RA/DEC (2000)
17:34:24.707 -63:54:15.27
263.602946364 -63.9042418182
Type
SN IIP
Redshift
0.0155
Discovery ReportClassification Report
Related AstroNotes: 2026-64
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-03-07 22:44:11.040
TNS AT
Y
Public
Y
Discovery Mag
18.048
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_2026fdt - 2026-03-24 18:42:39 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-STH_ATLAS-03_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
23415 2026-03-24 18:42:39 ANU-2.3m / WiFeS Brian Schmidt Supernova Alliance tns_2026fdt_2026-03-24_18-42-39_ANU-2.3m_WiFeS_Supernova_Alliance.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-10-23 09:40:55 - 2026-03-10 18:19:02 2460971.903412 - 2461110.263225 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
569017 2026-03-10 18:19:02 2461110.263225 17.05 0.02 ABMag L-GOTO GOTO-S_GOTO-4 180
569016 2025-10-23 09:40:55 2460971.903412 19.2 ABMag L-GOTO GOTO-S_GOTO-4 90 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-03-07 08:13:49 - 2026-03-07 08:13:49 2461106.84293 - 2461106.84293 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
563612 2026-03-07 08:13:49 2461106.84293 18.44 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2026-03-07 22:44:11 - 2026-03-07 22:44:11 2461107.44735 - 2461107.44735 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
563613 2026-03-07 22:44:11 2461107.44735 18.048 0.173 18.49 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 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
296867 2026-03-21 12:04:15 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 17:34:24.713 -63:54:15.25 2026-03-10 18:19:02.208 17.05 L-GOTO Other GOTO26cer GOTO N
293985 2026-03-09 13:52:04 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 17:34:24.707 -63:54:15.27 2026-03-07 22:44:11.040 18.048 orange-ATLAS PSN ATLAS26cru ATLAS 2026TNSTR.979....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
23413 2026-04-01 07:59:05 Brian Schmidt B. Schmidt (ANU), K. Auchettl (University of Melbourne/UCSC), C. Lidman (ANU), B. Martin (ANU), Anais Moller (Swinburne), L. Rauf (ANU), Sara Romagnoli (University of Melbourne), Jennifer Shi (University of Melbourne), and B. E. Tucker (ANU) Supernova Alliance SN IIP 0.0155 1 Supernova Alliance Consistent with SN IIP 2 weeks after explosion 2026TNSCR1396....1S
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
23415 2026-03-24 18:42:39 ANU-2.3m / WiFeS Brian Schmidt Supernova Alliance tns_2026fdt_2026-03-24_18-42-39_ANU-2.3m_WiFeS_Supernova_Alliance.dat Object

Comments