2025yff | Transient Name Server

RA/DEC (2000)

02:25:05.482 -02:25:26.21

36.272839683 -2.42394860616

Type

SN Ia

Redshift

0.172

Discovery Report Classification Report

Reporting Group

ALeRCE

Discovering Data Source

ZTF

Discovery Date

2025-09-14 10:01:48.996

TNS AT

Y

Public

Y

Host Name

SDSS J022505.47-022526.4

Discovery Mag

20.5767

Filter

g-ZTF

Reporter/s

S. Jurado, F.E. Bauer, F. Forster, G. Pignata, A. Munoz-Arancibia, A. Mourao, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, B. Gamboa, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, E. Pizarro, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

GOTO-S_GOTO-3_L

▌

P48_ZTF-Cam_r

▌

P48_ZTF-Cam_g

▌

PS1_GPC1_r

Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)

Spectra

Select	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
	22096	2025-09-24 05:30:08	SOAR / Goodman		Jonathan Carney (UNC), Igor Andreoni (UNC)	Jonathan Carney (UNC)	ZTF	tns_2025yff_2025-09-24_05-30-08_SOAR_Goodman_ZTF.ascii		Object
Binning factor: (rounded to nearest integer >1) Mouse hovers at WL: 0 (rest), 0 (observed) ▌Show H at z=v_exp= km/s ▌Show He at z=v_exp= km/s ▌Show He II at z=v_exp= km/s ▌Show C II at z=v_exp= km/s ▌Show C III at z=v_exp= km/s ▌Show C IV at z=v_exp= km/s ▌Show N II at z=v_exp= km/s ▌Show N III at z=v_exp= km/s ▌Show N IV at z=v_exp= km/s ▌Show N V at z=v_exp= km/s ▌Show O at z=v_exp= km/s ▌Show [O I] at z=v_exp= km/s ▌Show O II at z=v_exp= km/s ▌Show [O II] at z=v_exp= km/s ▌Show [O III] at z=v_exp= km/s ▌Show O V at z=v_exp= km/s ▌Show O VI at z=v_exp= km/s ▌Show Na at z=v_exp= km/s ▌Show Mg at z=v_exp= km/s ▌Show Mg II at z=v_exp= km/s ▌Show Si II at z=v_exp= km/s ▌Show S II at z=v_exp= km/s ▌Show Ca II at z=v_exp= km/s ▌Show [Ca II] at z=v_exp= km/s ▌Show Fe II at z=v_exp= km/s ▌Show Fe III at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Tellurics ▌Show Galaxy lines at z= ▌Show WR-WN at z=v_exp= km/s ▌Show WR-WC/O at z=v_exp= km/s Remarks

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

L-GOTO

GOTO-S_GOTO-3

2025-09-13 15:51:06 - 2025-09-23 15:08:01

2460932.160494 - 2460942.130566

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
520474	2025-09-23 15:08:01	2460942.130566	20.04	0.2		ABMag	L-GOTO	GOTO-S_GOTO-3	180
520473	2025-09-13 15:51:06	2460932.160494			19.8	ABMag	L-GOTO	GOTO-S_GOTO-3	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-09-14 11:45:07 - 2025-09-20 10:15:08

2460932.9896644 - 2460938.9271759

6

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
519019	2025-09-20 10:15:08	2460938.9271759	20.2639	0.196203	20.5696	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
519018	2025-09-20 10:13:47	2460938.9262384	20.11	0.142936	20.5546	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
519017	2025-09-16 11:49:38	2460934.9928009	20.5313	0.264412	20.4004	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
519014	2025-09-15 09:35:13	2460933.899456	20.6116	0.197497	20.355	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
519013	2025-09-15 09:33:40	2460933.8983796	20.3447	0.207188	20.3668	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
519012	2025-09-14 11:45:07	2460932.9896644	20.611	0.240932	20.2424	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF

g-ZTF

P48_ZTF-Cam

2025-09-13 10:01:57 - 2025-09-21 10:04:02

2460931.9180208 - 2460939.9194676

7

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
519022	2025-09-21 10:04:02	2460939.9194676	20.0886	0.186714	20.4937	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
519021	2025-09-20 11:08:21	2460938.9641319	20.3418	0.207195	20.5942	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
519020	2025-09-20 11:06:59	2460938.9631829	20.1045	0.160701	20.5928	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
519016	2025-09-16 11:03:24	2460934.9606944	20.426	0.228127	20.4471	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
519015	2025-09-15 10:05:50	2460933.9207176	20.7015	0.339411	20.3899	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
519011	2025-09-14 10:01:49	2460932.9179282	20.5767	0.345847	20.1964	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
519010	2025-09-13 10:01:57	2460931.9180208			19.6667	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF

r-P1

PS1_GPC1

2025-09-17 13:16:42 - 2025-09-17 13:16:42

2460936.05326 - 2460936.05326

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
520460	2025-09-17 13:16:42	2460936.05326	20.4	0.17	20.6	ABMag	r-P1	PS1_GPC1	27	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
271557	2025-09-27 21:34:35	GOTO_bot	G. Ramsay, D. O'Neill, K. Ackley et al.	GOTO	GOTO	02:25:05.447	-02:25:25.66	2025-09-23 15:08:01.248	20.04	L-GOTO		Other		GOTO25hus	GOTO				N
271546	2025-09-27 20:56:39	YSE_Bot1	D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello et al.	YSE	Pan-STARRS	02:25:05.482	-02:25:26.21	2025-09-17 13:16:41.664	20.4	r-P1		PSN		PS25hqx	Pan-STARRS				N
270890	2025-09-21 15:29:43	ALeRCE	S. Jurado, F.E. Bauer, F. Forster et al.	ALeRCE	ZTF	02:25:05.474	-02:25:26.14	2025-09-14 10:01:48.996	20.5767	g-ZTF		PSN	SDSS J022505.47-022526.4	ZTF25abrmnqu	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/ZTF25abrmnqu	2025TNSTR3789....1J	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

22096

2025-09-24 16:02:01

Jonathan Carney

Jonathan Carney (UNC), Igor Andreoni (UNC), Robert Stein (UMD), Erica Hammerstein (UC Berkeley), Ryan Chornock (UC Berkeley)

ZTF

SN Ia

0.172

1

ZTF

Classification from SNID, redshift from galaxy lines

2025TNSCR3853....1C

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
22096	2025-09-24 05:30:08	SOAR / Goodman		Jonathan Carney (UNC), Igor Andreoni (UNC)	Jonathan Carney (UNC)	ZTF	tns_2025yff_2025-09-24_05-30-08_SOAR_Goodman_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 271546 of Group Pan-STARRS
Previous RA, DEC: 02:25:05.474, -02:25:26.14 (36.272809421983, -2.4239290164494)
Updated RA, DEC: 02:25:05.482, -02:25:26.21 (36.272839683, -2.42394860616)

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