09544+3041 COU 1258 (HD 85708)

 
 
09h 54m 24.02s +30° 41' 18.1" P.A. 230.00 sep 0.2 mag 9.92,9.13 Sp F5 dist. 146.63 pc (478.31 l.y.)
 
 
Coord 2000 09544+3041 Discov num COU1258 Comp Coord arcsec 2000 09 54 24.02 +30 41 18.1
Date first 1975 Date last 2015 Obs 14
Pa first 52 Pa last 229.8 P.A. Now (θ) 229.8°
Sep first 0.2 Sep last 0.171 Sep. Now (ρ) 0.171"
Mag pri 9.92 Mag sec 9.13 delta mag (ΔM) 0.79 Spectral class F5 (yellow-white)
Pri motion ra -026 Sec motion ra
Pri motion dec -038 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 85708 Constellation Leo SAO 61748 HIP 48572
Tycho2 2502-00804-1 Gaia DR2 744874185280916224 HD 85708 BD BD+31 2066
Distance 146.63 Distance ly 478.31
 
 
ORBITAL ELEMENTS
 
 
Period (P)96y± 13 Periastron (T)2096y± 39 Semi-major axis (a)0.198a± 0.017
Eccentricity (e)0.237± 0.092 Inclination (i)85.29°± 0.87 Longitude of periastron (ω)259°± 44
Node (Ω)232°± 26 Notes ReferenceHor2020
Equinox2000 Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 74.9 0.031
2001 96.7 0.018
2002 159.4 0.013
2003 200.6 0.024
2004 213.4 0.039
2005 219.1 0.054
2006 222.3 0.069
2007 224.3 0.083
2008 225.8 0.097
2009 226.8 0.111
2010 227.7 0.123
2011 228.4 0.135
2012 229.0 0.145
2013 229.5 0.155
2014 230.0 0.164
2015 230.4 0.172
2016 230.8 0.178
2017 231.1 0.184
2018 231.5 0.189
2019 231.8 0.194
2020 232.1 0.197
2021 232.4 0.199
2022 232.7 0.201
2023 233.0 0.201
2024 233.3 0.201
2025 233.6 0.201
2026 233.9 0.199
2027 234.2 0.197
2028 234.5 0.194
2029 234.8 0.191
2030 235.1 0.187


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


 
  


wds09544%2B3041a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic