2023ysx | Transient Name Server

RA/DEC (2000)

03:34:40.050 -55:19:13.30

53.666875 -55.320361

Type

SN II

Redshift

0.052

Discovery Report Classification Report

Related AstroNotes: 2023-353

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2023-12-03 03:46:59.232

TNS AT

Y

Public

Y

Discovery Mag

18.666

Filter

orange-ATLAS

Reporter/s

J. Tonry, L. Denneau, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt (Oxford/QUB), K. W. Smith, S. Srivastav, D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng (Queen's University Belfast), A. Aamer (QUB/Birmingham), L. Shingles (GSI/QUB), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. Sommer (LMU/QUB), L. Rhodes, A. Andersson, H. Stevance, S. Ramaiya, J. Gillanders (Oxford)

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

ATLAS-CHL_ATLAS-04_orange_

▌

ATLAS-STH_ATLAS-03_orange_

▌

Gaia_Gaia-photometric_G_

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
	16365	2023-12-21 06:38:07	ESO-NTT / EFOSC2-NTT	900	S. Barmentloo, P. Pessi	T. Schweyer	ePESSTO+	tns_2023ysx_2023-12-21_06-38-07_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci	tns_2023ysx_2023-12-21_06-38-07_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits	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

orange-ATLAS

ATLAS-CHL_ATLAS-04

2023-12-03 03:46:59 - 2023-12-03 03:46:59

2460281.65763 - 2460281.65763

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
376748	2023-12-03 03:46:59	2460281.65763	18.666	0.118	19.54	ABMag	orange-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot

orange-ATLAS

ATLAS-STH_ATLAS-03

2023-11-28 22:40:36 - 2023-11-28 22:40:36

2460277.44486 - 2460277.44486

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
376747	2023-11-28 22:40:36	2460277.44486			18.79	ABMag	orange-ATLAS	ATLAS-STH_ATLAS-03	30	Robot	[Last non detection]

G-Gaia

Gaia_Gaia-photometric

2023-11-04 10:32:10 - 2023-12-04 06:04:19

2460252.939 - 2460282.753

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
377440	2023-12-04 06:04:19	2460282.753	18.67	0.2		ABMag	G-Gaia	Gaia_Gaia-photometric	60	Robot
377439	2023-11-04 10:32:10	2460252.939			21.5	ABMag	G-Gaia	Gaia_Gaia-photometric		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	Bibcode	Unreal	Auto classification
195325	2023-12-07 19:16:17	Gaia_Bot1	S.T. Hodgkin,E. Breedt,A. Delgado et al.	GaiaAlerts	GaiaAlerts	03:34:40.050	-55:19:13.30	2023-12-04 06:04:19.200	18.67	G-Gaia		PSN		Gaia23dna	GaiaAlerts		Candidate SN near faint DSS source		N
194870	2023-12-04 17:08:49	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	03:34:40.062	-55:19:12.98	2023-12-03 03:46:59.232	18.666	orange-ATLAS		PSN		ATLAS23wna	ATLAS			2023TNSTR3125....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

16279

2023-12-21 14:26:01

ePESSTOplus_Bot1

S. Barmentloo, P. Pessi, T. Schweyer, E. A. Zimmerman on behalf of ePESSTO+

ePESSTO+

SN II

0.052

1

ePESSTO+

2023TNSCR3339....1B

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
16365	2023-12-21 06:38:07	ESO-NTT / EFOSC2-NTT	900	S. Barmentloo, P. Pessi	T. Schweyer	ePESSTO+	tns_2023ysx_2023-12-21_06-38-07_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci	tns_2023ysx_2023-12-21_06-38-07_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits	Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 195325 of Group GaiaAlerts
Previous RA, DEC: 03:34:40.062, -55:19:12.98 (53.6669255556, -55.3202733333)
Updated RA, DEC: 03:34:40.050, -55:19:13.30 (53.666875, -55.320361)

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