RA/DEC (2000)
09:31:50.563 -00:02:37.62
142.960677314 -0.0437828684409
Type
SN Ia-CSM
Redshift
0.111
Discovery ReportClassification Report
Related AstroNotes: 2026-129
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2026-03-27 05:28:15.000
TNS AT
Y
Public
Y
Discovery Mag
20.0426
Filter
g-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026iic - 2026-05-07 22:00:48 NOT / ALFOSC (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

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌GOTO-S_GOTO-3_L
 ▌PS2_GPC2_w
 ▌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
23671 2026-05-07 22:00:48 NOT / ALFOSC 1800 Astrid Lind Bouquin Anjasha Gangopadhyay ZTF tns_2026iic_2461168.41722_NOT_ALFOSC_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-04-02 23:09:56 - 2026-04-02 23:09:56 2461133.46523 - 2461133.46523 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
572903 2026-04-02 23:09:56 2461133.46523 19.04 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-S_GOTO-3 2026-03-25 11:18:49 - 2026-04-03 10:19:57 2461124.971397 - 2461133.93052 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
572940 2026-04-03 10:19:57 2461133.93052 19.4 0.22 ABMag L-GOTO GOTO-S_GOTO-3 180
572939 2026-03-25 11:18:49 2461124.971397 20 ABMag L-GOTO GOTO-S_GOTO-3 135 [Last non detection]
w-P1 PS2_GPC2 2026-04-07 06:12:09 - 2026-04-07 06:12:09 2461137.75844 - 2461137.75844 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
574533 2026-04-07 06:12:09 2461137.75844 19.04 0.04 22 ABMag w-P1 PS2_GPC2 45 Robot
r-ZTF P48_ZTF-Cam 2026-03-27 04:02:08 - 2026-04-05 03:31:50 2461126.6681481 - 2461135.6471065 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
572295 2026-04-05 03:31:50 2461135.6471065 19.0933 0.121875 ABMag r-ZTF P48_ZTF-Cam
572293 2026-03-27 04:02:08 2461126.6681481 19.8113 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2026-03-27 05:28:15 - 2026-03-27 05:28:15 2461126.7279514 - 2461126.7279514 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
572294 2026-03-27 05:28:15 2461126.7279514 20.0426 0.188875 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-MLO_ATLAS-01 2026-04-06 08:32:04 - 2026-04-06 08:32:04 2461136.8556 - 2461136.8556 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
572904 2026-04-06 08:32:04 2461136.8556 19.019 0.158 19.42 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
299715 2026-04-11 11:30:49 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 09:31:50.563 -00:02:37.62 2026-04-07 06:12:09.216 19.04 w-P1 PSN PS26axq Pan-STARRS N
298935 2026-04-06 23:11:44 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 09:31:50.557 -00:02:36.89 2026-04-03 10:19:56.928 19.4 L-GOTO Other GOTO26cvd GOTO N
298913 2026-04-06 20:00:47 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 09:31:50.583 -00:02:37.76 2026-04-06 08:32:03.840 19.019 orange-ATLAS PSN ATLAS26dup ATLAS N
298543 2026-04-05 04:23:41 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 09:31:50.569 -00:02:37.39 2026-03-27 05:28:15.000 20.0426 g-ZTF PSN ZTF26aaqdhwx ZTF 2026TNSTR1439....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
23668 2026-05-08 13:44:59 Ragnhild Lunnan Ragnhild Lunnan, Anjasha Gangopadhyay, Avinash Singh, Yang Hu ZTF SN Ia-CSM 0.111 1 ZTF Matches with a Type Ia-CSM SNe 2016iks and LSQ15adm using SNID-SAGE. 2026TNSCR2002....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
23671 2026-05-07 22:00:48 NOT / ALFOSC 1800 Astrid Lind Bouquin Anjasha Gangopadhyay ZTF tns_2026iic_2461168.41722_NOT_ALFOSC_ZTF.ascii Object

Comments

TNS
System

Sat, 04/11/2026 - 11:30

Object coordinates updated

Object coordinates updated according to AT-report 299715 of Group Pan-STARRS
Previous RA, DEC: 09:31:50.569, -00:02:37.39 (142.9607023, -0.0437187)
Updated RA, DEC: 09:31:50.563, -00:02:37.62 (142.960677314, -0.0437828684409)