01546+2049 MKT   3 (Bet Ari)

Coord 2000	01546+2049		Discov num	MKT   3		Comp			Coord arcsec 2000	01 54 38.35 +20 48 29.9
Date first	1988		Date last	2005		Obs	15
Pa first	93		Pa last	113		P.A. Now (θ)	113°
Sep first	0.1		Sep last	0.0		Sep. Now (ρ)	0"
Mag pri	2.60		Mag sec	5.20		delta mag (ΔM)	2.6		Spectral class	A5V (white)
Pri motion ra	+097		Sec motion ra
Pri motion dec	-108		Sec motion dec
Notes	N O R (See Notes, Orbital solution, Red magnitudes)

This double is physical.

Precise pa	112.7		Precise sep	0.027		Name	Bet Ari		Constellation	Aries
SAO	75012		HIP	8903		Gaia DR2	356001024		HD	11636
HR	553		GC	2309		GL	Gl 80		BD	BD+20 306
Bayer	Beta Arietis		Bayer name	Bet Ari		Flamsteed	6 Arietis		Flamsteed name	6 Ari
Distance	17.99		Distance ly	58.68		last precise pa	112.7		last precise sep	0.027

Period (P)	106.99442d	± 0.00069	Periastron (T)	44809.1016d (1981.559y)	± 0.0066	Semi-major axis (a)	36m	± 0.54
Eccentricity (e)	0.8801	± 0.0008	Inclination (i)	47.5°	± 0.54	Longitude of periastron (ω)	204.9°	± 0.33
Node (Ω)	83.3°	± 0.27	Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox			Last observation

label rho theta 2000-01-01 0.015 145.5 2001-01-01 0.063 95.8 2002-01-01 0.046 113.5 2003-01-01 0.049 87.8 2004-01-01 0.061 104.7 2005-01-01 0.009 47.1 2006-01-01 0.064 98.3 2007-01-01 0.037 119.4 2008-01-01 0.056 91.4 2009-01-01 0.057 107.6 2010-01-01 0.031 78.0 2011-01-01 0.064 100.8 2012-01-01 0.024 130.8 2013-01-01 0.061 94.4 2014-01-01 0.051 111.2 2015-01-01 0.044 85.3 2016-01-01 0.063 103.3 2017-01-01 0.007 192.0 2018-01-01 0.064 97.0 2019-01-01 0.042 115.9 2020-01-01 0.053 89.6 2021-01-01 0.059 106.0 2022-01-01 0.021 70.1 2023-01-01 0.065 99.5 2024-01-01 0.031 123.6 2025-01-01 0.059 92.9 2026-01-01 0.054 109.2 2027-01-01 0.038 82.1 2028-01-01 0.064 101.9 2029-01-01 0.016 143.1 2030-01-01 0.063 95.6 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
01546+2049	MKT 3		1988	14	113	0.0	2.64		A5V	NO	015438.35+204829.9
01546+2049	MKT 3		2005	15	113	0.0	2.64		A5V	NO	015438.35+204829.9

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