20255+4006 POP 224AD

Coord 2000	20255+4006		Discov num	POP 224		Comp	AD		Coord arcsec 2000	20 25 31.16 +40 05 50.8
Date first	1928		Date last	2009		Obs	6
Pa first	97		Pa last	98		P.A. Now (θ)	98°
Sep first	77.6		Sep last	71.2		Sep. Now (ρ)	71.2"
Mag pri	8.15		Mag sec	11.58		delta mag (ΔM)	3.43		Spectral class	F8V (yellow-white)
Pri motion ra	+092		Sec motion ra	-005
Pri motion dec	+019		Sec motion dec	-005
Notes

rPM=1.064 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20255+4006	D 22	AB	1875	2016	71	163	2.9	8.15	9.48	1.33
Show			20255+4006	D 22	AC	1905	1998	5	114	18.1	8.15	13.20	5.05
Show			20255+4006	POP 224	AD	1928	2009	6	98	71.2	8.15	11.58	3.43		<===

Quadruple system
4 visible stars in this system

Precise pa	97.5		Precise sep	71.2		Constellation	Cygnus		SAO	70001
Tycho2	3156-00437-1		Gaia DR2	01017759616		HD	194685

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20255+4006	POP 224	AD	1991	4	98	72.5	8.15	11.58	F8V		202531.14+400553.7
20255+4006	POP 224	AD	2009	5	98	71.2	8.15	11.58	F8V		202531.14+400553.7

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