RA/DEC (2000)
23:56:39.796 +38:54:59.25
359.165815 +38.916459
Type
SN II
Redshift
0.04
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-10-10 02:03:33.984
TNS AT
Y
Public
Y
Discovery Mag
19.18
Filter
L-GOTO
Reporter/s
D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration

Spectra

 SN_2025zsf - 2025-10-25 04:32:44 P60 / SEDM (ZTF)z=
Show H at z=vexp= km/s
Show He at z=vexp= km/s
Show He II at z=vexp= km/s
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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

 ATLAS-TDO_ATLAS-05_wide
 LAST_LAST-Cam_Clear
 GOTO-N_GOTO-2_L
 GOTO-N_GOTO-1_L
 P48_ZTF-Cam_r
 P48_ZTF-Cam_g
 ATLAS-MLO_ATLAS-01_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
22284 2025-10-25 04:32:44 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025zsf_2025-10-25_04-32-44.249839_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-10-10 01:10:24 - 2025-10-10 01:10:24 2460958.54889 - 2460958.54889 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
523823 2025-10-10 01:10:24 2460958.54889 19.17 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
Clear- LAST_LAST-Cam 2025-10-31 17:01:17 - 2025-11-15 16:52:53 2460980.20923 - 2460995.20339 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
531182 2025-11-15 16:52:53 2460995.20339 19.78 ABMag Clear- LAST_LAST-Cam 400
531181 2025-10-31 17:01:17 2460980.20923 19.47 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-10-10 02:03:34 - 2025-10-10 02:03:34 2460958.585812 - 2460958.585812 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
522676 2025-10-10 02:03:34 2460958.585812 19.18 0.16 ABMag L-GOTO GOTO-N_GOTO-2 360
L-GOTO GOTO-N_GOTO-1 2025-10-09 03:37:57 - 2025-10-09 03:37:57 2460957.651345 - 2460957.651345 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
522675 2025-10-09 03:37:57 2460957.651345 19.2 ABMag L-GOTO GOTO-N_GOTO-1 270 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-10-09 05:41:59 - 2025-10-12 07:51:27 2460957.7374884 - 2460960.8273958 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
523172 2025-10-12 07:51:27 2460960.8273958 19.0114 0.103737 ABMag r-ZTF P48_ZTF-Cam
523171 2025-10-09 05:41:59 2460957.7374884 19.5629 0.212398 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-10-07 07:51:00 - 2025-10-07 07:51:00 2460955.8270833 - 2460955.8270833 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
523170 2025-10-07 07:51:00 2460955.8270833 19.1126 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-10-12 09:29:18 - 2025-10-12 09:29:18 2460960.89535 - 2460960.89535 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
523824 2025-10-12 09:29:18 2460960.89535 19.095 0.163 19.36 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 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
276836 2025-11-15 20:14:55 LAST_Bot1 E. O. Ofek (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al. LAST LAST 23:56:39.741 +38:54:59.17 2025-11-15 16:52:52.896 19.78 Clear- PSN LAST N
273344 2025-10-14 10:57:59 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 23:56:39.796 +38:54:59.22 2025-10-12 09:29:18.240 19.095 orange-ATLAS PSN ATLAS25mot ATLAS N
273024 2025-10-12 14:19:15 Fritz Jacob Wise (LJMU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 23:56:39.796 +38:54:59.25 2025-10-09 05:41:58.997 19.5629 r-ZTF PSN ZTF25abwgpjb ZTF N
272689 2025-10-10 06:52:44 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 23:56:39.820 +38:54:59.22 2025-10-10 02:03:33.984 19.18 L-GOTO Other GOTO25iit GOTO 2025TNSTR4056....1O N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22284 2025-10-25 07:34:57 ZTF_Bot1 J. Sollerman, S. Covarrubias, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN II 0.04 1 ZTF 2025TNSCR4294....1S
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
22284 2025-10-25 04:32:44 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025zsf_2025-10-25_04-32-44.249839_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 273024 of Group ZTF
Previous RA, DEC: 23:56:39.820, +38:54:59.22 (359.165915, +38.91645)
Updated RA, DEC: 23:56:39.796, +38:54:59.25 (359.165815, +38.916459)