20169+3130 HO  588AB

Coord 2000	20169+3130		Discov num	HO  588		Comp	AB		Coord arcsec 2000	20 16 54.99 +31 30 18.7
Date first	1893		Date last	2018		Obs	29
Pa first	298		Pa last	297		P.A. Now (θ)	297°
Sep first	50.7		Sep last	50.8		Sep. Now (ρ)	50.8"
Mag pri	6.91		Mag sec	8.89		delta mag (ΔM)	1.98		Spectral class	A0III (white)
Pri motion ra	-008		Sec motion ra	-009
Pri motion dec	-012		Sec motion dec	-014
Notes

rPM=0.134 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		69743	20169+3130	HO 588	AB	1893	2018	29	297	50.8	6.91	8.89	1.98		<===
Show		69741	20169+3130	HO 588	BC	1896	2015	13	30	8.7	8.89	12.60	3.71

Triple system
3 visible stars in this system

Precise pa	297.3		Precise sep	50.761		Constellation	Cygnus		SAO	69743
HIP	99967		Tycho2	2672-02200-1		Gaia DR2	48687794048		HD	193010
BD	BD+31 4020		Distance	189.39		Distance ly	617.79

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20169+3130	HO 588	AB	2003	21	297	50.3	6.91	8.89	A0III	D	201654.99+313018.7
20169+3130	HO 588	AB	2012	23	297	50.8	6.91	8.89	A0III	D	201654.99+313018.7
20169+3130	HO 588	AB	2015	24	297	51.1	6.91	8.89	A0III		201654.99+313018.7
20169+3130	HO 588	AB	2016	25	297	50.8	6.91	8.89	A0III		201654.99+313018.7
20169+3130	HO 588	AB	2017	26	298	51.1	6.91	8.89	A0III		201654.99+313018.7
20169+3130	HO 588	AB	2018	29	297	50.8	6.91	8.89	A0III		201654.99+313018.7

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