RA/DEC (2000)
13:58:24.302 -03:02:49.29
209.6012563 -3.0470256
Type
SN Ia
Redshift
0.95
Discovery ReportClassification Report
Related AstroNotes: 2026-156, 2026-172
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2026-05-15 04:26:52.002
TNS AT
Y
Public
Y
Discovery Mag
19.8766
Filter
i-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026ngr - 2026-05-30 03:47:56 Magellan-Baade / FIRE (ZTF)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

 ▌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
23877 2026-05-30 03:47:56 Magellan-Baade / FIRE 2113.6 C. Liu, L. Kwok C. Liu ZTF tns_2026ngr_2461190.6582870376_Magellan-Baade_FIRE_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
i-ZTF P48_ZTF-Cam 2026-05-15 04:26:52 - 2026-05-21 07:22:05 2461175.6853241 - 2461181.8070023 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
584316 2026-05-21 07:22:05 2461181.8070023 19.4453 0.169828 ABMag i-ZTF P48_ZTF-Cam
584315 2026-05-15 04:26:52 2461175.6853241 19.8766 0.168791 ABMag i-ZTF P48_ZTF-Cam
r-ZTF P48_ZTF-Cam 2026-05-14 08:00:21 - 2026-05-14 08:00:21 2461174.8335764 - 2461174.8335764 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
584314 2026-05-14 08:00:21 2461174.8335764 20.123 ABMag r-ZTF P48_ZTF-Cam [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
304759 2026-05-21 08:07:06 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 13:58:24.302 -03:02:49.29 2026-05-15 04:26:52.002 19.8766 i-ZTF PSN ZTF26aaxhpdm ZTF 2026TNSTR2217....1S N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23873 2026-05-31 17:35:10 Chang Liu C. Liu, L. Kwok (Northwestern, CIERA), A. Goobar, J. Johansson (Stockholm University), J. Hinkle (UIUC) ZTF SN Ia 0.95 1 ZTF A strongly lensed Type Ia supernova at redshift z = 0.95. Assuming this redshift, the classification spectrum presents prominent Si II and Ca II lines at ~12,000 km/s.
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
23877 2026-05-30 03:47:56 Magellan-Baade / FIRE 2113.6 C. Liu, L. Kwok C. Liu ZTF tns_2026ngr_2461190.6582870376_Magellan-Baade_FIRE_ZTF.ascii Object

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