RA/DEC (2000)
02:31:41.576 +02:47:59.35
37.9232337649 +2.799818356
Type
SN IIP
Redshift
0.028
Related AstroNotes: 2025-246
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-07-03 10:01:17.184
TNS AT
Y
Public
Y
Discovery Mag
18.272
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)

Spectra

 SN_2025qgz - 2025-07-31 04:06:23 NOT / ALFOSC (BlackGEM)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

 WFST_WFST-WFC_g
 PS2_GPC2_w
 ATLAS-CHL_ATLAS-04_orange
 GOTO-N_GOTO-1_L
 BG3_BlackGEM-Cam3_BG-q
 BG2_BlackGEM-Cam2_BG-q
 P48_ZTF-Cam_r
 ATLAS-HKO_ATLAS-02_orange
   
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
21714 2025-07-31 04:06:23 NOT / ALFOSC 1400 Marco Antonio Gomez Muñoz Gerard Garcia Moreno BlackGEM tns_2025qgz_2025-07-31_04-06-23_NOT_ALFOSC_BlackGEM.txt Object Reduced using pypeit
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-WFST WFST_WFST-WFC 2025-08-10 19:40:48 - 2025-08-10 19:40:48 2460898.32 - 2460898.32 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508168 2025-08-10 19:40:48 2460898.32 19.49 0.06 ABMag g-WFST WFST_WFST-WFC 90
w-P1 PS2_GPC2 2025-08-18 13:52:59 - 2025-08-18 13:52:59 2460906.07846 - 2460906.07846 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
512334 2025-08-18 13:52:59 2460906.07846 18.91 0.03 22 ABMag w-P1 PS2_GPC2 45 Robot
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-07-03 10:01:17 - 2025-07-03 10:01:17 2460859.91756 - 2460859.91756 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
500819 2025-07-03 10:01:17 2460859.91756 18.272 0.139 18.85 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
L-GOTO GOTO-N_GOTO-1 2025-02-12 21:02:25 - 2025-07-09 04:52:26 2460719.376683 - 2460865.703079 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
501520 2025-07-09 04:52:26 2460865.703079 18.51 0.13 ABMag L-GOTO GOTO-N_GOTO-1 180
501519 2025-02-12 21:02:25 2460719.376683 18.5 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-07-02 09:10:03 - 2025-07-02 09:10:03 2460858.8819792 - 2460858.8819792 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504785 2025-07-02 09:10:03 2460858.8819792 20.17 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-07-04 08:34:24 - 2025-07-04 08:34:24 2460860.8572222 - 2460860.8572222 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504786 2025-07-04 08:34:24 2460860.8572222 18.98 0.09 20.37 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
r-ZTF P48_ZTF-Cam 2025-08-16 08:37:17 - 2025-08-16 08:37:17 2460903.8592245 - 2460903.8592245 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
509620 2025-08-16 08:37:17 2460903.8592245 18.6801 0.0853834 19.8523 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-02-18 06:06:42 - 2025-02-18 06:06:42 2460724.75465 - 2460724.75465 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
500818 2025-02-18 06:06:42 2460724.75465 19.29 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [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
267671 2025-08-25 22:39:33 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 02:31:41.576 +02:47:59.35 2025-08-18 13:52:58.944 18.91 w-P1 PSN PS25hay Pan-STARRS N
266209 2025-08-17 12:42:44 ALeRCE S. Jurado,F.E. Bauer,F. Forster et al. ALeRCE ZTF 02:31:41.556 +02:47:59.20 2025-08-16 08:37:16.997 18.6801 r-ZTF PSN SDSS J023141.54+024755.9 ZTF25abdbukg ZTF SN candidate classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF25abdbukg N
265502 2025-08-12 08:08:31 WFST_SN Zelin Xu,Dezheng Meng,Ji-an Jiang et al. WFST WFST 02:31:41.580 +02:47:59.24 2025-08-10 19:40:48.000 19.49 g-WFST PSN WFST0526aepk WFST N
263661 2025-07-25 08:51:02 BlackGEM_Bot1 H. Tranin,F. Stoppa,D. Pieterse et al. BlackGEM BlackGEM 02:31:41.619 +02:47:58.91 2025-07-04 08:34:24.000 18.98 BG-q-BlackGem PSN BGEM J023141.61+024758.9 BlackGEM N
Related files
File Comments Last Modified (UT) Modified By
tns_2025qgz_atrep_263661_BlackGEM.pdf Finding Chart 2025-07-25 08:51:04 BlackGEM_Bot1
261885 2025-07-09 09:26:31 GOTO_bot G. Ramsay,D. O'Neill,K. Ackley et al. GOTO GOTO 02:31:41.565 +02:47:59.60 2025-07-09 04:52:26.112 18.51 L-GOTO Other GOTO25erw GOTO N
261512 2025-07-04 13:27:36 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 02:31:41.543 +02:47:59.68 2025-07-03 10:01:17.184 18.272 orange-ATLAS PSN ATLAS25gze ATLAS 2025TNSTR2553....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
21714 2025-08-08 06:38:51 Hugo Tranin Hugo Tranin BlackGEM SN IIP 0.028 1 BlackGEM, CET-3PO Classified with SNID SAGE as SN IIP, with low confidence on the subtype. RLAP=11.6 Redshift: 0.0279 ± 0.0001 2025TNSCR3115....1T
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
21714 2025-07-31 04:06:23 NOT / ALFOSC 1400 Marco Antonio Gomez Muñoz Gerard Garcia Moreno BlackGEM tns_2025qgz_2025-07-31_04-06-23_NOT_ALFOSC_BlackGEM.txt Object Reduced using pypeit

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 267671 of Group Pan-STARRS
Previous RA, DEC: 02:31:41.619, +02:47:58.91 (37.923412, +2.799697)
Updated RA, DEC: 02:31:41.576, +02:47:59.35 (37.9232337649, +2.799818356)

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 263661 of Group BlackGEM
Previous RA, DEC: 02:31:41.543, +02:47:59.68 (37.9230966667, +2.79991)
Updated RA, DEC: 02:31:41.619, +02:47:58.91 (37.923412, +2.799697)