RA/DEC (2000)
18:44:31.334 +12:21:50.43
281.1305575 +12.3640071
Type
SN Ia
Redshift
0.015507
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-08-03 04:17:46.999
TNS AT
Y
Public
Y
Discovery Mag
18.5492
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_2025taz - 2025-08-08 21:17:32 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-S_GOTO-4_L
 ▌ATLAS-STH_ATLAS-03_orange
 ▌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
21737 2025-08-08 21:17:32 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Steve Schulze, Ragnhild Lunnan, Conor Omand Jacob Wise ZTF tns_2025taz_2025-08-08_21-17-31.997_LT_SPRAT_ZTF.spec Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-08-03 01:04:05 - 2025-08-03 01:04:05 2460890.5445 - 2460890.5445 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
562146 2025-08-03 01:04:05 2460890.5445 18.83 0.097 20.22 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
L-GOTO GOTO-S_GOTO-4 2025-07-24 13:37:34 - 2025-08-06 10:15:29 2460881.067747 - 2460893.927418 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507638 2025-08-06 10:15:29 2460893.927418 17.55 0.06 ABMag L-GOTO GOTO-S_GOTO-4 360
507637 2025-07-24 13:37:34 2460881.067747 19.9 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2025-08-01 22:55:43 - 2025-08-01 22:55:43 2460889.45536 - 2460889.45536 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
562145 2025-08-01 22:55:43 2460889.45536 19.24 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
r-ZTF P48_ZTF-Cam 2025-08-03 04:17:47 - 2025-08-03 04:17:47 2460890.6790162 - 2460890.6790162 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507153 2025-08-03 04:17:47 2460890.6790162 18.5492 0.121208 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-08-01 06:08:44 - 2025-08-03 07:54:50 2460888.7560648 - 2460890.8297454 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507154 2025-08-03 07:54:50 2460890.8297454 19.4862 0.144703 ABMag g-ZTF P48_ZTF-Cam
507152 2025-08-01 06:08:44 2460888.7560648 20.8457 ABMag g-ZTF P48_ZTF-Cam [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
293284 2026-02-27 22:03:34 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 18:44:31.319 +12:21:50.86 2025-08-03 01:04:04.800 18.83 wide-ATLAS PSN ATLAS25qni ATLAS N
265139 2025-08-06 12:58:59 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 18:44:31.338 +12:21:50.85 2025-08-06 10:15:29.088 17.55 L-GOTO Other GOTO25frw GOTO N
264836 2025-08-03 11:00:50 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 18:44:31.334 +12:21:50.43 2025-08-03 04:17:46.999 18.5492 r-ZTF PSN ZTF23aaritkm ZTF 2025TNSTR3055....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
21737 2025-08-09 19:44:43 Jacob Wise Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (LJMU), Steve Schulze (CIERA), Ragnhild Lunnan (OKC), Conor Omand (LJMU) ZTF SN Ia 0.015507 1 ZTF Spectrum displays Fe features and Si II absorption characteristic of a SN Ia. Host redshift from Masters et al. (2014). 2025TNSCR3131....1W
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
21737 2025-08-08 21:17:32 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Steve Schulze, Ragnhild Lunnan, Conor Omand Jacob Wise ZTF tns_2025taz_2025-08-08_21-17-31.997_LT_SPRAT_ZTF.spec Object

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