RA/DEC (2000)
03:47:18.120 -08:26:59.89
56.8254979184 -8.44996810832
Type
SN II
Redshift
0.03339
Discovery ReportClassification Report
Reporting Group
BlackGEM
Discovering Data Source
BlackGEM
Discovery Date
2025-08-12 07:57:57.000
TNS AT
Y
Public
Y
Discovery Mag
18.83
Filter
BG-q-BlackGem
Reporter/s
F. Stoppa, H. Tranin, D. Pieterse, G. Ramsay, S. Faris, P. Groot, P. Vreeswijk, N. Blagorodnova, J. van Roestel, H. Wichern, S. Scaringi
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025tqu - 2025-09-06 09:33:44 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

 ▌GOTO-S_GOTO-3_L
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌P48_ZTF-Cam_r
 ▌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
21991 2025-09-06 09:33:44 P60 / SEDM 2700 SEDmRobot ZTF tns_2025tqu_2025-09-06_09-33-44.103078_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-07-12 18:49:13 - 2025-08-12 17:59:18 2460869.284176 - 2460900.249508 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508285 2025-08-12 17:59:18 2460900.249508 18.64 0.1 ABMag L-GOTO GOTO-S_GOTO-3 180
508284 2025-07-12 18:49:13 2460869.284176 19 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2025-08-12 07:57:57 - 2025-08-12 07:57:57 2460899.8319097 - 2460899.8319097 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508262 2025-08-12 07:57:57 2460899.8319097 18.83 0.11 20 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-07-22 09:20:38 - 2025-07-22 09:20:38 2460878.8893287 - 2460878.8893287 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508261 2025-07-22 09:20:38 2460878.8893287 20.47 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2025-08-13 10:59:21 - 2025-08-13 10:59:21 2460900.9578819 - 2460900.9578819 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508482 2025-08-13 10:59:21 2460900.9578819 18.4625 0.0822255 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-08-13 11:33:19 - 2025-08-13 11:33:19 2460900.9814699 - 2460900.9814699 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508483 2025-08-13 11:33:19 2460900.9814699 18.987 0.158643 ABMag g-ZTF P48_ZTF-Cam
i-P1 PS1_GPC1 2025-09-08 13:42:00 - 2025-09-08 13:42:00 2460927.07083 - 2460927.07083 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
546464 2025-09-08 13:42:00 2460927.07083 19 0.04 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
285179 2025-12-31 15:40:20 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 03:47:18.120 -08:26:59.89 2025-09-08 13:41:59.712 19 i-P1 PSN PS25lzm Pan-STARRS N
265669 2025-08-13 11:41:44 BTSbot_bot Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF ZTF ZTF 03:47:18.119 -08:26:59.87 2025-08-13 10:59:20.996 18.4625 r-ZTF PSN ZTF25abikqrb ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
265572 2025-08-12 18:43:52 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 03:47:18.148 -08:26:59.58 2025-08-12 17:59:17.664 18.64 L-GOTO Other GOTO25fta GOTO N
265561 2025-08-12 12:17:03 BlackGEM_Bot1 F. Stoppa, H. Tranin, D. Pieterse et al. BlackGEM BlackGEM 03:47:18.115 -08:26:59.85 2025-08-12 07:57:57.000 18.83 BG-q-BlackGem 1 PSN BGEM J034718.11-082659.8 BlackGEM 2025TNSTR3157....1S N
Related files
File Comments Last Modified (UT) Modified By
tns_2025tqu_atrep_265561_BlackGEM.pdf Finding Chart 2025-08-12 12:17:06 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
21991 2025-09-08 17:50:36 ZTF_Bot1 J. Sollerman, A. Mehla, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN II 0.03339 1 ZTF 2025TNSCR3620....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
21991 2025-09-06 09:33:44 P60 / SEDM 2700 SEDmRobot ZTF tns_2025tqu_2025-09-06_09-33-44.103078_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Wed, 12/31/2025 - 15:40

Object coordinates updated

Object coordinates updated according to AT-report 285179 of Group Pan-STARRS
Previous RA, DEC: 03:47:18.115, -08:26:59.85 (56.825479, -8.449958)
Updated RA, DEC: 03:47:18.120, -08:26:59.89 (56.8254979184, -8.44996810832)