02090+3540 COU 1067 (HD 13102)

02^h 09^m 02.07^s +35° 40' 29.5" P.A. 42.00 sep 0.1 mag 8.94,9.44 Sp F5 dist. 186.92 pc (609.73 l.y.)

Coord 2000	02090+3540		Discov num	COU1067		Comp			Coord arcsec 2000	02 09 02.07 +35 40 29.5
Date first	1973		Date last	2013		Obs	41
Pa first	34		Pa last	42.3		P.A. Now (θ)	42.3°
Sep first	0.2		Sep last	0.127		Sep. Now (ρ)	0.127"
Mag pri	8.94		Mag sec	9.44		delta mag (ΔM)	0.5		Spectral class	F5 (yellow-white)
Pri motion ra	+092		Sec motion ra
Pri motion dec	-058		Sec motion dec
Notes	O (Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 13102		Constellation	Triangulum		SAO	55302		HIP	10022
Tycho2	2321-00933-1		Gaia DR2	329653896907895936		HD	13102		BD	BD+34 379
Distance	186.92		Distance ly	609.73

ORBITAL ELEMENTS

Period (P)	133.9y	± 9.4	Periastron (T)	1980.5y	± 0.3	Semi-major axis (a)	0.239a	± 0.011
Eccentricity (e)	0.554	± 0.015	Inclination (i)	77.2°	± 0.2	Longitude of periastron (ω)	271.2°	± 3.4
Node (Ω)	20.2°	± 0.2	Notes			Reference	BAE2021
Equinox			Last observation			Grade	4	(1=Definitive, 9=Indet.)

label	theta	rho
2000	27.4	0.197
2001	28.1	0.198
2002	28.8	0.198
2003	29.6	0.198
2004	30.3	0.198
2005	31.0	0.197
2006	31.7	0.196
2007	32.5	0.195
2008	33.2	0.193
2009	34.0	0.192
2010	34.8	0.189
2011	35.6	0.187
2012	36.4	0.185
2013	37.2	0.182
2014	38.1	0.179
2015	39.0	0.176
2016	39.9	0.173
2017	40.9	0.170
2018	41.9	0.166
2019	43.0	0.163
2020	44.0	0.159
2021	45.2	0.155
2022	46.4	0.152
2023	47.7	0.148
2024	49.0	0.144
2025	50.4	0.140
2026	51.9	0.136
2027	53.4	0.132
2028	55.1	0.129
2029	56.9	0.125
2030	58.8	0.121

grafico orbita

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

wds02090%2B3540a.png orbit plot

Measures: green=micrometric, blue=interferometric, purple=photographic