RA/DEC (2000)
02:03:03.912 +04:14:37.24
30.7663010688 +4.24367725701
Type
SN Ia
Redshift
0.019
Discovery ReportClassification Report
Related AstroNotes: 2025-331
Reporting Group
WFST
Discovering Data Source
WFST
Discovery Date
2025-11-29 17:26:01.000
TNS AT
Y
Public
Y
Host Name
Z 413-33
Host Redshift
0.018993
Discovery Mag
20.83
Filter
g-WFST
Reporter/s
Dezheng Meng, Zelin Xu, Weiyu Wu, Junhan Zhao, Zhengyan Liu, Ziqing Jia, Ji-an Jiang (USTC) on behalf of the WFST collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025afih - 2025-12-08 18:41:29 Lesedi / Mookodi (BlackGEM)z=
 ▌SN_2025afih - 2025-12-08 12:36:24 Lijiang-2.4m / YFOSC (LiONS)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

 ▌WFST_WFST-WFC_g
 ▌LAST_LAST-Cam_Clear
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌ATLAS-STH_ATLAS-03_orange
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_g
 ▌PS1_GPC1_i
   
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
22545 2025-12-08 18:41:29 Lesedi / Mookodi 600 N. Erasmus, S. Potter, C. van Gend, H. Worters, S. Chandra, D. Cunnama, M. Hlakola, P. Rabe, R. Julie (all SAAO) Orapeleng Mogawana BlackGEM tns_2025afih_2025-12-08_18-41-29.076_Lesedi_Mookodi_BlackGEM.dat Object The spectrum was taken as part of the SAAO IO rapid follow-up program [1]. The spectrum was obtained with the widest (4") slit width, resulting in a spectral resolution of R ~ 200 at 6000 Angstrom. [1] https://doi.org/10.1117/12.3015250
22543 2025-12-08 12:36:24 Lijiang-2.4m / YFOSC Jujia Zhang LiONS tns_2025afih_2025-12-08_12-36-23.63_Lijiang-2.4m_YFOSC_LiONS.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-WFST WFST_WFST-WFC 2025-11-28 16:40:25 - 2025-11-29 17:26:01 2461008.1947338 - 2461009.2264005 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
535235 2025-11-29 17:26:01 2461009.2264005 20.83 0.05 ABMag g-WFST WFST_WFST-WFC 60
535234 2025-11-28 16:40:25 2461008.1947338 22.68 ABMag g-WFST WFST_WFST-WFC 90 [Last non detection]
Clear- LAST_LAST-Cam 2025-11-19 16:59:42 - 2025-12-08 16:10:44 2460999.20813 - 2461018.17412 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536864 2025-12-08 16:10:44 2461018.17412 16.99 ABMag Clear- LAST_LAST-Cam 400
536863 2025-11-19 16:59:42 2460999.20813 19.91 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-12-08 00:50:44 - 2025-12-08 00:50:44 2461017.53523 - 2461017.53523 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536637 2025-12-08 00:50:44 2461017.53523 16.913 0.061 18.86 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2025-12-05 21:15:08 - 2025-12-05 21:15:08 2461015.38551 - 2461015.38551 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536636 2025-12-05 21:15:08 2461015.38551 17.39 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-11-28 21:03:20 - 2025-12-03 21:26:02 2461008.377307 - 2461013.393078 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
535947 2025-12-03 21:26:02 2461013.393078 17.92 0.08 ABMag L-GOTO GOTO-N_GOTO-1 180
535946 2025-11-28 21:03:20 2461008.377307 19.8 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
g-ZTF P48_ZTF-Cam 2025-11-29 05:15:24 - 2025-12-06 05:39:28 2461008.7190278 - 2461015.7357407 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536292 2025-12-06 05:39:28 2461015.7357407 17.1939 0.056406 ABMag g-ZTF P48_ZTF-Cam
536291 2025-11-30 05:13:52 2461009.717963 19.4198 0.180749 ABMag g-ZTF P48_ZTF-Cam
536290 2025-11-29 05:15:24 2461008.7190278 20.3341 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
i-P1 PS1_GPC1 2025-12-07 08:08:26 - 2025-12-07 08:08:26 2461016.83919 - 2461016.83919 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
539252 2025-12-07 08:08:26 2461016.83919 17.25 0.02 20.7 ABMag i-P1 PS1_GPC1 45 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
280782 2025-12-15 18:16:59 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 02:03:03.912 +04:14:37.24 2025-12-07 08:08:26.016 17.25 i-P1 PSN PS25iqd Pan-STARRS N
279709 2025-12-08 16:40:31 LAST_Bot1 E. Segre (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al. LAST LAST 02:03:03.867 +04:14:37.84 2025-12-08 16:10:43.968 16.99 Clear- PSN LAST N
279610 2025-12-08 05:49:16 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 02:03:03.924 +04:14:37.13 2025-12-08 00:50:43.872 16.913 orange-ATLAS PSN ATLAS25piw ATLAS N
279454 2025-12-06 07:10:45 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 02:03:03.902 +04:14:37.14 2025-11-30 05:13:52.003 19.4198 g-ZTF PSN ZTF25acfkvbq ZTF N
279318 2025-12-04 10:44:54 GOTO_bot A. Kumar,D. O'Neill,K. Ackley et al. GOTO GOTO 02:03:03.912 +04:14:37.64 2025-12-03 21:26:02.112 17.92 L-GOTO Other GOTO25lae GOTO N
278908 2025-11-30 16:47:50 Dezheng Meng Dezheng Meng,Zelin Xu,Weiyu Wu et al. WFST WFST 02:03:03.912 +04:14:37.22 2025-11-29 17:26:01.000 20.83 g-WFST PSN Z 413-33 WFST251129euxe WFST Host galaxy information is from https://simbad.cds.unistra.fr/simbad/sim-id?Ident=%401407700&Name=Z%20413-33. 2025TNSTR4769....1M N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22544 2025-12-09 12:35:27 Orapeleng Mogawana Orapeleng Mogawana (UCT/SAAO) BlackGEM SN Ia 0.019 1 1 BlackGEM, MeerLICHT, SAAO IO Spectral template matching using SNID (Blondin & Tonry 2007, ApJ, 666, 1024) yields a best match to Ia-norm SN 2003W ~10 days before peak. 2025TNSCR4902....1M
Related files
File Comments Last Modified (UT) Modified By
tns_2025afih_atrep_22544_BlackGEM.ps 2025-12-09 12:35:27 Orapeleng Mogawana
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
22545 2025-12-08 18:41:29 Lesedi / Mookodi 600 N. Erasmus, S. Potter, C. van Gend, H. Worters, S. Chandra, D. Cunnama, M. Hlakola, P. Rabe, R. Julie (all SAAO) Orapeleng Mogawana BlackGEM tns_2025afih_2025-12-08_18-41-29.076_Lesedi_Mookodi_BlackGEM.dat Object The spectrum was taken as part of the SAAO IO rapid follow-up program [1]. The spectrum was obtained with the widest (4") slit width, resulting in a spectral resolution of R ~ 200 at 6000 Angstrom. [1] https://doi.org/10.1117/12.3015250
22542 2025-12-09 02:47:50 Liping Li Liping Li, Zeyi Wang, Qian Zhai, Bo Wang, Jujia Zhang (YNAO); Xiaofeng Wang(THU) LiONS SN Ia 0.019 1 LiONS The spectrum obtained by LJT matches that of a normal SN Ia at a week before peak brightness. The redshift is obtained from the host galaxy in NED. 2025TNSCR4903....1L
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
22543 2025-12-08 12:36:24 Lijiang-2.4m / YFOSC Jujia Zhang LiONS tns_2025afih_2025-12-08_12-36-23.63_Lijiang-2.4m_YFOSC_LiONS.dat Object

Comments

TNS
System

Mon, 12/15/2025 - 18:16

Object coordinates updated

Object coordinates updated according to AT-report 280782 of Group Pan-STARRS
Previous RA, DEC: 02:03:03.912, +04:14:37.22 (30.766301, +4.243672)
Updated RA, DEC: 02:03:03.912, +04:14:37.24 (30.7663010688, +4.24367725701)

TNS
System

Mon, 12/08/2025 - 16:40

Object coordinates updated

Object coordinates updated according to AT-report 278908 of Group WFST
Previous RA, DEC: 02:03:03.902, +04:14:37.14 (30.7662601, +4.2436497)
Updated RA, DEC: 02:03:03.912, +04:14:37.22 (30.766301, +4.243672)

TNS
System

Sat, 12/06/2025 - 07:10

Object coordinates updated

Object coordinates updated according to AT-report 279454 of Group ZTF
Previous RA, DEC: 02:03:03.912, +04:14:37.64 (30.7663, +4.243788)
Updated RA, DEC: 02:03:03.902, +04:14:37.14 (30.7662601, +4.2436497)

TNS
System

Thu, 12/04/2025 - 10:44

Object coordinates updated

Object coordinates updated according to AT-report 279318 of Group GOTO
Previous RA, DEC: 02:03:03.912, +04:14:37.22 (30.766301, +4.243672)
Updated RA, DEC: 02:03:03.912, +04:14:37.64 (30.7663, +4.243788)