RA/DEC (2000)
02:44:25.311 -24:34:08.58
41.1054633 -24.5690487
Type
SN II
Redshift
0.02
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-10-28 12:45:19.872
TNS AT
Y
Public
Y
Discovery Mag
18.468
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill, P. J. Broda (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025abyc - 2025-11-02 00:00:00 UH88 / SNIFS (SCAT)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
▌Show C II at z=vexp= km/s
▌Show C III at z=vexp= km/s
▌Show C IV at z=vexp= km/s
▌Show N II at z=vexp= km/s
▌Show N III at z=vexp= km/s
▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
▌Show [O I] at z=vexp= km/s
▌Show O II at z=vexp= km/s
▌Show [O II] at z=vexp= km/s
▌Show [O III] at z=vexp= km/s
▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌GOTO-S_GOTO-4_L
 ▌GOTO-N_GOTO-2_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌P48_ZTF-Cam_r
 ▌ATLAS-HKO_ATLAS-02_orange
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
 ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
22357 2025-11-02 00:00:00 UH88 / SNIFS Angus SCAT tns_2025abyc_2025-11-02_UH88_SNIFS_SCAT.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-10-24 13:55:57 - 2025-10-24 13:55:57 2460973.080516 - 2460973.080516 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
535101 2025-10-24 13:55:57 2460973.080516 19.8 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-11-29 21:54:19 - 2025-11-29 21:54:19 2461009.412721 - 2461009.412721 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
535102 2025-11-29 21:54:19 2461009.412721 17.78 0.05 ABMag L-GOTO GOTO-N_GOTO-2 180
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-10-24 04:12:40 - 2025-10-24 04:12:40 2460972.67546 - 2460972.67546 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
527795 2025-10-24 04:12:40 2460972.67546 19.27 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2025-11-11 01:33:50 - 2025-11-11 01:33:50 2460990.565162 - 2460990.565162 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
530182 2025-11-11 01:33:50 2460990.565162 17.41 0.04 20.27 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-10-21 05:09:26 - 2025-10-21 05:09:26 2460969.7148843 - 2460969.7148843 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
530181 2025-10-21 05:09:26 2460969.7148843 20.88 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2025-10-27 08:41:24 - 2025-10-31 07:29:33 2460975.8620833 - 2460979.8121875 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
528016 2025-10-31 07:29:33 2460979.8121875 17.6901 0.0499169 ABMag r-ZTF P48_ZTF-Cam
528015 2025-10-29 08:32:23 2460977.8558218 18.0461 0.0540338 ABMag r-ZTF P48_ZTF-Cam
528014 2025-10-27 08:41:24 2460975.8620833 19.9015 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-10-28 12:45:20 - 2025-10-28 12:45:20 2460977.03148 - 2460977.03148 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
527796 2025-10-28 12:45:20 2460977.03148 18.468 0.118 18.99 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
278846 2025-11-30 09:01:56 GOTO_bot G. Ramsay,K. Ackley,M. Dyer et al. GOTO GOTO 02:44:25.309 -24:34:08.41 2025-11-29 21:54:19.008 17.78 L-GOTO Other GOTO25kvh GOTO N
276278 2025-11-11 08:12:02 BlackGEM_Bot1 G. Ramsay,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 02:44:25.334 -24:34:08.76 2025-11-11 01:33:50.000 17.41 BG-q-BlackGem PSN BGEM J024425.33-243408.8 BlackGEM N
275312 2025-10-31 07:38:32 BTSbot_bot Nabeel Rehemtulla (CIERA,NU),Wynn Jacobson-Galán (Caltech) et al. ZTF ZTF 02:44:25.311 -24:34:08.58 2025-10-29 08:32:23.003 18.0461 r-ZTF PSN ZTF25acbcfzr ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
275220 2025-10-30 11:44:42 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 02:44:25.301 -24:34:08.49 2025-10-28 12:45:19.872 18.468 orange-ATLAS PSN ATLAS25nlw ATLAS 2025TNSTR4358....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22356 2025-11-05 23:55:29 Miranda Kong David Jones SCAT SN II 0.02 1 SCAT 2025TNSCR4452....1J
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
22357 2025-11-02 00:00:00 UH88 / SNIFS Angus SCAT tns_2025abyc_2025-11-02_UH88_SNIFS_SCAT.dat Object

Comments

TNS
System

Fri, 10/31/2025 - 07:38

Object coordinates updated

Object coordinates updated according to AT-report 275312 of Group ZTF
Previous RA, DEC: 02:44:25.301, -24:34:08.49 (41.10542, -24.5690257143)
Updated RA, DEC: 02:44:25.311, -24:34:08.58 (41.1054633, -24.5690487)