RA/DEC (2000)
13:30:27.783 -21:07:01.40
202.61576407 -21.1170545105
Type
SN IIb
Redshift
0.018953
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2026-03-18 09:01:53.002
TNS AT
Y
Public
Y
Discovery Mag
19.6596
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_2026fwq - 2026-03-25 07:01:03 P60 / SEDM (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

 ▌GOTO-S_GOTO-3_L
 ▌PS2_GPC2_w
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌ATLAS-STH_ATLAS-03_orange
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌BG3_BlackGEM-Cam3_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌Other_Other_Other
   
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
23344 2026-03-25 07:01:03 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2026fwq_2026-03-25_07-01-02.977777_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2026-03-14 17:33:17 - 2026-03-15 17:35:46 2461114.231452 - 2461115.233174 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
568977 2026-03-15 17:35:46 2461115.233174 19.97 0.22 ABMag L-GOTO GOTO-S_GOTO-3 180
568976 2026-03-14 17:33:17 2461114.231452 20.2 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
w-P1 PS2_GPC2 2026-04-17 10:23:18 - 2026-04-17 10:23:18 2461147.93285 - 2461147.93285 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
576299 2026-04-17 10:23:18 2461147.93285 17.45 0.01 22 ABMag w-P1 PS2_GPC2 45 Robot
cyan-ATLAS ATLAS-CHL_ATLAS-04 2026-03-23 04:41:46 - 2026-03-23 04:41:46 2461122.69567 - 2461122.69567 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
569430 2026-03-23 04:41:46 2461122.69567 18.299 0.069 19.63 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2026-03-19 02:19:58 - 2026-03-19 02:19:58 2461118.5972 - 2461118.5972 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
569429 2026-03-19 02:19:58 2461118.5972 17.31 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2026-03-24 04:48:39 - 2026-03-24 04:48:39 2461123.7004514 - 2461123.7004514 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
573340 2026-03-24 04:48:39 2461123.7004514 18.04 0.03 20.82 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic
BG-q-BlackGem BG3_BlackGEM-Cam3 2026-03-10 07:58:15 - 2026-03-10 07:58:15 2461109.8321181 - 2461109.8321181 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
573339 2026-03-10 07:58:15 2461109.8321181 20.32 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2026-03-15 08:31:10 - 2026-03-15 08:31:10 2461114.8549769 - 2461114.8549769 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
565691 2026-03-15 08:31:10 2461114.8549769 19.8081 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2026-03-12 10:02:26 - 2026-03-18 09:01:53 2461111.9183565 - 2461117.8763079 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
565692 2026-03-18 09:01:53 2461117.8763079 19.6596 0.184527 ABMag g-ZTF P48_ZTF-Cam
569728 2026-03-15 10:00:11 2461114.916794 20.1691 0.304225 19.9576 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
569727 2026-03-12 10:02:26 2461111.9183565 19.7578 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
Other- Other_Other 2025-07-15 00:02:12 - 2026-03-24 08:06:38 2460871.50153 - 2461123.83794 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
570593 2026-03-24 08:06:38 2461123.83794 18.1 20 VegaMag Other- Other_Other 60 Robot MASTER-OAFA
570592 2026-03-24 06:51:43 2461123.78592 17.5 20.1 VegaMag Other- Other_Other 60 Robot MASTER-OAFA
570591 2025-07-15 00:02:12 2460871.50153 20.8 VegaMag Other- Other_Other 180 Robot [Last non detection] MASTER-OAFA
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
300644 2026-04-18 22:31:37 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 13:30:27.783 -21:07:01.40 2026-04-17 10:23:18.240 17.45 w-P1 PSN PS26bbc Pan-STARRS N
299132 2026-04-07 15:37:08 BlackGEM_Bot1 H. Tranin, F. Stoppa, D. Pieterse et al. BlackGEM BlackGEM 13:30:27.801 -21:07:01.46 2026-03-24 04:48:39.000 18.04 BG-q-BlackGem PSN BGEM J133027.80-210701.5 BlackGEM N
297578 2026-03-27 16:56:04 MASTER A.Telnova, V.Fedorova, V.Lipunov et al. MASTER MASTER 13:30:27.760 -21:07:01.30 2026-03-24 06:51:43.488 17.5 Other- PSN MASTER OT J133027.76-210701.3 MASTER N
297177 2026-03-24 19:46:42 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 13:30:27.791 -21:07:01.40 2026-03-15 10:00:11.002 20.1691 g-ZTF PSN ZTF26aamtgup ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF26aamtgup N
297056 2026-03-23 10:28:40 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 13:30:27.800 -21:07:01.51 2026-03-23 04:41:45.888 18.299 cyan-ATLAS PSN ATLAS26dew ATLAS N
296848 2026-03-21 11:54:03 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 13:30:27.768 -21:07:01.32 2026-03-15 17:35:45.888 19.97 L-GOTO Other GOTO26cgk GOTO N
294933 2026-03-18 11:38:45 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 13:30:27.779 -21:07:01.34 2026-03-18 09:01:53.002 19.6596 g-ZTF PSN ZTF26aamtgup ZTF 2026TNSTR1165....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
23342 2026-03-25 08:35:52 ZTF_Bot1 J. Sollerman, J. Castaneda Jaimes, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN IIb 0.018953 1 ZTF 2026TNSCR1293....1S
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
23344 2026-03-25 07:01:03 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2026fwq_2026-03-25_07-01-02.977777_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Sat, 04/18/2026 - 22:31

Object coordinates updated

Object coordinates updated according to AT-report 300644 of Group Pan-STARRS
Previous RA, DEC: 13:30:27.791, -21:07:01.40 (202.61579515556, -21.117054288889)
Updated RA, DEC: 13:30:27.783, -21:07:01.40 (202.61576407, -21.1170545105)

TNS
System

Tue, 03/24/2026 - 19:46

Object coordinates updated

Object coordinates updated according to AT-report 297177 of Group ZTF
Previous RA, DEC: 13:30:27.779, -21:07:01.34 (202.6157477, -21.1170396)
Updated RA, DEC: 13:30:27.791, -21:07:01.40 (202.61579515556, -21.117054288889)