20027+3355 BKO 522AD

Coord 2000	20027+3355		Discov num	BKO 522		Comp	AD		Coord arcsec 2000	20 02 40.29 +33 55 06.0
Date first	1998		Date last	2015		Obs	4
Pa first	199		Pa last	199		P.A. Now (θ)	199°
Sep first	10.6		Sep last	10.6		Sep. Now (ρ)	10.6"
Mag pri	12.50		Mag sec	13.50		delta mag (ΔM)	1		Spectral class
Pri motion ra	-004		Sec motion ra	-010
Pri motion dec	-010		Sec motion dec	-002
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=0.928 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20027+3355	BKO 522	AB	1998	2015	4	340	6.8	12.50	13.50	1.00
Show			20027+3355	BKO 522	AD	1998	2015	4	199	10.6	12.50	13.50	1.00		<===
Show			20027+3355	BKO 522	BC	2008	2008	1	15	1.9	13.50	13.50	0.00
Show			20027+3355	BKO 522	DE	1998	2015	4	154	4.4	13.50	14.00	0.50

Quintuple system
5 visible stars in this system

Precise pa

198.8

Precise sep

10.644

Constellation

Cygnus

Gaia DR2

31562245632

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20027+3355	BKO 522	AD	2008	1	199	10.8	12.50	13.50		N	200240.29+335506.0
20027+3355	BKO 522	AD	2015	4	199	10.6	12.50	13.50		N	200240.29+335506.0

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