2025qkn | Transient Name Server

RA/DEC (2000)

02:44:01.265 +05:25:51.97

41.0052705072 +5.43110398258

Type

SN II

Redshift

0.024157

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-06-30 11:29:13.001

TNS AT

Y

Public

Y

Discovery Mag

17.3232

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
	21480	2025-07-06 10:45:45	P60 / SEDM	2160	SEDmRobot	auto	ZTF	tns_2025qkn_2025-07-06_10-45-45.189583_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

Clear-

LAST_LAST-Cam

2024-11-28 18:10:13 - 2025-09-02 01:48:04

2460643.2571 - 2460920.57505

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
515017	2025-09-02 01:48:04	2460920.57505	18.85			ABMag	Clear-	LAST_LAST-Cam	400
515016	2024-11-28 18:10:13	2460643.2571			21.13	ABMag	Clear-	LAST_LAST-Cam	400		[Last non detection]

L-GOTO

GOTO-N_GOTO-2

2025-02-22 20:25:57 - 2025-02-22 20:25:57

2460729.351352 - 2460729.351352

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
501521	2025-02-22 20:25:57	2460729.351352			18.3	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

w-P1

PS2_GPC2

2025-08-25 13:35:26 - 2025-08-25 13:35:26

2460913.06627 - 2460913.06627

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
513940	2025-08-25 13:35:26	2460913.06627	18.04	0.01	22	ABMag	w-P1	PS2_GPC2	45	Robot

orange-ATLAS

ATLAS-CHL_ATLAS-04

2025-07-03 10:26:57 - 2025-07-07 08:54:24

2460859.93538 - 2460863.87111

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
501257	2025-07-07 08:54:24	2460863.87111	17.382	0.067	18.61	ABMag	orange-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot
501256	2025-07-03 10:26:57	2460859.93538			18.8	ABMag	orange-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot	[Last non detection]

L-GOTO

GOTO-N_GOTO-1

2025-07-09 04:52:26 - 2025-07-09 04:52:26

2460865.703079 - 2460865.703079

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
501522	2025-07-09 04:52:26	2460865.703079	17.54	0.06		ABMag	L-GOTO	GOTO-N_GOTO-1	180

BG-q-BlackGem

BG4_BlackGEM-Cam4

2025-01-07 01:17:49 - 2025-07-22 08:46:07

2460682.5540394 - 2460878.8653588

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
504230	2025-07-22 08:46:07	2460878.8653588	17.87	0.03	20.66	ABMag	BG-q-BlackGem	BG4_BlackGEM-Cam4	60	robotic
504229	2025-01-07 01:17:49	2460682.5540394			20.53	ABMag	BG-q-BlackGem	BG4_BlackGEM-Cam4	60	robotic	[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-06-30 11:23:40 - 2025-07-05 11:30:22

2460856.9747685 - 2460861.9794213

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
501019	2025-07-05 11:30:22	2460861.9794213	17.2346	0.0607204		ABMag	r-ZTF	P48_ZTF-Cam
501018	2025-06-30 11:29:13	2460856.9786227	17.3232	0.0252672		ABMag	r-ZTF	P48_ZTF-Cam
501017	2025-06-30 11:23:40	2460856.9747685			19.4509	ABMag	r-ZTF	P48_ZTF-Cam			[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
269030	2025-09-02 04:03:05	LAST_Bot1	E. O. Ofek (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al.	LAST	LAST	02:44:01.309	+05:25:51.63	2025-09-02 01:48:04.320	18.85	Clear-		PSN			LAST				N
268483	2025-08-29 19:34:29	PS1_Bot1	K. C. Chambers,T. de Boer,J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	02:44:01.265	+05:25:51.97	2025-08-25 13:35:25.728	18.04	w-P1		PSN		PS25hei	Pan-STARRS				N
263395	2025-07-22 12:31:02	BlackGEM_Bot1	P. Groot,H. Tranin,F. Stoppa et al.	BlackGEM	BlackGEM	02:44:01.248	+05:25:51.82	2025-07-22 08:46:07.000	17.87	BG-q-BlackGem		PSN		BGEM J024401.24+052551.8	BlackGEM				N
261886	2025-07-09 09:26:41	GOTO_bot	D. O'Neill,K. Ackley,M. Dyer et al.	GOTO	GOTO	02:44:01.261	+05:25:52.27	2025-07-09 04:52:26.112	17.54	L-GOTO		Other		GOTO25esa	GOTO				N
261761	2025-07-07 11:19:07	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	02:44:01.269	+05:25:51.89	2025-07-07 08:54:23.904	17.382	orange-ATLAS		PSN		ATLAS25hbn	ATLAS				N
261647	2025-07-05 14:38:39	Fritz	Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.	ZTF	ZTF	02:44:01.262	+05:25:51.98	2025-06-30 11:29:13.001	17.3232	r-ZTF		PSN		ZTF25aazkont	ZTF			2025TNSTR2575....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

21480

2025-07-06 14:23:06

ZTF_Bot1

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

ZTF

SN II

0.024157

1

ZTF

2025TNSCR2588....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
21480	2025-07-06 10:45:45	P60 / SEDM	2160	SEDmRobot	auto	ZTF	tns_2025qkn_2025-07-06_10-45-45.189583_P60_SEDM_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 268483 of Group Pan-STARRS
Previous RA, DEC: 02:44:01.262, +05:25:51.98 (41.0052583, +5.4311057)
Updated RA, DEC: 02:44:01.265, +05:25:51.97 (41.0052705072, +5.43110398258)

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