2025hmt | Transient Name Server

RA/DEC (2000)

19:36:56.256 +52:59:50.44

294.2343994 +52.9973454

Type

SN Ia

Redshift

0.06

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2025-04-16 12:08:33.216

TNS AT

Y

Public

Y

Discovery Mag

18.625

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

▌

GOTO-N_GOTO-2_L

▌

P48_ZTF-Cam_r

▌

ATLAS-MLO_ATLAS-01_orange

▌

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
	20948	2025-04-23 14:41:33	UH88 / SNIFS	1800	Hinkle		SCAT	tns_2025hmt_2025-04-23_14-41-33_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

L-GOTO

GOTO-N_GOTO-2

2025-04-05 04:01:39 - 2025-04-19 03:08:36

2460770.667813 - 2460784.630974

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
482667	2025-04-19 03:08:36	2460784.630974	18.32	0.09		ABMag	L-GOTO	GOTO-N_GOTO-2	180
482666	2025-04-05 04:01:39	2460770.667813			19.5	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-05-25 10:51:20 - 2025-06-09 08:11:16

2460820.9523148 - 2460835.8411574

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
494281	2025-06-09 08:11:16	2460835.8411574	19.7047	0.141521		ABMag	r-ZTF	P48_ZTF-Cam
494280	2025-05-25 10:51:20	2460820.9523148	19.069	0.0757269		ABMag	r-ZTF	P48_ZTF-Cam

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-04-16 12:08:33 - 2025-04-16 12:08:33

2460782.00594 - 2460782.00594

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
482414	2025-04-16 12:08:33	2460782.00594	18.625	0.189	18.83	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-04-14 14:28:38 - 2025-04-14 14:28:38

2460780.10322 - 2460780.10322

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
482413	2025-04-14 14:28:38	2460780.10322			18.75	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
258059	2025-06-09 08:53:43	Fritz	Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.	ZTF	ZTF	19:36:56.256	+52:59:50.44	2025-05-25 10:51:19.998	19.069	r-ZTF		PSN		ZTF25aarzgvx	ZTF				N
251915	2025-04-19 15:08:02	GOTO_bot	D. O'Neill,K. Ackley,M. Dyer et al.	GOTO	GOTO	19:36:56.233	+52:59:50.55	2025-04-19 03:08:35.808	18.32	L-GOTO		Other		GOTO25bzc	GOTO				N
251771	2025-04-17 00:17:30	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	19:36:56.231	+52:59:50.60	2025-04-16 12:08:33.216	18.625	orange-ATLAS		PSN		ATLAS25dwo	ATLAS			2025TNSTR1408....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

20948

2025-05-03 03:07:31

Jason Hinkle

Jason Hinkle (UH/IfA) on behalf of SCAT

SCAT

SN Ia

0.06

1

SCAT

Type and redshift estimate from template cross-correlation with SNID (Blondin & Tonry 2007).

2025TNSCR1650....1H

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
20948	2025-04-23 14:41:33	UH88 / SNIFS	1800	Hinkle		SCAT	tns_2025hmt_2025-04-23_14-41-33_UH88_SNIFS_SCAT.dat		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 258059 of Group ZTF
Previous RA, DEC: 19:36:56.231, +52:59:50.60 (294.2342975, +52.9973875)
Updated RA, DEC: 19:36:56.256, +52:59:50.44 (294.2343994, +52.9973454)

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