00495+4404 HDS 109

Coord 2000	00495+4404		Discov num	HDS 109		Comp			Coord arcsec 2000	00 49 32.74 +44 03 33.8
Date first	1991		Date last	2013		Obs	17
Pa first	85		Pa last	136		P.A. Now (θ)	117.8°
Sep first	0.3		Sep last	0.2		Sep. Now (ρ)	0.32"
Mag pri	8.02		Mag sec	10.32		delta mag (ΔM)	2.3		Spectral class	G0 (yellow)
Pri motion ra	-070		Sec motion ra
Pri motion dec	-069		Sec motion dec
Notes	O (Orbital solution)

This double is physical.

Precise pa	136.1		Precise sep	0.191		Constellation	Andromeda		SAO	36695
HIP	3857		Tycho2	2809-01555-1		Gaia DR2	375984293246567296		HD	4712
BD	BD+43 159		Distance	67.7		Distance ly	220.84		last precise pa	136.1
last precise sep	0.191

Period (P)	46.64y		Periastron (T)	2009.69y		Semi-major axis (a)	0.253a
Eccentricity (e)	0.752		Inclination (i)	133.5°		Longitude of periastron (ω)	227.5°
Node (Ω)	131.1°		Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2012

label rho theta 2000 0.236 62.5 2001 0.220 58.2 2002 0.203 53.2 2003 0.185 47.2 2004 0.167 40.0 2005 0.149 31.0 2006 0.131 19.5 2007 0.114 4.4 2008 0.096 344.0 2009 0.074 313.3 2010 0.047 245.8 2011 0.078 173.9 2012 0.127 151.4 2013 0.168 141.0 2014 0.203 134.4 2015 0.232 129.7 2016 0.258 126.0 2017 0.280 122.9 2018 0.298 120.2 2019 0.315 117.8 2020 0.329 115.6 2021 0.341 113.6 2022 0.351 111.8 2023 0.360 110.0 2024 0.367 108.3 2025 0.372 106.7 2026 0.377 105.1 2027 0.380 103.5 2028 0.382 102.0 2029 0.382 100.4 2030 0.382 98.9 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
00495+4404	HDS 109		2006	11	8	0.1	8.02	10.32	G0	D	004932.74+440333.8
00495+4404	HDS 109		2007	13	348	0.1	8.02	10.32	G0	D	004932.74+440333.8
00495+4404	HDS 109		2008	14	328	0.1	8.02	10.32	G0	D	004932.74+440333.8
00495+4404	HDS 109		2013	17	136	0.2	8.02	10.32	G0	O	004932.74+440333.8

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