2025acj | Transient Name Server

RA/DEC (2000)

13:02:09.550 +03:06:15.01

195.539789938 +3.10416814307

Type

SN Ia

Redshift

0.04712

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-01-24 09:44:15.996

TNS AT

Y

Public

Y

Discovery Mag

18.2802

Filter

g-ZTF

Reporter/s

Nabeel Rehemtulla (CIERA, NU), 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
	20269	2025-01-29 02:52:48	LT / SPRAT		Chris Frohmaier	Chris Frohmaier, Miika Pursiainen	None	tns_2025acj_2460704.62_LT_SPRAT_None.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

r-WFST

WFST_WFST-WFC

2025-02-08 21:34:34 - 2025-02-08 21:34:34

2460715.399 - 2460715.399

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
475017	2025-02-08 21:34:34	2460715.399			21.64	ABMag	r-WFST	WFST_WFST-WFC	50		[Last non detection]

g-WFST

WFST_WFST-WFC

2025-02-17 19:00:29 - 2025-02-17 19:00:29

2460724.292 - 2460724.292

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
475018	2025-02-17 19:00:29	2460724.292	18.95	0.07		ABMag	g-WFST	WFST_WFST-WFC	90

L-GOTO

GOTO-N_GOTO-2

2025-01-18 03:42:14 - 2025-01-18 03:42:14

2460693.654332 - 2460693.654332

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
464444	2025-01-18 03:42:14	2460693.654332			17.3	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

orange-ATLAS

ATLAS-CHL_ATLAS-04

2025-01-24 07:26:19 - 2025-01-24 07:26:19

2460699.80994 - 2460699.80994

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
464559	2025-01-24 07:26:19	2460699.80994	18.537	0.143	19.21	ABMag	orange-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot

L-GOTO

GOTO-N_GOTO-1

2025-01-25 03:17:20 - 2025-01-25 03:17:20

2460700.637037 - 2460700.637037

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
464445	2025-01-25 03:17:20	2460700.637037	18.33	0.1		ABMag	L-GOTO	GOTO-N_GOTO-1	180

g-ZTF

P48_ZTF-Cam

2025-01-22 12:40:38 - 2025-01-24 10:38:33

2460698.0282176 - 2460699.9434375

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
464297	2025-01-24 10:38:33	2460699.9434375	18.2348	0.0587188		ABMag	g-ZTF	P48_ZTF-Cam
464296	2025-01-24 09:44:16	2460699.9057407	18.2802	0.0958606		ABMag	g-ZTF	P48_ZTF-Cam
464295	2025-01-22 12:40:38	2460698.0282176			17.4333	ABMag	g-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-01-23 15:53:52 - 2025-01-23 15:53:52

2460699.16241 - 2460699.16241

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
464558	2025-01-23 15:53:52	2460699.16241			19.34	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

w-P1

PS1_GPC1

2025-02-05 13:54:40 - 2025-02-05 13:54:40

2460712.07963 - 2460712.07963

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
467543	2025-02-05 13:54:40	2460712.07963	17.81	0.01	22	ABMag	w-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
247742	2025-03-12 09:40:20	WFST_SN	Zelin Xu, Dezheng Meng, Ji-an Jiang et al.	WFST	WFST	13:02:09.550	+03:06:14.95	2025-02-17 19:00:28.800	18.95	g-WFST		PSN		WFST0510xkc	WFST				N
243837	2025-02-09 10:45:03	PS1_Bot1	K. C. Chambers, T. de Boer, J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	13:02:09.550	+03:06:15.01	2025-02-05 13:54:40.032	17.81	w-P1		PSN		PS25pp	Pan-STARRS				N
242403	2025-01-25 17:21:23	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland et al.	ATLAS	ATLAS	13:02:09.557	+03:06:14.98	2025-01-24 07:26:18.816	18.537	orange-ATLAS		PSN		ATLAS25awq	ATLAS				N
242343	2025-01-25 10:06:21	GOTO_bot	D. O'Neill, K. Ackley, M. Dyer et al.	GOTO	GOTO	13:02:09.554	+03:06:15.39	2025-01-25 03:17:20.256	18.33	L-GOTO		Other		GOTO25nk	GOTO				N
242274	2025-01-24 10:48:59	Fritz	Nabeel Rehemtulla (CIERA, NU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	13:02:09.560	+03:06:14.95	2025-01-24 09:44:15.996	18.2802	g-ZTF		PSN		ZTF25aaddjmx	ZTF		Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167).	2025TNSTR.336....1R	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

20269

2025-01-29 15:52:20

Christopher Frohmaier

Christopher Frohmaier (University of Southampton), Miika Pursiainen (University of Warwick), Edward Charleton (University of Southampton)

None

SN Ia

0.04712

1

Classified by SNID as a type Ia SN at peak. Redshift taken from host galaxy in SDSS. Observations were performed on 28th January 2025 with the Liverpool Telescope using SPRAT. Data were reduced using a custom PypeIt setup and classification was performed with SNID (Blondin & Tonry 2007 2007ApJ...666.1024).

2025TNSCR.409....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
20269	2025-01-29 02:52:48	LT / SPRAT		Chris Frohmaier	Chris Frohmaier, Miika Pursiainen	None	tns_2025acj_2460704.62_LT_SPRAT_None.dat		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 243837 of Group Pan-STARRS
Previous RA, DEC: 13:02:09.560, +03:06:14.95 (195.5398341, +3.1041519)
Updated RA, DEC: 13:02:09.550, +03:06:15.01 (195.539789938, 3.10416814307)

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