20014+1045 STF2613AB

Coord 2000	20014+1045		Discov num	STF2613		Comp	AB		Coord arcsec 2000	20 01 26.66 +10 44 54.8
Date first	1828		Date last	2017		Obs	158
Pa first	348		Pa last	356		P.A. Now (θ)	352.1°
Sep first	5.4		Sep last	3.5		Sep. Now (ρ)	4.14"
Mag pri	7.48		Mag sec	8.02		delta mag (ΔM)	0.54		Spectral class	F5V+F5V (yellow-white/yellow-white)
Pri motion ra	+084		Sec motion ra	+084
Pri motion dec	+025		Sec motion dec	+025
Notes	N O (See Notes, Orbital solution)

This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		105560	20014+1045	TOK 34	Aa,Ab	2005	2017	5	341	0.3	7.20	10.60	3.40
Show		105560	20014+1045	STF2613	AB	1828	2017	158	352	4.1	7.48	8.02	0.54	Y	<===

Triple system
2 visible stars in this system

Precise pa	355.7		Precise sep	3.522		Constellation	Aquila		SAO	105560
HIP	98578		Tycho2	1075-03270-1		Gaia DR2	4300710530575555968		HD	189783
ADS	13256		BD	BD+10 4143		Distance	80.58		Distance ly	262.85
last precise pa	355.7		last precise sep	3.522

Period (P)	2356y		Periastron (T)	888y		Semi-major axis (a)	3.822a
Eccentricity (e)	0.67		Inclination (i)	81.5°		Longitude of periastron (ω)	52.2°
Node (Ω)	162°		Note			Grade	5	(1=Definitive, 9=Indet.)
Equinox			Last observation

label rho theta 2000 4.197 351.8 2001 4.194 351.8 2002 4.190 351.9 2003 4.187 351.9 2004 4.184 351.9 2005 4.181 351.9 2006 4.178 351.9 2007 4.175 351.9 2008 4.172 351.9 2009 4.169 351.9 2010 4.166 352.0 2011 4.163 352.0 2012 4.160 352.0 2013 4.156 352.0 2014 4.153 352.0 2015 4.150 352.0 2016 4.147 352.0 2017 4.144 352.1 2018 4.141 352.1 2019 4.138 352.1 2020 4.134 352.1 2021 4.131 352.1 2022 4.128 352.1 2023 4.125 352.1 2024 4.122 352.2 2025 4.119 352.2 2026 4.115 352.2 2027 4.112 352.2 2028 4.109 352.2 2029 4.106 352.2 2030 4.102 352.2 Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20014+1045	STF2613	AB	2007	138	354	3.6	7.48	8.02	F5V+F5V	NOD	200126.66+104454.8
20014+1045	STF2613	AB	2009	140	354	3.5	7.48	8.02	F5V+F5V	NOD	200126.66+104454.8
20014+1045	STF2613	AB	2010	146	354	3.5	7.48	8.02	F5V+F5V	NOD	200126.66+104454.8
20014+1045	STF2613	AB	2011	147	355	3.5	7.48	8.02	F5V F5V	NOD	200126.66+104454.8
20014+1045	STF2613	AB	2012	147	354	3.6	7.48	8.02	F5V+F5V	NOD	200126.66+104454.8
20014+1045	STF2613	AB	2013	148	354	3.5	7.48	8.02	F5V+F5V	NOD	200126.66+104454.8
20014+1045	STF2613	AB	2015	150	355	3.6	7.48	8.02	F5V+F5V	NO	200126.66+104454.8
20014+1045	STF2613	AB	2016	152	355	3.6	7.48	8.02	F5V+F5V	NO	200126.66+104454.8
20014+1045	STF2613	AB	2017	157	356	3.5	7.48	8.02	F5V+F5V	NO	200126.66+104454.8

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