11107+3110 HJ 2562

11h 10m 41.86s +31° 09' 32.7" P.A. 221.00 sep 1.0 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 2017 Obs 50
Pa first 347 Pa last 221 P.A. Now (θ) 221°
Sep first 1.5 Sep last 1.009 Sep. Now (ρ) 1.009"
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 HIP 54619 Tycho2 2520-00597-1 Gaia DR2 756958509559756544
ADS 8082 BD BD+31 2238 Distance 54.85 Distance ly 178.92




ORBITAL ELEMENTS

Period (P)468.8926y± 249.5266 Periastron (T)1857.7161y± 26.5467 Semi-major axis (a)1.76611a± 0.57719
Eccentricity (e)0.32888± 0.32191 Inclination (i)119.779°± 11.231 Longitude of periastron (ω)123.1°± 41.075
Node (Ω)138.446°± 16.345 Notesn ReferenceIzm2019
Equinox Last observation1996 Grade5(1=Definitive, 9=Indet.)

label theta rho
2000 243.7 1.070
2001 242.7 1.069
2002 241.7 1.068
2003 240.8 1.068
2004 239.8 1.068
2005 238.8 1.068
2006 237.8 1.068
2007 236.8 1.068
2008 235.8 1.069
2009 234.9 1.069
2010 233.9 1.070
2011 232.9 1.072
2012 231.9 1.073
2013 230.9 1.075
2014 230.0 1.076
2015 229.0 1.078
2016 228.0 1.081
2017 227.1 1.083
2018 226.1 1.086
2019 225.2 1.089
2020 224.2 1.092
2021 223.3 1.095
2022 222.4 1.098
2023 221.4 1.102
2024 220.5 1.106
2025 219.6 1.109
2026 218.7 1.114
2027 217.8 1.118
2028 216.9 1.122
2029 216.0 1.127
2030 215.1 1.132


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



 
 


wds11107%2B3110b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic