20011+4816 STF2619AC

Coord 2000	20011+4816		Discov num	STF2619		Comp	AC		Coord arcsec 2000	20 01 01.69 +48 15 28.5
Date first	1828		Date last	2017		Obs	20
Pa first	280		Pa last	352		P.A. Now (θ)	352°
Sep first	12.0		Sep last	20.2		Sep. Now (ρ)	20.2"
Mag pri	8.91		Mag sec	12.60		delta mag (ΔM)	3.69		Spectral class	G5 (yellow)
Pri motion ra	-084		Sec motion ra
Pri motion dec	-079		Sec motion dec
Notes

Nature of this double is uncertain.

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	352.4		Precise sep	20.193		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	AC	1924	8	313	17.1	8.91	12.30	G5	D	200101.69+481528.5
20011+4816	STF2619	AC	2003	12	349	19.3	8.91	12.60	G5		200101.69+481528.5
20011+4816	STF2619	AC	2013	13	359	20.9	8.91	12.60	G5		200101.69+481528.5
20011+4816	STF2619	AC	2015	14	354	20.1	8.91	12.60	G5		200101.69+481528.5
20011+4816	STF2619	AC	2017	16	352	20.2	8.91	12.60	G5		200101.69+481528.5

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