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	2015		Obs	68
Pa first	247		Pa last	237		P.A. Now (θ)	237°
Sep first	3.7		Sep last	4.2		Sep. Now (ρ)	4.2"
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	2015	68	237	4.2	8.91	8.92	0.01		<===
Show		49086	20011+4816	STF2619	AC	1828	2015	14	354	20.1	8.91	12.60	3.69
Show		49086	20011+4816	DEA 60	AE	2000	2000	1	7	61.7	6.70	12.45	5.75
Show		49086	20011+4816	STF2619	BC	1878	2015	9	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	8	175	5.4	12.60	13.90	1.30

Quintuple system
5 visible stars in this system

Precise pa	237.3		Precise sep	4.15		Constellation	Cygnus		SAO	49086
HIP	98535		Tycho2	3562-00517-1		HD	190042		BD	BD+47 2982
Distance	60.02		Distance ly	195.79		last precise pa	239.4		last precise sep	4.165

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

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