RA/DEC (2000)
04:23:25.555 +05:49:00.15
65.8564809 +5.816708175
Type
SN Ia
Redshift
0.0694
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-10-01 10:06:25.001
TNS AT
Y
Public
Y
Discovery Mag
19.5068
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_2025zia - 2025-10-18 12:34:23 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

 ▌GOTO-N_GOTO-2_L
 ▌ATLAS-STH_ATLAS-03_orange
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
   
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
22257 2025-10-18 12:34:23 Lick-3m / KAST R. Michael Rich, Zoe McGrath, Aleksandra Bochenek, Ava Huddleston, Ethan Cotta Jacob Wise ZTF tns_2025zia_2025-10-18_12-34-23.01_Lick-3m_KAST_ZTF.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-09-26 04:55:59 - 2025-09-30 04:31:50 2460944.705543 - 2460948.688766 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
523399 2025-09-30 04:31:50 2460948.688766 19.86 0.14 ABMag L-GOTO GOTO-N_GOTO-2 360
523398 2025-09-26 04:55:59 2460944.705543 20.3 ABMag L-GOTO GOTO-N_GOTO-2 360 [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2025-10-01 00:27:47 - 2025-10-01 00:27:47 2460949.51929 - 2460949.51929 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521899 2025-10-01 00:27:47 2460949.51929 18.88 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
r-ZTF P48_ZTF-Cam 2025-09-25 11:54:56 - 2025-10-01 10:39:55 2460943.9964815 - 2460949.9443866 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521597 2025-10-01 10:39:55 2460949.9443866 19.5659 0.110619 ABMag r-ZTF P48_ZTF-Cam
521595 2025-09-25 11:54:56 2460943.9964815 20.5255 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-09-25 10:34:17 - 2025-10-01 10:06:25 2460943.9404745 - 2460949.9211227 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521596 2025-10-01 10:06:25 2460949.9211227 19.5068 0.0598 ABMag g-ZTF P48_ZTF-Cam
522588 2025-10-01 10:06:25 2460949.9211227 19.5646 0.119869 20.629 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
522587 2025-09-25 10:34:17 2460943.9404745 20.5642 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-10-02 12:14:45 - 2025-10-02 12:14:45 2460951.01024 - 2460951.01024 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521900 2025-10-02 12:14:45 2460951.01024 19.134 0.154 19.52 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
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
273126 2025-10-13 09:27:50 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 04:23:25.550 +05:49:00.34 2025-09-30 04:31:49.728 19.86 L-GOTO Other GOTO25iip GOTO N
272646 2025-10-08 18:16:34 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 04:23:25.555 +05:49:00.15 2025-10-01 10:06:25.001 19.5646 g-ZTF PSN ZTF25abuvxsy ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25abuvxsy N
272332 2025-10-02 15:47:14 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 04:23:25.570 +05:49:00.30 2025-10-02 12:14:44.736 19.134 orange-ATLAS PSN ATLAS25mhs ATLAS N
272194 2025-10-01 12:54:30 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 04:23:25.554 +05:49:00.10 2025-10-01 10:06:25.001 19.5068 g-ZTF PSN ZTF25abuvxsy ZTF 2025TNSTR3950....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
22257 2025-10-21 10:59:38 Jacob Wise Jacob Wise (LJMU), Aleksandra Bochenek (LJMU), Zoe McGrath (LJMU), Daniel Perley (LJMU), R. Michael Rich (UCLA), Ava Huddleston (UCLA), Ethan Cotta (UCLA) ZTF SN Ia 0.0694 1 1 ZTF Spectrum is well-fit to template spectra from previously classified SN Ia events. Redshift of z = 0.0694 from host H-alpha. Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022). 2025TNSCR4236....1W
Related files
File Comments Last Modified (UT) Modified By
tns_2025zia_atrep_22257_ZTF.pdf NGSF fits 2025-10-21 10:59:38 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
22257 2025-10-18 12:34:23 Lick-3m / KAST R. Michael Rich, Zoe McGrath, Aleksandra Bochenek, Ava Huddleston, Ethan Cotta Jacob Wise ZTF tns_2025zia_2025-10-18_12-34-23.01_Lick-3m_KAST_ZTF.txt Object

Comments

TNS
System

Wed, 10/08/2025 - 18:16

Object coordinates updated

Object coordinates updated according to AT-report 272646 of Group ZTF
Previous RA, DEC: 04:23:25.554, +05:49:00.10 (65.856474, +5.8166948)
Updated RA, DEC: 04:23:25.555, +05:49:00.15 (65.8564809, +5.816708175)