2025lga | Transient Name Server

RA/DEC (2000)

13:08:23.491 +68:08:52.48

197.0978805 +68.1479124

Type

SN Ia

Redshift

0.05

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2025-05-22 08:48:08.064

TNS AT

Y

Public

Y

Discovery Mag

18.771

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
	21189	2025-05-29 00:00:00	LT / SPRAT		Charlotte-Grace Touchard-Paxton, Kate Maguire, Umut Burgaz, Christine Collins, Cillian O'Donnell, Ravi Seth, Jacobus Terwel, Tho	Charlotte-Grace Touchard-Paxton	TCD	tns_2025lga_2025-05-29_LT_SPRAT_TCD.text		Object			SNID classification as 99.8% match with sn1995E at +3.9d, redshift of 0.053
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 SNID classification as 99.8% match with sn1995E at +3.9d, redshift of 0.053

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

Clear-

LAST_LAST-Cam

2024-07-09 19:06:43 - 2025-05-27 19:01:28

2460501.29633 - 2460823.29268

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
492213	2025-05-27 19:01:28	2460823.29268	18.39			ABMag	Clear-	LAST_LAST-Cam	400
492212	2024-07-09 19:06:43	2460501.29633			21.37	ABMag	Clear-	LAST_LAST-Cam	3580		[Last non detection]

L-GOTO

GOTO-N_GOTO-2

2025-05-20 22:41:34 - 2025-05-26 22:57:11

2460816.445528 - 2460822.456384

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
491784	2025-05-26 22:57:11	2460822.456384	18.55	0.09		ABMag	L-GOTO	GOTO-N_GOTO-2	180
491783	2025-05-20 22:41:34	2460816.445528			18.9	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-06-06 04:14:25 - 2025-06-23 06:25:19

2460832.6766782 - 2460849.767581

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
497650	2025-06-23 06:25:19	2460849.767581	18.7284	0.0776525		ABMag	r-ZTF	P48_ZTF-Cam
497649	2025-06-19 06:53:03	2460845.7868403	18.5958	0.0651655		ABMag	r-ZTF	P48_ZTF-Cam
497648	2025-06-06 04:14:25	2460832.6766782			19.8673	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-05-22 08:48:08 - 2025-05-22 08:48:08

2460817.86676 - 2460817.86676

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
490019	2025-05-22 08:48:08	2460817.86676	18.771	0.119	19.48	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-05-16 10:42:35 - 2025-05-16 10:42:35

2460811.94624 - 2460811.94624

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
490018	2025-05-16 10:42:35	2460811.94624			18.8	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
259808	2025-06-23 07:43:42	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	13:08:23.491	+68:08:52.48	2025-06-19 06:53:03.001	18.5958	r-ZTF		PSN		ZTF25aavtsxe	ZTF				N
257056	2025-05-28 12:59:34	LAST_Bot1	R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS) et al.	LAST	LAST	13:08:23.389	+68:08:51.97	2025-05-27 19:01:27.552	18.39	Clear-		PSN			LAST				N
256872	2025-05-27 06:58:39	GOTO_bot	A. Kumar, G. Ramsay, K. Ackley et al.	GOTO	GOTO	13:08:23.546	+68:08:52.34	2025-05-26 22:57:11.232	18.55	L-GOTO		Other		GOTO25dda	GOTO				N
255923	2025-05-22 13:52:37	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland et al.	ATLAS	ATLAS	13:08:23.537	+68:08:52.40	2025-05-22 08:48:08.064	18.771	orange-ATLAS		PSN		ATLAS25ffg	ATLAS			2025TNSTR1890....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

21189

2025-05-30 14:52:22

Charlotte-Grace Touchard-Paxton

Charlotte-Grace Touchard-Paxton, Kate Maguire, Umut Burgaz, Christine Collins, Cillian O'Donnell, Ravi Seth, Jacobus Terwel, Tomas Muller Bravo

TCD

SN Ia

0.05

1

TCD

SNID classification, Ia-norm, redshift 0.053, phase of +3.9d

2025TNSCR2043....1T

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
21189	2025-05-29 00:00:00	LT / SPRAT		Charlotte-Grace Touchard-Paxton, Kate Maguire, Umut Burgaz, Christine Collins, Cillian O'Donnell, Ravi Seth, Jacobus Terwel, Tho	Charlotte-Grace Touchard-Paxton	TCD	tns_2025lga_2025-05-29_LT_SPRAT_TCD.text		Object			SNID classification as 99.8% match with sn1995E at +3.9d, redshift of 0.053

Comments

Object coordinates updated

Object coordinates updated according to AT-report 259808 of Group ZTF
Previous RA, DEC: 13:08:23.537, +68:08:52.40 (197.09807, +68.147888)
Updated RA, DEC: 13:08:23.491, +68:08:52.48 (197.0978805, +68.1479124)

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