RA/DEC (2000)
04:48:00.386 -16:39:41.91
72.0016068915 -16.6616427541
Type
SN II
Redshift
0.031
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-12-07 16:09:44.352
TNS AT
Y
Public
Y
Discovery Mag
19.58
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_2025agep - 2025-12-14 01:18:01 VLT-UT1 / FORS2 (adH0cc)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-3_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌GOTO-N_GOTO-1_L
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌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
22595 2025-12-14 01:18:01 VLT-UT1 / FORS2 900 service G. Csoernyei adH0cc tns_2025agep_2025-12-14_01-18-01_VLT-UT1_FORS2_adH0cc.asci tns_2025agep_2025-12-14_01-18-01_VLT-UT1_FORS2_adH0cc.fits Object Quick-reduction spectrum
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-12-07 16:09:44 - 2025-12-07 16:09:44 2461017.173432 - 2461017.173432 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537147 2025-12-07 16:09:44 2461017.173432 19.58 0.22 ABMag L-GOTO GOTO-S_GOTO-3 180
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-12-11 05:08:48 - 2025-12-11 05:08:48 2461020.71444 - 2461020.71444 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
538711 2025-12-11 05:08:48 2461020.71444 19.05 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-12-06 00:42:25 - 2025-12-06 00:42:25 2461015.529458 - 2461015.529458 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537146 2025-12-06 00:42:25 2461015.529458 18.3 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2025-11-11 05:49:55 - 2025-11-11 05:49:55 2460990.7429977 - 2460990.7429977 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
585611 2025-11-11 05:49:55 2460990.7429977 19.77 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-12-09 05:03:14 - 2025-12-09 05:03:14 2461018.7105787 - 2461018.7105787 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
585612 2025-12-09 05:03:14 2461018.7105787 19.27 0.11 19.94 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
r-ZTF P48_ZTF-Cam 2025-12-07 06:28:20 - 2025-12-11 06:01:14 2461016.7696759 - 2461020.7508565 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537418 2025-12-11 06:01:14 2461020.7508565 19.2993 0.116174 ABMag r-ZTF P48_ZTF-Cam
539442 2025-12-11 06:01:14 2461020.7508565 19.2993 0.116174 20.2076 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
539441 2025-12-07 06:28:20 2461016.7696759 18.876 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
g-ZTF P48_ZTF-Cam 2025-12-07 08:09:47 - 2025-12-11 06:39:13 2461016.8401273 - 2461020.7772338 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537419 2025-12-11 06:39:13 2461020.7772338 19.2483 0.130146 ABMag g-ZTF P48_ZTF-Cam
537417 2025-12-07 08:09:47 2461016.8401273 19.3006 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-12-14 09:44:34 - 2025-12-14 09:44:34 2461023.90595 - 2461023.90595 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
538712 2025-12-14 09:44:34 2461023.90595 18.955 0.138 19.46 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
i-P1 PS1_GPC1 2025-12-08 09:19:16 - 2025-12-08 09:19:16 2461017.88838 - 2461017.88838 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
538961 2025-12-08 09:19:16 2461017.88838 19.81 0.14 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
305370 2026-05-27 13:42:11 BlackGEM_Bot1 H. Tranin, F. Stoppa, D. Pieterse et al. BlackGEM BlackGEM 04:48:00.387 -16:39:42.00 2025-12-09 05:03:14.000 19.27 BG-q-BlackGem PSN BGEM J044800.39-163942.0 BlackGEM N
280862 2025-12-16 19:15:29 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 04:48:00.380 -16:39:41.98 2025-12-11 06:01:14.002 19.2993 r-ZTF PSN ZTF25acgklik ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25acgklik N
280654 2025-12-15 00:21:53 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 04:48:00.386 -16:39:41.91 2025-12-08 09:19:16.032 19.81 i-P1 PSN PS25ipw Pan-STARRS N
280508 2025-12-14 13:04:52 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 04:48:00.385 -16:39:41.66 2025-12-14 09:44:34.080 18.955 orange-ATLAS PSN ATLAS25psh ATLAS N
279974 2025-12-11 08:24:24 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 04:48:00.373 -16:39:41.58 2025-12-11 06:01:14.001 19.2993 r-ZTF PSN ZTF25acgklik ZTF N
279847 2025-12-09 17:40:31 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 04:48:00.380 -16:39:42.73 2025-12-07 16:09:44.352 19.58 L-GOTO Other GOTO25ljd GOTO 2025TNSTR4892....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
22594 2025-12-15 23:23:29 Geza Csornyei G. Csoernyei, B. Leibundgut, J. Spyromilio, S. Blondin (ESO), S. Taubenberger (TUM / MPA), W. Hillebrandt (MPA) adH0cc SN II 0.031 1 adH0cc The spectrum shows P Cygni features of H and He, indicative of a young Type II supernova. Redshift was measured based on narrow emission lines. 2025TNSCR4993....1C
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
22595 2025-12-14 01:18:01 VLT-UT1 / FORS2 900 service G. Csoernyei adH0cc tns_2025agep_2025-12-14_01-18-01_VLT-UT1_FORS2_adH0cc.asci tns_2025agep_2025-12-14_01-18-01_VLT-UT1_FORS2_adH0cc.fits Object Quick-reduction spectrum

Comments

TNS
System

Mon, 12/15/2025 - 00:21

Object coordinates updated

Object coordinates updated according to AT-report 280654 of Group Pan-STARRS
Previous RA, DEC: 04:48:00.373, -16:39:41.58 (72.0015524, -16.6615492)
Updated RA, DEC: 04:48:00.386, -16:39:41.91 (72.0016068915, -16.6616427541)

TNS
System

Thu, 12/11/2025 - 08:24

Object coordinates updated

Object coordinates updated according to AT-report 279974 of Group ZTF
Previous RA, DEC: 04:48:00.380, -16:39:42.73 (72.001583, -16.66187)
Updated RA, DEC: 04:48:00.373, -16:39:41.58 (72.0015524, -16.6615492)