2018bzo | Transient Name Server

RA/DEC (2000)

13:03:58.000 -30:24:05.65

195.991667 -30.401569

Type

CV

Redshift

Discovery Report Classification Report

Reporting Group

ASAS-SN

Discovering Data Source

ASAS-SN

Discovery Date

2018-05-27 01:12:00.000

TNS AT

Y

Public

Y

Discovery Mag

16.3

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

▌

Gaia_Gaia-photometric_G

▌

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
	2088	2018-06-06 21:45:27	LT / SPRAT	1000	S. Prentice		None	tns_2018bzo_2018-06-06_21-45-27_LT_SPRAT.txt	tns_2018bzo_2018-06-06_21-45-27_LT_SPRAT.fits	Object
Binning factor: (rounded to nearest integer >1) Mouse hovers at WL: 0 (rest), ▌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

2018-05-23 02:09:36 - 2018-05-27 01:12:00

2458261.59 - 2458265.55

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
29058	2018-05-27 01:12:00	2458265.55	16.3			ABMag	g-Sloan	ASASSN-3_Paczynski
29057	2018-05-23 02:09:36	2458261.59			17.9	ABMag	g-Sloan	ASASSN-3_Paczynski			[Last non detection]

G-Gaia

Gaia_Gaia-photometric

2018-01-29 03:15:50 - 2018-06-06 09:34:33

2458147.6359954 - 2458275.8989931

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
29724	2018-06-06 09:34:33	2458275.8989931	17.9	0.2		ABMag	G-Gaia	Gaia_Gaia-photometric	60	Robot
29723	2018-01-29 03:15:50	2458147.6359954			21.5	ABMag	G-Gaia	Gaia_Gaia-photometric		Robot	[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2018-06-02 09:21:36 - 2018-06-02 09:21:36

2458271.89 - 2458271.89

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
29518	2018-06-02 09:21:36	2458271.89			18.71	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2018-06-04 07:52:19 - 2018-06-04 07:52:19

2458273.8279977 - 2458273.8279977

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
29519	2018-06-04 07:52:19	2458273.8279977	17.744	0.078	18.77	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	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
19216	2018-06-08 16:51:35	Gaia_Bot1	A. Delgado, D. Harrison, S. Hodgkin et al.	GaiaAlerts	GaiaAlerts	13:03:58.000	-30:24:05.65	2018-06-06 09:34:33.000	17.9	G-Gaia		PSN		Gaia18blt	GaiaAlerts		blue hostless transient, aka ASASSN-18lg		N
19104	2018-06-05 19:58:46	ATLAS_Bot1	J. Tonry, B. Stalder, L. Denneau et al.	ATLAS	ATLAS	13:03:58.006	-30:24:05.47	2018-06-04 07:52:19.000	17.744	orange-ATLAS		PSN		ATLAS18qao	ATLAS				N
18873	2018-05-27 04:22:38	Krzysztof Stanek	K. Z. Stanek, for the ASAS-SN team	ASAS-SN	ASAS-SN	13:03:58.006	-30:24:06.08	2018-05-27 01:12:00.000	16.3	g-Sloan		PSN		ASASSN-18lg	ASAS-SN		No Vizier match, possible faint, blue PS1 match, could be a "hostless" SN or a CV, about ~2 arcmin (~30 kpc) away from z=0.012082 ESO 443- G 043	2018TNSTR.713....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

2083

2018-06-07 09:00:58

Simon Prentice

S. Prentice, S. Smartt, K. Maguire (QUB)

None

CV

1

Spectrum appears blue and featureless, and the light curve is declining rapidly, suggesting a Galactic CV.

2018TNSCR.773....1P

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
2088	2018-06-06 21:45:27	LT / SPRAT	1000	S. Prentice		None	tns_2018bzo_2018-06-06_21-45-27_LT_SPRAT.txt	tns_2018bzo_2018-06-06_21-45-27_LT_SPRAT.fits	Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 19216 of Group GaiaAlerts
Previous RA, DEC: 13:03:58.006, -30:24:06.08 (195.99169, -30.40169)
Updated RA, DEC: 13:03:58.000, -30:24:05.65 (195.991667, -30.401569)

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Finding Chart

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

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