RA/DEC (2000)
21:28:12.368 -65:49:16.82
322.051534286 -65.82134
Type
SN Ia-91bg-like
Redshift
0.056
Discovery ReportClassification Report
Related AstroNotes: 2026-145
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-05-15 03:12:55.008
TNS AT
Y
Public
Y
Discovery Mag
19.046
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_2026msv - 2026-05-20 08:00:25 ESO-NTT / EFOSC2-NTT (ePESSTO+)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_cyan
 ▌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
23788 2026-05-20 08:00:25 ESO-NTT / EFOSC2-NTT 900 Jasvinderjit Khaulsay, Jonathan Quirola Meng-Han Lee, Anirban Dutta, Aiswarya Sankar.K ePESSTO+ tns_2026msv_2026-05-20_08-00-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026msv_2026-05-20_08-00-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
cyan-ATLAS ATLAS-CHL_ATLAS-04 2026-05-13 05:05:48 - 2026-05-13 05:05:48 2461173.71236 - 2461173.71236 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
582925 2026-05-13 05:05:48 2461173.71236 19.48 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2026-05-15 03:12:55 - 2026-05-15 03:12:55 2461175.63397 - 2461175.63397 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
582926 2026-05-15 03:12:55 2461175.63397 19.046 0.198 19.35 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
303918 2026-05-15 20:05:22 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 21:28:12.368 -65:49:16.82 2026-05-15 03:12:55.008 19.046 orange-ATLAS PSN ATLAS26fri ATLAS 2026TNSTR2109....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
23784 2026-05-20 14:43:03 ePESSTOplus_Bot1 Jasvinderjit Khaulsay, Jonathan Quirola, Meng-Han Lee, Anirban Dutta, Aiswarya Sankar.K, A. Horowicz on behalf of ePESSTO+ ePESSTO+ SN Ia-91bg-like 0.056 1 ePESSTO+ 2026TNSCR2201....1K
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
23788 2026-05-20 08:00:25 ESO-NTT / EFOSC2-NTT 900 Jasvinderjit Khaulsay, Jonathan Quirola Meng-Han Lee, Anirban Dutta, Aiswarya Sankar.K ePESSTO+ tns_2026msv_2026-05-20_08-00-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026msv_2026-05-20_08-00-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments