2025cjw | Transient Name Server

RA/DEC (2000)

07:03:16.183 +12:31:59.03

105.8174279 +12.533065

Type

SN Ia

Redshift

0.023

Discovery Report Classification Report

Reporting Group

GOTO

Discovering Data Source

GOTO

Discovery Date

2025-02-22 20:50:14.208

TNS AT

Y

Public

Y

Discovery Mag

17.13

Filter

L-GOTO

Reporter/s

D. O'Neill, K. Ackley, M. Dyer, F. Jiménez-Ibarra, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, L. Nuttall, E. Pallé, D. Pollacco, T. Killestein, A. Kumar, on behalf of GOTO collaboration

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

GOTO-N_GOTO-2_L

▌

P48_ZTF-Cam_r

▌

P48_ZTF-Cam_g

▌

Other_Other_Clear

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
	20442	2025-02-23 00:00:00	UH88 / SNIFS	1800	Hoogendam, Konh	Kong	SCAT	tns_2025cjw_2025-02-23_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

2025-02-13 23:22:28 - 2025-02-22 20:50:14

2460720.473942 - 2460729.368224

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
470860	2025-02-22 20:50:14	2460729.368224	17.13	0.07		ABMag	L-GOTO	GOTO-N_GOTO-2	180
470859	2025-02-13 23:22:28	2460720.473942			17.8	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-02-18 07:51:03 - 2025-03-10 06:56:29

2460724.8271181 - 2460744.7892245

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
474663	2025-03-10 06:56:29	2460744.7892245	16.8329	0.0398984		ABMag	r-ZTF	P48_ZTF-Cam
474662	2025-02-18 07:51:03	2460724.8271181	18.111	0.0637517		ABMag	r-ZTF	P48_ZTF-Cam

g-ZTF

P48_ZTF-Cam

2025-02-11 08:57:24 - 2025-02-11 08:57:24

2460717.8731944 - 2460717.8731944

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
474661	2025-02-11 08:57:24	2460717.8731944			18.454	ABMag	g-ZTF	P48_ZTF-Cam			[Last non detection]

Clear-

Other_Other

2025-03-01 05:29:47 - 2025-03-06 04:43:33

2460735.7290162 - 2460740.6969097

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
473632	2025-03-06 04:43:33	2460740.6969097	16.4	0.2	18	Other	Clear-	Other_Other	30	B. Kumar	3 frames taken with a 0.36-m f/2 astrograph + CCD; zero points calibrated to UCAC-4 magnitudes.
473631	2025-03-01 05:29:47	2460735.7290162			18	Other	Clear-	Other_Other	30	B. Kumar	[Last non detection] 3 frames taken with a 0.36-m f/2 astrograph + CCD; zero points calibrated to UCAC-4 magnitudes.

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

247548

2025-03-10 07:29:24

Fritz

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

ZTF

ZTF

07:03:16.183

+12:31:59.03

2025-02-18 07:51:03.003

18.111

r-ZTF

PSN

ZTF25aafvgfi

ZTF

N

246814

2025-03-06 07:15:47

Balaji Kumar

Balaji Kumar et al.

GEOTS

GEOTS

07:03:16.140

+12:31:59.30

2025-03-06 04:43:33.000

16.4

Clear-

1

PSN

LEDA 2802390

GEOTS-Balaji-2025-001

GEOTS

Transient is 12.57 arcsec from the centre of Galaxy LEDA 2802390

N

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2025cjw_atrep_246814_GEOTS.png	Discovery and Reference Images	2025-03-06 07:15:47	Balaji Kumar

245517

2025-02-22 22:11:34

GOTO_bot

D. O'Neill,K. Ackley,M. Dyer et al.

GOTO

GOTO

07:03:16.188

+12:31:59.51

2025-02-22 20:50:14.208

17.13

L-GOTO

Other

GOTO25arc

GOTO

2025TNSTR.719....1O

N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

20442

2025-02-23 08:09:14

Willem Hoogendam

Willem Hoogendam (IfA/Hawaii) and Miranda Kong (IfA/Hawaii) on behalf of the SCAT team

SCAT

SN Ia

0.023

1

SCAT

SNID matches to SN Ia slightly before maximum light. Redshift from SNID (0.023)

2025TNSCR.743....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
20442	2025-02-23 00:00:00	UH88 / SNIFS	1800	Hoogendam, Konh	Kong	SCAT	tns_2025cjw_2025-02-23_UH88_SNIFS_SCAT.dat		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 247548 of Group ZTF
Previous RA, DEC: 07:03:16.188, +12:31:59.51 (105.817449, +12.533197)
Updated RA, DEC: 07:03:16.183, +12:31:59.03 (105.8174279, 12.533065)

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