RA/DEC (2000)
09:37:40.689 +20:02:14.98
144.4195369 +20.0374957
Type
TDE
Redshift
0.15
Discovery ReportClassification Report
Related AstroNotes: 2026-6, 2026-7
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-12-18 10:24:31.999
TNS AT
Y
Public
Y
Discovery Mag
20.746
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

 ▌TDE_2025aljd - 2026-01-12 11:16:48 Lick-3m / KAST (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-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_cyan
   
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
22797 2026-01-12 11:16:48 Lick-3m / KAST R. Chornock, E. Hammerstein ZTF tns_2025aljd_2026-01-12.47_Lick-3m_KAST_ZTF.flm Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-01-12 02:27:02 - 2026-01-12 02:27:02 2461052.60211 - 2461052.60211 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
549118 2026-01-12 02:27:02 2461052.60211 19.929 0.157 20.31 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
L-GOTO GOTO-N_GOTO-1 2026-01-09 05:37:43 - 2026-01-10 00:47:35 2461049.734535 - 2461050.533042 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
548097 2026-01-10 00:47:35 2461050.533042 19.46 0.12 ABMag L-GOTO GOTO-N_GOTO-1 180
548096 2026-01-09 05:37:43 2461049.734535 19.3 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-12-18 09:38:04 - 2025-12-18 09:38:04 2461027.9014352 - 2461027.9014352 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
547837 2025-12-18 09:38:04 2461027.9014352 20.5889 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-12-18 10:24:32 - 2026-01-09 08:36:33 2461027.9337037 - 2461049.8587153 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
547839 2026-01-09 08:36:33 2461049.8587153 19.8092 0.123256 ABMag g-ZTF P48_ZTF-Cam
547838 2025-12-18 10:24:32 2461027.9337037 20.746 0.189161 ABMag g-ZTF P48_ZTF-Cam
cyan-ATLAS ATLAS-HKO_ATLAS-02 2026-01-11 11:19:33 - 2026-01-11 11:19:33 2461051.97191 - 2461051.97191 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
549117 2026-01-11 11:19:33 2461051.97191 19.48 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [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
286762 2026-01-12 16:38:17 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 09:37:40.698 +20:02:14.63 2026-01-12 02:27:02.304 19.929 wide-ATLAS PSN ATLAS26akp ATLAS N
286276 2026-01-10 09:14:53 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 09:37:40.678 +20:02:14.97 2026-01-10 00:47:34.656 19.46 L-GOTO Other GOTO26dh GOTO N
286142 2026-01-09 10:47:29 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 09:37:40.689 +20:02:14.98 2025-12-18 10:24:31.999 20.746 g-ZTF PSN ZTF25aclckzl ZTF 2026TNSTR..83....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
22796 2026-01-16 19:14:49 Ryan Chornock R. Chornock (UC Berkeley), E. Hammerstein (UC Berkeley), R. Stein (UMD/JSI), J. Carney (UNC), on behalf of ZTF ZTF TDE 0.15 1 ZTF 2026TNSCR.197....1C
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
22797 2026-01-12 11:16:48 Lick-3m / KAST R. Chornock, E. Hammerstein ZTF tns_2025aljd_2026-01-12.47_Lick-3m_KAST_ZTF.flm Object

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