RA/DEC (2000)
01:30:06.340 +53:52:01.36
22.5264181 +53.8670452
Type
SN Ia
Redshift
0.053
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-07-29 04:49:21.216
TNS AT
Y
Public
Y
Discovery Mag
19.71
Filter
L-GOTO
Reporter/s
A. Kumar, D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025sno - 2025-09-06 03:11:36 LT / SPRAT (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-2_L
 ▌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
21975 2025-09-06 03:11:36 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Zoe McGrath Jacob Wise ZTF tns_2025sno_2025-09-06_03-11-36.488_LT_SPRAT_ZTF.spec Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-08-01 02:22:53 - 2025-08-01 02:22:53 2460888.59922 - 2460888.59922 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507413 2025-08-01 02:22:53 2460888.59922 19.72 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-07-18 03:14:20 - 2025-07-29 04:49:21 2460874.634947 - 2460885.70094 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505832 2025-07-29 04:49:21 2460885.70094 19.71 0.14 ABMag L-GOTO GOTO-N_GOTO-2 360
505831 2025-07-18 03:14:20 2460874.634947 18.6 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
g-ZTF P48_ZTF-Cam 2025-07-24 08:27:44 - 2025-08-04 10:28:21 2460880.8525926 - 2460891.9363542 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507393 2025-08-04 10:28:21 2460891.9363542 19.1354 0.0990379 ABMag g-ZTF P48_ZTF-Cam
507392 2025-07-30 08:23:19 2460886.8495255 19.7268 0.0787517 ABMag g-ZTF P48_ZTF-Cam
507391 2025-07-24 08:27:44 2460880.8525926 20.3837 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
cyan-ATLAS ATLAS-HKO_ATLAS-02 2025-08-04 13:11:48 - 2025-08-04 13:11:48 2460892.04986 - 2460892.04986 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507414 2025-08-04 13:11:48 2460892.04986 18.971 0.148 19.49 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 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
265011 2025-08-04 18:49:28 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 01:30:06.352 +53:52:01.22 2025-08-04 13:11:47.904 18.971 cyan-ATLAS PSN ATLAS25jbe ATLAS N
264999 2025-08-04 11:22:08 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 01:30:06.340 +53:52:01.36 2025-07-30 08:23:19.003 19.7268 g-ZTF PSN ZTF25abfqfnj ZTF N
264196 2025-07-29 09:09:19 GOTO_bot A. Kumar,D. O'Neill,K. Ackley et al. GOTO GOTO 01:30:06.343 +53:52:02.16 2025-07-29 04:49:21.216 19.71 L-GOTO Other GOTO25fnf GOTO 2025TNSTR2967....1K N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21975 2025-09-06 10:28:45 Jacob Wise Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (LJMU), Zoe McGrath (LJMU) ZTF SN Ia 0.053 1 1 ZTF Spectrum is well-fit by template spectra from previously classified SN Ia events. We also yield a fit to the SN IIb 2011fu, however the SN Ia fits are better and at a more appropriate phase. We therefore classify this event as a SN Ia, but also encourage further follow-up to confirm. Redshift of z = 0.053 ± 0.001 from host galaxy H-alpha. Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022). 2025TNSCR3596....1W
Related files
File Comments Last Modified (UT) Modified By
tns_2025sno_atrep_21975_ZTF.pdf NGSF fits 2025-09-06 10:28:50 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
21975 2025-09-06 03:11:36 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Zoe McGrath Jacob Wise ZTF tns_2025sno_2025-09-06_03-11-36.488_LT_SPRAT_ZTF.spec Object

Comments

TNS
System

Mon, 08/04/2025 - 11:22

Object coordinates updated

Object coordinates updated according to AT-report 264999 of Group ZTF
Previous RA, DEC: 01:30:06.343, +53:52:02.16 (22.52643, +53.867268)
Updated RA, DEC: 01:30:06.340, +53:52:01.36 (22.5264181, +53.8670452)