19404+3121 COU 1163 Aa,Ab

19^h 40^m 21.57^s +31° 21' 26.4" P.A. 166.00 sep 0.1 mag 9.50,9.50 Sp F8V

Coord 2000	19404+3121		Discov num	COU1163		Comp	Aa,Ab		Coord arcsec 2000	19 40 21.57 +31 21 26.4
Date first	1974		Date last	2012		Obs	8
Pa first	168		Pa last	165.7		P.A. Now (θ)	165.7°
Sep first	0.2		Sep last	0.143		Sep. Now (ρ)	0.143"
Mag pri	9.50		Mag sec	9.50		delta mag (ΔM)	0		Spectral class	F8V (yellow-white)
Pri motion ra	+008		Sec motion ra
Pri motion dec	+007		Sec motion dec
Notes

Nature of this double is uncertain.

19404+3121 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		68670	19 40 22 +31 21 26	COU 1163 Aa,Ab	2012	8	166	0.1	9.50	9.50	0.00		<===
Show	HD 331099	68670	19 40 22 +31 21 26	SEI 657 AB	2017	13	356	19.3	8.91	11.01	2.10

Triple system
2 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Cygnus		SAO	68670		Tycho2	2656-04841-1		Gaia DR2	2033142689388971904
HD	331099