RA/DEC (2000)
09:55:20.981 +03:12:45.99
148.837421 +3.212775
Type
SN Ib
Redshift
0.26
Discovery ReportClassification Report
Related AstroNotes: 2026-84
Reporting Group
SGLF
Discovering Data Source
Rubin
Discovery Date
2026-01-09 07:44:38.000
TNS AT
Y
Public
Y
Host Name
SDSS J095520.96+031245.4
Discovery Mag
23.06
Filter
i-LSST
Reporter/s
I. Pérez-Fournon (IAC and ULL), D. Cano-Morales, I. Correa-Plasencia, A.E. Hernández-Díaz, E. Lekaroz-Urriza, M. Quintana-Ansaldo (ULL), F. Poidevin (IAC and ULL), C. Jiménez Ángel (GRANTECAN), R. Shirley (MPE), R. Marques-Chaves (Univ. of Geneva), and S. Geier (GRANTECAN & IAC) on behalf of SGLF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026euq - 2026-03-22 04:12:42 Magellan-Clay / LDSS-3 (VHU-TDA)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

 ▌Rubin_LSSTCam_i
   
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
23353 2026-03-22 04:12:42 Magellan-Clay / LDSS-3 7200 Yuri Beletsky Yize Dong (Harvard/CfA) VHU-TDA tns_2026euq_2026-03-22_04-12-42.336_Magellan-Clay_LDSS-3_VHU-TDA.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
i-LSST Rubin_LSSTCam 2026-01-09 07:44:38 - 2026-01-09 07:44:38 2461049.822662 - 2461049.822662 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
562619 2026-01-09 07:44:38 2461049.822662 23.06 0.17 ABMag i-LSST Rubin_LSSTCam 30 Rubin
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
293514 2026-03-02 20:36:27 Ismael Perez-Fournon I. Pérez-Fournon (IAC and ULL), D. Cano-Morales, I. Correa-Plasencia et al. SGLF Rubin 09:55:20.981 +03:12:45.99 2026-01-09 07:44:38.000 23.06 i-LSST PSN SDSS J095520.96+031245.4 LSST-P-DO-313963406691402058 Rubin Rubin SN candidate discovered using the public LSST alerts, the LSST brokers, and our SGLF filters. LSST light curve available at the LSST brokers, e.g.: https://lasair.lsst.ac.uk/objects/313963406691402058/ 2026TNSTR.892....1P N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23351 2026-03-25 20:15:54 Yize Dong Yize Dong (Harvard/CfA), V. Ashley Villar (Harvard/CfA), Danielle Frostig(Harvard/CfA), Anya Nugent (Harvard/CfA), S. Karthik Yadavalli (Harvard/CfA), Alex Gagliano (Harvard/CfA), Kaylee de Soto (Harvard/CfA) VHU-TDA SN Ib 0.26 1 1 VHU-TDA Classified as a Type Ib around 10 to 30 days after peak using SNID-SAGE. 2026TNSCR1291....1D
Related files
File Comments Last Modified (UT) Modified By
tns_2026euq_atrep_23351_VHU-TDA.png 2026-03-25 20:15:54 Yize Dong
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
23353 2026-03-22 04:12:42 Magellan-Clay / LDSS-3 7200 Yuri Beletsky Yize Dong (Harvard/CfA) VHU-TDA tns_2026euq_2026-03-22_04-12-42.336_Magellan-Clay_LDSS-3_VHU-TDA.txt Object

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