2025iau | Transient Name Server

RA/DEC (2000)

13:50:44.931 +49:20:29.60

207.687210953 +49.3415563507

Type

SN Ia

Redshift

0.044

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2025-04-22 10:31:08.256

TNS AT

Y

Public

Y

Discovery Mag

18.181

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

▌

LAST_LAST-Cam_Clear

▌

PS2_GPC2_r

▌

ATLAS-HKO_ATLAS-02_orange

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
	20912	2025-04-28 09:02:16	UH88 / SNIFS	1800	Desai		SCAT	tns_2025iau_2460793.87657_UH88_SNIFS_SCAT.dat		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

2024-03-04 00:53:42 - 2025-05-03 19:08:33

2460373.53729 - 2460799.2976

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
486507	2025-05-03 19:08:33	2460799.2976	18.19			ABMag	Clear-	LAST_LAST-Cam	400
486506	2024-03-04 00:53:42	2460373.53729			20.42	ABMag	Clear-	LAST_LAST-Cam	4340		[Last non detection]

r-P1

PS2_GPC2

2025-05-02 08:50:32 - 2025-05-02 08:50:32

2460797.86843 - 2460797.86843

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
485620	2025-05-02 08:50:32	2460797.86843	17.67	0.02	20.6	ABMag	r-P1	PS2_GPC2	27	Robot

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-04-18 12:56:25 - 2025-04-22 10:31:08

2460784.03918 - 2460787.93829

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
483462	2025-04-22 10:31:08	2460787.93829	18.181	0.078	19.53	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot
483461	2025-04-18 12:56:25	2460784.03918			16.22	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
253880	2025-05-03 19:26:57	LAST_Bot1	E. O. Ofek (WIS), R. Konno (WIS), E. A. Zimmerman (WIS) et al.	LAST	LAST	13:50:44.871	+49:20:29.00	2025-05-03 19:08:32.640	18.19	Clear-		PSN			LAST				N
253430	2025-05-02 18:17:15	YSE_Bot1	D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello et al.	YSE	Pan-STARRS	13:50:44.931	+49:20:29.60	2025-05-02 08:50:32.352	17.67	r-P1		PSN		PS25bzg	Pan-STARRS				N
252311	2025-04-22 14:45:06	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland et al.	ATLAS	ATLAS	13:50:44.932	+49:20:29.74	2025-04-22 10:31:08.256	18.181	orange-ATLAS		PSN		ATLAS25ebn	ATLAS			2025TNSTR1482....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

20912

2025-04-28 10:41:29

Dhvanil Desai

Dhvanil Desai (on behalf of the SCAT team)

SCAT

SN Ia

0.044

1

SCAT

Redshift from host Halpha emission.

2025TNSCR1572....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
20912	2025-04-28 09:02:16	UH88 / SNIFS	1800	Desai		SCAT	tns_2025iau_2460793.87657_UH88_SNIFS_SCAT.dat		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 253430 of Group Pan-STARRS
Previous RA, DEC: 13:50:44.932, +49:20:29.74 (207.687218571, +49.3415942857)
Updated RA, DEC: 13:50:44.931, +49:20:29.60 (207.687210953, +49.3415563507)

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