20358+5435 ES 991 AC

20^h 35^m 45.34^s +54° 35' 16.7" P.A. 106.00 sep 61.7 mag 9.33,10.79 Sp K7

Coord 2000	20358+5435		Discov num	ES 991		Comp	AC		Coord arcsec 2000	20 35 45.34 +54 35 16.7
Date first	1901		Date last	2018		Obs	11
Pa first	103		Pa last	106.3		P.A. Now (θ)	106.3°
Sep first	64.7		Sep last	61.721		Sep. Now (ρ)	61.721"
Mag pri	9.33		Mag sec	10.79		delta mag (ΔM)	1.46		Spectral class	K7 (yellow-orange)
Pri motion ra	-002		Sec motion ra	-038
Pri motion dec	-005		Sec motion dec	-034
Notes

rPM=0.907

This double is not physical.

20358+5435 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 235289	32720	20 35 45 +54 35 17	ES 991 AB	2018	14	297	15.9	9.33	10.30	0.97
Show		32720	20 35 45 +54 35 17	ES 991 AC	2018	11	106	61.7	9.33	10.79	1.46		<===
Show			20 35 52 +54 34 60	ES 991 CD	2016	5	120	2.6	10.79	13.20	2.41

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Cygnus		SAO	32720		Tycho2	3954-01980-1		Gaia DR2	2183467163189146112
HD	235289