20568+4254 ENG 77 BC

20^h 56^m 43.34^s +42° 55' 09.9" P.A. 69.00 sep 102.7 mag 10.16,9.13

Coord 2000	20568+4254		Discov num	ENG 77		Comp	BC		Coord arcsec 2000	20 56 43.34 +42 55 09.9
Date first	1892		Date last	2014		Obs	16
Pa first	69		Pa last	69.2		P.A. Now (θ)	69.2°
Sep first	83.8		Sep last	102.702		Sep. Now (ρ)	102.702"
Mag pri	10.16		Mag sec	9.13		delta mag (ΔM)	1.03		Spectral class
Pri motion ra	-152		Sec motion ra	-006
Pri motion dec	-064		Sec motion dec	-013
Notes	N L (See Notes, Linear solution)

rPM=0.938

This double is not physical.

20568+4254 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 199580	50265	20 56 48 +42 53 44	ENG 77 AB	2002	11	328	100.0	7.31	10.16	2.85
Show		50265	20 56 48 +42 53 44	ENG 77 AC	2012	18	17	125.8	7.31	9.13	1.82
Show			20 56 43 +42 55 10	ENG 77 BC	2014	16	69	102.7	10.16	9.13	1.03		<===
Show			20 56 52 +42 55 46	ENG 77 CD	2015	14	356	92.9	9.13	11.06	1.93

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3175-00317-1

Gaia DR2

2162027609856853760