2025ghw | Transient Name Server

RA/DEC (2000)

11:36:55.233 +25:26:55.66

174.230137551 +25.4487955251

Type

SN Ia

Redshift

0.049196

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2025-03-31 10:52:20.064

TNS AT

Y

Public

Y

Discovery Mag

19.086

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
	20725	2025-04-07 10:33:00	P60 / SEDM	2160	SEDmRobot	auto	ZTF	tns_2025ghw_2025-04-07_10-33-00.235614_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-2

2025-03-27 01:01:38 - 2025-04-05 00:02:51

2460761.542795 - 2460770.501984

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
480864	2025-04-05 00:02:51	2460770.501984	18.1	0.05		ABMag	L-GOTO	GOTO-N_GOTO-2	180
480863	2025-03-27 01:01:38	2460761.542795			19.5	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

BG-q-BlackGem

BG2_BlackGEM-Cam2

2025-03-18 03:59:13 - 2025-04-29 00:35:00

2460752.6661227 - 2460794.5243056

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
484634	2025-04-29 00:35:00	2460794.5243056	18.19	0.06	20.89	ABMag	BG-q-BlackGem	BG2_BlackGEM-Cam2	60	robotic
484633	2025-03-18 03:59:13	2460752.6661227			19.87	ABMag	BG-q-BlackGem	BG2_BlackGEM-Cam2	60	robotic	[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-04-06 04:50:27 - 2025-04-06 04:50:27

2460771.7017014 - 2460771.7017014

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
481162	2025-04-06 04:50:27	2460771.7017014			20.0984	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

g-ZTF

P48_ZTF-Cam

2025-04-06 07:23:37 - 2025-04-07 09:35:00

2460771.8080671 - 2460772.8993056

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
481164	2025-04-07 09:35:00	2460772.8993056	17.6639	0.0549925		ABMag	g-ZTF	P48_ZTF-Cam
481163	2025-04-06 07:23:37	2460771.8080671	17.8169	0.06787		ABMag	g-ZTF	P48_ZTF-Cam

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-03-31 10:52:20 - 2025-03-31 10:52:20

2460765.95301 - 2460765.95301

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
479958	2025-03-31 10:52:20	2460765.95301	19.086	0.154	19.48	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-03-30 10:55:43 - 2025-03-30 10:55:43

2460764.95536 - 2460764.95536

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
479957	2025-03-30 10:55:43	2460764.95536			19.33	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot	[Last non detection]

i-P1

PS1_GPC1

2025-04-14 09:45:51 - 2025-04-14 09:45:51

2460779.90684 - 2460779.90684

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
488029	2025-04-14 09:45:51	2460779.90684	18.01	0.04	20.7	ABMag	i-P1	PS1_GPC1	45	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

254899

2025-05-12 17:24:10

PS1_Bot1

K. C. Chambers, T. de Boer, J. Fairlamb et al.

Pan-STARRS

Pan-STARRS

11:36:55.233

+25:26:55.66

2025-04-14 09:45:50.976

18.01

i-P1

PSN

PS25crr

Pan-STARRS

N

252900

2025-04-29 07:41:55

BlackGEM_Bot1

P. Groot, H. Tranin, F. Stoppa et al.

BlackGEM

BlackGEM

11:36:55.246

+25:26:55.76

2025-04-29 00:35:00.000

18.19

BG-q-BlackGem

1

PSN

BGEM J113655.24+252655.7

BlackGEM

N

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2025ghw_atrep_252900_BlackGEM.pdf	Finding Chart	2025-04-29 07:41:57	BlackGEM_Bot1

251131

2025-04-07 09:54:33

Fritz

Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.

ZTF

ZTF

11:36:55.252

+25:26:55.69

2025-04-06 07:23:36.997

17.8169

g-ZTF

PSN

ZTF25aalrrwj

ZTF

N

250972

2025-04-05 07:52:09

GOTO_bot

D. O'Neill, G. Ramsay, K. Ackley et al.

GOTO

GOTO

11:36:55.256

+25:26:55.74

2025-04-05 00:02:51.072

18.1

L-GOTO

Other

GOTO25bql

GOTO

N

250410

2025-03-31 16:47:52

ATLAS_Bot1

J. Tonry, L. Denneau, H. Weiland et al.

ATLAS

ATLAS

11:36:55.210

+25:26:55.71

2025-03-31 10:52:20.064

19.086

orange-ATLAS

PSN

ATLAS25dkn

ATLAS

2025TNSTR1210....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

20725

2025-04-07 16:11:22

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

0.049196

1

ZTF

2025TNSCR1320....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
20725	2025-04-07 10:33:00	P60 / SEDM	2160	SEDmRobot	auto	ZTF	tns_2025ghw_2025-04-07_10-33-00.235614_P60_SEDM_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 254899 of Group Pan-STARRS
Previous RA, DEC: 11:36:55.252, +25:26:55.69 (174.2302164, +25.448804)
Updated RA, DEC: 11:36:55.233, +25:26:55.66 (174.230137551, +25.4487955251)

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Object coordinates updated

Object coordinates updated according to AT-report 251131 of Group ZTF
Previous RA, DEC: 11:36:55.210, +25:26:55.71 (174.230042857, +25.4488085714)
Updated RA, DEC: 11:36:55.252, +25:26:55.69 (174.2302164, +25.448804)

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