RA/DEC (2000)
00:49:41.561 -47:07:46.51
12.423171 -47.129586
Type
SN Ia
Redshift
0.05
Discovery ReportClassification Report
Related AstroNotes: 2026-145
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-04-30 09:41:04.992
TNS AT
Y
Public
Y
Discovery Mag
17.603
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_2026led - 2026-05-20 08:23:24 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_orange
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌BG4_BlackGEM-Cam4_BG-q
   
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
23784 2026-05-20 08:23:24 ESO-NTT / EFOSC2-NTT 1200 Jasvinderjit Khaulsay, Jonathan Quirola Meng-Han Lee, Anirban Dutta, Aiswarya Sankar.K ePESSTO+ tns_2026led_2026-05-20_08-23-24_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026led_2026-05-20_08-23-24_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-04-30 09:41:05 - 2026-04-30 09:41:05 2461160.90353 - 2461160.90353 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579131 2026-04-30 09:41:05 2461160.90353 17.603 0.083 18.64 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
cyan-ATLAS ATLAS-CHL_ATLAS-04 2026-01-21 02:20:25 - 2026-01-21 02:20:25 2461061.59751 - 2461061.59751 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579130 2026-01-21 02:20:25 2461061.59751 19.06 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2025-12-24 01:00:51 - 2026-05-22 10:15:42 2461033.5422569 - 2461182.9275694 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
584580 2026-05-22 10:15:42 2461182.9275694 18.25 0.04 20.3 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic
584579 2025-12-24 01:00:51 2461033.5422569 20.56 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [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
304884 2026-05-22 15:20:02 BlackGEM_Bot1 L. Landsberg, H. Tranin, F. Stoppa et al. BlackGEM BlackGEM 00:49:41.561 -47:07:46.51 2026-05-22 10:15:42.000 18.25 BG-q-BlackGem PSN BGEM J004941.56-470746.5 BlackGEM N
302084 2026-05-01 01:39:17 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 00:49:41.537 -47:07:46.57 2026-04-30 09:41:04.992 17.603 orange-ATLAS PSN ATLAS26ezt ATLAS 2026TNSTR1906....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
23780 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 0.05 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
23784 2026-05-20 08:23:24 ESO-NTT / EFOSC2-NTT 1200 Jasvinderjit Khaulsay, Jonathan Quirola Meng-Han Lee, Anirban Dutta, Aiswarya Sankar.K ePESSTO+ tns_2026led_2026-05-20_08-23-24_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026led_2026-05-20_08-23-24_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Fri, 05/22/2026 - 15:20

Object coordinates updated

Object coordinates updated according to AT-report 304884 of Group BlackGEM
Previous RA, DEC: 00:49:41.537, -47:07:46.57 (12.42307, -47.129602)
Updated RA, DEC: 00:49:41.561, -47:07:46.51 (12.423171, -47.129586)