RA/DEC (2000)
04:12:56.396 -54:11:46.41
63.234983 -54.196225
Type
SLSN-II
Redshift
0.04
Discovery ReportClassification Report
Reporting Group
BlackGEM
Discovering Data Source
BlackGEM
Discovery Date
2025-11-13 04:20:34.000
TNS AT
Y
Public
Y
Discovery Mag
19.1
Filter
BG-q-BlackGem
Reporter/s
H. Tranin, F. Stoppa, D. Pieterse, G. Ramsay, S. Faris, P. Groot, P. Vreeswijk, N. Blagorodnova, J. van Roestel, H. Wichern, S. Scaringi
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025adhs - 2025-11-14 00:00:00 SOAR / Goodman (None)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

 ▌BG3_BlackGEM-Cam3_BG-q
 ▌ML1_MeerLICHT-Cam_BG-q
   
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
23090 2025-11-14 00:00:00 SOAR / Goodman Hemanth Bommireddy, Regis Cartier None tns_2025adhs_2025-11-14_SOAR_Goodman_None.txt tns_2025adhs_2025-11-14_SOAR_Goodman_None.fits Object Spectrum appears dominated by host galaxy (nuclear) features.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-11-13 04:20:34 - 2025-11-13 04:20:34 2460992.6809491 - 2460992.6809491 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
530898 2025-11-13 04:20:34 2460992.6809491 19.1 0.13 21.04 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic
BG-q-BlackGem ML1_MeerLICHT-Cam 2019-09-17 02:09:36 - 2019-09-17 02:09:36 2458743.59 - 2458743.59 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
530897 2019-09-17 02:09:36 2458743.59 20 ABMag BG-q-BlackGem ML1_MeerLICHT-Cam 60 robotic [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
276670 2025-11-13 18:15:02 BlackGEM_Bot1 H. Tranin, F. Stoppa, D. Pieterse et al. BlackGEM BlackGEM 04:12:56.396 -54:11:46.41 2025-11-13 04:20:34.000 19.1 BG-q-BlackGem PSN BGEM J041256.40-541146.4 BlackGEM 2025TNSTR4552....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23089 2026-02-25 22:19:23 Hemanth Bommireddy Hemanth Bommireddy None SLSN-II 0.04 1 Spectrum classified with NGSF. Best fit: SLSN-IIn (PTF10jwd) template, z ≈ 0.127, χ²/dof = 8.65. Alternative matches: Ibn (2006jc), IIn (1999el). 2026TNSCR.829....1B
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
23090 2025-11-14 00:00:00 SOAR / Goodman Hemanth Bommireddy, Regis Cartier None tns_2025adhs_2025-11-14_SOAR_Goodman_None.txt tns_2025adhs_2025-11-14_SOAR_Goodman_None.fits Object Spectrum appears dominated by host galaxy (nuclear) features.

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