11107+3110 HJ 2562

 
 
11H 10M 41.86S +31 09' 32.7" P.A. 232.5 SEP 1.07 MAG 10.53,11.40 SP K5 DIST. 54.85 PC (178.92 L.Y.)
 
 
Coord 2000
11107+3110
Discov num
HJ 2562
Comp
Coord arcsec 2000
11 10 41.86 +31 09 32.7
Date first
1831
Date last
1996
Obs
40
Pa first
347
Pa last
245
P.A. Now (θ)
232.5°
Sep first
1.5
Sep last
1.1
Sep. Now (ρ)
1.07"
Mag pri
10.53
Mag sec
11.40
delta mag (ΔM)
0.87
Spectral class
K5 (yellow-orange)
Pri motion ra
-088
Sec motion ra
-088
Pri motion dec
-023
Sec motion dec
-023
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ursa Major
SAO
62436
HIP
54619
Tycho2
2520-00597-1
ADS
8082
BD
BD+31 2238
Distance
54.85
Distance ly
178.92
last precise pa
245.2
last precise sep
1.09
 
 
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