RA/DEC (2000)
21:56:36.368 -10:07:05.89
329.1515317 -10.1183035
Type
SN Ia
Redshift
0.084
Discovery ReportClassification Report
Related AstroNotes: 2025-277
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-08-24 07:50:25.152
TNS AT
Y
Public
Y
Discovery Mag
19.757
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), M. R. Alarcón, J. Licandro, P. Nichita (IAC), 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)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025vhj - 2025-08-31 05:34:52 P60 / SEDM (ZTF)z=
 ▌SN_2025vhj - 2025-08-31 01:47:33 NOT / ALFOSC (GOTO)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

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌LAST_LAST-Cam_Clear
 ▌GOTO-S_GOTO-3_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_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
21930 2025-08-31 05:34:52 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025vhj_2025-08-31_05-34-52.082119_P60_SEDM_ZTF.ascii Object
21931 2025-08-31 01:47:33 NOT / ALFOSC I. Worssam, M. Pursiainen I. Worssam, M. Pursiainen GOTO tns_2025vhj_2025-08-31_01-47-32.908_NOT_ALFOSC_GOTO.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-08-21 02:29:17 - 2025-08-21 02:29:17 2460908.60367 - 2460908.60367 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
512020 2025-08-21 02:29:17 2460908.60367 19.6 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
Clear- LAST_LAST-Cam 2025-08-06 00:14:03 - 2025-08-27 21:13:55 2460893.50976 - 2460915.38467 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
512939 2025-08-27 21:13:55 2460915.38467 19.34 ABMag Clear- LAST_LAST-Cam 400
512938 2025-08-06 00:14:03 2460893.50976 20.34 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2025-08-17 13:11:07 - 2025-08-23 11:29:57 2460905.049386 - 2460910.979127 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
512211 2025-08-23 11:29:57 2460910.979127 19.39 0.1 ABMag L-GOTO GOTO-S_GOTO-3 180
512210 2025-08-17 13:11:07 2460905.049386 20.3 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-08-26 06:29:27 - 2025-08-26 06:29:27 2460913.7704514 - 2460913.7704514 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
512400 2025-08-26 06:29:27 2460913.7704514 19.3301 0.121647 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-08-18 08:48:10 - 2025-08-22 07:03:36 2460905.8667824 - 2460909.7941667 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
512399 2025-08-22 07:03:36 2460909.7941667 19.985 0.19866 ABMag g-ZTF P48_ZTF-Cam
512398 2025-08-18 08:48:10 2460905.8667824 20.484 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-08-24 07:50:25 - 2025-08-24 07:50:25 2460911.82668 - 2460911.82668 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
512021 2025-08-24 07:50:25 2460911.82668 19.757 0.112 20.25 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 110 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
267931 2025-08-28 03:11:04 LAST_Bot1 E. O. Ofek (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al. LAST LAST 21:56:36.241 -10:07:07.33 2025-08-27 21:13:55.488 19.34 Clear- PSN LAST N
267709 2025-08-26 07:11:27 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 21:56:36.368 -10:07:05.89 2025-08-22 07:03:36.002 19.985 g-ZTF PSN ZTF25abkpyds ZTF N
267609 2025-08-25 14:20:27 GOTO_bot G. Ramsay,D. O'Neill,K. Ackley et al. GOTO GOTO 21:56:36.400 -10:07:06.11 2025-08-23 11:29:56.832 19.39 L-GOTO Other GOTO25gim GOTO N
267509 2025-08-24 13:50:17 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 21:56:36.370 -10:07:06.17 2025-08-24 07:50:25.152 19.757 orange-ATLAS PSN ATLAS25kia ATLAS 2025TNSTR3350....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
21931 2025-08-31 08:34:44 Joe Lyman I. Worssam, M. Pursiainen, D. O'Neill, J. Lyman, T. Killestein, K. Ackley, M. Dyer, 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, A. Kumar on behalf of GOTO collaboration GOTO SN Ia 0.084 1 GOTO 2025TNSCR3484....1W
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
21931 2025-08-31 01:47:33 NOT / ALFOSC I. Worssam, M. Pursiainen I. Worssam, M. Pursiainen GOTO tns_2025vhj_2025-08-31_01-47-32.908_NOT_ALFOSC_GOTO.dat Object
21930 2025-08-31 06:26:23 ZTF_Bot1 C. Fremling, D. Neill, Y. Sharma on behalf of the SEDM Team (Caltech) and the Zwicky Transient Facility (ZTF) based on SNIascore ZTF SN Ia 0.0709 1 ZTF 2025TNSCR3487....1F
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
21930 2025-08-31 05:34:52 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025vhj_2025-08-31_05-34-52.082119_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Thu, 08/28/2025 - 11:48

AT Report/s were associated with object

LAST AT report/s 267931 for 2025vrb were associated with object AT2025vhj.
Object 2025vrb was removed from the system.

TNS
System

Tue, 08/26/2025 - 07:11

Object coordinates updated

Object coordinates updated according to AT-report 267709 of Group ZTF
Previous RA, DEC: 21:56:36.370, -10:07:06.17 (329.151543333, -10.1183816667)
Updated RA, DEC: 21:56:36.368, -10:07:05.89 (329.1515317, -10.1183035)