2025aaxz | Transient Name Server

RA/DEC (2000)

09:44:34.866 +55:45:43.41

146.145274823 +55.7620572281

Type

SN II

Redshift

0.025

Discovery Report Classification Report

Related AstroNotes: DRAFT-2349, 2025-332

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-10-19 10:20:46.003

TNS AT

Y

Public

Y

Discovery Mag

18.9293

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
	22484	2025-11-23 00:00:00	FLWO-1.5m / FAST	1500	Gilbert Esquerdo, Perry Berlind	S. Karthik Yadavalli, Harsh Kumar	VHU-TDA	tns_2025aaxz_2025-11-23_FLWO-1.5m_FAST_VHU-TDA.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
	22289	2025-10-25 10:50:04	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2025aaxz_2025-10-25_10-50-03.588991_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

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

wide-ATLAS

ATLAS-TDO_ATLAS-05

2025-10-13 05:28:51 - 2025-10-13 05:28:51

2460961.72837 - 2460961.72837

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
525668	2025-10-13 05:28:51	2460961.72837			19.39	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot	[Last non detection]

r-WFST

WFST_WFST-WFC

2025-11-11 22:01:55 - 2025-11-11 22:01:55

2460991.418 - 2460991.418

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
531894	2025-11-11 22:01:55	2460991.418	18.31	0.01		ABMag	r-WFST	WFST_WFST-WFC	30

Clear-

LAST_LAST-Cam

2024-03-04 00:21:21 - 2025-11-28 01:15:00

2460373.51483 - 2461007.55208

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
534329	2025-11-28 01:15:00	2461007.55208	18.89			ABMag	Clear-	LAST_LAST-Cam	400
534328	2024-03-04 00:21:21	2460373.51483			21.14	ABMag	Clear-	LAST_LAST-Cam	4400		[Last non detection]

w-P1

PS2_GPC2

2025-12-15 14:38:44 - 2025-12-15 14:38:44

2461025.11023 - 2461025.11023

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
539496	2025-12-15 14:38:44	2461025.11023	18.74	0.02	22	ABMag	w-P1	PS2_GPC2	45	Robot

g-ZTF

P48_ZTF-Cam

2025-10-18 12:18:14 - 2025-10-19 10:20:46

2460967.012662 - 2460967.931088

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
525009	2025-10-19 10:20:46	2460967.931088	18.9293	0.0915575		ABMag	g-ZTF	P48_ZTF-Cam
525008	2025-10-18 12:18:14	2460967.012662			20.2137	ABMag	g-ZTF	P48_ZTF-Cam			[Last non detection]

cyan-ATLAS

ATLAS-MLO_ATLAS-01

2025-10-21 14:49:28 - 2025-10-21 14:49:28

2460970.11769 - 2460970.11769

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
525669	2025-10-21 14:49:28	2460970.11769	18.592	0.104	19.5	ABMag	cyan-ATLAS	ATLAS-MLO_ATLAS-01	30	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
280892	2025-12-17 00:22:46	PS1_Bot1	K. C. Chambers,T. de Boer,J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	09:44:34.866	+55:45:43.41	2025-12-15 14:38:43.872	18.74	w-P1		PSN		PS25iqw	Pan-STARRS				N
278511	2025-11-28 05:09:20	LAST_Bot1	E. O. Ofek (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al.	LAST	LAST	09:44:34.860	+55:45:42.96	2025-11-28 01:14:59.712	18.89	Clear-		PSN			LAST				N
277299	2025-11-17 15:05:22	WFST_SN	Zelin Xu,Dezheng Meng,Ji-an Jiang et al.	WFST	WFST	09:44:34.860	+55:45:43.47	2025-11-11 22:01:55.200	18.31	r-WFST		PSN		WFST-GW251111epawv	WFST				N
274254	2025-10-21 17:25:26	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	09:44:34.830	+55:45:43.52	2025-10-21 14:49:28.416	18.592	cyan-ATLAS		PSN		ATLAS25nbo	ATLAS				N
273978	2025-10-19 19:28:11	Fritz	Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.	ZTF	ZTF	09:44:34.863	+55:45:43.55	2025-10-19 10:20:46.003	18.9293	g-ZTF		PSN		ZTF25abxxkod	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

22483

2025-12-02 01:18:29

VHU-TDA

Yize Dong, Anya Nugent, V. Ashley Villar, S. Karthik Yadavalli, Alex Gagliano, Kaylee de Soto, Danielle Frostig, Harsh Kumar, Peter Blanchard

VHU-TDA

SN II

0.025

1

1

VHU-TDA

redshift measured from the narrow host lines

2025TNSCR4810....1D

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2025aaxz_atrep_22483_VHU-TDA.png	likely a Type IIP from the template match	2025-12-02 01:18:31	VHU-TDA

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
22484	2025-11-23 00:00:00	FLWO-1.5m / FAST	1500	Gilbert Esquerdo, Perry Berlind	S. Karthik Yadavalli, Harsh Kumar	VHU-TDA	tns_2025aaxz_2025-11-23_FLWO-1.5m_FAST_VHU-TDA.ascii		Object

22289

2025-10-25 12:32:45

ZTF_Bot1

J. Sollerman, S. Covarrubias, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF)

ZTF

SN II

0.025443

1

ZTF

2025TNSCR4294....1S

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
22289	2025-10-25 10:50:04	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2025aaxz_2025-10-25_10-50-03.588991_P60_SEDM_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 280892 of Group Pan-STARRS
Previous RA, DEC: 09:44:34.863, +55:45:43.55 (146.1452614, +55.762097)
Updated RA, DEC: 09:44:34.866, +55:45:43.41 (146.145274823, +55.7620572281)

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