RA/DEC (2000)
22:50:36.887 -34:22:36.19
342.653696 -34.376719
Type
SN Ia-91T-like
Redshift
0.03
Discovery ReportClassification Report
Related AstroNotes: DRAFT-2272, 2025-260
Reporting Group
BlackGEM
Discovering Data Source
BlackGEM
Discovery Date
2025-08-12 03:03:27.000
TNS AT
Y
Public
Y
Discovery Mag
17.82
Filter
BG-q-BlackGem
Reporter/s
J. A. Paice, 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_2025tqb - 2025-08-17 09:17:49 ESO-NTT / EFOSC2-NTT (ePESSTO+)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-4_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌ATLAS-STH_ATLAS-03_orange
 ▌BG3_BlackGEM-Cam3_BG-q
 ▌BG2_BlackGEM-Cam2_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
21806 2025-08-17 09:17:49 ESO-NTT / EFOSC2-NTT 300 R. Sanfeliu, H.-Y. Miao, C. Gutierrez C. Gutierrez ePESSTO+ tns_2025tqb_2025-08-17_09-17-49_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025tqb_2025-08-17_09-17-49_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-07-18 15:06:41 - 2025-08-17 13:38:05 2460875.129637 - 2460905.068113 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
509759 2025-08-17 13:38:05 2460905.068113 16.25 0.01 ABMag L-GOTO GOTO-S_GOTO-4 180
509758 2025-07-18 15:06:41 2460875.129637 19.8 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-08-14 07:19:44 - 2025-08-14 07:19:44 2460901.80537 - 2460901.80537 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508656 2025-08-14 07:19:44 2460901.80537 17.011 0.021 19.71 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 110 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2025-08-07 22:08:07 - 2025-08-07 22:08:07 2460895.4223 - 2460895.4223 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508655 2025-08-07 22:08:07 2460895.4223 16.9 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-08-08 02:59:20 - 2025-08-08 02:59:20 2460895.624537 - 2460895.624537 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508214 2025-08-08 02:59:20 2460895.624537 18.84 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-08-12 03:03:27 - 2025-08-12 03:03:27 2460899.6273958 - 2460899.6273958 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508215 2025-08-12 03:03:27 2460899.6273958 17.82 0.07 19.17 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
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
266286 2025-08-17 17:41:31 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 22:50:36.895 -34:22:36.12 2025-08-17 13:38:04.704 16.25 L-GOTO Other GOTO25fwl GOTO N
265756 2025-08-14 09:59:43 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 22:50:36.903 -34:22:36.01 2025-08-14 07:19:43.968 17.011 orange-ATLAS PSN ATLAS25jjs ATLAS N
265538 2025-08-12 09:24:03 BlackGEM_Bot1 J. A. Paice,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 22:50:36.887 -34:22:36.19 2025-08-12 03:03:27.000 17.82 BG-q-BlackGem 1 PSN BGEM J225036.88-342236.1 BlackGEM 2025TNSTR3158....1P N
Related files
File Comments Last Modified (UT) Modified By
tns_2025tqb_atrep_265538_BlackGEM.pdf Finding Chart 2025-08-12 09:24:05 BlackGEM_Bot1
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21806 2025-08-17 19:06:35 ePESSTOplus_Bot1 R. Sanfeliu, H.-Y. Miao, C. Gutierrez, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia-91T-like 0.03 1 ePESSTO+ 2025TNSCR3249....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
21806 2025-08-17 09:17:49 ESO-NTT / EFOSC2-NTT 300 R. Sanfeliu, H.-Y. Miao, C. Gutierrez C. Gutierrez ePESSTO+ tns_2025tqb_2025-08-17_09-17-49_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025tqb_2025-08-17_09-17-49_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments