20106+3452 A   281AB

Coord 2000	20106+3452		Discov num	A   281		Comp	AB		Coord arcsec 2000	20 10 36.85 +34 52 03.9
Date first	1901		Date last	2018		Obs	45
Pa first	172		Pa last	173		P.A. Now (θ)	173°
Sep first	3.7		Sep last	4.2		Sep. Now (ρ)	4.2"
Mag pri	9.01		Mag sec	9.45		delta mag (ΔM)	0.44		Spectral class	F7V (yellow-white)
Pri motion ra	+025		Sec motion ra	+027
Pri motion dec	-010		Sec motion dec	-045
Notes

rPM=0.668 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 10 37 +34 52 04	A 281 AB	2018	45	173	4.2	9.01	9.45	0.44		<===
Show			20 10 37 +34 52 04	ARN 96 AC	2015	10	314	63.6	9.01	9.78	0.77

Triple system
3 visible stars in this system

Precise pa	172.8		Precise sep	4.198		Constellation	Cygnus		HIP	99411
Tycho2	2679-00394-1		Gaia DR2	2058751272937906048		HD	191833		BD	BD+34 3899
Distance	171.53		Distance ly	559.53

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20106+3452	A 281	AB	2008	37	172	4.1	9.01	9.45	F7V	D	201036.85+345203.9
20106+3452	A 281	AB	2011	41	172	4.1	9.01	9.45	F7V	D	201036.85+345203.9
20106+3452	A 281	AB	2016	41	172	4.2	9.01	9.45	F7V	W	201036.85+345203.9
20106+3452	A 281	AB	2018	43	173	4.2	9.01	9.45	F7V	W	201036.85+345203.9

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