RA/DEC (2000)
23:43:54.761 +40:01:31.30
355.978169728 +40.0253614542
Type
SN Ia
Redshift
0.068
Discovery ReportClassification Report
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2025-08-22 07:44:15.999
TNS AT
Y
Public
Y
Host Name
SDSS J234355.18+400130.7
Discovery Mag
20.3331
Filter
g-ZTF
Reporter/s
A. Munoz-Arancibia, G. Pignata, F.E. Bauer, F. Forster, A. Mourao, S. Jurado, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, F. Andrades, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025uyi - 2025-09-06 01:51:53 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

 ▌GOTO-N_GOTO-2_L
 ▌PS2_GPC2_w
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_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
21974 2025-09-06 01:51:53 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Zoe McGrath Jacob Wise ZTF tns_2025uyi_2025-09-06_01-51-52.637_LT_SPRAT_ZTF.spec Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-08-23 00:26:51 - 2025-08-23 00:26:51 2460910.518647 - 2460910.518647 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
515858 2025-08-23 00:26:51 2460910.518647 19.7 ABMag L-GOTO GOTO-N_GOTO-2 360 [Last non detection]
w-P1 PS2_GPC2 2025-09-18 09:02:01 - 2025-09-18 09:02:01 2460936.8764 - 2460936.8764 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
546459 2025-09-18 09:02:01 2460936.8764 18.81 0.01 22 ABMag w-P1 PS2_GPC2 45 Robot
L-GOTO GOTO-N_GOTO-1 2025-09-06 02:42:59 - 2025-09-06 02:42:59 2460924.613177 - 2460924.613177 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
515859 2025-09-06 02:42:59 2460924.613177 18.36 0.07 ABMag L-GOTO GOTO-N_GOTO-1 360
r-ZTF P48_ZTF-Cam 2025-08-17 08:10:49 - 2025-08-17 08:10:49 2460904.8408449 - 2460904.8408449 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
511264 2025-08-17 08:10:49 2460904.8408449 20.6464 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
g-ZTF P48_ZTF-Cam 2025-08-17 06:54:09 - 2025-08-22 07:44:16 2460904.7876042 - 2460909.8224074 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
511265 2025-08-22 07:44:16 2460909.8224074 20.3331 0.181443 20.7759 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
514932 2025-08-22 07:44:16 2460909.8224074 20.3331 0.181443 20.7759 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
514931 2025-08-17 06:54:09 2460904.7876042 20.6619 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-08-23 10:28:09 - 2025-08-28 12:32:06 2460910.93622 - 2460916.02229 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
513453 2025-08-28 12:32:06 2460916.02229 18.845 0.056 20.16 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 110 Robot
513452 2025-08-23 10:28:09 2460910.93622 20.05 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 110 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
285174 2025-12-31 15:37:44 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 23:43:54.761 +40:01:31.30 2025-09-18 09:02:00.960 18.81 w-P1 PSN PS25lzi Pan-STARRS N
269418 2025-09-06 07:56:45 GOTO_bot D. O'Neill, G. Ramsay, K. Ackley et al. GOTO GOTO 23:43:54.774 +40:01:31.57 2025-09-06 02:42:58.752 18.36 L-GOTO Other GOTO25gwa GOTO N
268950 2025-09-01 18:55:32 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 23:43:54.773 +40:01:31.39 2025-08-22 07:44:15.999 20.3331 g-ZTF PSN ZTF25abkqros ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25abkqros N
268221 2025-08-28 15:39:10 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 23:43:54.778 +40:01:31.23 2025-08-28 12:32:05.856 18.845 orange-ATLAS PSN ATLAS25kqc ATLAS N
267115 2025-08-22 20:35:16 ALeRCE A. Munoz-Arancibia, G. Pignata, F.E. Bauer et al. ALeRCE ZTF 23:43:54.773 +40:01:31.45 2025-08-22 07:44:15.999 20.3331 g-ZTF PSN SDSS J234355.18+400130.7 ZTF25abkqros ZTF SN candidate classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF25abkqros 2025TNSTR3312....1M N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21974 2025-09-06 08:55:11 Jacob Wise Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (LJMU), Zoe McGrath (LJMU) ZTF SN Ia 0.068 1 1 ZTF Spectrum is well-fit by template spectra from previously classified SN Ia events. Redshift of z = 0.068 from host H-alpha emission. Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022). 2025TNSCR3596....1W
Related files
File Comments Last Modified (UT) Modified By
tns_2025uyi_atrep_21974_ZTF.pdf NGSF fits 2025-09-06 08:55:12 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
21974 2025-09-06 01:51:53 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Zoe McGrath Jacob Wise ZTF tns_2025uyi_2025-09-06_01-51-52.637_LT_SPRAT_ZTF.spec Object

Comments

TNS
System

Wed, 12/31/2025 - 15:37

Object coordinates updated

Object coordinates updated according to AT-report 285174 of Group Pan-STARRS
Previous RA, DEC: 23:43:54.773, +40:01:31.39 (355.97822088889, +40.025385033333)
Updated RA, DEC: 23:43:54.761, +40:01:31.30 (355.978169728, +40.0253614542)

TNS
System

Mon, 09/01/2025 - 18:55

Object coordinates updated

Object coordinates updated according to AT-report 268950 of Group ZTF
Previous RA, DEC: 23:43:54.773, +40:01:31.45 (355.9782227, +40.0254017)
Updated RA, DEC: 23:43:54.773, +40:01:31.39 (355.97822088889, +40.025385033333)