2025axn | Transient Name Server

RA/DEC (2000)

02:04:03.055 -12:52:36.02

31.0127304579 -12.8766735559

Type

SN IIn

Redshift

0.0965

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-01-31 03:06:11.001

TNS AT

Y

Public

Y

Discovery Mag

19.045

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
	21813	2025-08-17 04:43:03	LT / SPRAT		Jacob Wise, Daniel Perley, K-Ryan Hinds, Zoe McGrath	Jacob Wise	ZTF	tns_2025axn_2025-08-17_04-43-02.851_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

2025-01-16 21:03:41 - 2025-01-27 20:17:36

2460692.377564 - 2460703.345549

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
497377	2025-01-27 20:17:36	2460703.345549	19.52	0.21		ABMag	L-GOTO	GOTO-N_GOTO-2	180
497376	2025-01-16 21:03:41	2460692.377564			19.7	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

orange-ATLAS

ATLAS-CHL_ATLAS-04

2025-02-13 01:33:09 - 2025-02-13 01:33:09

2460719.56469 - 2460719.56469

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
468569	2025-02-13 01:33:09	2460719.56469			18.12	ABMag	orange-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot	[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-02-05 03:28:51 - 2025-02-05 03:28:51

2460711.6450347 - 2460711.6450347

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
467047	2025-02-05 03:28:51	2460711.6450347	18.7815	0.120759		ABMag	r-ZTF	P48_ZTF-Cam

g-ZTF

P48_ZTF-Cam

2025-01-24 04:03:42 - 2025-01-31 03:06:11

2460699.6692361 - 2460706.629294

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
467046	2025-01-31 03:06:11	2460706.629294	19.045	0.096975		ABMag	g-ZTF	P48_ZTF-Cam
467045	2025-01-24 04:03:42	2460699.6692361			19.0877	ABMag	g-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-02-14 05:24:53 - 2025-02-14 05:24:53

2460720.72561 - 2460720.72561

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
468570	2025-02-14 05:24:53	2460720.72561	18.821	0.191	19.08	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot

w-P1

PS1_GPC1

2025-08-26 13:25:01 - 2025-08-26 13:25:01

2460914.05904 - 2460914.05904

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
514283	2025-08-26 13:25:01	2460914.05904	19.09	0.03	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
268661	2025-08-30 17:40:56	PS1_Bot1	K. C. Chambers, T. de Boer, J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	02:04:03.055	-12:52:36.02	2025-08-26 13:25:01.056	19.09	w-P1		PSN		PS25hgn	Pan-STARRS				N
259644	2025-06-21 21:42:34	GOTO_bot	D. O'Neill, K. Ackley, M. Dyer et al.	GOTO	GOTO	02:04:03.051	-12:52:36.17	2025-01-27 20:17:35.520	19.52	L-GOTO		Other		GOTO25dzk	GOTO				N
244365	2025-02-14 09:33:40	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland et al.	ATLAS	ATLAS	02:04:03.042	-12:52:36.42	2025-02-14 05:24:52.704	18.821	orange-ATLAS		PSN		ATLAS25bom	ATLAS				N
243526	2025-02-05 05:31:33	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	02:04:03.062	-12:52:36.05	2025-01-31 03:06:11.001	19.045	g-ZTF		PSN		ZTF25aadhpuz	ZTF			2025TNSTR.502....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

21813

2025-08-18 12:24:16

Jacob Wise

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

ZTF

SN IIn

0.0965

1

ZTF

Spectrum displays broad H-alpha and H-beta in emission, at >200 days post-first detection this is consistent with a SN IIn. Redshift obtained using narrow host H-alpha emission.

2025TNSCR3272....1W

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
21813	2025-08-17 04:43:03	LT / SPRAT		Jacob Wise, Daniel Perley, K-Ryan Hinds, Zoe McGrath	Jacob Wise	ZTF	tns_2025axn_2025-08-17_04-43-02.851_LT_SPRAT_ZTF.spec		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 268661 of Group Pan-STARRS
Previous RA, DEC: 02:04:03.062, -12:52:36.05 (31.0127579, -12.8766801)
Updated RA, DEC: 02:04:03.055, -12:52:36.02 (31.0127304579, -12.8766735559)

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