20055+4037 WFC 228

Coord 2000	20055+4037		Discov num	WFC 228		Comp			Coord arcsec 2000	20 05 27.84 +40 36 56.2
Date first	1892		Date last	2015		Obs	12
Pa first	137		Pa last	167		P.A. Now (θ)	167°
Sep first	9.0		Sep last	13.7		Sep. Now (ρ)	13.7"
Mag pri	11.35		Mag sec	11.88		delta mag (ΔM)	0.53		Spectral class
Pri motion ra	+021		Sec motion ra	-004
Pri motion dec	+050		Sec motion dec	-003
Notes	L (Linear solution)

Visually invisible, K-band or other infrared star rPM=1.081 This double is not physical.

Precise pa	167		Precise sep	13.676		Constellation	Cygnus		Tycho2	3154-01573-1
Gaia DR2	84878727296

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20055+4037	WFC 228		1892	2	137	9.1	11.35	11.88			200527.84+403656.2
20055+4037	WFC 228		2002	5	165	13.0	11.35	11.88			200527.84+403656.2
20055+4037	WFC 228		2015	7	167	13.7	11.35	11.88			200527.84+403656.2

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