19555+4140 KOI 1689 AC

Coord 2000	19555+4140		Discov num	KOI1689		Comp	AC		Coord arcsec 2000	19 55 32.15 +41 39 43.4
Date first	2010		Date last	2010		Obs	1
Pa first	55		Pa last	54.5		P.A. Now (θ)	54.5°
Sep first	3.8		Sep last	3.831		Sep. Now (ρ)	3.831"
Mag pri	13.40		Mag sec	17.30		delta mag (ΔM)	3.9		Spectral class
Pri motion ra	+007		Sec motion ra
Pri motion dec	+010		Sec motion dec
Notes	K (K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			19 55 32 +41 39 43	KOI 1689 AB	2015	2	171	2.8	13.40	17.50	4.10
Show			19 55 32 +41 39 43	KOI 1689 AC	2010	1	55	3.8	13.40	17.30	3.90		<===

Triple system
3 estimated visually detectable stars in this system

Constellation

Cygnus

Gaia DR2

2075345587766722944