2025afhd | Transient Name Server

RA/DEC (2000)

00:53:24.099 +22:26:04.31

13.35041151 +22.43452929

Type

SN Ia

Redshift

0.0717

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-11-28 03:34:45.998

TNS AT

Y

Public

Y

Discovery Mag

20.526

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

▌

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
	22599	2025-12-17 01:56:32	P60 / SEDM	2160	SEDmRobot	auto	ZTF	tns_2025afhd_2025-12-17_01-56-32.282798_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
	22577	2025-12-13 17:55:00	BL41 / FOSC-E5535	7200	Claudio Balcon	Claudio Balcon	None	tns_2025afhd_2025-12-13_17-55-00_BL41_FOSC-E5535_None.dat	tns_2025afhd_2025-12-13_17-55-00_BL41_FOSC-E5535_None.fit	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

2025-12-05 21:16:46 - 2025-12-20 19:58:49

2461015.386641 - 2461030.332511

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
541169	2025-12-20 19:58:49	2461030.332511	18.32	0.05		ABMag	L-GOTO	GOTO-N_GOTO-2	180
541168	2025-12-05 21:16:46	2461015.386641			18.4	ABMag	L-GOTO	GOTO-N_GOTO-2	90		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-11-28 02:34:05 - 2025-11-30 02:58:50

2461007.6070023 - 2461009.6241898

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
536970	2025-11-30 02:58:50	2461009.6241898	19.5571	0.198375	19.9818	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF, classified by Fink
535085	2025-11-28 02:34:05	2461007.6070023			19.0131	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]
536969	2025-11-28 02:34:05	2461007.6070023			19.0131	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF, classified by Fink

g-ZTF

P48_ZTF-Cam

2025-11-28 03:34:46 - 2025-11-30 05:50:56

2461007.6491435 - 2461009.7437037

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
535087	2025-11-30 05:50:56	2461009.7437037	19.6263	0.173726		ABMag	g-ZTF	P48_ZTF-Cam
535086	2025-11-28 03:34:46	2461007.6491435	20.526	0.196463		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
281657	2025-12-20 21:25:56	GOTO_bot	D. O'Neill, G. Ramsay, K. Ackley et al.	GOTO	GOTO	00:53:24.102	+22:26:04.29	2025-12-20 19:58:48.864	18.32	L-GOTO		Other		GOTO25meo	GOTO				N
279759	2025-12-09 07:14:16	Fink	Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker	Fink	ZTF	00:53:24.099	+22:26:04.31	2025-11-30 02:58:49.999	19.5571	r-ZTF		PSN		ZTF25acfkgdg	ZTF		Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25acfkgdg		N
278840	2025-11-30 07:32:15	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	00:53:24.077	+22:26:04.15	2025-11-28 03:34:45.998	20.526	g-ZTF		PSN		ZTF25acfkgdg	ZTF			2025TNSTR4772....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

22598

2025-12-17 02:40:46

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

0.0717

1

ZTF

2025TNSCR5022....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
22599	2025-12-17 01:56:32	P60 / SEDM	2160	SEDmRobot	auto	ZTF	tns_2025afhd_2025-12-17_01-56-32.282798_P60_SEDM_ZTF.ascii		Object

22576

2025-12-13 19:51:07

Claudio Balcon

Claudio Balcon (Belluno A.O. ISSP)

None

SN Ia

0.07

1

GELATO Harutyunyan et al., 2008, A&A, 488, 383 (gelato@tng.iac.es) suggests that this spectrum resembles that of a type Ia supernova. The redshift has been deduced from the SN spectral fitting.

2025TNSCR4957....1B

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
22577	2025-12-13 17:55:00	BL41 / FOSC-E5535	7200	Claudio Balcon	Claudio Balcon	None	tns_2025afhd_2025-12-13_17-55-00_BL41_FOSC-E5535_None.dat	tns_2025afhd_2025-12-13_17-55-00_BL41_FOSC-E5535_None.fit	Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 279759 of Group ZTF
Previous RA, DEC: 00:53:24.077, +22:26:04.15 (13.3503228, +22.4344863)
Updated RA, DEC: 00:53:24.099, +22:26:04.31 (13.35041151, +22.43452929)

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