RA/DEC (2000)
22:47:20.005 -65:03:31.11
341.833354 -65.058642
Type
SN Ia-91bg-like
Redshift
0.0108
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-08-29 04:46:18.912
TNS AT
Y
Public
Y
Discovery Mag
16.7
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_2025wmj - 2025-09-01 12:00:00 ANU-2.3m / WiFeS (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

 ▌GOTO-S_GOTO-4_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌BG3_BlackGEM-Cam3_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
21952 2025-09-01 12:00:00 ANU-2.3m / WiFeS 1200 Robotic K. Auchettl None tns_2025wmj_2025-09-01.5_ANU-2.3m_WiFeS_None.dat tns_2025wmj_2025-09-01.5_ANU-2.3m_WiFeS_None.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-08-23 12:47:09 - 2025-09-01 18:36:59 2460911.03274 - 2460920.275677 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
515179 2025-09-01 18:36:59 2460920.275677 16.33 0.01 ABMag L-GOTO GOTO-S_GOTO-4 135
515178 2025-08-23 12:47:09 2460911.03274 20 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-08-23 07:36:44 - 2025-08-29 04:46:19 2460910.81718 - 2460916.69883 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
514548 2025-08-29 04:46:19 2460916.69883 16.7 0.035 19.24 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
514547 2025-08-23 07:36:44 2460910.81718 19.79 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 110 Robot [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-08-06 02:53:42 - 2025-09-10 01:27:54 2460893.620625 - 2460928.5610417 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
517442 2025-09-10 01:27:54 2460928.5610417 16.52 0.03 19.98 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic
517441 2025-08-06 02:53:42 2460893.620625 19.94 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic [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
270196 2025-09-15 14:49:46 BlackGEM_Bot1 H. Tranin, F. Stoppa, D. Pieterse et al. BlackGEM BlackGEM 22:47:20.005 -65:03:31.11 2025-09-10 01:27:54.000 16.52 BG-q-BlackGem PSN BGEM J224720.01-650331.1 BlackGEM N
269102 2025-09-02 14:48:04 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 22:47:20.017 -65:03:31.17 2025-09-01 18:36:58.752 16.33 L-GOTO Other GOTO25gsc GOTO N
268769 2025-08-31 14:35:49 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 22:47:20.035 -65:03:31.15 2025-08-29 04:46:18.912 16.7 orange-ATLAS PSN ATLAS25kua ATLAS 2025TNSTR3471....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
21952 2025-09-02 11:49:31 Chris Lidman C. Lidman (ANU), B. P. Schmidt (ANU), K. Auchettl (University of Melbourne/UCSC), Songyang He (ANU), Andrew Anyu Peng (ANU), Tashi Masterman (ANU), Jinhui Wu (ANU), Nick Herald (ANU), Trevor Mendal (ANU), and Rob Sharp (ANU) None SN Ia-91bg-like 0.0108 1 Classified with Superfit 2025TNSCR3530....1L
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
21952 2025-09-01 12:00:00 ANU-2.3m / WiFeS 1200 Robotic K. Auchettl None tns_2025wmj_2025-09-01.5_ANU-2.3m_WiFeS_None.dat tns_2025wmj_2025-09-01.5_ANU-2.3m_WiFeS_None.fits Object

Comments

TNS
System

Mon, 09/15/2025 - 14:49

Object coordinates updated

Object coordinates updated according to AT-report 270196 of Group BlackGEM
Previous RA, DEC: 22:47:20.035, -65:03:31.15 (341.83348, -65.058654)
Updated RA, DEC: 22:47:20.005, -65:03:31.11 (341.833354, -65.058642)