RA/DEC (2000)
23:33:58.172 -45:12:13.38
353.492381667 -45.2037166667
Type
SN II
Redshift
0.01022
Discovery ReportClassification Report
Related AstroNotes: 2026-97
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-04-03 09:22:35.616
TNS AT
Y
Public
Y
Discovery Mag
16.853
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland (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, P. J. Broda, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (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_2026idu - 2026-04-16 19:12:00 ANU-2.3m / WiFeS (Supernova Alliance)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
 ▌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
23487 2026-04-16 19:12:00 ANU-2.3m / WiFeS 750 Robotic C. Lidman Supernova Alliance tns_2026idu_2026-04-16.8_ANU-2.3m_WiFeS_Supernova_Alliance.dat tns_2026idu_2026-04-16.8_ANU-2.3m_WiFeS_Supernova_Alliance.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-12-18 11:01:44 - 2026-05-05 19:31:26 2461027.959541 - 2461166.313499 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579699 2026-05-05 19:31:26 2461166.313499 16.39 0.01 ABMag L-GOTO GOTO-S_GOTO-4 180
579698 2025-12-18 11:01:44 2461027.959541 20.1 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-04-03 09:22:36 - 2026-04-03 09:22:36 2461133.89069 - 2461133.89069 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
571965 2026-04-03 09:22:36 2461133.89069 16.853 0.097 18.2 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-12-26 05:16:42 - 2025-12-26 05:16:42 2461035.71993 - 2461035.71993 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
571964 2025-12-26 05:16:42 2461035.71993 18.72 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
302393 2026-05-05 20:05:18 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 23:33:58.212 -45:12:13.23 2026-05-05 19:31:26.400 16.39 L-GOTO Other GOTO26efa GOTO N
298339 2026-04-03 13:18:01 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 23:33:58.172 -45:12:13.38 2026-04-03 09:22:35.616 16.853 orange-ATLAS PSN ATLAS26drr ATLAS 2026TNSTR1407....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
23485 2026-04-17 11:04:25 Chris Lidman C. Lidman (ANU), B. P. Schmidt (ANU), K. Auchettl (University of Melbourne/UCSC), B. Martin (ANU), A. Moller (Swinburne), L. Rauf (ANU), and B. E. Tucker (ANU) Supernova Alliance SN II 0.01022 1 Supernova Alliance Classified with Superfit 2026TNSCR1684....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
23487 2026-04-16 19:12:00 ANU-2.3m / WiFeS 750 Robotic C. Lidman Supernova Alliance tns_2026idu_2026-04-16.8_ANU-2.3m_WiFeS_Supernova_Alliance.dat tns_2026idu_2026-04-16.8_ANU-2.3m_WiFeS_Supernova_Alliance.fits Object

Comments