2025vqu | Transient Name Server

RA/DEC (2000)

18:37:16.811 +32:29:18.34

279.32004696667 +32.488427388889

Type

SN Ia

Redshift

0.0745

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-08-27 05:03:36.999

TNS AT

Y

Public

Y

Discovery Mag

19.3481

Filter

r-ZTF

Reporter/s

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

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

GOTO-N_GOTO-2_L

▌

P48_ZTF-Cam_r

▌

P48_ZTF-Cam_g

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
	21973	2025-09-05 21:19:58	LT / SPRAT		Jacob Wise, Daniel Perley, K-Ryan Hinds, Zoe McGrath	Jacob Wise	ZTF	tns_2025vqu_2025-09-05_21-19-57.788_LT_SPRAT_ZTF.spec		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-N_GOTO-2

2025-07-24 02:25:52 - 2025-08-31 01:43:19

2460880.601302 - 2460918.571748

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
514471	2025-08-31 01:43:19	2460918.571748	18.86	0.05		ABMag	L-GOTO	GOTO-N_GOTO-2	360
514470	2025-07-24 02:25:52	2460880.601302			19.4	ABMag	L-GOTO	GOTO-N_GOTO-2	360		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-08-23 07:19:14 - 2025-08-27 05:03:37

2460910.8050231 - 2460914.7108449

4

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
512919	2025-08-27 05:03:37	2460914.7108449	19.3481	0.120209		ABMag	r-ZTF	P48_ZTF-Cam
515766	2025-08-27 05:03:37	2460914.7108449	19.3481	0.120209	20.826	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF, classified by Fink
512918	2025-08-23 07:19:14	2460910.8050231			20.2581	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]
515765	2025-08-23 07:19:14	2460910.8050231			20.2581	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF, classified by Fink

g-ZTF

P48_ZTF-Cam

2025-08-27 06:46:23 - 2025-08-27 06:46:23

2460914.7822106 - 2460914.7822106

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
512920	2025-08-27 06:46:23	2460914.7822106	19.4494	0.099322		ABMag	g-ZTF	P48_ZTF-Cam

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
269376	2025-09-05 18:15:27	Fink	Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al.	Fink	ZTF	18:37:16.811	+32:29:18.34	2025-08-27 05:03:36.999	19.3481	r-ZTF		PSN		ZTF25abmhxft	ZTF		Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25abmhxft		N
268731	2025-08-31 08:30:10	GOTO_bot	M. Pursiainen,G. Ramsay,K. Ackley et al.	GOTO	GOTO	18:37:16.803	+32:29:18.39	2025-08-31 01:43:19.200	18.86	L-GOTO		Other		GOTO25goo	GOTO				N
267921	2025-08-27 20:17:47	Fritz	Daniel Perley (LJMU),Christoffer Fremling (Caltech),Theophile du Laz (Caltech) on behalf of ZTF et al.	ZTF	ZTF	18:37:16.804	+32:29:18.00	2025-08-27 05:03:36.999	19.3481	r-ZTF		PSN		ZTF25abmhxft	ZTF			2025TNSTR3395....1P	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

21973

2025-09-06 08:29:34

Jacob Wise

Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (LJMU), Zoe McGrath (LJMU)

ZTF

SN Ia

0.0745

1

1

ZTF

Spectrum is well-fit to template spectra from previously classified SN Ia-norm events. Redshift of z = 0.0745 ± 0.0005 from faint host H-alpha emission. Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022).

2025TNSCR3596....1W

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2025vqu_atrep_21973_ZTF.pdf	NGSF fits	2025-09-06 08:29:35	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
21973	2025-09-05 21:19:58	LT / SPRAT		Jacob Wise, Daniel Perley, K-Ryan Hinds, Zoe McGrath	Jacob Wise	ZTF	tns_2025vqu_2025-09-05_21-19-57.788_LT_SPRAT_ZTF.spec		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 269376 of Group ZTF
Previous RA, DEC: 18:37:16.804, +32:29:18.00 (279.3200179, +32.488333)
Updated RA, DEC: 18:37:16.811, +32:29:18.34 (279.32004696667, +32.488427388889)

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