20123+3451 AG 249 AB (HD 192164)

20^h 12^m 18.31^s +34° 51' 10.7" P.A. 133.00 sep 32.9 mag 7.96,10.78 Sp K2V dist. 531.91 pc (1735.09 l.y.)

Coord 2000	20123+3451		Discov num	AG 249		Comp	AB		Coord arcsec 2000	20 12 18.31 +34 51 10.7
Date first	1896		Date last	2015		Obs	17
Pa first	133		Pa last	132.7		P.A. Now (θ)	132.7°
Sep first	34.6		Sep last	32.882		Sep. Now (ρ)	32.882"
Mag pri	7.96		Mag sec	10.78		delta mag (ΔM)	2.82		Spectral class	K2V (yellow-orange)
Pri motion ra	+016		Sec motion ra	+002
Pri motion dec	-007		Sec motion dec	-002
Notes	W

rPM=0.851

This double is not physical.

20123+3451 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 192164	69595	20 12 18 +34 51 11	AG 249 AB	2015	17	133	32.9	7.96	10.78	2.82		<===
Show		69595	20 12 18 +34 51 11	AG 249 AC	2015	7	30	13.0	7.96	14.00	6.04
Show			20 12 19 +34 51 22	AG 249 CD	2015	6	352	6.3	14.00	13.80	0.20

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	HD 192164		Constellation	Cygnus		SAO	69595		HIP	99562
Tycho2	2679-02011-1		Gaia DR2	2055751122339016064		HD	192164		BD	BD+34 3910
Distance	531.91		Distance ly	1735.09