20137+4323 BU  660AC

Coord 2000	20137+4323		Discov num	BU  660		Comp	AC		Coord arcsec 2000	20 13 42.81 +43 22 44.4
Date first	1892		Date last	2015		Obs	11
Pa first	190		Pa last	190		P.A. Now (θ)	190°
Sep first	56.5		Sep last	58.2		Sep. Now (ρ)	58.2"
Mag pri	6.29		Mag sec	12.92		delta mag (ΔM)	6.63		Spectral class	K3III (yellow-orange)
Pri motion ra	-004		Sec motion ra	-004
Pri motion dec	+004		Sec motion dec	-008
Notes

rPM=1.342 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		49336	20137+4323	BU 660	AB	1878	2015	13	318	8.7	6.29	12.70	6.41
Show			20137+4323	BU 660	AC	1892	2015	11	190	58.2	6.29	12.92	6.63		<===
Show			20137+4323	FOX 250	AD	1914	2015	5	279	31.5	6.29	14.70	8.41

Quadruple system
4 visible stars in this system

Precise pa	189.6		Precise sep	58.231		Constellation	Cygnus		SAO	49336
HIP	99685		Tycho2	3163-01634-1		Gaia DR2	96848794368		HD	192535
HR	7733		BD	BD+42 3642		Distance	208.77		Distance ly	681.01

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20137+4323	BU 660	AC	2000	5	190	58.2	6.20	11.20	K3III	D	201342.82+432244.4
20137+4323	BU 660	AC	2003	7	190	57.3	6.29	12.90	K3III	D	201342.81+432244.4
20137+4323	BU 660	AC	2013	8	190	58.2	6.29	12.92	K3III		201342.81+432244.4
20137+4323	BU 660	AC	2014	10	190	58.2	6.29	12.92	K3III		201342.81+432244.4
20137+4323	BU 660	AC	2015	11	190	58.2	6.29	12.92	K3III		201342.81+432244.4

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