20111+1611 BUP 205BC

Coord 2000	20111+1611		Discov num	BUP 205		Comp	BC		Coord arcsec 2000	20 11 13.62 +16 08 24.5
Date first	1904		Date last	2015		Obs	15
Pa first	270		Pa last	273		P.A. Now (θ)	273°
Sep first	64.0		Sep last	61.8		Sep. Now (ρ)	61.8"
Mag pri	9.67		Mag sec	12.65		delta mag (ΔM)	2.98		Spectral class	K0 (yellow-orange)
Pri motion ra	-024		Sec motion ra	+002
Pri motion dec	-027		Sec motion dec	+001
Notes	N U (See Notes, Proper motion indicates non-physical)

Visually invisible, K-band or other infrared star rPM=1.058 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		105793	20111+1611	ENG 71	AB	1893	2015	14	148	212.3	7.42	9.67	2.25
Show		105793	20111+1611	HZG 15	AD	1904	2015	14	255	35.3	7.42	11.21	3.79
Show		105793	20111+1611	GIC 163	AE	1962	2015	10	92	107.7	7.42	13.93	6.51
Show		105793	20111+1611	BUP 205	BC	1904	2015	15	273	61.8	9.67	12.65	2.98		<===

Quintuple system
5 visible stars in this system

Precise pa	273.1		Precise sep	61.784		Constellation	Sagitta		SAO	105793
Tycho2	1618-00610-1		Gaia DR2	09802848000		HD	355082

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20111+1611	BUP 205	BC	2002	4	273	61.7	9.67	12.62		D	201113.62+160824.5
20111+1611	BUP 205	BC	2008	5	273	61.8	9.67	12.62		D	201113.62+160824.5
20111+1611	BUP 205	BC	2013	8	273	60.5	9.67	12.65		NU	201113.62+160824.5
20111+1611	BUP 205	BC	2014	9	273	61.1	9.67	12.65	K0	NU	201113.62+160824.5
20111+1611	BUP 205	BC	2015	10	273	61.8	9.67	12.65	K0	NU	201113.62+160824.5

If you need more information about this double, apply for a data request form to the WDS.