12442+5146 RDR 5

Coord 2000	12442+5146		Discov num	RDR   5		Comp			Coord arcsec 2000	12 44 14.54 +51 45 33.4
Date first	2003		Date last	2018		Obs	9
Pa first	243		Pa last	280.5		P.A. Now (θ)	280.5°
Sep first	1.3		Sep last	2.288		Sep. Now (ρ)	2.288"
Mag pri	4.78		Mag sec	8.97		delta mag (ΔM)	4.19		Spectral class	K3+K3+M5 (yellow-orange/yellow-orange)
Pri motion ra	-379		Sec motion ra
Pri motion dec	-184		Sec motion dec
Notes	N K (See Notes, K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes Nature of this double is uncertain.

Constellation

Canes Venatici

Identifier	12442+5146
coord_arcsec_2000	124414.90+514535.1

Period (P)	270.2108d	± 3.3137	Periastron (T)	48401.4258d (1991.394y)	± 8.9533	Semi-major axis (a)	7.19m	± 0.71
Eccentricity (e)	0		Inclination (i)	48.85°	± 10.2	Longitude of periastron (ω)	0°
Node (Ω)	154.94°	± 13.01	Notes	n		Reference	HIP1997d
Equinox			Last observation	1991		Grade	9	(1=Definitive, 9=Indet.)

label theta rho 2000-01-01 10.9 0.006 2001-01-01 151.2 0.007 2002-01-01 287.3 0.005 2003-01-01 32.9 0.005 2004-01-01 164.4 0.007 2005-01-01 306.7 0.006 2006-01-01 61.0 0.005 2007-01-01 178.9 0.007 2008-01-01 321.9 0.007 2009-01-01 90.2 0.005 2010-01-01 197.0 0.006 2011-01-01 335.2 0.007 2012-01-01 113.9 0.006 2013-01-01 221.0 0.005 2014-01-01 348.6 0.007 2015-01-01 131.7 0.007 2016-01-01 250.3 0.005 2017-01-01 4.0 0.006 2018-01-01 146.1 0.007 2019-01-01 278.2 0.005 2020-01-01 23.6 0.005 2021-01-01 159.3 0.007 2022-01-01 299.9 0.006 2023-01-01 49.6 0.005 2024-01-01 173.0 0.007 2025-01-01 316.4 0.007 2026-01-01 79.4 0.005 2027-01-01 189.4 0.006 2028-01-01 330.2 0.007 2029-01-01 105.6 0.005 2030-01-01 210.9 0.005		Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic