20011+4816 STF2619AB

Coord 2000	20011+4816		Discov num	STF2619		Comp	AB		Coord arcsec 2000	20 01 01.69 +48 15 28.5
Date first	1828		Date last	2017		Obs	73
Pa first	247		Pa last	242		P.A. Now (θ)	242°
Sep first	3.7		Sep last	5.4		Sep. Now (ρ)	5.4"
Mag pri	8.91		Mag sec	8.92		delta mag (ΔM)	0.01		Spectral class	G5 (yellow)
Pri motion ra	-084		Sec motion ra	-111
Pri motion dec	-079		Sec motion dec	-101
Notes

rPM=0.232 (< 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		49086	20011+4816	STF2619	AB	1828	2017	73	242	5.4	8.91	8.92	0.01		<===
Show		49086	20011+4816	STF2619	AC	1828	2017	20	352	20.2	8.91	12.60	3.69
Show		49086	20011+4816	STF2619	AD	2000	2017	7	352	14.8	8.91	13.90	4.99
Show		49086	20011+4816	DEA 60	AE	2000	2017	3	6	61.8	10.00	18.80	8.80
Show		49086	20011+4816	STF2619	BC	1878	2015	10	4	22.1	8.92	12.60	3.68
Show		49086	20011+4816	STF2619	BD	1901	2015	6	6	16.9	8.92	13.90	4.98
Show		49086	20011+4816	STF2619	CD	1854	2015	13	175	5.4	12.60	13.90	1.30

Quintuple system
5 visible stars in this system

Precise pa	241.9		Precise sep	5.407		Constellation	Cygnus		SAO	49086
HIP	98535		Tycho2	3562-00517-1		Gaia DR2	76129332224		HD	190042
BD	BD+47 2982		Distance	60.02		Distance ly	195.79

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20011+4816	STF2619	AB	2008	49	239	4.1	8.91	8.92	G5	D	200101.69+481528.5
20011+4816	STF2619	AB	2011	56	239	4.2	8.91	8.92	G5	D	200101.69+481528.5
20011+4816	STF2619	AB	2013	57	241	4.1	8.91	8.92	G5	D	200101.69+481528.5
20011+4816	STF2619	AB	2015	66	237	4.2	8.91	8.92	G5		200101.69+481528.5
20011+4816	STF2619	AB	2016	69	239	4.2	8.91	8.92	G5		200101.69+481528.5
20011+4816	STF2619	AB	2017	72	242	5.4	8.91	8.92	G5		200101.69+481528.5

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