2025qfc | Transient Name Server

RA/DEC (2000)

17:53:58.316 +45:30:09.32

268.492983058 +45.5025883374

Type

SN Ia-91T-like

Redshift

0.135

Discovery Report Classification Report

Reporting Group

ALeRCE

Discovering Data Source

ZTF

Discovery Date

2025-07-01 07:15:13.000

TNS AT

Y

Public

Y

Host Name

SDSS J175358.34+453009.5

Discovery Mag

20.5794

Filter

g-ZTF

Reporter/s

A. Munoz-Arancibia, F.E. Bauer, G. Pignata, F. Forster, A. Mourao, S. Jurado, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, F. Andrades, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker

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
	21594	2025-07-18 02:00:52	NOT / ALFOSC	900	V. Vuolteenaho	Panos Charalampopoulos	None	tns_2025qfc_2025-07-18_02-00-51.650_NOT_ALFOSC_None.ascii	tns_2025qfc_2025-07-18_02-00-51.650_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

2025-07-20 00:17:17 - 2025-07-20 00:17:17

2460876.512 - 2460876.512

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
503643	2025-07-20 00:17:17	2460876.512	19.574	0.111	20.42	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot

r-ZTF

P48_ZTF-Cam

2025-06-30 08:38:50 - 2025-07-03 07:17:20

2460856.8603009 - 2460859.8037037

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
500627	2025-07-03 07:17:20	2460859.8037037	20.7599	0.368259	20.1841	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
500625	2025-07-02 07:18:10	2460858.8042824	20.1789	0.192111	20.5976	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
500623	2025-06-30 08:38:50	2460856.8603009			20.284	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF

g-ZTF

P48_ZTF-Cam

2025-07-01 07:15:13 - 2025-07-03 08:49:56

2460857.8022338 - 2460859.8680093

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
500628	2025-07-03 08:49:56	2460859.8680093	19.994	0.168747	20.8267	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
500626	2025-07-02 08:06:24	2460858.8377778	20.3556	0.194808	20.7512	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
500624	2025-07-01 07:15:13	2460857.8022338	20.5794	0.206726	20.8521	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-07-17 06:48:33 - 2025-07-17 06:48:33

2460873.78372 - 2460873.78372

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
503642	2025-07-17 06:48:33	2460873.78372			18.8	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

w-P1

PS1_GPC1

2025-07-04 08:15:07 - 2025-07-04 08:15:07

2460860.84383 - 2460860.84383

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
501977	2025-07-04 08:15:07	2460860.84383	20.68	0.1	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	Related files	AT Type	Host name	Internal name	Assoc. Groups	End prop. period	Remarks	ADS Bibcode	Unreal	Auto classification
263071	2025-07-20 08:43:52	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland et al.	ATLAS	ATLAS	17:53:58.311	+45:30:09.45	2025-07-20 00:17:16.800	19.574	wide-ATLAS		PSN		ATLAS25hye	ATLAS				N
262148	2025-07-11 21:52:03	PS1_Bot1	K. C. Chambers, T. de Boer, J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	17:53:58.316	+45:30:09.32	2025-07-04 08:15:06.912	20.68	w-P1		PSN		PS25evo	Pan-STARRS				N
261395	2025-07-03 18:36:21	ALeRCE	A. Munoz-Arancibia, F.E. Bauer, G. Pignata et al.	ALeRCE	ZTF	17:53:58.319	+45:30:09.32	2025-07-01 07:15:13.000	20.5794	g-ZTF		PSN	SDSS J175358.34+453009.5	ZTF25aaysvaj	ZTF		Early SN candidate (r-rise > 0.08+-0.02 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF25aaysvaj	2025TNSTR2531....1M	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

21594

2025-07-22 07:58:27

Panos Charalampopoulos

Panos Charalampopoulos (UTU)

None

SN Ia-91T-like

0.135

1

1

We report the classification of AT2025qfc as a Ia supernova based on an optical spectrum obtained with the Nordic Optical Telescope on 2025-07-17 (i.e., MJD 60874.08). The transient is coincident with the nucleus of the host galaxy. Comparison with a library of supernovae spectra using SNID (Blondin & Tonry 2007, ApJ, 666, 1024), suggests AT2025qfc is an around peak SN Ia 91-T-like at a redshift of z~0.135.

2025TNSCR2840....1C

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2025qfc_atrep_21594.png	Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B).	2025-07-22 07:58:27	Panos Charalampopoulos

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
21594	2025-07-18 02:00:52	NOT / ALFOSC	900	V. Vuolteenaho	Panos Charalampopoulos	None	tns_2025qfc_2025-07-18_02-00-51.650_NOT_ALFOSC_None.ascii	tns_2025qfc_2025-07-18_02-00-51.650_NOT_ALFOSC_None.fits	Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 262148 of Group Pan-STARRS
Previous RA, DEC: 17:53:58.319, +45:30:09.32 (268.49299743313, +45.502588864482)
Updated RA, DEC: 17:53:58.316, +45:30:09.32 (268.492983058, +45.5025883374)

Log in or register to post comments

Log in or register to post comments