20307+3521 HJ 1526A,BC

Coord 2000	20307+3521		Discov num	HJ 1526		Comp	A,BC		Coord arcsec 2000	20 30 40.68 +35 20 53.2
Date first	1828		Date last	2018		Obs	28
Pa first	154		Pa last	149		P.A. Now (θ)	149°
Sep first	8.0		Sep last	8.8		Sep. Now (ρ)	8.8"
Mag pri	9.00		Mag sec	9.26		delta mag (ΔM)	0.26		Spectral class	A2 (white)
Pri motion ra	+007		Sec motion ra	+009
Pri motion dec	+008		Sec motion dec	+010
Notes	N (See Notes)

rPM=0.21 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 30 41 +35 20 53	HJ 1526 A,BC	2018	28	149	8.8	9.00	9.26	0.26		<===
Show			20 30 41 +35 20 46	HU 760 BC	2012	10	67	0.3	9.80	10.40	0.60

Triple system
4 visible stars in this system

Precise pa	148.9		Precise sep	8.782		Constellation	Cygnus		Tycho2	2693-00788-1
Gaia DR2	2056585273691978112		HD	195530

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20307+3521	HJ 1526	A,BC	2008	19	149	8.8	9.00	9.26	A2	D	203040.68+352053.2
20307+3521	HJ 1526	A,BC	2010	21	145	8.5	9.00	9.26	A2		203040.68+352053.2
20307+3521	HJ 1526	A,BC	2018	22	149	8.8	9.00	9.26	A2	N	203040.68+352053.2

If you need more information about this double, apply for a data request form to the WDS.