2025aaxv | Transient Name Server

RA/DEC (2000)

12:16:47.987 +30:21:57.73

184.19994545 +30.3660361964

Type

SN Ia-CSM

Redshift

0.079787

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-10-19 12:53:14.000

TNS AT

Y

Public

Y

Discovery Mag

19.062

Filter

r-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
	22807	2026-01-14 10:10:22	Lick-3m / KAST		Jacob Wise (LJMU) Christian Tapper (UCLA), Emily Elien (UCLA) R. Michael Rich (UCLA)	Zoë McGrath (LJMU), Jacob Wise (LJMU)	ZTF	tns_2025aaxv_2026-01-14_10-10-22_Lick-3m_KAST_ZTF.txt		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

2025-06-26 21:30:57 - 2025-11-11 05:41:57

2460853.396488 - 2460990.737463

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
534900	2025-11-11 05:41:57	2460990.737463	19.04	0.1		ABMag	L-GOTO	GOTO-N_GOTO-2	360
534899	2025-06-26 21:30:57	2460853.396488			19.5	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-10-18 13:03:14 - 2025-10-19 13:00:28

2460967.043912 - 2460968.0419907

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
524999	2025-10-19 13:00:28	2460968.0419907	19.0125	0.209477		ABMag	r-ZTF	P48_ZTF-Cam
524998	2025-10-19 12:53:14	2460968.0369676	19.062	0.179952		ABMag	r-ZTF	P48_ZTF-Cam
524997	2025-10-18 13:03:14	2460967.043912			18.2822	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-11-11 15:29:56 - 2025-11-11 15:29:56

2460991.14579 - 2460991.14579

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
531659	2025-11-11 15:29:56	2460991.14579			18.54	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot	[Last non detection]

cyan-ATLAS

ATLAS-HKO_ATLAS-02

2025-11-16 15:10:27 - 2025-11-16 15:10:27

2460996.13226 - 2460996.13226

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
531660	2025-11-16 15:10:27	2460996.13226	19.054	0.155	19.3	ABMag	cyan-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot

i-P1

PS1_GPC1

2025-12-08 14:18:40 - 2025-12-08 14:18:40

2461018.0963 - 2461018.0963

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
545515	2025-12-08 14:18:40	2461018.0963	18.68	0.08	20.7	ABMag	i-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
284270	2025-12-30 21:19:26	PS1_Bot1	K. C. Chambers,T. de Boer,J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	12:16:47.987	+30:21:57.73	2025-12-08 14:18:40.320	18.68	i-P1		PSN		PS25ktw	Pan-STARRS				N
278765	2025-11-29 21:18:23	GOTO_bot	D. O'Neill,K. Ackley,M. Dyer et al.	GOTO	GOTO	12:16:47.982	+30:21:58.07	2025-11-11 05:41:56.544	19.04	L-GOTO		Other		GOTO25ktv	GOTO				N
277178	2025-11-17 11:14:41	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	12:16:47.989	+30:21:57.83	2025-11-16 15:10:27.264	19.054	cyan-ATLAS		PSN		ATLAS25ohd	ATLAS				N
273974	2025-10-19 19:16:08	Fritz	Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.	ZTF	ZTF	12:16:47.981	+30:21:57.88	2025-10-19 12:53:14.000	19.062	r-ZTF		PSN		ZTF18aaisaqo	ZTF			2025TNSTR4191....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

22806

2026-01-19 16:02:51

Zoë McGrath

Jacob Wise (LJMU) Zoë McGrath (LJMU), Aleksandra Bochenek (LJMU), R. Michael Rich (UCLA), Christian Tapper (UCLA), Emily Elien (UCLA)

ZTF

SN Ia-CSM

0.079787

1

1

ZTF

We classify this object as an SN Ia-CSM at redshift 0.079787 ± 0.000024. Redshift determined using SDSS DR13. This object is well-fit to SN 2012ca, which showed very little spectroscopic evolution throughout its lifetime (Inserra et al. 2016) Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022).

2026TNSCR.240....1W

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2025aaxv_atrep_22806_ZTF.pdf	NGSF fit for AT 2025aaxv.	2026-01-19 16:02:52	Zoë McGrath

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
22807	2026-01-14 10:10:22	Lick-3m / KAST		Jacob Wise (LJMU) Christian Tapper (UCLA), Emily Elien (UCLA) R. Michael Rich (UCLA)	Zoë McGrath (LJMU), Jacob Wise (LJMU)	ZTF	tns_2025aaxv_2026-01-14_10-10-22_Lick-3m_KAST_ZTF.txt		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 284270 of Group Pan-STARRS
Previous RA, DEC: 12:16:47.981, +30:21:57.88 (184.1999228, +30.3660787)
Updated RA, DEC: 12:16:47.987, +30:21:57.73 (184.19994545, +30.3660361964)

Log in or register to post comments

Log in or register to post comments