20021+5439 BU  426AC

Coord 2000	20021+5439		Discov num	BU  426		Comp	AC		Coord arcsec 2000	20 02 07.92 +54 38 28.0
Date first	1877		Date last	2015		Obs	17
Pa first	53		Pa last	53		P.A. Now (θ)	53°
Sep first	166.2		Sep last	163.2		Sep. Now (ρ)	163.2"
Mag pri	8.53		Mag sec	8.39		delta mag (ΔM)	0.14		Spectral class	K0 (yellow-orange)
Pri motion ra	+016		Sec motion ra	+001
Pri motion dec	+018		Sec motion dec	-006
Notes	N (See Notes)

rPM=1.175 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		32226	20 02 08 +54 38 28	BU 426 AB	2016	25	307	5.9	8.53	10.50	1.97
Show		32226	20 02 08 +54 38 28	BU 426 AC	2015	17	53	163.2	8.53	8.39	0.14		<===
Show		32226	20 02 23 +54 40 08	BU 427 CD	2011	15	336	3.1	8.39	10.18	1.79
Show		32226	20 02 23 +54 40 08	ENG 68 CE	2015	13	158	160.3	8.39	8.92	0.53
Show		32230	20 02 30 +54 37 39	MLR 580 EF	2008	3	159	0.6	8.90	13.20	4.30

Sextuple system
6 visible stars in this system

Precise pa	52.5		Precise sep	163.181		Constellation	Cygnus		SAO	32226
Tycho2	3940-00110-1		Gaia DR2	2185777855590109312		HD	190398

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20021+5439	BU 426	AC	1999	14	52	162.3	8.53	8.39	K0	D	200207.92+543828.0
20021+5439	BU 426	AC	2009	15	53	162.9	8.53	8.39	K0	D	200207.92+543828.0
20021+5439	BU 426	AC	2015	17	53	163.2	8.53	8.39	K0	N	200207.92+543828.0

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