10269+1931 COU 292

 
 
10H 26M 54.22S +19 30' 44.9" P.A. 42.3 SEP 0.22 MAG 8.42,8.79 SP F8 DIST. 79.05 PC (257.86 L.Y.)
 
 
Coord 2000
10269+1931
Discov num
COU 292
Comp
Coord arcsec 2000
10 26 54.22 +19 30 44.9
Date first
1968
Date last
2006
Obs
54
Pa first
41
Pa last
233
P.A. Now (θ)
42.3°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.22"
Mag pri
8.42
Mag sec
8.79
delta mag (ΔM)
0.37
Spectral class
F8 (yellow-white)
Pri motion ra
-011
Sec motion ra
Pri motion dec
-042
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Leo
SAO
99125
HIP
51147
Tycho2
1423-00154-1
HD
90460
BD
BD+20 2486
Distance
79.05
Distance ly
257.86
last precise pa
233.1
last precise sep
0.061
 
 
ORBITAL ELEMENTS
 
 
Period (P)25.02y Periastron (T)1981.6y Semi-major axis (a)0.149a
Eccentricity (e)0.592 Inclination (i)138.4° Longitude of periastron (ω)215.1°
Node (Ω)61.7° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2006
label rho theta
2000 0.158 3.0
2001 0.141 354.4
2002 0.124 343.4
2003 0.107 328.8
2004 0.091 309.0
2005 0.079 282.1
2006 0.067 245.8
2007 0.051 188.4
2008 0.066 124.7
2009 0.100 95.5
2010 0.132 81.0
2011 0.157 71.8
2012 0.178 64.9
2013 0.194 59.4
2014 0.206 54.6
2015 0.215 50.3
2016 0.220 46.2
2017 0.223 42.3
2018 0.223 38.4
2019 0.220 34.5
2020 0.215 30.4
2021 0.207 26.1
2022 0.198 21.4
2023 0.186 16.2
2024 0.173 10.2
2025 0.158 3.2
2026 0.141 354.6
2027 0.124 343.6
2028 0.107 329.1
2029 0.092 309.4
2030 0.079 282.7

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic