RA/DEC (2000)
15:17:39.666 -24:55:07.62
229.4152745 -24.9187842
Type
SN Ia-91T-like
Redshift
0.043
Discovery ReportClassification Report
Related AstroNotes: 2026-186, 2026-188
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2026-06-03 06:29:01.996
TNS AT
Y
Public
Y
Discovery Mag
18.0461
Filter
g-ZTF
Reporter/s
Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026ocz - 2026-06-08 05:35:25 ESO-NTT / EFOSC2-NTT (ePESSTO+)z=
 ▌SN_2026ocz - 2026-06-06 00:00:00 Gemini-S / GMOS-S (GeminiClass)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
 ▌P48_ZTF-Cam_i
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_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
23968 2026-06-08 05:35:25 ESO-NTT / EFOSC2-NTT 600 E. Charleton, C.G. Touchard-Paxton, M. Ghendrih C. Dashwood-Brown ePESSTO+ tns_2026ocz_2026-06-08_05-35-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026ocz_2026-06-08_05-35-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
23961 2026-06-06 00:00:00 Gemini-S / GMOS-S Gemini GeminiClass tns_2026ocz_2026-06-06_Gemini-S_GMOS-S_GeminiClass.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2026-05-10 11:50:59 - 2026-06-06 12:04:33 2461170.993742 - 2461198.003157 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
589798 2026-06-06 12:04:33 2461198.003157 17.73 0.03 ABMag L-GOTO GOTO-S_GOTO-4 180
589797 2026-05-10 11:50:59 2461170.993742 20.4 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-05-27 02:58:58 - 2026-05-27 02:58:58 2461187.62428 - 2461187.62428 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
590178 2026-05-27 02:58:58 2461187.62428 18.64 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
i-ZTF P48_ZTF-Cam 2026-06-03 07:16:35 - 2026-06-03 07:16:35 2461194.8031829 - 2461194.8031829 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
588597 2026-06-03 07:16:35 2461194.8031829 18.3684 0.098577 ABMag i-ZTF P48_ZTF-Cam
r-ZTF P48_ZTF-Cam 2026-05-25 08:02:06 - 2026-05-25 08:02:06 2461185.8347917 - 2461185.8347917 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
588595 2026-05-25 08:02:06 2461185.8347917 20.2184 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2026-06-03 06:29:02 - 2026-06-03 06:29:02 2461194.770162 - 2461194.770162 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
588596 2026-06-03 06:29:02 2461194.770162 18.0461 0.069661 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-MLO_ATLAS-01 2026-06-04 10:36:28 - 2026-06-04 10:36:28 2461195.94199 - 2461195.94199 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
590179 2026-06-04 10:36:28 2461195.94199 17.991 0.094 18.9 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
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
307653 2026-06-08 15:44:52 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 15:17:39.691 -24:55:07.62 2026-06-04 10:36:27.936 17.991 orange-ATLAS PSN ATLAS26gyn ATLAS N
307471 2026-06-08 10:06:26 GOTO_bot G. Ramsay, K. Ackley, M. Dyer et al. GOTO GOTO 15:17:39.649 -24:55:07.53 2026-06-06 12:04:33.024 17.73 L-GOTO Other GOTO26fin GOTO N
306905 2026-06-03 07:49:32 BTSbot_bot Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF ZTF ZTF 15:17:39.666 -24:55:07.62 2026-06-03 06:29:01.996 18.0461 g-ZTF PSN ZTF26aazknmk ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). 2026TNSTR2357....1R N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23964 2026-06-08 16:56:38 ePESSTOplus_Bot1 E. Charleton, C.G. Touchard-Paxton, M. Ghendrih, C. Dashwood-Brown, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia-91T-like 0.043 1 ePESSTO+
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
23968 2026-06-08 05:35:25 ESO-NTT / EFOSC2-NTT 600 E. Charleton, C.G. Touchard-Paxton, M. Ghendrih C. Dashwood-Brown ePESSTO+ tns_2026ocz_2026-06-08_05-35-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026ocz_2026-06-08_05-35-25_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
23957 2026-06-07 16:38:38 Priscila Pessi A. Cikota (NOIRLab/Gemini South), P. Pessi (NCBJ), D. May (NOIRLab/Gemini South), V. Firpo (NOIRLab/Gemini South), F. Gran (NOIRLab/Gemini South), L. Magill (NOIRLab/Gemini South), P. King (NOIRLab/Gemini South), K. Silva (NOIRLab/Gemini South), P. Candia (NOIRLab/Gemini South), R. Ruiz-Carmona (NOIRLab/Gemini South), S. Panda (NOIRLab/Gemini South), J. Font-Serra (NOIRLab/Gemini South), R. Angeloni (NOIRLab/Gemini South), V. Kalari (NOIRLab/Gemini South), C. Rodriguez (NOIRLab/Gemini South), J.-E. Heo (NOIRLab/Gemini South), E. Sabbi (NOIRLab), T. Ahumada (NOIRLab/ SOAR), R. Cartier (University of Antofagasta), S. Cikota (CAHA) GeminiClass SN Ia-91T-like 0.043 1 GeminiClass
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
23961 2026-06-06 00:00:00 Gemini-S / GMOS-S Gemini GeminiClass tns_2026ocz_2026-06-06_Gemini-S_GMOS-S_GeminiClass.txt Object

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