RA/DEC (2000)
04:07:34.399 -02:58:37.78
61.8933305 -2.9771622
Type
SN Ia
Redshift
0.0834
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-12-14 12:10:41.952
TNS AT
Y
Public
Y
Discovery Mag
19.29
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, R. Starling, B. Gompertz, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025agui - 2025-12-18 05:25:28 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

 ▌LAST_LAST-Cam_Clear
 ▌GOTO-S_GOTO-3_L
 ▌ATLAS-STH_ATLAS-03_cyan
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_g
   
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
22643 2025-12-18 05:25:28 P60 / SEDM 2700 SEDmRobot ZTF tns_2025agui_2025-12-18_05-25-27.959937_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- LAST_LAST-Cam 2024-11-28 21:34:57 - 2025-12-23 18:39:05 2460643.39927 - 2461033.27714 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
542266 2025-12-23 18:39:05 2461033.27714 18.88 ABMag Clear- LAST_LAST-Cam 400
542265 2024-11-28 21:34:57 2460643.39927 20.94 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2025-12-14 12:10:42 - 2025-12-14 12:10:42 2461024.007434 - 2461024.007434 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
538667 2025-12-14 12:10:42 2461024.007434 19.29 0.08 ABMag L-GOTO GOTO-S_GOTO-3 180
cyan-ATLAS ATLAS-STH_ATLAS-03 2025-12-14 22:23:34 - 2025-12-17 20:50:36 2461024.43303 - 2461027.36847 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
541013 2025-12-17 20:50:36 2461027.36847 18.731 0.114 19.47 ABMag cyan-ATLAS ATLAS-STH_ATLAS-03 30 Robot
541012 2025-12-14 22:23:34 2461024.43303 19.77 ABMag cyan-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-12-10 22:55:06 - 2025-12-10 22:55:06 2461020.454935 - 2461020.454935 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
538666 2025-12-10 22:55:06 2461020.454935 20.1 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
g-ZTF P48_ZTF-Cam 2025-12-11 06:34:26 - 2025-12-15 06:06:22 2461020.773912 - 2461024.7544213 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
538990 2025-12-15 06:06:22 2461024.7544213 19.3154 0.0567384 ABMag g-ZTF P48_ZTF-Cam
538989 2025-12-12 05:25:59 2461021.7263773 20.082 0.204375 ABMag g-ZTF P48_ZTF-Cam
538988 2025-12-11 06:34:26 2461020.773912 20.295 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
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
282136 2025-12-24 07:04:31 LAST_Bot1 E. O. Ofek (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al. LAST LAST 04:07:34.393 -02:58:37.98 2025-12-23 18:39:04.896 18.88 Clear- PSN LAST N
281588 2025-12-20 11:59:21 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 04:07:34.411 -02:58:37.67 2025-12-17 20:50:35.808 18.731 cyan-ATLAS PSN ATLAS25pzc ATLAS N
280665 2025-12-15 07:21:29 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 04:07:34.399 -02:58:37.78 2025-12-12 05:25:58.998 20.082 g-ZTF PSN ZTF25acgxfng ZTF N
280486 2025-12-14 12:33:07 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 04:07:34.392 -02:58:37.87 2025-12-14 12:10:41.952 19.29 L-GOTO Other GOTO25loh GOTO 2025TNSTR4965....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
22642 2025-12-19 21:46:15 ZTF_Bot1 J. Sollerman, J. Castaneda Jaimes, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN Ia 0.0834 1 ZTF 2025TNSCR5077....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
22643 2025-12-18 05:25:28 P60 / SEDM 2700 SEDmRobot ZTF tns_2025agui_2025-12-18_05-25-27.959937_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Mon, 12/15/2025 - 07:21

Object coordinates updated

Object coordinates updated according to AT-report 280665 of Group ZTF
Previous RA, DEC: 04:07:34.392, -02:58:37.87 (61.8933, -2.977185)
Updated RA, DEC: 04:07:34.399, -02:58:37.78 (61.8933305, -2.9771622)