2018yj | Transient Name Server

RA/DEC (2000)

05:03:19.646 -10:58:18.81

75.83186 -10.9718923077

Type

SN Ia

Redshift

0.035

Discovery Report Classification Report

Reporting Group

ASAS-SN

Discovering Data Source

ASAS-SN

Discovery Date

2018-02-25 02:24:00.000

TNS AT

Y

Public

Y

Host Name

2MASX J05031988-1058163

Discovery Mag

17

Filter

g-Sloan

Reporter/s

K. Z. Stanek, for the ASAS-SN team

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

ASASSN-3_Paczynski_g

▌

ATLAS-MLO_ATLAS-01_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
	1756	2018-02-28 12:00:00	Lijiang-2.4m / YFOSC	1800	Jujia Zhang		None	tns_2018yj_2018-02-28.5_Lijiang-2.4m_YFOSC.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

g-Sloan

ASASSN-3_Paczynski

2018-02-14 01:26:24 - 2018-02-25 02:24:00

2458163.56 - 2458174.6

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
25712	2018-02-25 02:24:00	2458174.6	17			ABMag	g-Sloan	ASASSN-3_Paczynski
25711	2018-02-14 01:26:24	2458163.56			18.5	ABMag	g-Sloan	ASASSN-3_Paczynski			[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2018-02-11 08:49:55 - 2018-02-15 07:56:38

2458160.8679977 - 2458164.8309954

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
25902	2018-02-15 07:56:38	2458164.8309954	18.788	0.134	19.17	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot
25901	2018-02-11 08:49:55	2458160.8679977			19.07	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	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
17168	2018-03-08 09:20:02	ATLAS_Bot1	J. Tonry,B. Stalder,L. Denneau et al.	ATLAS	ATLAS	05:03:19.646	-10:58:18.81	2018-02-15 07:56:38.000	18.788	orange-ATLAS		PSN		ATLAS18mif	ATLAS				N
17059	2018-02-26 01:30:21	Krzysztof Stanek	K. Z. Stanek,for the ASAS-SN team et al.	ASAS-SN	ASAS-SN	05:03:19.658	-10:58:20.24	2018-02-25 02:24:00.000	17	g-Sloan		PSN	2MASX J05031988-1058163	ASASSN-18dv	ASAS-SN		In several epochs, unknown redshift, blue host	2018TNSTR.269....1S	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

1751

2018-02-28 15:24:12

Jujia Zhang

Jujia Zhang (YNAO) and XiaoFeng Wang (THU)

None

SN Ia

0.035

1

The spectrum matches a norm SN Ia at a few days after maximum (e.g., SN 2007ca t = +3 days, via, SNID Blondin and Tonry 2007, Ap.J., 666, 1024)

2018TNSCR.278....1Z

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
1756	2018-02-28 12:00:00	Lijiang-2.4m / YFOSC	1800	Jujia Zhang		None	tns_2018yj_2018-02-28.5_Lijiang-2.4m_YFOSC.dat		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 17168 of Group ATLAS
Previous RA, DEC: 05:03:19.658, -10:58:20.24 (75.83191, -10.97229)
Updated RA, DEC: 05:03:19.646, -10:58:18.81 (75.83186, -10.9718923077)

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Finding Chart

http://www.astronomy.ohio-state.edu/~assassin/followup/asassn-18dv.png

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