2025qqz | Transient Name Server

RA/DEC (2000)

18:11:06.402 +15:17:18.55

272.7766752 +15.2884856

Type

SN II

Redshift

0.031

Discovery Report Classification Report

Related AstroNotes: 2025-229

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-07-08 06:32:09.000

TNS AT

Public

Discovery Mag

19.2893

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	Spec. Type
	21865	2025-08-19 06:42:01	Lick-3m / KAST		R. Michael Rich, Jacob Wise	Jacob Wise	ZTF	tns_2025qqz_2025-08-19_06-42-01.09_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
	21840	2025-08-19 00:00:00	Keck1 / LRIS	300	Viraj Karambelkar, Kaustav Kashyap Das	Viraj Karambelkar, Kaustav Kashyap Das	ZTF	tns_2025qqz_2025-08-19_00-00-00_Keck1_LRIS_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

2024-07-14 21:22:24 - 2025-07-21 18:47:04

2460506.39055 - 2460878.28269

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
504092	2025-07-21 18:47:04	2460878.28269	18.86			ABMag	Clear-	LAST_LAST-Cam	400
504091	2024-07-14 21:22:24	2460506.39055			20.12	ABMag	Clear-	LAST_LAST-Cam	400		[Last non detection]

L-GOTO

GOTO-S_GOTO-3

2025-07-13 14:14:58 - 2025-07-13 14:14:58

2460870.093731 - 2460870.093731

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
503045	2025-07-13 14:14:58	2460870.093731	18.09	0.19		ABMag	L-GOTO	GOTO-S_GOTO-3	180

orange-ATLAS

ATLAS-CHL_ATLAS-04

2025-07-11 04:53:36 - 2025-07-11 04:53:36

2460867.70389 - 2460867.70389

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
502284	2025-07-11 04:53:36	2460867.70389	17.892	0.188	17.98	ABMag	orange-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot

L-GOTO

GOTO-N_GOTO-1

2025-07-12 00:47:44 - 2025-07-12 00:47:44

2460868.533145 - 2460868.533145

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
503044	2025-07-12 00:47:44	2460868.533145			18	ABMag	L-GOTO	GOTO-N_GOTO-1	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-07-08 06:32:09 - 2025-07-08 06:32:09

2460864.7723264 - 2460864.7723264

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
501587	2025-07-08 06:32:09	2460864.7723264	19.2893	0.157694		ABMag	r-ZTF	P48_ZTF-Cam

g-ZTF

P48_ZTF-Cam

2025-07-07 05:31:57 - 2025-07-08 10:19:23

2460863.7305208 - 2460864.9301273

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
501588	2025-07-08 10:19:23	2460864.9301273	19.2965	0.148456		ABMag	g-ZTF	P48_ZTF-Cam
501586	2025-07-07 05:31:57	2460863.7305208			19.9901	ABMag	g-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-07-10 10:55:27 - 2025-07-10 10:55:27

2460866.95517 - 2460866.95517

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
502283	2025-07-10 10:55:27	2460866.95517			18.52	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	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	AT Type	Internal name	Assoc. Groups	ADS Bibcode	Unreal
263330	2025-07-22 05:18:36	LAST_Bot1	E. A. Zimmerman (WIS),R. Konno (WIS),A. Horowicz (WIS) et al.	LAST	LAST	18:11:06.343	+15:17:18.04	2025-07-21 18:47:04.416	18.86	Clear-	PSN		LAST		N
262786	2025-07-17 06:39:22	GOTO_bot	A. Kumar,G. Ramsay,K. Ackley et al.	GOTO	GOTO	18:11:06.394	+15:17:18.61	2025-07-13 14:14:58.272	18.09	L-GOTO	Other	GOTO25ezh	GOTO		N
262377	2025-07-13 08:45:15	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	18:11:06.403	+15:17:18.72	2025-07-11 04:53:36.096	17.892	orange-ATLAS	PSN	ATLAS25hoa	ATLAS		N
261915	2025-07-09 15:26:49	Fritz	Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.	ZTF	ZTF	18:11:06.402	+15:17:18.55	2025-07-08 06:32:09.000	19.2893	r-ZTF	PSN	ZTF25abajquu	ZTF	2025TNSTR2633....1S	N

Classification Reports

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

21865

2025-08-26 13:48:11

Jacob Wise

Jacob Wise (LJMU), Daniel Perley (LJMU), Aleksandra Bochenek (LJMU), Zoe McGrath (LJMU), R. Michael Rich (UCLA)

ZTF

SN II

0.031

ZTF

Spectrum displays broad H-alpha P-Cygni emission, confirming previous SN II classification. Redshift updated to z = 0.031 using host galaxy emission features in spectrum.

2025TNSCR3386....1W

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
21865	2025-08-19 06:42:01	Lick-3m / KAST		R. Michael Rich, Jacob Wise	Jacob Wise	ZTF	tns_2025qqz_2025-08-19_06-42-01.09_Lick-3m_KAST_ZTF.txt		Object

21840

2025-08-21 17:33:35

ZTF_Bot1

K. Das, A. Mehla, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF)

ZTF

SN II

0.0315

ZTF

2025TNSCR3310....1D

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
21840	2025-08-19 00:00:00	Keck1 / LRIS	300	Viraj Karambelkar, Kaustav Kashyap Das	Viraj Karambelkar, Kaustav Kashyap Das	ZTF	tns_2025qqz_2025-08-19_00-00-00_Keck1_LRIS_ZTF.ascii		Object

SN 2025qqz

Spectra

Light curves

Comments