2025lgu | Transient Name Server

RA/DEC (2000)

19:22:36.130 +75:35:22.54

290.65054370833 +75.589593516667

Type

SN Ia

Redshift

0.079

Discovery Report Classification Report

Reporting Group

ALeRCE

Discovering Data Source

ZTF

Discovery Date

2025-05-21 08:12:26.001

TNS AT

Y

Public

Y

Discovery Mag

19.386

Filter

g-ZTF

Reporter/s

S. Jurado, F.E. Bauer, F. Forster, , G. Pignata, A. Munoz-Arancibia, A. Mourao, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, B. Gamboa, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, E. Pizarro, 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
	21155	2025-05-27 08:58:37	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2025lgu_2025-05-27_08-58-37.231664_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

2025-05-24 19:13:23 - 2025-05-24 21:38:08

2460820.30096 - 2460820.40148

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
491142	2025-05-24 21:38:08	2460820.40148	19.13			ABMag	Clear-	LAST_LAST-Cam	400
491141	2025-05-24 19:13:23	2460820.30096			19.5	ABMag	Clear-	LAST_LAST-Cam	400		[Last non detection]

L-GOTO

GOTO-N_GOTO-2

2025-05-16 00:33:54 - 2025-05-22 04:08:11

2460811.523542 - 2460817.672348

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
491276	2025-05-22 04:08:11	2460817.672348	19.33	0.19		ABMag	L-GOTO	GOTO-N_GOTO-2	180
491275	2025-05-16 00:33:54	2460811.523542			19.1	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-05-21 10:24:13 - 2025-05-21 10:24:13

2460816.9334838 - 2460816.9334838

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
490073	2025-05-21 10:24:13	2460816.9334838	19.3439	0.123534	20.3885	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF

g-ZTF

P48_ZTF-Cam

2025-05-16 10:54:52 - 2025-05-21 08:12:26

2460811.9547685 - 2460816.8419676

4

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
490072	2025-05-21 08:12:26	2460816.8419676	19.386	0.0896358	20.4335	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
492076	2025-05-21 08:12:26	2460816.8419676	19.386	0.089636	20.4335	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF, classified by Fink
490071	2025-05-16 10:54:52	2460811.9547685			19.7734	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF
492075	2025-05-16 10:54:52	2460811.9547685			19.7734	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF, classified by Fink

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-05-22 13:00:22 - 2025-05-22 13:00:22

2460818.04192 - 2460818.04192

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
491191	2025-05-22 13:00:22	2460818.04192			19.08	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

cyan-ATLAS

ATLAS-HKO_ATLAS-02

2025-05-24 14:09:33 - 2025-05-24 14:09:33

2460820.08997 - 2460820.08997

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
491192	2025-05-24 14:09:33	2460820.08997	19.001	0.146	19.4	ABMag	cyan-ATLAS	ATLAS-HKO_ATLAS-02	30	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
257012	2025-05-27 18:15:46	Fink	Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker	Fink	ZTF	19:22:36.130	+75:35:22.54	2025-05-21 08:12:26.001	19.386	g-ZTF		PSN		ZTF25aaqyygm	ZTF		Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25aaqyygm		N
256614	2025-05-25 08:35:03	GOTO_bot	A. Kumar, D. O'Neill, K. Ackley et al.	GOTO	GOTO	19:22:36.143	+75:35:22.69	2025-05-22 04:08:11.040	19.33	L-GOTO		Other		GOTO25dbv	GOTO				N
256572	2025-05-25 05:56:25	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland et al.	ATLAS	ATLAS	19:22:36.166	+75:35:22.32	2025-05-24 14:09:33.408	19.001	cyan-ATLAS		PSN		ATLAS25fjp	ATLAS				N
256547	2025-05-25 04:16:55	LAST_Bot1	E. O. Ofek (WIS), R. Konno (WIS), E. A. Zimmerman (WIS) et al.	LAST	LAST	19:22:35.909	+75:35:22.79	2025-05-24 21:38:07.872	19.13	Clear-		PSN			LAST				N
255943	2025-05-22 14:01:48	ALeRCE	S. Jurado, F.E. Bauer, F. Forster et al.	ALeRCE	ZTF	19:22:36.139	+75:35:22.48	2025-05-21 08:12:26.001	19.386	g-ZTF		PSN		ZTF25aaqyygm	ZTF		Early SN candidate (g-rise > 0.11+-0.02 mag/day, r-rise > 0.14+-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/ZTF25aaqyygm	2025TNSTR1889....1J	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

21155

2025-05-27 09:51:32

ZTF_Bot1

C. Fremling, D. Neill, Y. Sharma on behalf of the SEDM Team (Caltech) and the Zwicky Transient Facility (ZTF) based on SNIascore

ZTF

SN Ia

0.079

1

ZTF

2025TNSCR1992....1F

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
21155	2025-05-27 08:58:37	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2025lgu_2025-05-27_08-58-37.231664_P60_SEDM_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 257012 of Group ZTF
Previous RA, DEC: 19:22:36.139, +75:35:22.48 (290.65057785469, +75.589578635589)
Updated RA, DEC: 19:22:36.130, +75:35:22.54 (290.65054370833, +75.589593516667)

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