude of m_z ~ 22.2 mag.
AstroNote 2026-211
Type: Object/s-Discovery/Classification
Released: 2026-07-09 23:23:49
ATLAS26ihd (AT2026sun): discovery of a candidate SN in GALEXASC J040327.94-574334.9 (73 Mpc)
K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore, J. Weston, X. Sheng, A. Aamer, C. R. Angus, D. Magill, A. …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026sun [ATLAS26ihd]
RA, DEC:04:03:27.102, -57:43:47.16
(60.862926, -57.729766)
Redshift:0.01701
Type:SN II
See object 2026sun [ATLAS26ihd]
Here we report the ATLAS discovery of the transient ATLAS26ihd (AT2026sun) in galaxy GALEXASC J040327.94-574334.9 at magnitude m_o = 18.33 +/- 0.10. At a distance of 73 Mpc, the transient was discove…
AstroNote 2026-210
Type: Object/s-Discovery/Classification
Released: 2026-07-08 06:28:14
Discovery of AT 2026rsp, a supernova candidate near peak — spectroscopic classification requested
Aadi Ajeesh Nair
Keywords: Time-domain, Photometry, Transient, Supernova, Optical
Related Objects:
2026rsp [ZTF26abdqbqw]
RA, DEC:22:22:35.923, +04:44:17.75
(335.649681, 4.738264)
Redshift:
Type:
See object 2026rsp [ZTF26abdqbqw]
We report the discovery of AT 2026rsp (ZTF26abdqbqw), which rose ~1.3 mag over 10 days to a peak of r ~ 19.8 around 2026-07-01/04 and is now slowly declining. ALeRCE light-curve classifiers favor a T…
AstroNote 2026-209
Type: Object/s-Data/Analysis
Released: 2026-07-06 19:24:04
A delayed, transient radio flare and recurrent optical flaring in the previously quiescent galaxy LEDA 1691918 (AT 2020aboe)
Raul Abreu Dominguez (LambdAI Space)
Keywords: Time-domain, Transient, TDE, AGN, Galaxy, Radio, Optical
Related Objects:
2020aboe [ZTF20actslnz]
RA, DEC:00:22:32.315, +23:41:30.87
(5.634645, 23.691908)
Redshift:
Type:
See object 2020aboe [ZTF20actslnz]
We report archival evidence for a repeating nuclear transient with a transient 3 GHz radio flare in LEDA 1691918, a massive early-type galaxy at z=0.0964 whose 2013 SDSS spectrum shows no AGN signatu…
AstroNote 2026-208
Type: Object/s-Discovery/Classification
Released: 2026-07-06 19:02:11
Transient Classification with Gemini
A. Cikota (NOIRLab/Gemini South), P. Pessi (NCBJ), K. Silva (NOIRLab/Gemini South), P. King (NOIRLab/Gemini South), P. …
Source Group: GeminiClass
Keywords: Spectroscopy, Transient, Supernova
Related Objects:
2026pxz
RA, DEC:13:54:19.629, -31:26:26.81
(208.581787, -31.440780)
Redshift:0.039
Type:SN Ia
See object 2026pxz
,
2026qfd
RA, DEC:21:59:43.845, -20:01:20.39
(329.932687, -20.022331)
Redshift:0.16
Type:SN Ia
See object 2026qfd
We report spectroscopic observations of 2 SNe Ia
AstroNote 2026-207
Type: Object/s-Data/Analysis
Released: 2026-07-03 15:48:28
DAO and UBC Southern Observatory photometric follow-up of selected transients 2026-IIII (May/June 2026)
S. Chan (University of British Columbia - UBC), A. C. Boley (UBC) & D. D. Balam (DAO/NRC)
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2026nth
RA, DEC:16:30:28.740, +53:52:51.27
(247.619751, 53.880907)
Redshift:
Type:
See object 2026nth
,
2026nuj
RA, DEC:16:08:55.913, +32:41:33.93
(242.232970, 32.692759)
Redshift:
Type:
See object 2026nuj
,
2026nux
RA, DEC:11:39:30.373, +55:56:35.19
(174.876553, 55.943109)
Redshift:0.05
Type:SN Ia
See object 2026nux
,
2026nwx
RA, DEC:15:29:56.427, +61:16:02.58
(232.485111, 61.267382)
Redshift:
Type:
See object 2026nwx
,
2026qco
RA, DEC:16:25:43.207, +46:14:34.29
(246.430030, 46.242857)
Redshift:0.07
Type:SN Ia
See object 2026qco
,
2026qui
RA, DEC:15:59:37.046, +07:51:01.33
(239.904360, 7.850369)
Redshift:
Type:
See object 2026qui
,
2026mqo
RA, DEC:13:32:50.941, -27:03:10.45
(203.212256, -27.052903)
Redshift:0.038
Type:SN II
See object 2026mqo
,
2026mxl
RA, DEC:12:52:09.438, -21:51:40.34
(193.039325, -21.861206)
Redshift:0.023
Type:SN Ia-91bg-like
See object 2026mxl
,
2026nco
RA, DEC:16:44:58.201, -12:01:14.11
(251.242503, -12.020586)
Redshift:
Type:
See object 2026nco
,
2026nmo
RA, DEC:14:23:56.626, -58:37:46.74
(215.985940, -58.629650)
Redshift:
Type:
See object 2026nmo
,
2026noc
RA, DEC:11:44:33.115, -68:48:32.94
(176.137979, -68.809150)
Redshift:
Type:Nova
See object 2026noc
,
2026ofr
RA, DEC:13:21:52.498, -36:38:07.54
(200.468742, -36.635427)
Redshift:0.003
Type:Nova
See object 2026ofr
,
2026ojj
RA, DEC:14:12:21.219, -29:05:56.81
(213.088410, -29.099115)
Redshift:
Type:
See object 2026ojj
,
2026qad
RA, DEC:16:19:04.997, -61:17:59.19
(244.770821, -61.299775)
Redshift:0.0128
Type:SN Ibn
See object 2026qad
,
2026puh
RA, DEC:19:38:38.955, -39:39:49.74
(294.662314, -39.663815)
Redshift:0.032
Type:SN II
See object 2026puh
,
2026pla
RA, DEC:13:32:00.031, -27:01:36.22
(203.000127, -27.026729)
Redshift:
Type:
See object 2026pla
,
2026qdr
RA, DEC:16:50:10.000, -18:27:46.30
(252.541667, -18.462861)
Redshift:
Type:
See object 2026qdr
,
2026qdn
RA, DEC:12:03:34.869, -06:44:37.39
(180.895285, -6.743720)
Redshift:
Type:
See object 2026qdn
,
2026qbu
RA, DEC:14:03:04.631, +08:56:52.98
(210.769297, 8.948051)
Redshift:0.02
Type:SN Ia
See object 2026qbu
,
2026qqg
RA, DEC:11:06:55.391, -04:07:04.72
(166.730797, -4.117978)
Redshift:
Type:
See object 2026qqg
We present (SDSS) g&r filter (DAO) and (Kron-Cousins - B, V & R) photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrop…
AstroNote 2026-206
Type: Object/s-Discovery/Classification
Released: 2026-06-30 08:45:11
Candidate SN with precursor activity in Rubin (LSST-AP-DO-170587106692825120) - AT2024lwa
H. F. Stevance (Oxford), D. R. Young (QUB), K. W. Smith(Oxford/QUB), S. J. Smartt (Oxford/QUB), M. Nicholl (QUB), R. D…
Source Group: Lasair
Keywords: Supernova
Related Objects:
2024lwa [LSST-AP-DO-170587106692825120]
RA, DEC:22:32:47.058, -09:26:49.23
(338.196074, -9.447009)
Redshift:0.05689
Type:SN II
See object 2024lwa [LSST-AP-DO-170587106692825120]
Here we report the discovery of a new transient LSST-AP-DO-170257199649521669 coincident with AT 2024lwa, in the Rubin LSST alert stream, identified by the Lasair broker with an LVRA score of 0.92. …
AstroNote 2026-205
Type: Object/s-Discovery/Classification
Released: 2026-06-26 21:09:55
Transient Classification with Gemini
P. Pessi (NCBJ), A. Cikota (NOIRLab/Gemini South), K. Silva (NOIRLab/Gemini South), P. King (NOIRLab/Gemini South), P. …
Source Group: GeminiClass
Keywords: Spectroscopy, Transient, Supernova
Related Objects:
2026puh
RA, DEC:19:38:38.955, -39:39:49.74
(294.662314, -39.663815)
Redshift:0.032
Type:SN II
See object 2026puh
,
2026qbu
RA, DEC:14:03:04.631, +08:56:52.98
(210.769297, 8.948051)
Redshift:0.02
Type:SN Ia
See object 2026qbu
We report spectroscopic observations of 1 SN Ia and 1 SN II.
AstroNote 2026-204
Type: Object/s-Discovery/Classification
Released: 2026-06-26 17:02:07
ATLAS26hsn (AT2026qbk): discovery of a candidate SN in ESO 153- G 007 (85 Mpc)
K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, T. Moore, J. Weston, X. Sheng, A. Aamer, C. R. Angus, D. Magill, A. …
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026qbk [ATLAS26hsn]
RA, DEC:01:59:33.527, -56:21:23.15
(29.889695, -56.356431)
Redshift:0.01943
Type:SN Ib
See object 2026qbk [ATLAS26hsn]
Here we report the ATLAS discovery of the transient ATLAS26hsn (AT2026qbk) in galaxy ESO 153- G 007 at magnitude m_o = 17.64 +/- 0.10. At a distance of 85 Mpc, the transient was discovered on MJD = 6…
AstroNote 2026-203
Type: Object/s-Data/Analysis
Released: 2026-06-23 16:04:02
NuSTAR X-ray upper limit of 2026obc
Yize Dong (Harvard/CfA), Daichi Tsuna (Harvard/CfA), Ashley Villar (Harvard/CfA)
Source Group: VHU-TDA
Related Objects:
2026obc
RA, DEC:01:07:49.433, +41:59:43.39
(16.955971, 41.995386)
Redshift:0.0195
Type:SN Icn
See object 2026obc
We report the NuSTAR X-ray nondetection of SN 2026obc.
AstroNote 2026-202
Type: Object/s-Discovery/Classification
Released: 2026-06-20 21:22:45
Transient Classification with Gemini
A. Cikota (NOIRLab/Gemini South), P. Pessi (NCBJ), P. King (NOIRLab/Gemini South), P. Candia (NOIRLab/Gemini South), D…
Source Group: GeminiClass
Keywords: Photometry, Transient, Supernova
Related Objects:
2026pkz
RA, DEC:12:41:15.906, -31:20:18.36
(190.316276, -31.338432)
Redshift:0.053
Type:SN Ia
See object 2026pkz
,
2026pmv
RA, DEC:21:02:03.850, -43:20:07.08
(315.516042, -43.335300)
Redshift:0.087
Type:SN Ia
See object 2026pmv
,
2026pkg
RA, DEC:13:43:31.316, -28:57:13.11
(205.880483, -28.953642)
Redshift:0.118
Type:SN Ia
See object 2026pkg
,
2026pmo
RA, DEC:10:37:40.071, +15:27:19.56
(159.416964, 15.455433)
Redshift:0.05
Type:SN Ia
See object 2026pmo
,
2026pnc
RA, DEC:21:31:25.556, -49:18:55.31
(322.856485, -49.315365)
Redshift:0.108
Type:SN Ia
See object 2026pnc
,
2026pil
RA, DEC:22:31:23.085, -19:34:46.69
(337.846189, -19.579635)
Redshift:0.111
Type:SN Ia
See object 2026pil
We report spectroscopic observations of 6 SNe Ia.
AstroNote 2026-201
Type: Object/s-Discovery/Classification
Released: 2026-06-20 18:02:35
Late-Time Re-brightening of AT 2025amdo Identified by ORACLE-2 Omni
V. G. Shah, C. Liu, N. Rehemtulla, A. A. Miller (Northwestern, CIERA), J. Sollerman, and A. Singh (Stockholm University…
Source Group: ZTF
Keywords: Photometry, Spectroscopy, Supernova
Related Objects:
2025amdo
RA, DEC:10:37:14.965, +30:37:29.09
(159.312353, 30.624747)
Redshift:0.08
Type:SN I
See object 2025amdo
,
2023aew
RA, DEC:17:40:51.370, +66:12:22.75
(265.214042, 66.206319)
Redshift:0.025
Type:SN IIb
See object 2023aew
We report a late-time re-brightening of AT 2025amdo (~185 days after the initial peak) identified by ORACLE-2 Omni, a multimodal hierarchical classifier developed for real-time monitoring of the Zwic…
AstroNote 2026-200
Type: Object/s-Data/Analysis
Released: 2026-06-20 17:38:49
DAO Photometric follow up of selected transients
M R. Kendurkar (GSNST)
Source Group: GSNST
Keywords: Surveys, Photometry, Transient, Nova, Optical
Related Objects:
2026paj [GOTO26fvy]
RA, DEC:17:48:25.737, +32:00:08.98
(267.107236, 32.002494)
Redshift:
Type:
See object 2026paj [GOTO26fvy]
,
2026ozw [ZTF26abackhg]
RA, DEC:18:26:16.249, +32:18:13.14
(276.567703, 32.303651)
Redshift:
Type:
See object 2026ozw [ZTF26abackhg]
,
2026ous [ZTF26abamsvx]
RA, DEC:19:46:21.852, +40:57:54.19
(296.591049, 40.965052)
Redshift:
Type:
See object 2026ous [ZTF26abamsvx]
,
2026ong [GOTO26fqf]
RA, DEC:20:57:52.469, +34:16:38.65
(314.468620, 34.277403)
Redshift:0.111
Type:SN Ia
See object 2026ong [GOTO26fqf]
,
2026ogd [ZTF26aazmplv]
RA, DEC:18:15:31.975, +33:07:15.06
(273.883231, 33.120850)
Redshift:0.073
Type:SN Ia
See object 2026ogd [ZTF26aazmplv]
,
2026osc [ZTF26aazmngk]
RA, DEC:21:42:45.015, +13:53:40.77
(325.687564, 13.894657)
Redshift:0.049164
Type:SN IIn
See object 2026osc [ZTF26aazmngk]
We present (SDSS) g&r filter photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophysical Observatory) National Resear…
AstroNote 2026-199
Type: Object/s-Discovery/Classification
Released: 2026-06-17 20:51:31
ATLAS26hix (AT2026pky): discovery of a candidate SN in NGC 7490 (90 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:
2026pky [ATLAS26hix]
RA, DEC:23:07:25.440, +32:22:46.66
(346.856002, 32.379628)
Redshift:0.022
Type:SN IIP
See object 2026pky [ATLAS26hix]
Here we report the ATLAS discovery of the transient ATLAS26hix (AT2026pky) in galaxy NGC 7490 at magnitude m_o = 18.74 +/- 0.12. At a distance of 90 Mpc, the transient was discovered on MJD = 61207.5…
AstroNote 2026-198
Type: Object/s-Data/Analysis
Released: 2026-06-17 04:17:37
DAO Photometric follow up of selected transients
M R. Kendurkar (GSNST)
Source Group: GSNST
Keywords: Surveys, Photometry, Transient, Nova, Optical
Related Objects:
2026osq [ASASSN-26dr]
RA, DEC:21:11:25.332, +14:14:29.57
(317.855550, 14.241547)
Redshift:0.03
Type:SN Ia
See object 2026osq [ASASSN-26dr]
,
2026our
RA, DEC:18:56:02.241, +35:57:00.70
(284.009338, 35.950195)
Redshift:
Type:
See object 2026our
,
2026owd [GOTO26fsy]
RA, DEC:20:27:57.651, +12:10:22.06
(306.990213, 12.172796)
Redshift:0.105
Type:SN Ia
See object 2026owd [GOTO26fsy]
,
2026owx [PS26bwh]
RA, DEC:17:58:02.261, +28:14:49.53
(269.509421, 28.247091)
Redshift:0.05
Type:SN II
See object 2026owx [PS26bwh]
,
2026oxt [ATLAS26hcx]
RA, DEC:16:00:10.377, +22:09:10.94
(240.043238, 22.153040)
Redshift:
Type:
See object 2026oxt [ATLAS26hcx]
We present (SDSS) g&r filter photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophysical Observatory) National Resear…
AstroNote 2026-197
Type: Object/s-Discovery/Classification
Released: 2026-06-16 17:02:12
ATLAS26hif (AT2026pjn): discovery of a candidate supernova or transient in CGCG012-055 (96 Mpc)
A. J. Smith, M. Nicholl (QUB), K. W. Smith (Oxford/QUB), D. R. Young, M. Fulton, M. McCollum, T. Moore, J. Weston, X. S…
Source Group: ATLAS
Keywords: Supernova
Related Objects:
2026pjn [ATLAS26hif]
RA, DEC:11:40:21.735, -02:42:13.00
(175.090563, -2.703612)
Redshift:
Type:
See object 2026pjn [ATLAS26hif]
Here we report the ATLAS discovery of the transient ATLAS26hif (AT2026pjn), close to the nucleus of the galaxy CGCG012-055 at magnitude m_r = 17.1. At a distance of 96 Mpc, the transient was disco…

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