20010+3742 BU 1289AC

Coord 2000	20010+3742		Discov num	BU 1289		Comp	AC		Coord arcsec 2000	20 00 59.61 +37 41 56.1
Date first	1896		Date last	2003		Obs	24
Pa first	90		Pa last	89		P.A. Now (θ)	89°
Sep first	21.4		Sep last	21.7		Sep. Now (ρ)	21.7"
Mag pri	8.15		Mag sec	9.70		delta mag (ΔM)	1.55		Spectral class	B5 (blue-white)
Pri motion ra	-007		Sec motion ra	-007
Pri motion dec	-009		Sec motion dec	+033
Notes

rPM=1.245 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		69258	20010+3742	BU 1289	AB	1899	2016	21	55	0.7	8.15	9.20	1.05
Show		69258	20010+3742	BU 1289	AC	1896	2003	24	89	21.7	8.15	9.70	1.55		<===
Show		69258	20010+3742	FOX 246	AB,D	1896	2002	8	170	104.3	8.15	11.17	3.02
Show		69258	20010+3742	WAL 125	AB,E	1944	2002	3	10	46.6	8.15	13.52	5.37

Quintuple system
6 visible stars in this system

Precise pa	89.2		Precise sep	21.73		Constellation	Cygnus		SAO	69258
HIP	98528		Tycho2	3150-02606-1		HD	189901		BD	BD+37 3723
Distance	469.48		Distance ly	1531.44		last precise pa	89.2		last precise sep	21.73

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20010+3742	BU 1289	AC	2003	23	89	21.7	8.15	9.70		D	200059.61+374156.1

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