20000+4737 CBL  81

Coord 2000	20000+4737		Discov num	CBL  81		Comp			Coord arcsec 2000	20 00 14.11 +47 37 09.0
Date first	1902		Date last	2015		Obs	13
Pa first	258		Pa last	257		P.A. Now (θ)	257°
Sep first	43.9		Sep last	44.0		Sep. Now (ρ)	44"
Mag pri	9.62		Mag sec	10.75		delta mag (ΔM)	1.13		Spectral class	G5 (yellow)
Pri motion ra	+067		Sec motion ra	+067
Pri motion dec	+067		Sec motion dec	+065
Notes	V W (Proper motion indicates physical, )

Visually invisible, K-band or other infrared star rPM=0.021 (< 0.3, Physical double) This double is physical.

Precise pa	256.7		Precise sep	43.976		Constellation	Cygnus		SAO	49073
Tycho2	3562-01111-1		Gaia DR2	52310886400

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20000+4737	CBL 81		1998	6	257	43.9	9.50	10.70		VD	200014.11+473709.0
20000+4737	CBL 81		2011	7	257	44.0	9.50	10.70		VD	200014.11+473709.0
20000+4737	CBL 81		2015	9	257	44.1	9.62	10.75	G5	VW	200014.11+473709.0

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