RA/DEC (2000)
12:05:45.495 +31:03:32.11
181.4395609 +31.0589194
Type
SN Ib-pec
Redshift
0.02306
Related AstroNotes: 2026-124, 2026-136
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-05-04 08:39:07.200
TNS AT
Y
Public
Y
Discovery Mag
18.603
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)

Spectra

 SN_2026ljt - 2026-05-21 00:34:48 NOT / ALFOSC (None)z=
 SN_2026ljt - 2026-05-15 01:06:03 ESO-NTT / EFOSC2-NTT (ePESSTO+)z=
Show H at z=vexp= km/s
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Show [Ca II] at z=vexp= km/s
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Show Tellurics 
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 P48_ZTF-Cam_i
 P48_ZTF-Cam_g
 ATLAS-HKO_ATLAS-02_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
23808 2026-05-21 00:34:48 NOT / ALFOSC 1800 Jesper Sollerman, Kostas Tsalapatas Chang Liu None tns_2026ljt_2026-05-21_00-34-48_NOT_ALFOSC_None.ascii Object The host-galaxy subtraction was refined with HostSub_GP (Liu & Miller 2026).
23716 2026-05-15 01:06:03 ESO-NTT / EFOSC2-NTT 1200 J. Khaulsay, J. Quirola-Vasquez C. Aster ePESSTO+ tns_2026ljt_2026-05-15_01-06-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026ljt_2026-05-15_01-06-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
i-ZTF P48_ZTF-Cam 2026-05-01 05:29:54 - 2026-05-01 05:29:54 2461161.7290972 - 2461161.7290972 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
580058 2026-05-01 05:29:54 2461161.7290972 19.1953 ABMag i-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2026-05-02 04:51:47 - 2026-05-07 06:47:28 2461162.7026273 - 2461167.782963 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
580060 2026-05-07 06:47:28 2461167.782963 18.3351 0.0842459 ABMag g-ZTF P48_ZTF-Cam
580059 2026-05-02 04:51:47 2461162.7026273 19.1675 0.167643 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2026-05-03 09:10:09 - 2026-05-04 08:39:07 2461163.88205 - 2461164.8605 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579557 2026-05-04 08:39:07 2461164.8605 18.603 0.164 19.15 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
579556 2026-05-03 09:10:09 2461163.88205 18.99 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 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
302556 2026-05-07 09:17:18 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 12:05:45.495 +31:03:32.11 2026-05-02 04:51:46.998 19.1675 g-ZTF PSN ZTF18aacavav ZTF N
302313 2026-05-05 08:26:09 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 12:05:45.478 +31:03:32.75 2026-05-04 08:39:07.200 18.603 orange-ATLAS PSN ATLAS26fdh 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
23804 2026-05-24 03:58:40 Chang Liu Chang Liu (CIERA, NU), Jesper Sollerman, Kostas Tsalapatas, Joel Johansson (OKC), Steve Schulze (WIS) on behalf of ZTF None SN Ib-pec 0.02306 1 The spectrum is best matched to SN2020zgl and SN2016frp (Ib-pec) ~20 days after peak. 2026TNSCR2263....1L
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
23808 2026-05-21 00:34:48 NOT / ALFOSC 1800 Jesper Sollerman, Kostas Tsalapatas Chang Liu None tns_2026ljt_2026-05-21_00-34-48_NOT_ALFOSC_None.ascii Object The host-galaxy subtraction was refined with HostSub_GP (Liu & Miller 2026).
23713 2026-05-15 15:25:29 ePESSTOplus_Bot1 J. Khaulsay, J. Quirola-Vasquez, C. Aster, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia-91bg-like 0.023 1 ePESSTO+ 2026TNSCR2120....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
23716 2026-05-15 01:06:03 ESO-NTT / EFOSC2-NTT 1200 J. Khaulsay, J. Quirola-Vasquez C. Aster ePESSTO+ tns_2026ljt_2026-05-15_01-06-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026ljt_2026-05-15_01-06-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 302556 of Group ZTF
Previous RA, DEC: 12:05:45.478, +31:03:32.75 (181.43949, +31.059096)
Updated RA, DEC: 12:05:45.495, +31:03:32.11 (181.4395609, +31.0589194)