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	2020		Obs	162
Pa first	348		Pa last	354		P.A. Now (θ)	355.1°
Sep first	5.4		Sep last	3.5		Sep. Now (ρ)	3.49"
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)

Visually invisible, K-band or other infrared star 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	2019	7	339	0.2	7.20	10.60	3.40
Show		105560	20014+1045	STF2613	AB	1828	2020	162	355	3.5	7.48	8.02	0.54	Y	<===

Triple system
2 visible stars in this system

Precise pa	354.3		Precise sep	3.52		Constellation	Aquila		SAO	105560
HIP	98578		Tycho2	1075-03270-1		Gaia DR2	30575555968		HD	189783
ADS	13256		BD	BD+10 4143		Distance	80.58		Distance ly	262.85
last precise pa	354.3		last precise sep	3.52

Period (P)	2106.0989y	± 839.4974	Periastron (T)	2220.5498y	± 207.1297	Semi-major axis (a)	4.54412a	± 2.37261
Eccentricity (e)	0.65213	± 0.25361	Inclination (i)	74.956°	± 7.741	Longitude of periastron (ω)	290.393°	± 21.204
Node (Ω)	175.719°	± 11.983	Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox			Last observation	2015

label rho theta 2000 3.682 354.0 2001 3.673 354.1 2002 3.664 354.1 2003 3.655 354.2 2004 3.645 354.2 2005 3.636 354.3 2006 3.627 354.3 2007 3.617 354.4 2008 3.608 354.4 2009 3.598 354.5 2010 3.589 354.6 2011 3.579 354.6 2012 3.569 354.7 2013 3.560 354.7 2014 3.550 354.8 2015 3.540 354.8 2016 3.530 354.9 2017 3.520 354.9 2018 3.510 355.0 2019 3.500 355.0 2020 3.490 355.1 2021 3.479 355.2 2022 3.469 355.2 2023 3.459 355.3 2024 3.448 355.3 2025 3.438 355.4 2026 3.427 355.5 2027 3.416 355.5 2028 3.406 355.6 2029 3.395 355.6 2030 3.384 355.7 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
20014+1045	STF2613	AB	2019	161	355	3.5	7.48	8.02	F5V+F5V	NO	200126.66+104454.8
20014+1045	STF2613	AB	2020	162	354	3.5	7.48	8.02	F5V+F5V	NO	200126.66+104454.8

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