20089+6205 STF2652

Coord 2000	20089+6205		Discov num	STF2652		Comp			Coord arcsec 2000	20 08 56.80 +62 04 36.0
Date first	1831		Date last	2006		Obs	74
Pa first	285		Pa last	210		P.A. Now (θ)	204.2°
Sep first	0.5		Sep last	0.3		Sep. Now (ρ)	0.31"
Mag pri	7.29		Mag sec	7.78		delta mag (ΔM)	0.49		Spectral class	A0V (white)
Pri motion ra	+012		Sec motion ra
Pri motion dec	-019		Sec motion dec
Notes	O (Orbital solution)

This double is physical.

Precise pa	209.5		Precise sep	0.311		Constellation	Draco		SAO	18732
HIP	99257		Tycho2	4236-01106-1		Gaia DR2	66972481792		HD	191940
ADS	13449		BD	BD+61 1975		Distance	252.53		Distance ly	823.75
last precise pa	209.5		last precise sep	0.311

Period (P)	495y		Periastron (T)	2185y		Semi-major axis (a)	0.495a
Eccentricity (e)	0.72		Inclination (i)	111.2°		Longitude of periastron (ω)	85.8°
Node (Ω)	141.3°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2005

label rho theta 2000 0.307 213.1 2001 0.308 212.6 2002 0.308 212.1 2003 0.308 211.6 2004 0.308 211.2 2005 0.309 210.7 2006 0.309 210.2 2007 0.309 209.8 2008 0.310 209.3 2009 0.310 208.8 2010 0.310 208.4 2011 0.311 207.9 2012 0.311 207.4 2013 0.311 207.0 2014 0.312 206.5 2015 0.312 206.1 2016 0.313 205.6 2017 0.313 205.1 2018 0.313 204.7 2019 0.314 204.2 2020 0.314 203.8 2021 0.315 203.3 2022 0.315 202.9 2023 0.315 202.4 2024 0.316 202.0 2025 0.316 201.5 2026 0.317 201.1 2027 0.317 200.6 2028 0.318 200.2 2029 0.318 199.8 2030 0.319 199.3 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
20089+6205	STF2652		2005	73	207	0.3	7.29	7.78	A0V	D	200856.80+620436.0
20089+6205	STF2652		2006	74	210	0.3	7.29	7.78	A0V	O	200856.80+620436.0

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