20106+3338 STT 541 BC

20^h 10^m 38.34^s +33° 37' 50.7" P.A. 184.00 sep 1.8 mag 8.43,9.73 Sp B8V dist. 444.44 pc (1449.76 l.y.)

Coord 2000	20106+3338		Discov num	STT 541		Comp	BC		Coord arcsec 2000	20 10 38.34 +33 37 50.7
Date first	1840		Date last	2021		Obs	26
Pa first	194		Pa last	184.3		P.A. Now (θ)	184.3°
Sep first	1.5		Sep last	1.75		Sep. Now (ρ)	1.75"
Mag pri	8.43		Mag sec	9.73		delta mag (ΔM)	1.3		Spectral class	B8V (blue-white)
Pri motion ra	-003		Sec motion ra	-003
Pri motion dec	+000		Sec motion dec	+000
Notes	N (See Notes)

Nature of this double is uncertain.

20106+3338 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 191812	69553	20 10 35 +33 38 03	S 738 AB	2021	44	106	42.4	7.76	8.43	0.67
Show		69554	20 10 38 +33 37 51	STT 541 BC	2021	26	184	1.8	8.43	9.73	1.30		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Cygnus		SAO	69554		HIP	99416		Tycho2	2675-03000-1
Gaia DR2	2055252734321271296		HD	191813		GC	28007		BD	BD+33 3780
Distance	444.44		Distance ly	1449.76