RA/DEC (2000)
10:37:19.555 -40:58:32.25
159.331478 -40.975626
Type
SN IIb
Redshift
0.02
Discovery ReportClassification Report
Related AstroNotes: 2026-121
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-04-15 03:09:58.752
TNS AT
Y
Public
Y
Discovery Mag
19.251
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_2026kba - 2026-05-04 03:39:13 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-CHL_ATLAS-04_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
23617 2026-05-04 03:39:13 ESO-NTT / EFOSC2-NTT 900 Camila Cárdenas, Jasvinderjit Khaulsay Aiswarya Sankar.K, Anirban Dutta, Amar Aryan, Ting-Wan Chen, Chen-Yen Hsu, Khoa Ngo, Thanh Ho ePESSTO+ tns_2026kba_2026-05-04_03-39-13_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026kba_2026-05-04_03-39-13_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2026-04-05 10:17:07 - 2026-04-12 09:57:14 2461135.928548 - 2461142.914744 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
578529 2026-04-12 09:57:14 2461142.914744 20.5 0.21 ABMag L-GOTO GOTO-S_GOTO-4 180
578528 2026-04-05 10:17:07 2461135.928548 19.8 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-04-14 03:17:49 - 2026-04-15 03:09:59 2461144.63737 - 2461145.63193 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
576323 2026-04-15 03:09:59 2461145.63193 19.251 0.184 19.42 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
576322 2026-04-14 03:17:49 2461144.63737 19.32 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 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
301781 2026-04-27 22:57:41 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 10:37:19.549 -40:58:32.27 2026-04-12 09:57:13.536 20.5 L-GOTO Other GOTO26ebg GOTO N
300663 2026-04-18 22:51:56 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 10:37:19.555 -40:58:32.25 2026-04-15 03:09:58.752 19.251 orange-ATLAS PSN ATLAS26eld ATLAS 2026TNSTR1693....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
23614 2026-05-04 17:05:01 ePESSTOplus_Bot1 Camila Cárdenas, Jasvinderjit Khaulsay, Aiswarya Sankar.K, Anirban Dutta, Amar Aryan, Ting-Wan Chen, Chen-Yen Hsu, Khoa Ngo, Thanh Ho, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN IIb 0.02 1 ePESSTO+ 2026TNSCR1935....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
23617 2026-05-04 03:39:13 ESO-NTT / EFOSC2-NTT 900 Camila Cárdenas, Jasvinderjit Khaulsay Aiswarya Sankar.K, Anirban Dutta, Amar Aryan, Ting-Wan Chen, Chen-Yen Hsu, Khoa Ngo, Thanh Ho ePESSTO+ tns_2026kba_2026-05-04_03-39-13_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026kba_2026-05-04_03-39-13_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments