2025gxc | Transient Name Server

RA/DEC (2000)

12:20:13.200 +29:04:12.29

185.0550011 +29.0700818

Type

SN Ia-pec

Redshift

0.066206

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2025-04-06 06:57:05.760

TNS AT

Y

Public

Y

Discovery Mag

18.717

Filter

orange-ATLAS

Reporter/s

J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)

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
	20773	2025-04-11 07:30:33	P60 / SEDM	2700	SEDmRobot		ZTF	tns_2025gxc_2025-04-11_07-30-33.071454_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

L-GOTO

GOTO-N_GOTO-1

2025-03-21 01:42:57 - 2025-04-04 01:01:31

2460755.571486 - 2460769.542723

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
482128	2025-04-04 01:01:31	2460769.542723	19.46	0.17		ABMag	L-GOTO	GOTO-N_GOTO-1	180
482127	2025-03-21 01:42:57	2460755.571486			19.7	ABMag	L-GOTO	GOTO-N_GOTO-1	180		[Last non detection]

BG-q-BlackGem

BG4_BlackGEM-Cam4

2025-04-22 01:19:09 - 2025-04-22 01:19:09

2460787.5549653 - 2460787.5549653

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
587126	2025-04-22 01:19:09	2460787.5549653	18.4	0.04	20.54	ABMag	BG-q-BlackGem	BG4_BlackGEM-Cam4	60	robotic

BG-q-BlackGem

BG3_BlackGEM-Cam3

2025-04-01 04:30:14 - 2025-04-01 04:30:14

2460766.687662 - 2460766.687662

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
587125	2025-04-01 04:30:14	2460766.687662			20.14	ABMag	BG-q-BlackGem	BG3_BlackGEM-Cam3	60	robotic	[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-04-07 07:36:37 - 2025-04-07 09:11:04

2460772.8170949 - 2460772.8826852

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
481157	2025-04-07 09:11:04	2460772.8826852	18.7635	0.112521		ABMag	r-ZTF	P48_ZTF-Cam
481156	2025-04-07 07:36:37	2460772.8170949			19.7285	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

g-ZTF

P48_ZTF-Cam

2025-04-07 09:40:49 - 2025-04-07 09:40:49

2460772.9033449 - 2460772.9033449

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
481158	2025-04-07 09:40:49	2460772.9033449	18.7619	0.16163		ABMag	g-ZTF	P48_ZTF-Cam

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-04-06 06:57:06 - 2025-04-06 06:57:06

2460771.78965 - 2460771.78965

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
481091	2025-04-06 06:57:06	2460771.78965	18.717	0.169	19.11	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-04-05 09:37:19 - 2025-04-05 09:37:19

2460770.90091 - 2460770.90091

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
481090	2025-04-05 09:37:19	2460770.90091			15.76	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	Related files	AT Type	Host name	Internal name	Assoc. Groups	End prop. period	Remarks	ADS Bibcode	Unreal	Auto classification
306127	2026-05-27 16:30:13	BlackGEM_Bot1	H. Tranin, F. Stoppa, D. Pieterse et al.	BlackGEM	BlackGEM	12:20:13.165	+29:04:12.58	2025-04-22 01:19:09.000	18.4	BG-q-BlackGem		PSN		BGEM J122013.16+290412.6	BlackGEM				N
251645	2025-04-14 23:13:19	GOTO_bot	S. Belkin, K. Ackley, M. Dyer et al.	GOTO	GOTO	12:20:13.196	+29:04:12.41	2025-04-04 01:01:31.008	19.46	L-GOTO		Other		GOTO25bus	GOTO				N
251129	2025-04-07 09:53:57	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	12:20:13.200	+29:04:12.29	2025-04-07 09:11:04.001	18.7635	r-ZTF		PSN		ZTF25aalrvjj	ZTF				N
251101	2025-04-06 19:54:32	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland et al.	ATLAS	ATLAS	12:20:13.164	+29:04:12.95	2025-04-06 06:57:05.760	18.717	orange-ATLAS		PSN		ATLAS25dpw	ATLAS			2025TNSTR1296....1T	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

20773

2025-04-17 13:56:27

ZTF_Bot1

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

ZTF

SN Ia-pec

0.066206

1

ZTF

2025TNSCR1419....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
20773	2025-04-11 07:30:33	P60 / SEDM	2700	SEDmRobot		ZTF	tns_2025gxc_2025-04-11_07-30-33.071454_P60_SEDM_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 251129 of Group ZTF
Previous RA, DEC: 12:20:13.164, +29:04:12.95 (185.05485, +29.0702633333)
Updated RA, DEC: 12:20:13.200, +29:04:12.29 (185.0550011, +29.0700818)

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