RA/DEC (2000)
23:55:18.032 +15:56:09.58
358.8251336 +15.9359952
Type
SLSN-I
Redshift
0.0879
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-12-06 03:05:28.000
TNS AT
Y
Public
Y
Discovery Mag
19.4166
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_2025afvq - 2026-01-09 19:59:51 NOT / ALFOSC (ZTF)z=
 ▌SN_2025afvq - 2025-12-23 00:00:00 CMO-2.5m / TDS (Fink)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
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌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
22754 2026-01-09 19:59:51 NOT / ALFOSC Jesper Sollerman, Anjasha Gangopadhyay Anjasha Gangopadhyay ZTF tns_2025afvq_2026-01-09_19-59-51_NOT_ALFOSC_ZTF.ascii Object
22682 2025-12-23 00:00:00 CMO-2.5m / TDS A.V.Dodin, A.A. Tatarnikov (SAI MSU) Fink tns_2025afvq_2025-12-23_CMO-2.5m_TDS_Fink.dat tns_2025afvq_2025-12-23_CMO-2.5m_TDS_Fink.fits Object Spectrum obtained with TDS of 2.5m telescope at CMO (Shatsky et al. 2020).
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-1 2025-12-04 20:18:26 - 2025-12-05 20:39:48 2461014.346139 - 2461015.360967 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536487 2025-12-05 20:39:48 2461015.360967 18.69 0.2 ABMag L-GOTO GOTO-N_GOTO-1 180
536486 2025-12-04 20:18:26 2461014.346139 19.3 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-12-06 03:05:28 - 2025-12-06 03:05:28 2461015.6287963 - 2461015.6287963 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536226 2025-12-06 03:05:28 2461015.6287963 19.4166 0.165824 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-12-06 04:40:15 - 2025-12-06 04:40:15 2461015.6946181 - 2461015.6946181 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536227 2025-12-06 04:40:15 2461015.6946181 18.9584 0.113779 ABMag g-ZTF P48_ZTF-Cam
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
279539 2025-12-07 11:15:18 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 23:55:18.031 +15:56:09.20 2025-12-05 20:39:47.808 18.69 L-GOTO Other GOTO25ldh GOTO N
279431 2025-12-06 06:58:34 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 23:55:18.032 +15:56:09.58 2025-12-06 03:05:28.000 19.4166 r-ZTF PSN ZTF25acfybcc ZTF 2025TNSTR4855....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
22753 2026-01-11 23:31:55 ZTF_Bot1 J. Sollerman, J. Castaneda Jaimes, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SLSN-I 0.0879 1 ZTF 2026TNSCR.115....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
22754 2026-01-09 19:59:51 NOT / ALFOSC Jesper Sollerman, Anjasha Gangopadhyay Anjasha Gangopadhyay ZTF tns_2025afvq_2026-01-09_19-59-51_NOT_ALFOSC_ZTF.ascii Object
22681 2025-12-24 17:19:46 Miguel Llamas Lanza Miguel Llamas Lanza (IRAP), M.V. Pruzhinskaya (LPCA), E. Quintin (ESA), E. Russeil (LPCA), E. Ishida (LPCA), Sergey Karpov (FZU), A.V.Dodin, A.A. Tatarnikov (SAI MSU) Fink Other 0.0879 1 Fink We cannot provide a definitive classification based on this spectrum. The observed properties (blue continuum, absolute magnitude reaching -20.3 in the g-band, slightly off-nuclear position, and the absence of typical TDE spectral features) are consistent with a superluminous supernova, but alternative interpretations cannot be excluded. 2025TNSCR5157....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
22682 2025-12-23 00:00:00 CMO-2.5m / TDS A.V.Dodin, A.A. Tatarnikov (SAI MSU) Fink tns_2025afvq_2025-12-23_CMO-2.5m_TDS_Fink.dat tns_2025afvq_2025-12-23_CMO-2.5m_TDS_Fink.fits Object Spectrum obtained with TDS of 2.5m telescope at CMO (Shatsky et al. 2020).

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