2025agnp | Transient Name Server

RA/DEC (2000)

07:48:04.269 +03:43:26.55

117.017789104 +3.72404254099

Type

SN Ia

Redshift

0.0357

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-12-12 08:50:50.003

TNS AT

Y

Public

Y

Discovery Mag

19.1934

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
	22585	2025-12-13 09:01:00	Lick-3m / KAST	1800	Kyle Davis (UCSC)	Kyle Davis (UCSC)	UCSC	tns_2025agnp_2025-12-13_09-00-59.58_Lick-3m_KAST_UCSC.flm		Object			We measure a Si II absorption velocity of -14,350 km/s.
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 We measure a Si II absorption velocity of -14,350 km/s.

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

wide-ATLAS

ATLAS-TDO_ATLAS-05

2025-12-11 03:18:50 - 2025-12-11 03:18:50

2461020.63808 - 2461020.63808

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
538377	2025-12-11 03:18:50	2461020.63808			19.61	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot	[Last non detection]

L-GOTO

GOTO-S_GOTO-3

2025-12-09 14:46:52 - 2025-12-09 14:46:52

2461019.115876 - 2461019.115876

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
538820	2025-12-09 14:46:52	2461019.115876			19.2	ABMag	L-GOTO	GOTO-S_GOTO-3	90		[Last non detection]

L-GOTO

GOTO-N_GOTO-1

2025-12-11 05:15:10 - 2025-12-11 05:15:10

2461020.718859 - 2461020.718859

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
538821	2025-12-11 05:15:10	2461020.718859	19.58	0.2		ABMag	L-GOTO	GOTO-N_GOTO-1	180

r-ZTF

P48_ZTF-Cam

2025-12-12 10:29:08 - 2025-12-12 10:29:08

2461021.9368981 - 2461021.9368981

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
538056	2025-12-12 10:29:08	2461021.9368981	19.0318	0.10934		ABMag	r-ZTF	P48_ZTF-Cam

g-ZTF

P48_ZTF-Cam

2025-12-08 09:54:49 - 2025-12-12 08:50:50

2461017.9130671 - 2461021.8686343

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
538055	2025-12-12 08:50:50	2461021.8686343	19.1934	0.13419		ABMag	g-ZTF	P48_ZTF-Cam
538054	2025-12-08 09:54:49	2461017.9130671			19.9734	ABMag	g-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-12-13 12:09:43 - 2025-12-13 12:09:43

2461023.00675 - 2461023.00675

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
538378	2025-12-13 12:09:43	2461023.00675	18.995	0.14	19.61	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot

i-P1

PS1_GPC1

2026-03-04 07:19:15 - 2026-03-04 07:19:15

2461103.80503 - 2461103.80503

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
593467	2026-03-04 07:19:15	2461103.80503	19.84	0.08	20.7	ABMag	i-P1	PS1_GPC1	45	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
309374	2026-06-21 15:02:36	PS1_Bot1	K. C. Chambers, T. de Boer, J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	07:48:04.269	+03:43:26.55	2026-03-04 07:19:14.592	19.84	i-P1		PSN		PS26cfk	Pan-STARRS				N
280564	2025-12-14 17:45:20	GOTO_bot	D. O'Neill, G. Ramsay, K. Ackley et al.	GOTO	GOTO	07:48:04.275	+03:43:26.69	2025-12-11 05:15:09.504	19.58	L-GOTO		Other		GOTO25lpz	GOTO				N
280351	2025-12-13 15:37:15	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	07:48:04.259	+03:43:25.83	2025-12-13 12:09:43.200	18.995	orange-ATLAS		PSN		ATLAS25poj	ATLAS				N
280230	2025-12-12 11:10:37	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	07:48:04.265	+03:43:26.70	2025-12-12 08:50:50.003	19.1934	g-ZTF		PSN		ZTF25acgzyyt	ZTF			2025TNSTR4942....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

22584

2025-12-14 02:36:53

Kyle Davis

Kyle Davis (UCSC), Ryan Foley (UCSC)

UCSC

SN Ia

0.0357

1

UCSC

2025TNSCR4981....1D

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
22585	2025-12-13 09:01:00	Lick-3m / KAST	1800	Kyle Davis (UCSC)	Kyle Davis (UCSC)	UCSC	tns_2025agnp_2025-12-13_09-00-59.58_Lick-3m_KAST_UCSC.flm		Object			We measure a Si II absorption velocity of -14,350 km/s.

Comments

Object coordinates updated

Object coordinates updated according to AT-report 309374 of Group Pan-STARRS
Previous RA, DEC: 07:48:04.265, +03:43:26.70 (117.0177725, +3.7240844)
Updated RA, DEC: 07:48:04.269, +03:43:26.55 (117.017789104, +3.72404254099)

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