RA/DEC (2000)
04:03:27.102 -57:43:47.16
60.8629257143 -57.7297657143
Type
SN II
Redshift
0.01701
Discovery ReportClassification Report
Related AstroNotes: 2026-211
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-07-08 03:30:43.776
TNS AT
Y
Public
Y
Discovery Mag
18.325
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, J. Weston, X. Sheng, C. R. Angus, D. Magill, A. J. Smith, L. Shingles (QUB), A. Aamer (Arizona), P. Ramsden (Birmingham/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (Oxford), L. Rhodes (TSI/McGill), T. Moore, A. Rest (STScI), T.-W. Chen (NCU), C. Deasy-Millar (TCD), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026sun - 2026-08-06 00:00:00 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
z-step:   v-step: 
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌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
24438 2026-08-06 00:00:00 ANU-2.3m / WiFeS B. P. Schmidt (ANU) L. Rauf (ANU) Supernova Alliance tns_2026sun_2026-08-06_ANU-2.3m_WiFeS_Supernova_Alliance.dat tns_2026sun_2026-08-06_ANU-2.3m_WiFeS_Supernova_Alliance.fits Object Fit with superfit.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
orange-ATLAS ATLAS-STH_ATLAS-03 2026-07-04 04:36:56 - 2026-07-08 03:30:44 2461225.69231 - 2461229.64634 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
600588 2026-07-08 03:30:44 2461229.64634 18.325 0.104 19.22 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot
600587 2026-07-04 04:36:56 2461225.69231 18.33 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 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
313585 2026-07-09 17:23:43 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 04:03:27.102 -57:43:47.16 2026-07-08 03:30:43.776 18.325 orange-ATLAS PSN ATLAS26ihd ATLAS 2026TNSTR2852....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
24431 2026-08-08 06:25:46 Liana Rauf L. Rauf (ANU), B. P. Schmidt (ANU), K. Auchettl (University of Melbourne/UCSC), P. Armstrong (ANU), D. Cao (ANU), C. Lidman (ANU), B. Martin (ANU), A. Protheroe (ANU), J. Shi (University of Melbourne), and B. E. Tucker (ANU) Supernova Alliance SN II 0.01701 1 Supernova Alliance Peculiar H-alpha line profile. 2026TNSCR3229....1R
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
24438 2026-08-06 00:00:00 ANU-2.3m / WiFeS B. P. Schmidt (ANU) L. Rauf (ANU) Supernova Alliance tns_2026sun_2026-08-06_ANU-2.3m_WiFeS_Supernova_Alliance.dat tns_2026sun_2026-08-06_ANU-2.3m_WiFeS_Supernova_Alliance.fits Object Fit with superfit.

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