2025txy | Transient Name Server

RA/DEC (2000)

01:28:28.504 -13:34:03.87

22.1187678553 -13.567740372

Type

SN Ia

Redshift

0.1

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-08-13 08:59:11.996

TNS AT

Y

Public

Y

Discovery Mag

19.1762

Filter

g-ZTF

Reporter/s

Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

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
	21911	2025-08-29 00:00:00	Lick-3m / KAST		Ravjit Kaur		UCSC	tns_2025txy_2025-08-29_Lick-3m_KAST_UCSC.flm		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

2025-08-17 16:34:02 - 2025-08-17 16:34:02

2460905.190296 - 2460905.190296

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
509719	2025-08-17 16:34:02	2460905.190296	19.16	0.11		ABMag	L-GOTO	GOTO-S_GOTO-3	180

orange-ATLAS

ATLAS-CHL_ATLAS-04

2025-08-17 05:59:57 - 2025-08-17 05:59:57

2460904.74997 - 2460904.74997

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
510811	2025-08-17 05:59:57	2460904.74997			19.84	ABMag	orange-ATLAS	ATLAS-CHL_ATLAS-04	110	Robot	[Last non detection]

orange-ATLAS

ATLAS-STH_ATLAS-03

2025-08-18 01:15:22 - 2025-08-18 01:15:22

2460905.55234 - 2460905.55234

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
510812	2025-08-18 01:15:22	2460905.55234	19.247	0.132	20.35	ABMag	orange-ATLAS	ATLAS-STH_ATLAS-03	110	Robot

L-GOTO

GOTO-N_GOTO-1

2025-08-12 04:26:38 - 2025-08-12 04:26:38

2460899.685156 - 2460899.685156

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
509718	2025-08-12 04:26:38	2460899.685156			17.5	ABMag	L-GOTO	GOTO-N_GOTO-1	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-08-02 10:18:24 - 2025-08-02 10:18:24

2460889.9294444 - 2460889.9294444

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
508985	2025-08-02 10:18:24	2460889.9294444			20.7879	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

g-ZTF

P48_ZTF-Cam

2025-08-13 08:59:12 - 2025-08-15 10:34:25

2460900.8744444 - 2460902.9405671

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
508987	2025-08-15 10:34:25	2460902.9405671	19.1603	0.15179		ABMag	g-ZTF	P48_ZTF-Cam
508986	2025-08-13 08:59:12	2460900.8744444	19.1762	0.212916		ABMag	g-ZTF	P48_ZTF-Cam

i-P1

PS1_GPC1

2025-08-25 13:42:16 - 2025-08-25 13:42:16

2460913.07102 - 2460913.07102

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
512273	2025-08-25 13:42:16	2460913.07102	19.53	0.12	20.7	ABMag	i-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
267633	2025-08-25 19:09:07	YSE_Bot1	D. O. Jones (UC Santa Cruz),K. D. French (Carnegie,Illinois) et al.	YSE	Pan-STARRS	01:28:28.504	-13:34:03.87	2025-08-25 13:42:16.128	19.53	i-P1		PSN		PS25haj	Pan-STARRS				N
266872	2025-08-21 08:30:01	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	01:28:28.518	-13:34:03.78	2025-08-18 01:15:22.176	19.247	orange-ATLAS		PSN		ATLAS25kbu	ATLAS				N
266266	2025-08-17 17:36:18	GOTO_bot	D. O'Neill,K. Ackley,M. Dyer et al.	GOTO	GOTO	01:28:28.471	-13:34:04.72	2025-08-17 16:34:01.920	19.16	L-GOTO		Other		GOTO25fwx	GOTO				N
265930	2025-08-15 11:19:15	Fritz	Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.	ZTF	ZTF	01:28:28.507	-13:34:03.48	2025-08-13 08:59:11.996	19.1762	g-ZTF		PSN		ZTF25abijzcu	ZTF			2025TNSTR3216....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

21911

2025-08-29 21:33:46

Ravjit Kaur

Ravjit Kaur (UCSC), Ryan Foley (UCSC), Kyle Davis (UCSC)

UCSC

SN Ia

0.1

1

UCSC

When the redshift is given to 2 decimal places, it is derived from the SN spectrum. Otherwise, the redshift is determined from the host galaxy. We measure a Si II 6355 absorption velocity of -14,000 km/s.

2025TNSCR3450....1K

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
21911	2025-08-29 00:00:00	Lick-3m / KAST		Ravjit Kaur		UCSC	tns_2025txy_2025-08-29_Lick-3m_KAST_UCSC.flm		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 267633 of Group Pan-STARRS
Previous RA, DEC: 01:28:28.507, -13:34:03.48 (22.1187793, -13.5676344)
Updated RA, DEC: 01:28:28.504, -13:34:03.87 (22.1187678553, -13.567740372)

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