2025kkj | Transient Name Server

RA/DEC (2000)

14:51:52.579 +08:54:18.17

222.969078979 +8.90504698982

Type

TDE-featureless

Redshift

0.292

Discovery Report Classification Report

Related AstroNotes: 2025-160

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-05-09 06:55:19.004

TNS AT

Y

Public

Y

Discovery Mag

19.522

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
	21748	2025-05-23 11:20:46	Keck1 / LRIS		Stein		ZTF	tns_2025kkj_2025-05-23_11-20-46_Keck1_LRIS_ZTF_0.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
	21172	2025-05-23 11:20:46	Keck1 / LRIS		Stein		ZTF	tns_2025kkj_2025-05-23_11-20-46_Keck1_LRIS_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

w-P1

PS2_GPC2

2025-05-27 06:42:30 - 2025-05-27 06:42:30

2460822.77951 - 2460822.77951

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
495192	2025-05-27 06:42:30	2460822.77951	18.95	0.03	22	ABMag	w-P1	PS2_GPC2	45	Robot

cyan-ATLAS

ATLAS-CHL_ATLAS-04

2025-05-20 03:55:16 - 2025-05-20 03:55:16

2460815.66338 - 2460815.66338

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
489198	2025-05-20 03:55:16	2460815.66338	19.102	0.162	19.42	ABMag	cyan-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot

L-GOTO

GOTO-N_GOTO-1

2025-05-15 02:47:28 - 2025-05-16 00:36:38

2460810.616304 - 2460811.525441

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
488473	2025-05-16 00:36:38	2460811.525441	18.78	0.13		ABMag	L-GOTO	GOTO-N_GOTO-1	180
488472	2025-05-15 02:47:28	2460810.616304			18.8	ABMag	L-GOTO	GOTO-N_GOTO-1	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-05-08 10:35:46 - 2025-05-15 05:48:36

2460803.9415046 - 2460810.7420833

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
488189	2025-05-15 05:48:36	2460810.7420833	19.2963	0.125147		ABMag	r-ZTF	P48_ZTF-Cam
488187	2025-05-08 10:35:46	2460803.9415046			20.0436	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

g-ZTF

P48_ZTF-Cam

2025-05-09 06:55:19 - 2025-05-09 06:55:19

2460804.7884144 - 2460804.7884144

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
488188	2025-05-09 06:55:19	2460804.7884144	19.522	0.201598		ABMag	g-ZTF	P48_ZTF-Cam

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-05-19 12:22:33 - 2025-05-19 12:22:33

2460815.01566 - 2460815.01566

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
489197	2025-05-19 12:22:33	2460815.01566			19.22	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

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
258557	2025-06-14 20:00:54	PS1_Bot1	K. C. Chambers,T. de Boer,J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	14:51:52.579	+08:54:18.17	2025-05-27 06:42:29.664	18.95	w-P1		PSN		PS25diw	Pan-STARRS				N
255511	2025-05-20 07:37:46	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	14:51:52.560	+08:54:18.07	2025-05-20 03:55:16.032	19.102	cyan-ATLAS		PSN		ATLAS25fdd	ATLAS				N
255118	2025-05-16 12:03:02	GOTO_bot	A. Kumar,G. Ramsay,K. Ackley et al.	GOTO	GOTO	14:51:52.620	+08:54:18.31	2025-05-16 00:36:38.016	18.78	L-GOTO		Other		GOTO25cqg	GOTO				N
254993	2025-05-15 06:18:06	Fritz	Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.	ZTF	ZTF	14:51:52.596	+08:54:18.24	2025-05-09 06:55:19.004	19.522	g-ZTF		PSN		ZTF25aaptkov	ZTF			2025TNSTR1795....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

21748

2025-08-11 14:31:45

Robert Stein

R. Stein (JSI), E. Hammerstein (UC Berkeley), R. Chornock (UC Berkeley), Y. Yao (UC Berkeley), J. Carney (UNC), I. Andreoni (UNC), Xander J. Hall (CMU), K. Das (Caltech) on behalf of the ZTF AGN/TDE working group

ZTF

TDE-featureless

0.292

1

ZTF

Classification updated from TDE to TDE-featureless with same spectrum

2025TNSCR3151....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
21748	2025-05-23 11:20:46	Keck1 / LRIS		Stein		ZTF	tns_2025kkj_2025-05-23_11-20-46_Keck1_LRIS_ZTF_0.spec		Object

21172

2025-05-28 23:09:51

Robert Stein

R. Stein (JSI), E. Hammerstein (UC Berkeley), R. Chornock (UC Berkeley), Y. Yao (UC Berkeley), J. Carney (UNC), I. Andreoni (UNC), Xander J. Hall (CMU), K. Das (Caltech) on behalf of the ZTF AGN/TDE working group

ZTF

TDE

0.292

1

ZTF

2025TNSCR2011....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
21172	2025-05-23 11:20:46	Keck1 / LRIS		Stein		ZTF	tns_2025kkj_2025-05-23_11-20-46_Keck1_LRIS_ZTF.spec		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 258557 of Group Pan-STARRS
Previous RA, DEC: 14:51:52.596, +08:54:18.24 (222.9691506, +8.9050655)
Updated RA, DEC: 14:51:52.579, +08:54:18.17 (222.969078979, +8.90504698982)

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