00205+4531 A   647

Coord 2000	00205+4531		Discov num	A   647		Comp			Coord arcsec 2000	00 20 33.00 +45 30 32.2
Date first	1904		Date last	2009		Obs	38
Pa first	216		Pa last	102		P.A. Now (θ)	91.8°
Sep first	0.7		Sep last	0.7		Sep. Now (ρ)	0.73"
Mag pri	7.17		Mag sec	9.56		delta mag (ΔM)	2.39		Spectral class	F5 (yellow-white)
Pri motion ra	+064		Sec motion ra	+064
Pri motion dec	-018		Sec motion dec	-018
Notes	O (Orbital solution)

This double is physical.

Precise pa	102.1		Precise sep	0.697		Constellation	Andromeda		SAO	36280
HIP	1642		Tycho2	3247-00013-1		Gaia DR2	1171018624		HD	1614
ADS	277		BD	BD+44 62		Distance	114.03		Distance ly	371.97
last precise pa	102.1		last precise sep	0.697

Period (P)	372.7y		Periastron (T)	1876.01y		Semi-major axis (a)	0.947a
Eccentricity (e)	0.292		Inclination (i)	122°		Longitude of periastron (ω)	136.8°
Node (Ω)	39.4°		Note			Grade	5	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2006

label rho theta 2000 0.625 110.2 2001 0.630 109.1 2002 0.634 108.0 2003 0.639 106.9 2004 0.644 105.8 2005 0.649 104.8 2006 0.655 103.8 2007 0.660 102.7 2008 0.665 101.7 2009 0.671 100.8 2010 0.677 99.8 2011 0.682 98.8 2012 0.688 97.9 2013 0.694 97.0 2014 0.700 96.1 2015 0.706 95.2 2016 0.712 94.3 2017 0.718 93.5 2018 0.724 92.6 2019 0.730 91.8 2020 0.737 91.0 2021 0.743 90.2 2022 0.749 89.4 2023 0.756 88.6 2024 0.762 87.8 2025 0.768 87.1 2026 0.775 86.4 2027 0.781 85.6 2028 0.788 84.9 2029 0.794 84.2 2030 0.801 83.5 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
00205+4531	A 647		2006	36	106	0.7	7.17	9.56	F5	OD	002033.00+453032.2
00205+4531	A 647		2009	37	102	0.7	7.17	9.56	F5	OD	002033.00+453032.2

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