RA/DEC (2000)
20:05:16.831 +04:50:24.33
301.32012851111 +4.8400906777778
Type
SN Ia
Redshift
0.115
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-08-24 05:34:07.003
TNS AT
Y
Public
Y
Discovery Mag
20.6248
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_2025wcg - 2025-09-10 05:44:14 HET / HET-LRS (FLEET)z=
▌Show H at z=vexp= km/s
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▌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
 ▌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
22050 2025-09-10 05:44:14 HET / HET-LRS 2707.99 HET FLEET tns_2025wcg_2025-09-10_05-44-14.16_HET_HET-LRS_FLEET.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-08-25 10:42:03 - 2025-08-25 10:42:03 2460912.945874 - 2460912.945874 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
515153 2025-08-25 10:42:03 2460912.945874 19.88 0.21 ABMag L-GOTO GOTO-S_GOTO-3 180
L-GOTO GOTO-N_GOTO-1 2025-08-24 21:51:34 - 2025-08-24 21:51:34 2460912.41081 - 2460912.41081 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
515152 2025-08-24 21:51:34 2460912.41081 19.8 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-08-29 05:59:09 - 2025-08-29 05:59:09 2460916.7494097 - 2460916.7494097 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
513620 2025-08-29 05:59:09 2460916.7494097 19.8014 0.145811 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-08-22 07:13:06 - 2025-08-24 05:34:07 2460909.8007639 - 2460911.7320255 4
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
513619 2025-08-24 05:34:07 2460911.7320255 20.6248 0.17388 ABMag g-ZTF P48_ZTF-Cam
515603 2025-08-24 05:34:07 2460911.7320255 20.6189 0.306288 20.3287 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
513618 2025-08-22 07:13:06 2460909.8007639 20.5186 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
515602 2025-08-22 07:13:06 2460909.8007639 20.5186 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
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
269306 2025-09-04 18:15:48 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 20:05:16.831 +04:50:24.33 2025-08-24 05:34:07.003 20.6189 g-ZTF PSN ZTF25abmqycs ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25abmqycs N
269090 2025-09-02 12:32:11 GOTO_bot D. O'Neill, G. Ramsay, K. Ackley et al. GOTO GOTO 20:05:16.829 +04:50:23.92 2025-08-25 10:42:03.168 19.88 L-GOTO Other GOTO25gru GOTO N
268320 2025-08-29 06:54:28 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 20:05:16.826 +04:50:24.46 2025-08-24 05:34:07.003 20.6248 g-ZTF PSN ZTF25abmqycs ZTF 2025TNSTR3447....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
22050 2025-09-18 16:12:37 Megan Newsome Megan Newsome (UT Austin), Sebastian Gomez (UT Austin) FLEET SN Ia 0.115 1 1 FLEET AT2025wcg was selected as a possible TDE by our FLEET program with a P(TDE) = 0.44 (Gomez et al., 2023, ApJ, 949, 113). The redshift of z = 0.115 was estimated from NGSF (AstroNote 2022-191), from which we find a best match to SNe Ia. 2025TNSCR3763....1N
Related files
File Comments Last Modified (UT) Modified By
tns_2025wcg_atrep_22050_FLEET.pdf NGSF fit for AT2025wcg to SN 2013dy, a SN Ia. 2025-09-18 16:12:37 Megan Newsome
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
22050 2025-09-10 05:44:14 HET / HET-LRS 2707.99 HET FLEET tns_2025wcg_2025-09-10_05-44-14.16_HET_HET-LRS_FLEET.ascii Object

Comments

TNS
System

Thu, 09/04/2025 - 18:15

Object coordinates updated

Object coordinates updated according to AT-report 269306 of Group ZTF
Previous RA, DEC: 20:05:16.826, +04:50:24.46 (301.3201101, +4.840128)
Updated RA, DEC: 20:05:16.831, +04:50:24.33 (301.32012851111, +4.8400906777778)