19464+3344 STF 2576 FG

Coord 2000	19464+3344		Discov num	STF2576		Comp	FG		Coord arcsec 2000	19 45 33.53 +33 36 07.1
Date first	1828		Date last	2020		Obs	483
Pa first	144		Pa last	154.8		P.A. Now (θ)	153.7°
Sep first	2.8		Sep last	3.221		Sep. Now (ρ)	3.147"
Mag pri	8.47		Mag sec	8.58		delta mag (ΔM)	0.11		Spectral class	K5V+K5V (yellow-orange/yellow-orange)
Pri motion ra	+009		Sec motion ra	+036
Pri motion dec	-443		Sec motion dec	-452
Notes	N O T (See Notes, Orbital solution, Parallax indicates physical)

rPM=0.063 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Chi Cyg	68827	19 46 26 +33 43 39	STF 2580 AB	2020	155	68	25.9	5.06	9.25	4.19	Y
Show		68827	19 46 26 +33 43 39	STF 2580 AC	2020	40	122	106.3	5.06	9.44	4.38
Show		68827	19 46 26 +33 43 39	KPR 4 AD	1998	2	47	89.5	5.06	13.30	8.24
Show		68827	19 46 26 +33 43 39	KPR 4 AE	2012	7	63	105.7	5.06	11.98	6.92
Show		68827	19 46 26 +33 43 39	WNO 56 AF	2002	10	235	792.0	5.06	8.48	3.42	Y
Show			19 46 28 +33 43 48	STF 2580 BC	2016	23	139	100.8	9.25	9.44	0.19
Show		68799	19 46 28 +33 43 48	STF 2580 BG	2016	4	235	817.7	9.25	8.58	0.67
Show		68799	19 45 34 +33 36 07	STF 2576 FG	2020	483	155	3.2	8.47	8.58	0.11	Y	<===
Show		68799	19 45 34 +33 36 07	STF 2576 FH	2016	7	348	51.3	8.48	13.80	5.32
Show		68799	19 45 34 +33 36 07	STF 2576 FI	2016	12	333	34.6	8.48	12.40	3.92
Show		68799	19 45 34 +33 36 07	TKA 1 FJ	2016	5	235	23.3	8.48	11.70	3.22
Show		68799	19 45 34 +33 36 07	RAO 69 FK	2015	4	322	17.2	8.48	14.90	6.42
Show		68799	19 45 34 +33 36 04	STF 2576 GI	2016	4	334	37.3	8.58	12.40	3.82
Show		68799	19 45 34 +33 36 04	STF 2576 GJ	2016	7	242	22.5	8.58	11.70	3.12

11-fold system
11 estimated visually detectable stars in this system

Constellation	Cygnus		SAO	68799		HIP	97222		Tycho2	2660-00031-1
HD	186858		GC	27350		ADS	12889		GL	Gl 765.4A
BD	BD+33 3582		Distance	21.12		Distance ly	68.89

Period (P)	232y		Periastron (T)	1945.3y		Semi-major axis (a)	2.07a
Eccentricity (e)	0.77		Inclination (i)	156°		Longitude of periastron (ω)	128°
Node (Ω)	91°		Notes	n		Reference	Sod1999
Equinox	2000		Last observation			Grade	2	(1=Definitive, 9=Indet.)

label theta rho 2000 164.1 2.686 2001 163.6 2.711 2002 163.1 2.735 2003 162.6 2.759 2004 162.0 2.782 2005 161.5 2.805 2006 161.1 2.828 2007 160.6 2.850 2008 160.1 2.871 2009 159.6 2.893 2010 159.2 2.913 2011 158.7 2.934 2012 158.3 2.954 2013 157.8 2.973 2014 157.4 2.992 2015 157.0 3.011 2016 156.5 3.030 2017 156.1 3.047 2018 155.7 3.065 2019 155.3 3.082 2020 154.9 3.099 2021 154.5 3.115 2022 154.1 3.131 2023 153.7 3.147 2024 153.3 3.162 2025 152.9 3.177 2026 152.5 3.191 2027 152.2 3.205 2028 151.8 3.219 2029 151.4 3.232 2030 151.1 3.245		Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic