03261+1229 A   829

Coord 2000	03261+1229		Discov num	A   829		Comp			Coord arcsec 2000	03 26 08.81 +12 28 54.7
Date first	1904		Date last	2003		Obs	24
Pa first	41		Pa last	56		P.A. Now (θ)	39.2°
Sep first	0.3		Sep last	0.4		Sep. Now (ρ)	0.43"
Mag pri	8.82		Mag sec	10.38		delta mag (ΔM)	1.56		Spectral class	G0 (yellow)
Pri motion ra	-072		Sec motion ra
Pri motion dec	-023		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	56		Precise sep	0.387		Constellation	Taurus		SAO	93433
HIP	16008		Tycho2	0653-00556-1		HD	21261		ADS	2531
BD	BD+11 474		Distance	68.73		Distance ly	224.2		last precise pa	56
last precise sep	0.387

Period (P)	111.38y	± 3.93	Periastron (T)	1985.1y	± 0.79	Semi-major axis (a)	0.417a	± 0.012
Eccentricity (e)	0.743	± 0.018	Inclination (i)	120.6°	± 2	Longitude of periastron (ω)	77.2°	± 1.9
Node (Ω)	260.1°	± 2.4	Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2003

label rho theta 2000 0.364 60.0 2001 0.372 58.6 2002 0.380 57.3 2003 0.386 56.0 2004 0.392 54.7 2005 0.398 53.5 2006 0.403 52.3 2007 0.407 51.1 2008 0.411 50.0 2009 0.414 48.8 2010 0.417 47.7 2011 0.420 46.6 2012 0.422 45.5 2013 0.424 44.5 2014 0.425 43.4 2015 0.427 42.4 2016 0.428 41.3 2017 0.428 40.3 2018 0.429 39.2 2019 0.429 38.2 2020 0.429 37.1 2021 0.429 36.1 2022 0.429 35.1 2023 0.428 34.0 2024 0.427 33.0 2025 0.426 31.9 2026 0.425 30.9 2027 0.424 29.8 2028 0.423 28.7 2029 0.421 27.7 2030 0.419 26.6 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
03261+1229	A 829		2003	24	56	0.4	8.82	10.38	G0	NO	032608.81+122854.7

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