RA/DEC (2000)
15:59:37.633 +15:18:37.35
239.906806022 +15.3103751493
Type
SN II
Redshift
0.038
Discovery ReportClassification Report
Related AstroNotes: 2025-219
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-07-07 21:48:47.232
TNS AT
Y
Public
Y
Discovery Mag
18.21
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, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025qpa - 2025-07-17 04:09:45 ESO-NTT / EFOSC2-NTT (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

 ▌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
 ▌P48_ZTF-Cam_g
 ▌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
21558 2025-07-17 04:09:45 ESO-NTT / EFOSC2-NTT 1200 G. Csoernyei G. Csoernyei None tns_2025qpa_2025-07-17_04-09-44.751_ESO-NTT_EFOSC2-NTT_None.asci tns_2025qpa_2025-07-17_04-09-44.751_ESO-NTT_EFOSC2-NTT_None.fits Object Quick-reduction spectrum
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
w-P1 PS2_GPC2 2025-07-20 08:21:05 - 2025-07-20 08:21:05 2460876.84797 - 2460876.84797 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504205 2025-07-20 08:21:05 2460876.84797 18.01 0.01 22 ABMag w-P1 PS2_GPC2 45 Robot
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-07-05 04:38:49 - 2025-07-05 04:38:49 2460861.69362 - 2460861.69362 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503502 2025-07-05 04:38:49 2460861.69362 18.33 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-07-03 21:52:00 - 2025-07-07 21:48:47 2460860.411113 - 2460864.408877 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
501404 2025-07-07 21:48:47 2460864.408877 18.21 0.12 ABMag L-GOTO GOTO-N_GOTO-1 180
501403 2025-07-03 21:52:00 2460860.411113 19.1 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-06-24 03:08:22 - 2025-06-24 03:08:22 2460850.6308102 - 2460850.6308102 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508158 2025-06-24 03:08:22 2460850.6308102 20.79 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-08-11 23:34:18 - 2025-08-11 23:34:18 2460899.4821528 - 2460899.4821528 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508159 2025-08-11 23:34:18 2460899.4821528 18.49 0.05 20.9 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
r-ZTF P48_ZTF-Cam 2025-08-01 06:44:30 - 2025-08-01 06:44:30 2460888.7809028 - 2460888.7809028 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507162 2025-08-01 06:44:30 2460888.7809028 18.2571 0.0724026 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-07-04 06:14:45 - 2025-08-03 05:39:25 2460860.7602431 - 2460890.735706 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507163 2025-08-03 05:39:25 2460890.735706 18.6071 0.105605 ABMag g-ZTF P48_ZTF-Cam
507161 2025-07-04 06:14:45 2460860.7602431 20.0465 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-07-06 08:27:18 - 2025-07-06 08:27:18 2460862.85229 - 2460862.85229 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503503 2025-07-06 08:27:18 2460862.85229 18.405 0.169 19.05 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 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
265497 2025-08-12 07:02:00 BlackGEM_Bot1 G. Ramsay,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 15:59:37.616 +15:18:37.48 2025-08-11 23:34:18.000 18.49 BG-q-BlackGem PSN BGEM J155937.61+151837.4 BlackGEM N
264839 2025-08-03 11:01:32 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 15:59:37.634 +15:18:37.29 2025-08-01 06:44:30.001 18.2571 r-ZTF PSN ZTF25abghcuc ZTF N
263384 2025-07-22 10:50:28 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 15:59:37.633 +15:18:37.35 2025-07-20 08:21:04.608 18.01 w-P1 PSN PS25fgc Pan-STARRS N
263008 2025-07-19 18:36:59 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 15:59:37.625 +15:18:37.43 2025-07-06 08:27:17.856 18.405 orange-ATLAS PSN ATLAS25hcc ATLAS N
261826 2025-07-07 22:04:40 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 15:59:37.630 +15:18:37.11 2025-07-07 21:48:47.232 18.21 L-GOTO Other GOTO25eqg GOTO 2025TNSTR2592....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
21558 2025-07-18 14:57:20 Geza Csornyei G. Csoernyei, M. Mirabile, M. Vioque (ESO), G. Fernandes Goncalves (Federal University of Technology), L. Hauer (University of Vienna), P. M. Lequizamon Pineda (Università degli Studi di Padova), A. Moore (University College Cork), E. Nilson (Lund University), A. Pisapia (INAF-OAS), J. Willingham (Macquarie University) None SN II 0.038 1 Strong host galaxy contamination. The spectrum shows a broad H alpha profile, indicating it to be Type II supernova, about 10 days after explosion. The redshift was taken from SDSS, and was verified by the host galaxy narrow emission lines seen in the spectrum. 2025TNSCR2762....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
21558 2025-07-17 04:09:45 ESO-NTT / EFOSC2-NTT 1200 G. Csoernyei G. Csoernyei None tns_2025qpa_2025-07-17_04-09-44.751_ESO-NTT_EFOSC2-NTT_None.asci tns_2025qpa_2025-07-17_04-09-44.751_ESO-NTT_EFOSC2-NTT_None.fits Object Quick-reduction spectrum

Comments

TNS
System

Tue, 07/22/2025 - 10:50

Object coordinates updated

Object coordinates updated according to AT-report 263384 of Group Pan-STARRS
Previous RA, DEC: 15:59:37.625, +15:18:37.43 (239.90676925, +15.3103980833)
Updated RA, DEC: 15:59:37.633, +15:18:37.35 (239.906806022, +15.3103751493)

TNS
System

Sat, 07/19/2025 - 18:36

Object coordinates updated

Object coordinates updated according to AT-report 263008 of Group ATLAS
Previous RA, DEC: 15:59:37.630, +15:18:37.11 (239.906791, +15.310309)
Updated RA, DEC: 15:59:37.625, +15:18:37.43 (239.90676925, +15.3103980833)