20007+3635 WEB   9AB

Coord 2000	20007+3635		Discov num	WEB   9		Comp	AB		Coord arcsec 2000	20 00 44.81 +36 35 23.0
Date first	1896		Date last	2016		Obs	22
Pa first	203		Pa last	202		P.A. Now (θ)	202°
Sep first	70.5		Sep last	71.6		Sep. Now (ρ)	71.6"
Mag pri	6.69		Mag sec	8.97		delta mag (ΔM)	2.28		Spectral class	B6IV (blue-white)
Pri motion ra	+004		Sec motion ra	-001
Pri motion dec	-001		Sec motion dec	-005
Notes	N (See Notes)

rPM=1.256 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		69252	20 00 45 +36 35 23	HDS 2851 Aa,Ab	2011	2	171	0.4	6.76	9.75	2.99
Show		69252	20 00 45 +36 35 23	WEB 9 AB	2016	22	202	71.6	6.69	8.97	2.28		<===
Show		69252	20 00 45 +36 35 23	WEB 9 AC	2004	12	220	82.1	6.69	9.84	3.15
Show		69251	20 00 43 +36 34 17	WEB 9 BC	2018	21	279	26.3	8.97	9.84	0.87
Show		69251	20 00 40 +36 34 20	WEB 9 CD	2018	13	325	13.9	9.84	10.30	0.46

Quintuple system
4 visible stars in this system

Precise pa	202		Precise sep	71.6		Constellation	Cygnus		SAO	69252
HIP	98510		Tycho2	2682-02072-1		Gaia DR2	2060120375407807744		HD	189864
BD	BD+36 3816		Distance	254.45		Distance ly	830.02

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20007+3635	WEB 9	AB	2004	17	203	71.1	6.69	8.97	B6IV	D	200044.81+363523.0
20007+3635	WEB 9	AB	2005	21	202	71.5	6.69	8.97	B6IV		200044.81+363523.0
20007+3635	WEB 9	AB	2016	22	202	71.6	6.69	8.97	B6IV		200044.81+363523.0

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