RA/DEC (2000)
02:51:43.641 +14:24:04.38
42.9318379 +14.4012165
Type
SLSN-I
Redshift
0.284
Discovery ReportClassification Report
Related AstroNotes: 2026-2
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-11-24 07:38:42.996
TNS AT
Y
Public
Y
Discovery Mag
20.772
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_2025ahjh - 2026-01-15 20:24:11 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

 ▌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
22799 2026-01-15 20:24:11 NOT / ALFOSC 2400 Konstantinos Tsalapatas, Jesper Sollerman Konstantinos Tsalapatas ZTF tns_2025ahjh_2026-01-15_20-24-10.974_NOT_ALFOSC_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-1 2025-12-07 21:40:19 - 2025-12-08 21:27:44 2461017.402995 - 2461018.394259 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
540087 2025-12-08 21:27:44 2461018.394259 19.92 0.18 ABMag L-GOTO GOTO-N_GOTO-1 180
540086 2025-12-07 21:40:19 2461017.402995 19.8 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-11-12 07:35:16 - 2025-11-24 07:38:43 2460991.8161574 - 2461003.8185532 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
539950 2025-11-24 07:38:43 2461003.8185532 20.772 0.212233 ABMag r-ZTF P48_ZTF-Cam
539949 2025-11-12 07:35:16 2460991.8161574 19.6009 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-12-18 05:03:42 - 2025-12-18 05:03:42 2461027.7109028 - 2461027.7109028 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
539951 2025-12-18 05:03:42 2461027.7109028 19.9141 0.179461 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
281149 2025-12-18 09:26:25 GOTO_bot G. Ramsay,D. O'Neill,K. Ackley et al. GOTO GOTO 02:51:43.602 +14:24:04.59 2025-12-08 21:27:44.064 19.92 L-GOTO Other GOTO25lvh GOTO N
281085 2025-12-18 05:28:52 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 02:51:43.641 +14:24:04.38 2025-11-24 07:38:42.996 20.772 r-ZTF PSN ZTF25acgvbov ZTF 2025TNSTR5046....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
22798 2026-01-17 10:25:52 Steve Schulze Steve Schulze (Weizmann), Konstantinos Tsalapatas, Jesper Sollerman (OKC) report on behalf of the ZTF SLSN Science Working group ZTF SLSN-I 0.284 1 ZTF Template matching with SNID-SAGE (F. Stoppa et al., https://github.com/FiorenSt/SNID-SAGE). Good matches with the SLSNe 2018gft and 2018hti. 2026TNSCR.209....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
22799 2026-01-15 20:24:11 NOT / ALFOSC 2400 Konstantinos Tsalapatas, Jesper Sollerman Konstantinos Tsalapatas ZTF tns_2025ahjh_2026-01-15_20-24-10.974_NOT_ALFOSC_ZTF.ascii Object

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