RA/DEC (2000)
22:35:38.444 -55:59:06.00
338.910182222 -55.9850011111
Type
SN Ia-91T-like
Redshift
0.05
Discovery ReportClassification Report
Related AstroNotes: 2026-193
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-05-30 02:03:46.944
TNS AT
Y
Public
Y
Discovery Mag
18.424
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_2026olp - 2026-06-12 07:39:13 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

 ▌GOTO-S_GOTO-4_L
 ▌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
24026 2026-06-12 07:39:13 ESO-NTT / EFOSC2-NTT 400 E. Charleton, M. Ghendrih, C.G. Touchard-Paxton P. Wiseman ePESSTO+ tns_2026olp_2026-06-12_07-39-13_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026olp_2026-06-12_07-39-13_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2026-05-09 19:20:12 - 2026-06-06 17:09:33 2461170.305697 - 2461198.214969 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
590679 2026-06-06 17:09:33 2461198.214969 17.42 0.02 ABMag L-GOTO GOTO-S_GOTO-4 180
590678 2026-05-09 19:20:12 2461170.305697 20.1 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2026-05-26 23:25:17 - 2026-05-30 02:03:47 2461187.47589 - 2461190.58596 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
589583 2026-05-30 02:03:47 2461190.58596 18.424 0.172 18.88 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot
589582 2026-05-26 23:25:17 2461187.47589 18.94 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
307907 2026-06-09 21:20:46 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 22:35:38.472 -55:59:06.66 2026-06-06 17:09:33.408 17.42 L-GOTO Other GOTO26fsg GOTO N
307369 2026-06-07 19:33:21 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 22:35:38.444 -55:59:06.00 2026-05-30 02:03:46.944 18.424 orange-ATLAS PSN ATLAS26gwl ATLAS 2026TNSTR2372....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
24020 2026-06-12 15:37:45 ePESSTOplus_Bot1 E. Charleton, M. Ghendrih, C.G. Touchard-Paxton, P. Wiseman, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia-91T-like 0.05 1 ePESSTO+ 2026TNSCR2479....1C
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
24026 2026-06-12 07:39:13 ESO-NTT / EFOSC2-NTT 400 E. Charleton, M. Ghendrih, C.G. Touchard-Paxton P. Wiseman ePESSTO+ tns_2026olp_2026-06-12_07-39-13_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026olp_2026-06-12_07-39-13_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments