2025vjw | Transient Name Server

RA/DEC (2000)

23:09:00.817 -07:31:07.77

347.253405506 -7.51882497693

Type

TDE-H-He

Redshift

0.21

Discovery Report Classification Report

Related AstroNotes: 2025-276, 2025-277, 2025-292

Reporting Group

GOTO

Discovering Data Source

GOTO

Discovery Date

2025-08-24 13:54:52.128

TNS AT

Public

Discovery Mag

19.72

Filter

L-GOTO

Reporter/s

D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration

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	Remarks
	22355	2025-10-24 04:19:14	Magellan-Clay / LDSS-3		Harsh Kumar (Harvard CfA), Alex gagliano (Harvard CfA, MIT)	Harsh Kumar (CfA)	VHU-TDA	tns_2025vjw_2025-10-24_04-19-14_Magellan-Clay_LDSS-3_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
	21942	2025-08-31 02:41:13	NOT / ALFOSC		M. Pursiainen, I. Worssam	M. Pursiainen, I. Worssam	GOTO	tns_2025vjw_2025-08-31_02-41-13_NOT_ALFOSC_GOTO.dat		Object	Spectrum is a stack of 2 spectra taken on consecutive nights (obs time: 2025-08-31 02:41:13 and 2025-09-01 02:12:06.878) in order to increase SNR.
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 Spectrum is a stack of 2 spectra taken on consecutive nights (obs time: 2025-08-31 02:41:13 and 2025-09-01 02:12:06.878) in order to increase SNR.
	21927	2025-08-30 00:54:15	NOT / ALFOSC	900	Niko Pyykkinen	Panos Charalampopoulos	None	tns_2025vjw_2025-08-30_00-54-14.721_NOT_ALFOSC_None.ascii	tns_2025vjw_2025-08-30_00-54-14.721_NOT_ALFOSC_None.fits	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

2025-08-29 02:19:35 - 2025-08-29 02:19:35

2460916.59693 - 2460916.59693

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
513640	2025-08-29 02:19:35	2460916.59693	18.629	0.054	20.22	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot

Clear-

LAST_LAST-Cam

2025-09-10 18:35:31 - 2025-09-12 17:39:05

2460929.27466 - 2460931.23548

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
516617	2025-09-12 17:39:05	2460931.23548	18.31			ABMag	Clear-	LAST_LAST-Cam	400
516616	2025-09-10 18:35:31	2460929.27466			19.33	ABMag	Clear-	LAST_LAST-Cam	400		[Last non detection]

L-GOTO

GOTO-S_GOTO-3

2025-08-17 14:48:42 - 2025-08-24 13:54:52

2460905.11715 - 2460912.079774

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
512261	2025-08-24 13:54:52	2460912.079774	19.72	0.19		ABMag	L-GOTO	GOTO-S_GOTO-3	180
512260	2025-08-17 14:48:42	2460905.11715			19.8	ABMag	L-GOTO	GOTO-S_GOTO-3	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-08-22 08:37:55 - 2025-08-26 06:24:42

2460909.8596644 - 2460913.7671528

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
512406	2025-08-26 06:24:42	2460913.7671528	19.3577	0.14626		ABMag	r-ZTF	P48_ZTF-Cam
514299	2025-08-24 07:33:14	2460911.8147454	20.2361	0.231192	20.2948	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF, classified by Fink
512405	2025-08-23 06:36:21	2460910.7752431	20.4832	0.175287		ABMag	r-ZTF	P48_ZTF-Cam
514298	2025-08-23 06:36:21	2460910.7752431			20.1295	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF, classified by Fink
512404	2025-08-22 08:37:55	2460909.8596644			19.9579	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-08-24 07:12:03 - 2025-08-24 07:12:03

2460911.80003 - 2460911.80003

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
513639	2025-08-24 07:12:03	2460911.80003			19.76	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	110	Robot	[Last non detection]

w-P1

PS1_GPC1

2025-11-15 06:03:36 - 2025-11-15 06:03:36

2460994.7525 - 2460994.7525

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
551525	2025-11-15 06:03:36	2460994.7525	18.51	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	AT Type	Internal name	Assoc. Groups	Remarks	ADS Bibcode	Unreal
287868	2026-01-19 11:27:35	PS1_Bot1	K. C. Chambers, T. de Boer, J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	23:09:00.817	-07:31:07.77	2025-11-15 06:03:36.000	18.51	w-P1	PSN	PS25msz	Pan-STARRS			N
269802	2025-09-12 18:38:47	LAST_Bot1	E. O. Ofek (WIS), R. Konno (WIS), E. A. Zimmerman (WIS) et al.	LAST	LAST	23:09:00.806	-07:31:07.88	2025-09-12 17:39:05.472	18.31	Clear-	PSN		LAST			N
268673	2025-08-30 18:17:33	Fink	Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker	Fink	ZTF	23:09:00.791	-07:31:07.73	2025-08-24 07:33:14.003	20.2361	r-ZTF	PSN	ZTF25ablxhsq	ZTF	Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25ablxhsq		N
268330	2025-08-29 07:22:50	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland et al.	ATLAS	ATLAS	23:09:00.805	-07:31:07.58	2025-08-29 02:19:34.752	18.629	wide-ATLAS	PSN	ATLAS25kqo	ATLAS			N
267711	2025-08-26 07:11:43	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	23:09:00.780	-07:31:07.52	2025-08-23 06:36:21.003	20.4832	r-ZTF	PSN	ZTF25ablxhsq	ZTF			N
267626	2025-08-25 18:37:42	GOTO_bot	D. O'Neill, K. Ackley, M. Dyer et al.	GOTO	GOTO	23:09:00.800	-07:31:07.67	2025-08-24 13:54:52.128	19.72	L-GOTO	Other	GOTO25gin	GOTO		2025TNSTR3364....1O	N

Classification Reports

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

22354

2025-11-04 16:03:31

Harsh Kumar

Harsh Kumar (CfA), Alex Gagliano (CfA), Peter Blanchard (CfA), Yize Dong (CfA), Danielle Frostig (CfA), Daichi Hiramtsu (UF), Anya Nugent (CfA), Kaylee de Soto (CfA), Ashley Villar(CfA), S. Karthik Yadavalli (CfA)

VHU-TDA

TDE-H-He

0.21

VHU-TDA

Spectrum matches to TDE H + He type. A good match to recent, nearby TDE H+He 2025aarm.

2025TNSCR4441....1K

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
22355	2025-10-24 04:19:14	Magellan-Clay / LDSS-3		Harsh Kumar (Harvard CfA), Alex gagliano (Harvard CfA, MIT)	Harsh Kumar (CfA)	VHU-TDA	tns_2025vjw_2025-10-24_04-19-14_Magellan-Clay_LDSS-3_VHU-TDA.ascii		Object

21942

2025-09-01 11:00:58

David O'Neill

M. Pursiainen, I. Worssam, T. Killestein, J. Lyman, P. Charalampopoulos, D. O'Neill, K. Ackley, M. Dyer, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, A. Kumar on behalf of GOTO collaboration

GOTO

Other

0.21

GOTO

Spectrum shows a blue continuum with tentative broad features that could be H and He as well as features we identify as Ca H&K. Template matching with SNID and SNID-SAGE suggest a TDE classification at z=0.21. However, the spectrum does not have a sufficient SNR for a confident classification. Therefore we leave as Other until such a time a more secure classification is obtained. Redshift from template matching.

2025TNSCR3506....1P

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
21942	2025-08-31 02:41:13	NOT / ALFOSC		M. Pursiainen, I. Worssam	M. Pursiainen, I. Worssam	GOTO	tns_2025vjw_2025-08-31_02-41-13_NOT_ALFOSC_GOTO.dat		Object			Spectrum is a stack of 2 spectra taken on consecutive nights (obs time: 2025-08-31 02:41:13 and 2025-09-01 02:12:06.878) in order to increase SNR.

21927

2025-08-30 16:51:00

Panos Charalampopoulos

Panos Charalampopoulos (UTU)

None

Other

0.068

We present a NOT/ALFOSC optical spectrum of the rising optical transient AT 2025vjw located in the nucleus of its host galaxy. The spectrum is blue and featureless. There are no evident host galaxy lines and no spectroscopic redshift for the host. At a redshift of z~0.068, we tentatively identify some galaxy lines and a broad and shallow He II 4686 (see Body) but the identification is not robust. At this redshift, the latest g-band absolute magnitude (corrected for MW extinction; A_V = 0.124) is M = –19.2. Based on the spectra, the location of the transient, the absolute magnitude and its persistent blue optical colours (g-r = -(0.3-0.4)), it is possible that AT 2025jvw is a tidal disruption event, however a (superluminous) supernova cannot be ruled-out yet. Further follow-up to determine the nature of the transient is encouraged. Until then, we classify the transient as "Other".

2025TNSCR3466....1C

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
21927	2025-08-30 00:54:15	NOT / ALFOSC	900	Niko Pyykkinen	Panos Charalampopoulos	None	tns_2025vjw_2025-08-30_00-54-14.721_NOT_ALFOSC_None.ascii	tns_2025vjw_2025-08-30_00-54-14.721_NOT_ALFOSC_None.fits	Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 287868 of Group Pan-STARRS
Previous RA, DEC: 23:09:00.791, -07:31:07.73 (347.25329742667, -7.5188137066667)
Updated RA, DEC: 23:09:00.817, -07:31:07.77 (347.253405506, -7.51882497693)

Object coordinates updated

Object coordinates updated according to AT-report 268673 of Group ZTF
Previous RA, DEC: 23:09:00.780, -07:31:07.52 (347.2532513, -7.5187562)
Updated RA, DEC: 23:09:00.791, -07:31:07.73 (347.25329742667, -7.5188137066667)

Object coordinates updated

Object coordinates updated according to AT-report 267711 of Group ZTF
Previous RA, DEC: 23:09:00.800, -07:31:07.67 (347.253332, -7.518796)
Updated RA, DEC: 23:09:00.780, -07:31:07.52 (347.2532513, -7.5187562)

TDE 2025vjw

Spectra

Light curves

Comments

Object coordinates updated

Object coordinates updated

Object coordinates updated