RA/DEC (2000)
05:51:15.025 -42:59:08.73
87.812605 -42.985758
Type
SN Ia
Redshift
0.03404
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-09-02 08:15:06.912
TNS AT
Y
Public
Y
Discovery Mag
17.889
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_2025wsi - 2025-09-13 19:12:00 ANU-2.3m / WiFeS (DEBASS)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
   
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
22035 2025-09-13 19:12:00 ANU-2.3m / WiFeS 1200 Robotic K. Auchettl DEBASS tns_2025wsi_2025-09-13.8_ANU-2.3m_WiFeS_DEBASS.dat tns_2025wsi_2025-09-13.8_ANU-2.3m_WiFeS_DEBASS.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-08-17 18:07:17 - 2025-09-03 16:43:43 2460905.255055 - 2460922.197017 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
515413 2025-09-03 16:43:43 2460922.197017 17.44 0.03 ABMag L-GOTO GOTO-S_GOTO-4 360
515412 2025-08-17 18:07:17 2460905.255055 19.8 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-09-01 10:07:53 - 2025-09-02 08:15:07 2460919.92214 - 2460920.84383 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
515199 2025-09-02 08:15:07 2460920.84383 17.889 0.077 18.97 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
515198 2025-09-01 10:07:53 2460919.92214 16.09 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 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
269218 2025-09-03 19:15:46 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 05:51:15.017 -42:59:08.71 2025-09-03 16:43:42.528 17.44 L-GOTO Other GOTO25gtr GOTO This transient was discovered with the assistance of the GOTO Kilonova Seekers Citizen Scientists on Zooniverse. The candidate was flagged by volunteers: Virgilio Gonano, Cledison Marcos da Silva, M.T. Mazzucato, Henryk Krawczyk, Jose Alberto da Silva Campos N
269115 2025-09-02 16:02:39 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 05:51:15.025 -42:59:08.73 2025-09-02 08:15:06.912 17.889 orange-ATLAS PSN ATLAS25kxy ATLAS 2025TNSTR3514....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
22035 2025-09-16 22:41:58 Chris Lidman C. Lidman (ANU), K. Auchettl (University of Melbourne/UCSC), D. Cao (ANU), B. Martin (ANU), L. Rauf (ANU), B. P. Schmidt (ANU), and B. E. Tucker (ANU) DEBASS SN Ia 0.03404 1 DEBASS Classified with Superfit 2025TNSCR3729....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
22035 2025-09-13 19:12:00 ANU-2.3m / WiFeS 1200 Robotic K. Auchettl DEBASS tns_2025wsi_2025-09-13.8_ANU-2.3m_WiFeS_DEBASS.dat tns_2025wsi_2025-09-13.8_ANU-2.3m_WiFeS_DEBASS.fits Object

Comments