RA/DEC (2000)
09:03:36.117 -67:58:13.34
135.900486 -67.970372
Type
SN II
Redshift
0.004733
Discovery ReportClassification Report
Related AstroNotes: 2026-90
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-03-27 02:49:03.360
TNS AT
Y
Public
Y
Discovery Mag
18.505
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_2026hkg - 2026-03-27 18:12:42 SALT / RSS (PASSTA)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

 ▌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
23368 2026-03-27 18:12:42 SALT / RSS 1200 L. Townsend S. W. Jha PASSTA tns_2026hkg_2026-03-27_18-12-42.000_SALT_RSS_PASSTA.txt tns_2026hkg_2026-03-27_18-12-42.000_SALT_RSS_PASSTA.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-03-27 02:49:03 - 2026-03-27 02:49:03 2461126.6174 - 2461126.6174 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
570403 2026-03-27 02:49:03 2461126.6174 18.505 0.131 19.06 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2026-03-25 21:08:35 - 2026-03-25 21:08:35 2461125.38096 - 2461125.38096 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
570402 2026-03-25 21:08:35 2461125.38096 19.52 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
297494 2026-03-27 07:40:49 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 09:03:36.117 -67:58:13.34 2026-03-27 02:49:03.360 18.505 orange-ATLAS PSN ATLAS26djy ATLAS 2026TNSTR1313....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
23366 2026-03-27 21:49:40 SAGUARO_Bot1 G. Hosseinzadeh (UCSD), S. W. Jha (Rutgers), M. Shrestha (Monash), D. J. Sand (UA), and J. Farah (Las Cumbres/UCSB) on behalf of the PASSTA Collaboration PASSTA SN II 0.004733 1 PASSTA The spectrum shows a blue continuum with broad, intermediate-width, and narrow hydrogen emission lines, similar to SN 1998S. We therefore classify it as a very young Type II supernova, though it could be a Type IIn supernova if these features persist. 2026TNSCR1322....1H
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
23368 2026-03-27 18:12:42 SALT / RSS 1200 L. Townsend S. W. Jha PASSTA tns_2026hkg_2026-03-27_18-12-42.000_SALT_RSS_PASSTA.txt tns_2026hkg_2026-03-27_18-12-42.000_SALT_RSS_PASSTA.fits Object

Comments