RA/DEC (2000)
01:07:49.425 +41:59:43.38
16.9559363 +41.9953843
Type
SN Icn
Redshift
0.0195
Discovery ReportClassification Report
Related AstroNotes: 2026-176, 2026-180, 2026-189
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2026-05-31 11:26:58.001
TNS AT
Y
Public
Y
Discovery Mag
15.9353
Filter
r-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026obc - 2026-06-03 11:17:01 P200 / NGPS (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_r
 ▌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
23933 2026-06-03 11:17:01 P200 / NGPS Gokul Srinivasaragavan Gokul Srinivasaragavan ZTF tns_2026obc_2026-06-03_11-17-01_P200_NGPS_ZTF.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2026-05-21 11:48:10 - 2026-06-02 11:06:48 2461181.9917824 - 2461193.9630556 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
588453 2026-06-02 11:06:48 2461193.9630556 15.1048 0.0142458 ABMag r-ZTF P48_ZTF-Cam
588452 2026-05-31 11:26:58 2461191.9770602 15.9353 0.0291971 ABMag r-ZTF P48_ZTF-Cam
588451 2026-05-21 11:48:10 2461181.9917824 19.1288 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2026-02-27 06:13:07 - 2026-06-09 13:58:41 2461098.75911 - 2461201.08242 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
590649 2026-06-09 13:58:41 2461201.08242 15.634 0.019 19.03 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
590648 2026-02-27 06:13:07 2461098.75911 18.69 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 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
307892 2026-06-09 20:38:33 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 01:07:49.430 +41:59:43.41 2026-06-09 13:58:41.088 15.634 orange-ATLAS PSN ATLAS26hal ATLAS N
306824 2026-06-02 11:35:15 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 01:07:49.425 +41:59:43.38 2026-05-31 11:26:58.001 15.9353 r-ZTF PSN ZTF26aayznam ZTF N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23929 2026-06-03 17:02:26 Jacob Wise Jacob Wise (LJMU), Daniel Perley (LJMU), Rahul Jayaraman (Cornell), Gokul Srinivasaragavan (UMD), K-Ryan Hinds (Caltech), Anna Ho (Cornell), Christoffer Fremling (Caltech), Jesper Sollerman (OKC), Zoë McGrath (LJMU), Aleksandra Bochenek (LJMU), Yogesh Wagh (LJMU), Steve Schulze (WIS), Anjasha Gangopadhyay (OKC), Sam Rose (Caltech) ZTF SN Icn 0.0195 1 ZTF Spectrum displays strong P-Cygni features of C II, C III and C IV, along with a lack of H and He, consistent with the classification of SN Icn. A redshift of z = 0.0195 was measured using narrow calcium Fraunhofer H and K absorption, as well as narrow H-alpha emission, from the host. We note that at 85 Mpc this is the closest SN Icn since SN 2019jc. Additional details are given in AstroNote 2026-180.
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
23933 2026-06-03 11:17:01 P200 / NGPS Gokul Srinivasaragavan Gokul Srinivasaragavan ZTF tns_2026obc_2026-06-03_11-17-01_P200_NGPS_ZTF.txt Object

Comments