RA/DEC (2000)
01:56:47.750 -14:30:10.30
29.1989572961 -14.502861887
Type
SN Ia
Redshift
0.0685
Discovery ReportClassification Report
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2025-09-15 09:01:54.998
TNS AT
Y
Public
Y
Host Name
SDSS J015647.70-143010.1
Discovery Mag
20.0483
Filter
r-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_2025xqf - 2025-09-28 03:21:47 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

 ▌LAST_LAST-Cam_Clear
 ▌GOTO-S_GOTO-3_L
 ▌PS2_GPC2_r
 ▌PS2_GPC2_w
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌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
22109 2025-09-28 03:21:47 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Aleksandra Bochenek, Zoe McGrath Jacob Wise ZTF tns_2025xqf_2025-09-28_03-21-47.061_LT_SPRAT_ZTF.spec Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- LAST_LAST-Cam 2025-09-10 23:47:48 - 2025-09-17 23:31:13 2460929.49153 - 2460936.48001 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
518153 2025-09-17 23:31:13 2460936.48001 19.18 ABMag Clear- LAST_LAST-Cam 380
518152 2025-09-10 23:47:48 2460929.49153 19.52 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2025-09-14 18:45:39 - 2025-09-15 14:59:48 2460933.281705 - 2460934.124857 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519444 2025-09-15 14:59:48 2460934.124857 19.91 0.2 ABMag L-GOTO GOTO-S_GOTO-3 180
519443 2025-09-14 18:45:39 2460933.281705 19.6 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
r-P1 PS2_GPC2 2025-09-23 13:17:06 - 2025-09-23 13:17:06 2460942.05354 - 2460942.05354 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519707 2025-09-23 13:17:06 2460942.05354 18.29 0.03 20.6 ABMag r-P1 PS2_GPC2 27 Robot
w-P1 PS2_GPC2 2025-09-14 11:35:23 - 2025-09-14 11:35:23 2460932.98291 - 2460932.98291 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
545903 2025-09-14 11:35:23 2460932.98291 20.24 0.08 22 ABMag w-P1 PS2_GPC2 45 Robot
cyan-ATLAS ATLAS-CHL_ATLAS-04 2025-09-15 06:39:58 - 2025-09-18 05:37:37 2460933.77775 - 2460936.73446 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
518539 2025-09-18 05:37:37 2460936.73446 19.093 0.163 19.34 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
518538 2025-09-15 06:39:58 2460933.77775 19.43 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
r-ZTF P48_ZTF-Cam 2025-09-12 09:36:23 - 2025-09-15 09:01:55 2460930.9002662 - 2460933.876331 4
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
517463 2025-09-15 09:01:55 2460933.876331 20.0483 0.194661 20.1796 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
521936 2025-09-15 09:01:55 2460933.876331 20.0483 0.194661 20.1796 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
517462 2025-09-12 09:36:23 2460930.9002662 19.7597 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
521935 2025-09-12 09:36:23 2460930.9002662 19.7597 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
g-ZTF P48_ZTF-Cam 2025-09-15 10:03:48 - 2025-09-15 10:03:48 2460933.9193056 - 2460933.9193056 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
517464 2025-09-15 10:03:48 2460933.9193056 19.91 0.193275 20.2473 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
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
284656 2025-12-31 00:37:15 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 01:56:47.750 -14:30:10.30 2025-09-14 11:35:23.424 20.24 w-P1 PSN PS25hqh Pan-STARRS N
272349 2025-10-02 18:15:26 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 01:56:47.737 -14:30:10.39 2025-09-15 09:01:54.998 20.0483 r-ZTF PSN ZTF25abqzdbd ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25abqzdbd N
271209 2025-09-24 16:58:14 YSE_Bot1 D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello et al. YSE Pan-STARRS 01:56:47.753 -14:30:10.44 2025-09-23 13:17:05.856 18.29 r-P1 PSN PS25hqh Pan-STARRS N
271097 2025-09-24 00:50:33 GOTO_bot D. O'Neill, G. Ramsay, K. Ackley et al. GOTO GOTO 01:56:47.740 -14:30:10.52 2025-09-15 14:59:47.904 19.91 L-GOTO Other GOTO25hoq GOTO N
270680 2025-09-19 16:46:33 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 01:56:47.711 -14:30:10.05 2025-09-18 05:37:37.344 19.093 cyan-ATLAS PSN ATLAS25lrv ATLAS N
270493 2025-09-18 04:12:23 LAST_Bot1 E. O. Ofek (WIS), R. Konno (WIS), E. A. Zimmerman (WIS) et al. LAST LAST 01:56:47.773 -14:30:10.62 2025-09-17 23:31:12.864 19.18 Clear- PSN LAST N
270205 2025-09-15 16:37:05 ALeRCE A. Munoz-Arancibia, G. Pignata, F.E. Bauer et al. ALeRCE ZTF 01:56:47.730 -14:30:10.48 2025-09-15 09:01:54.998 20.0483 r-ZTF PSN SDSS J015647.70-143010.1 ZTF25abqzdbd 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/ZTF25abqzdbd 2025TNSTR3704....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
22109 2025-09-28 13:02:55 Jacob Wise Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (LJMU), Aleksandra Bochenek (LJMU), Zoe McGrath (LJMU) ZTF SN Ia 0.0685 1 1 ZTF Spectrum is well-fit by template spectra from previously classified SN Ia at a redshift of z = 0.0685 ± 0.0085. Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022). 2025TNSCR3901....1W
Related files
File Comments Last Modified (UT) Modified By
tns_2025xqf_atrep_22109_ZTF.pdf NGSF fits 2025-09-28 13:02:55 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
22109 2025-09-28 03:21:47 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Aleksandra Bochenek, Zoe McGrath Jacob Wise ZTF tns_2025xqf_2025-09-28_03-21-47.061_LT_SPRAT_ZTF.spec Object

Comments

TNS
System

Wed, 12/31/2025 - 00:37

Object coordinates updated

Object coordinates updated according to AT-report 284656 of Group Pan-STARRS
Previous RA, DEC: 01:56:47.753, -14:30:10.44 (29.1989719074, -14.5029000346)
Updated RA, DEC: 01:56:47.750, -14:30:10.30 (29.1989572961, -14.502861887)

TNS
System

Wed, 09/24/2025 - 16:58

Object coordinates updated

Object coordinates updated according to AT-report 271209 of Group Pan-STARRS
Previous RA, DEC: 01:56:47.730, -14:30:10.48 (29.198873128799, -14.502910130129)
Updated RA, DEC: 01:56:47.753, -14:30:10.44 (29.1989719074, -14.5029000346)