11162+3136 A  2157

 
 
11H 16M 14.98S +31 36' 18.1" P.A. 233.4 SEP 1.07 MAG 9.25,12.21 SP K0 DIST. 324.68 PC (1059.11 L.Y.)
 
 
Coord 2000
11162+3136
Discov num
A  2157
Comp
Coord arcsec 2000
11 16 14.98 +31 36 18.1
Date first
1910
Date last
2008
Obs
6
Pa first
0
Pa last
1
P.A. Now (θ)
233.4°
Sep first
1.0
Sep last
1.4
Sep. Now (ρ)
1.07"
Mag pri
9.25
Mag sec
12.21
delta mag (ΔM)
2.96
Spectral class
K0 (yellow-orange)
Pri motion ra
-019
Sec motion ra
Pri motion dec
-001
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ursa Major
SAO
62471
HIP
55055
Tycho2
2520-00345-1
HD
97936
ADS
8109
BD
BD+32 2125
Distance
324.68
Distance ly
1059.11
last precise pa
1.1
last precise sep
1.363
 
 
ORBITAL ELEMENTS
 
 
Period (P)619.93y Periastron (T)2043.77y Semi-major axis (a)1.3822a
Eccentricity (e)0.2048 Inclination (i)162.85° Longitude of periastron (ω)286.72°
Node (Ω)135.96° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1983
label rho theta
2000 1.097 248.5
2001 1.095 247.6
2002 1.093 246.8
2003 1.091 245.9
2004 1.089 245.0
2005 1.087 244.2
2006 1.085 243.3
2007 1.083 242.4
2008 1.081 241.5
2009 1.079 240.6
2010 1.077 239.7
2011 1.075 238.8
2012 1.074 237.9
2013 1.072 237.0
2014 1.071 236.1
2015 1.069 235.2
2016 1.068 234.3
2017 1.066 233.4
2018 1.065 232.5
2019 1.064 231.6
2020 1.063 230.6
2021 1.062 229.7
2022 1.061 228.8
2023 1.060 227.9
2024 1.059 227.0
2025 1.058 226.0
2026 1.057 225.1
2027 1.056 224.2
2028 1.056 223.2
2029 1.055 222.3
2030 1.055 221.4

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