2025ahkt | Transient Name Server

RA/DEC (2000)

09:25:42.441 +22:20:05.76

141.426836087 +22.3349335633

Type

SN Ia

Redshift

0.026228

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-12-16 10:24:48.000

TNS AT

Y

Public

Y

Discovery Mag

20.6289

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
	22697	2025-12-29 06:45:34	P60 / SEDM	2160	SEDmRobot	jpurdum	ZTF	tns_2025ahkt_2025-12-29_06-45-33.714826_P60_SEDM_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
	22662	2025-12-21 19:05:07	Lijiang-2.4m / YFOSC		Jujia Zhang		LiONS	tns_2025ahkt_2025-12-21_19-05-06.502_Lijiang-2.4m_YFOSC_LiONS.dat		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

wide-ATLAS

ATLAS-TDO_ATLAS-05

2025-12-19 02:09:50 - 2025-12-19 02:09:50

2461028.59016 - 2461028.59016

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
540597	2025-12-19 02:09:50	2461028.59016	17.887	0.039	19.95	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot

L-GOTO

GOTO-N_GOTO-2

2025-12-07 02:18:03 - 2025-12-19 01:26:34

2461016.595869 - 2461028.560112

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
540680	2025-12-19 01:26:34	2461028.560112	17.92	0.05		ABMag	L-GOTO	GOTO-N_GOTO-2	180
540679	2025-12-07 02:18:03	2461016.595869			18.6	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

w-P1

PS2_GPC2

2025-12-29 10:36:44 - 2025-12-29 10:36:44

2461038.94218 - 2461038.94218

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
546960	2025-12-29 10:36:44	2461038.94218	16.29	0.01	22	ABMag	w-P1	PS2_GPC2	45	Robot

r-ZTF

P48_ZTF-Cam

2025-12-18 09:38:04 - 2025-12-18 09:38:04

2461027.9014352 - 2461027.9014352

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
540195	2025-12-18 09:38:04	2461027.9014352	18.3082	0.0788887		ABMag	r-ZTF	P48_ZTF-Cam

g-ZTF

P48_ZTF-Cam

2025-12-16 09:37:09 - 2025-12-16 10:24:48

2461025.9007986 - 2461025.9338889

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
540194	2025-12-16 10:24:48	2461025.9338889	20.6289	0.180837		ABMag	g-ZTF	P48_ZTF-Cam
540193	2025-12-16 09:37:09	2461025.9007986			20.5631	ABMag	g-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-12-17 13:07:09 - 2025-12-17 13:07:09

2461027.04663 - 2461027.04663

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
540596	2025-12-17 13:07:09	2461027.04663			19.44	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	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
285635	2026-01-02 00:17:42	PS1_Bot1	K. C. Chambers,T. de Boer,J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	09:25:42.441	+22:20:05.76	2025-12-29 10:36:44.352	16.29	w-P1		PSN		PS25mon	Pan-STARRS				N
281434	2025-12-19 10:43:03	GOTO_bot	D. O'Neill,G. Ramsay,K. Ackley et al.	GOTO	GOTO	09:25:42.434	+22:20:06.14	2025-12-19 01:26:33.504	17.92	L-GOTO		Other		GOTO25lza	GOTO				N
281394	2025-12-19 09:23:58	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland (IfA et al.	ATLAS	ATLAS	09:25:42.463	+22:20:05.64	2025-12-19 02:09:49.824	17.887	wide-ATLAS		PSN		ATLAS25pxp	ATLAS				N
281200	2025-12-18 11:11:18	Fritz	Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.	ZTF	ZTF	09:25:42.448	+22:20:05.72	2025-12-16 10:24:48.000	20.6289	g-ZTF		PSN		ZTF25acitiuq	ZTF			2025TNSTR5046....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

22696

2025-12-29 20:03:27

ZTF_Bot1

C. Fremling, D. Neill, Y. Sharma on behalf of the SEDM Team (Caltech) and the Zwicky Transient Facility (ZTF) based on SNIascore

ZTF

SN Ia

0.026228

1

ZTF

2025TNSCR5218....1F

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
22697	2025-12-29 06:45:34	P60 / SEDM	2160	SEDmRobot	jpurdum	ZTF	tns_2025ahkt_2025-12-29_06-45-33.714826_P60_SEDM_ZTF.ascii		Object

22661

2025-12-22 02:18:27

Liping Li

Liping Li, Zeyi Wang, Qian Zhai, Bo Wang, Jujia Zhang (YNAO); Xiaofeng Wang(THU)

LiONS

SN Ia-91T-like

0.026

1

LiONS

The spectrum obtained by LJT matches that of a 91T-like SN Ia (e.g., SN 2003fa at -10 days via SNID).

2025TNSCR5132....1L

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
22662	2025-12-21 19:05:07	Lijiang-2.4m / YFOSC		Jujia Zhang		LiONS	tns_2025ahkt_2025-12-21_19-05-06.502_Lijiang-2.4m_YFOSC_LiONS.dat		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 285635 of Group Pan-STARRS
Previous RA, DEC: 09:25:42.448, +22:20:05.72 (141.4268651, +22.3349232)
Updated RA, DEC: 09:25:42.441, +22:20:05.76 (141.426836087, +22.3349335633)

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