RA/DEC (2000)
02:03:00.498 -09:39:50.06
30.7520769 -9.6639063
Type
SN IIb
Redshift
0.012879
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-10-11 08:02:10.003
TNS AT
Y
Public
Y
Discovery Mag
19.1782
Filter
r-ZTF
Reporter/s
Nabeel Rehemtulla (CIERA, NU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025ztn - 2025-10-12 03:39:45 LT / SPRAT (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-N_GOTO-2_L
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
   
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
22190 2025-10-12 03:39:45 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Aleksandra Bochenek, Zoe McGrath Jacob Wise ZTF tns_2025ztn_2025-10-12_03-39-45.342_LT_SPRAT_ZTF.spec Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-10-11 01:11:26 - 2025-10-12 00:09:49 2460959.54961 - 2460960.50682 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
523132 2025-10-12 00:09:49 2460960.50682 18.542 0.162 19.57 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
523131 2025-10-11 01:11:26 2460959.54961 19.31 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-10-18 23:09:39 - 2025-10-18 23:09:39 2460967.46504 - 2460967.46504 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
524868 2025-10-18 23:09:39 2460967.46504 16.83 0.02 ABMag L-GOTO GOTO-N_GOTO-2 180
L-GOTO GOTO-N_GOTO-1 2025-10-05 00:35:12 - 2025-10-05 00:35:12 2460953.524449 - 2460953.524449 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
524867 2025-10-05 00:35:12 2460953.524449 19.1 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-10-11 08:02:10 - 2025-10-11 08:02:10 2460959.834838 - 2460959.834838 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
522782 2025-10-11 08:02:10 2460959.834838 19.1782 0.0918955 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-10-09 08:40:52 - 2025-10-11 09:03:56 2460957.861713 - 2460959.8777315 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
522783 2025-10-11 09:03:56 2460959.8777315 19.5583 0.152393 ABMag g-ZTF P48_ZTF-Cam
522781 2025-10-09 08:40:52 2460957.861713 19.1667 ABMag g-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
273905 2025-10-19 10:41:50 GOTO_bot G. Ramsay,D. O'Neill,K. Ackley et al. GOTO GOTO 02:03:00.490 -09:39:49.93 2025-10-18 23:09:39.456 16.83 L-GOTO Other GOTO25ira GOTO N
272989 2025-10-12 08:57:41 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 02:03:00.485 -09:39:50.15 2025-10-12 00:09:49.248 18.542 wide-ATLAS PSN ATLAS25moi ATLAS N
272742 2025-10-11 13:36:46 Fritz Nabeel Rehemtulla (CIERA,NU),Christoffer Fremling (Caltech) et al. ZTF ZTF 02:03:00.498 -09:39:50.06 2025-10-11 08:02:10.003 19.1782 r-ZTF PSN ZTF25abwjtwc ZTF 2025TNSTR4074....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
22190 2025-10-12 04:22:00 Jacob Wise Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (Caltech), Aleksandra Bochenek (LJMU), Zoe McGrath (LJMU) ZTF SN IIb 0.012879 1 1 ZTF Spectrum is well-fit to template spectra from previously classified young SN IIb. Redshift of z = 0.012879 ± 0.000017 from Springob et al. (2005). Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022). 2025TNSCR4093....1W
Related files
File Comments Last Modified (UT) Modified By
tns_2025ztn_atrep_22190_ZTF.pdf NGSF fits 2025-10-12 04:22:00 Jacob Wise
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
22190 2025-10-12 03:39:45 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Aleksandra Bochenek, Zoe McGrath Jacob Wise ZTF tns_2025ztn_2025-10-12_03-39-45.342_LT_SPRAT_ZTF.spec Object

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