RA/DEC (2000)
03:12:59.217 +17:41:45.18
48.2467378664 +17.6958834877
Type
SN Ia
Redshift
0.03
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-12-07 01:50:19.104
TNS AT
Y
Public
Y
Discovery Mag
19.32
Filter
L-GOTO
Reporter/s
A. Kumar, G. Ramsay, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, R. Starling, B. Gompertz, B. Godson, T. Killestein, D. O'Neill, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025afzm - 2025-12-11 05:46:21 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
▌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

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌GOTO-N_GOTO-2_L
 ▌PS2_GPC2_w
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌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
22559 2025-12-11 05:46:21 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025afzm_2025-12-11_05-46-20.974322_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-12-06 22:42:12 - 2025-12-06 22:42:12 2461016.44597 - 2461016.44597 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536691 2025-12-06 22:42:12 2461016.44597 18.93 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-12-06 22:29:48 - 2025-12-06 22:29:48 2461016.43736 - 2461016.43736 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536666 2025-12-06 22:29:48 2461016.43736 19.2 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
w-P1 PS2_GPC2 2025-12-15 05:45:52 - 2025-12-15 05:45:52 2461024.74019 - 2461024.74019 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
546761 2025-12-15 05:45:52 2461024.74019 17.16 0.01 22 ABMag w-P1 PS2_GPC2 45 Robot
L-GOTO GOTO-N_GOTO-1 2025-12-07 01:50:19 - 2025-12-07 01:50:19 2461016.576611 - 2461016.576611 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536667 2025-12-07 01:50:19 2461016.576611 19.32 0.21 ABMag L-GOTO GOTO-N_GOTO-1 180
r-ZTF P48_ZTF-Cam 2025-12-05 10:10:40 - 2025-12-06 07:21:03 2461014.9240741 - 2461015.8062847 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537339 2025-12-06 07:21:03 2461015.8062847 19.5517 0.175012 ABMag r-ZTF P48_ZTF-Cam
537338 2025-12-05 10:10:40 2461014.9240741 19.4063 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-12-05 05:57:51 - 2025-12-11 04:10:20 2461014.7485069 - 2461020.6738426 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537340 2025-12-11 04:10:20 2461020.6738426 17.7362 0.0475292 ABMag g-ZTF P48_ZTF-Cam
539262 2025-12-07 02:16:51 2461016.5950347 19.3097 0.2003 19.7044 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
539261 2025-12-05 05:57:51 2461014.7485069 17.7393 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-12-08 06:54:12 - 2025-12-08 06:54:12 2461017.78764 - 2461017.78764 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536692 2025-12-08 06:54:12 2461017.78764 18.856 0.137 19.27 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
285436 2026-01-01 21:17:00 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 03:12:59.217 +17:41:45.18 2025-12-15 05:45:52.416 17.16 w-P1 PSN PS25mhp Pan-STARRS N
280790 2025-12-15 19:15:53 Fink Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al. Fink ZTF 03:12:59.216 +17:41:45.18 2025-12-07 02:16:50.998 19.3097 g-ZTF PSN ZTF25acgdelc ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25acgdelc N
279945 2025-12-11 04:34:15 BTSbot_bot Nabeel Rehemtulla (CIERA,NU),Wynn Jacobson-Galán (Caltech) et al. ZTF ZTF 03:12:59.212 +17:41:45.20 2025-12-06 07:21:02.998 19.5517 r-ZTF PSN ZTF25acgdelc ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
279632 2025-12-08 09:48:07 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 03:12:59.197 +17:41:45.07 2025-12-08 06:54:12.096 18.856 orange-ATLAS PSN ATLAS25pja ATLAS N
279621 2025-12-08 08:14:35 GOTO_bot A. Kumar,G. Ramsay,K. Ackley et al. GOTO GOTO 03:12:59.220 +17:41:45.24 2025-12-07 01:50:19.104 19.32 L-GOTO Other GOTO25lfd GOTO 2025TNSTR4874....1K N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22558 2025-12-11 06:39:57 ZTF_Bot1 J. Sollerman, S. Covarrubias, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN Ia 0.03 1 ZTF 2025TNSCR4933....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
22559 2025-12-11 05:46:21 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025afzm_2025-12-11_05-46-20.974322_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Thu, 01/01/2026 - 21:17

Object coordinates updated

Object coordinates updated according to AT-report 285436 of Group Pan-STARRS
Previous RA, DEC: 03:12:59.216, +17:41:45.18 (48.246734275, +17.6958844)
Updated RA, DEC: 03:12:59.217, +17:41:45.18 (48.2467378664, +17.6958834877)

TNS
System

Mon, 12/15/2025 - 19:15

Object coordinates updated

Object coordinates updated according to AT-report 280790 of Group ZTF
Previous RA, DEC: 03:12:59.212, +17:41:45.20 (48.2467153, +17.6958895)
Updated RA, DEC: 03:12:59.216, +17:41:45.18 (48.246734275, +17.6958844)

TNS
System

Thu, 12/11/2025 - 04:34

Object coordinates updated

Object coordinates updated according to AT-report 279945 of Group ZTF
Previous RA, DEC: 03:12:59.197, +17:41:45.07 (48.2466528571, +17.6958528571)
Updated RA, DEC: 03:12:59.212, +17:41:45.20 (48.2467153, +17.6958895)

TNS
System

Mon, 12/08/2025 - 09:48

Object coordinates updated

Object coordinates updated according to AT-report 279632 of Group ATLAS
Previous RA, DEC: 03:12:59.220, +17:41:45.24 (48.246748, +17.695899)
Updated RA, DEC: 03:12:59.197, +17:41:45.07 (48.2466528571, +17.6958528571)