20064+3558 OPI  21AD

Coord 2000	20064+3558		Discov num	OPI  21		Comp	AD		Coord arcsec 2000	20 06 21.76 +35 58 20.8
Date first	1924		Date last	1924		Obs	1
Pa first	130		Pa last	130		P.A. Now (θ)	130°
Sep first	35.0		Sep last	35.0		Sep. Now (ρ)	35"
Mag pri	5.48		Mag sec	12.70		delta mag (ΔM)	7.22		Spectral class	K0IV (yellow-orange)
Pri motion ra	-221		Sec motion ra
Pri motion dec	-444		Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	27 Cyg	69413	20 06 22 +35 58 21	BUP 204 AB	2013	6	36	64.9	5.48	13.80	8.32
Show		69413	20 06 22 +35 58 21	BUP 204 AC	2015	6	77	42.7	5.48	11.70	6.22
Show		69413	20 06 22 +35 58 21	OPI 21 AD	1924	1	130	35.0	5.48	12.70	7.22		<===

Quadruple system
4 visible stars in this system

Precise pa	130		Precise sep	35		Other name	b1 Cyg		Var name	V2008 Cyg
Constellation	Cygnus		SAO	69413		HIP	99031		Tycho2	2683-03963-1
HD	191026		HR	7689		GC	27904		BD	BD+35 3959
Flamsteed	27 Cygni		Flamsteed name	27 Cyg		Distance	23.95		Distance ly	78.12

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20064+3558	OPI 21	AD	1924	1	130	35.0	5.48	12.70	K0IV	N	200621.76+355820.8
20064+3558	OPI 21	AD	1998	2	131	34.3	5.48	12.70		D	200621.76+355820.8
20064+3558	OPI 21	AD	2010	3	79	41.1	5.48	12.70	K0IV	N	200621.76+355820.8

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