RA/DEC (2000)
12:35:42.787 -04:05:03.13
188.92827798333 -4.084201675
Type
SN Ia
Redshift
0.06
Discovery ReportClassification Report
Related AstroNotes: DRAFT-2506, 2026-127
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-05-05 03:04:54.624
TNS AT
Y
Public
Y
Discovery Mag
18.773
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_2026ljy - 2026-05-07 05:04:25 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-TDO_ATLAS-05_wide
 ▌GOTO-S_GOTO-3_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_i
 ▌P48_ZTF-Cam_r
   
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
23657 2026-05-07 05:04:25 ESO-NTT / EFOSC2-NTT 1200 Camila Cárdenas, Jasvinderjit Khaulsay W-Y. Lu，H-M. Chang,  P-Y. Wang,  M-H. Lee,  A. Sankar.K, A. Dutta, A. Aryan, Y.-H. Lee, T.-W. Chen ePESSTO+ tns_2026ljy_2026-05-07_05-04-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026ljy_2026-05-07_05-04-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-05-03 23:27:15 - 2026-05-03 23:27:15 2461164.47726 - 2461164.47726 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579586 2026-05-03 23:27:15 2461164.47726 18.92 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-S_GOTO-3 2026-05-05 10:42:07 - 2026-05-05 10:42:07 2461165.945924 - 2461165.945924 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579867 2026-05-05 10:42:07 2461165.945924 18.48 0.08 ABMag L-GOTO GOTO-S_GOTO-3 180
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-05-05 03:04:55 - 2026-05-05 03:04:55 2461165.62841 - 2461165.62841 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579587 2026-05-05 03:04:55 2461165.62841 18.773 0.197 19.2 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
L-GOTO GOTO-N_GOTO-1 2026-05-01 23:15:36 - 2026-05-01 23:15:36 2461162.469168 - 2461162.469168 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579866 2026-05-01 23:15:36 2461162.469168 19 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
i-ZTF P48_ZTF-Cam 2026-05-07 04:29:06 - 2026-05-07 04:29:06 2461167.686875 - 2461167.686875 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579915 2026-05-07 04:29:06 2461167.686875 18.6029 0.105743 ABMag i-ZTF P48_ZTF-Cam
r-ZTF P48_ZTF-Cam 2026-05-01 07:00:38 - 2026-05-07 05:04:50 2461161.7921065 - 2461167.7116898 4
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579916 2026-05-07 05:04:50 2461167.7116898 18.2911 0.0639485 ABMag r-ZTF P48_ZTF-Cam
581166 2026-05-02 06:31:47 2461162.7720718 19.45 0.30796 18.8934 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
579914 2026-05-01 07:00:38 2461161.7921065 18.8671 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
581165 2026-05-01 07:00:38 2461161.7921065 18.8671 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
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
303068 2026-05-10 18:45:22 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 12:35:42.787 -04:05:03.13 2026-05-02 06:31:47.004 19.45 r-ZTF PSN ZTF26aauunhp ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF26aauunhp N
302505 2026-05-07 05:21:52 BTSbot_bot Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF ZTF ZTF 12:35:42.787 -04:05:03.10 2026-05-07 04:29:06.000 18.6029 i-ZTF PSN ZTF26aauunhp ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
302482 2026-05-06 18:44:30 GOTO_bot M. Pursiainen, D. O'Neill, K. Ackley et al. GOTO GOTO 12:35:42.736 -04:05:02.99 2026-05-05 10:42:07.488 18.48 L-GOTO Other GOTO26eii GOTO N
302328 2026-05-05 08:44:03 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 12:35:42.739 -04:05:03.42 2026-05-05 03:04:54.624 18.773 orange-ATLAS PSN ATLAS26fdy ATLAS 2026TNSTR1938....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
23654 2026-05-07 15:50:29 ePESSTOplus_Bot1 Camila Cárdenas, Jasvinderjit Khaulsay, W-Y. Lu，H-M. Chang,  P-Y. Wang,  M-H. Lee,  A. Sankar.K, A. Dutta, A. Aryan, Y.-H. Lee, T.-W. Chen, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia 0.06 1 ePESSTO+ 2026TNSCR1980....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
23657 2026-05-07 05:04:25 ESO-NTT / EFOSC2-NTT 1200 Camila Cárdenas, Jasvinderjit Khaulsay W-Y. Lu，H-M. Chang,  P-Y. Wang,  M-H. Lee,  A. Sankar.K, A. Dutta, A. Aryan, Y.-H. Lee, T.-W. Chen ePESSTO+ tns_2026ljy_2026-05-07_05-04-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026ljy_2026-05-07_05-04-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Sun, 05/10/2026 - 18:45

Object coordinates updated

Object coordinates updated according to AT-report 303068 of Group ZTF
Previous RA, DEC: 12:35:42.787, -04:05:03.10 (188.9282779, -4.0841934)
Updated RA, DEC: 12:35:42.787, -04:05:03.13 (188.92827798333, -4.084201675)

TNS
System

Thu, 05/07/2026 - 05:21

Object coordinates updated

Object coordinates updated according to AT-report 302505 of Group ZTF
Previous RA, DEC: 12:35:42.739, -04:05:03.42 (188.928078571, -4.08428428571)
Updated RA, DEC: 12:35:42.787, -04:05:03.10 (188.9282779, -4.0841934)