20064+3558 BUP 204AB (27 Cyg)

Coord 2000	20064+3558		Discov num	BUP 204		Comp	AB		Coord arcsec 2000	20 06 21.76 +35 58 20.8
Date first	1896		Date last	2013		Obs	6
Pa first	80		Pa last	36		P.A. Now (θ)	36°
Sep first	12.0		Sep last	64.9		Sep. Now (ρ)	64.9"
Mag pri	5.48		Mag sec	13.80		delta mag (ΔM)	8.32		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_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	27 Cyg	69413	20064+3558	BUP 204	AB	1896	2013	6	36	64.9	5.48	13.80	8.32		<===
Show			20064+3558	BUP 204	AC	1909	2015	6	77	42.7	5.48	11.70	6.22
Show			20064+3558	OPI 21	AD	1924	1924	1	130	35.0	5.48	12.70	7.22

Quadruple system
4 visible stars in this system

Precise pa	35.8		Precise sep	64.922		Name	27 Cyg		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	BUP 204	AB	1924	3	53	23.2	5.48	13.80	K0IV	N	200621.76+355820.8
20064+3558	BUP 204	AB	2002	6	37	59.0	5.48	13.80	K0IV	N	200621.76+355820.8
20064+3558	BUP 204	AB	2013	7	36	64.9	5.48	13.80	K0IV	N	200621.76+355820.8

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