RA/DEC (2000)
23:11:33.607 -50:49:14.02
347.890029091 -50.8205618182
Type
SN Ia
Redshift
0.04
Discovery ReportClassification Report
Related AstroNotes: 2026-120
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-04-26 02:35:12.192
TNS AT
Y
Public
Y
Discovery Mag
17.035
Filter
cyan-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_2026kyj - 2026-05-03 08:59:17 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-CHL_ATLAS-04_orange
 ▌ATLAS-STH_ATLAS-03_cyan
   
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
23613 2026-05-03 08:59:17 ESO-NTT / EFOSC2-NTT 300 Jasvinder Khaulsay, Camila Cárdenas Aiswarya Sankar.K, Anirban Dutta, Amar Aryan, Ting-Wan Chen ePESSTO+ tns_2026kyj_2026-05-03_08-59-17_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026kyj_2026-05-03_08-59-17_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-12-18 11:11:03 - 2026-05-05 19:35:21 2461027.966011 - 2461166.316211 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579729 2026-05-05 19:35:21 2461166.316211 17.33 0.02 ABMag L-GOTO GOTO-S_GOTO-4 180
579728 2025-12-18 11:11:03 2461027.966011 20.3 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-04-21 08:41:31 - 2026-04-21 08:41:31 2461151.86216 - 2461151.86216 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
578398 2026-04-21 08:41:31 2461151.86216 19.21 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
cyan-ATLAS ATLAS-STH_ATLAS-03 2026-04-26 02:35:12 - 2026-04-26 02:35:12 2461156.60778 - 2461156.60778 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
578399 2026-04-26 02:35:12 2461156.60778 17.035 0.027 19.46 ABMag cyan-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
302408 2026-05-05 20:48:31 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 23:11:33.620 -50:49:14.26 2026-05-05 19:35:20.544 17.33 L-GOTO Other GOTO26efw GOTO N
301715 2026-04-27 18:49:43 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 23:11:33.607 -50:49:14.02 2026-04-26 02:35:12.192 17.035 cyan-ATLAS PSN ATLAS26exq ATLAS 2026TNSTR1840....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
23610 2026-05-04 13:10:10 ePESSTOplus_Bot1 Jasvinder Khaulsay, Camila Cárdenas, Aiswarya Sankar.K, Anirban Dutta, Amar Aryan, Ting-Wan Chen, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia 0.04 1 ePESSTO+ 2026TNSCR1936....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
23613 2026-05-03 08:59:17 ESO-NTT / EFOSC2-NTT 300 Jasvinder Khaulsay, Camila Cárdenas Aiswarya Sankar.K, Anirban Dutta, Amar Aryan, Ting-Wan Chen ePESSTO+ tns_2026kyj_2026-05-03_08-59-17_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026kyj_2026-05-03_08-59-17_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments