08138+0159 BU 1244 (HD 68706)

 
 
08h 13m 45.54s +01° 59' 08.4" P.A. 6.00 sep 1.0 mag 8.59,9.15 Sp F8V dist. 142.45 pc (464.67 l.y.)
 
 
Coord 2000 08138+0159 Discov num BU 1244 Comp Coord arcsec 2000 08 13 45.54 +01 59 08.4
Date first 1891 Date last 2017 Obs 77
Pa first 50 Pa last 5.8 P.A. Now (θ) 5.8°
Sep first 0.7 Sep last 1.033 Sep. Now (ρ) 1.033"
Mag pri 8.59 Mag sec 9.15 delta mag (ΔM) 0.56 Spectral class F8V (yellow-white)
Pri motion ra +044 Sec motion ra +039
Pri motion dec -056 Sec motion dec -055
Notes O W (Orbital solution, )
rPM=0.072 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 68706 Constellation Hydra SAO 116502 HIP 40297
Tycho2 0199-00203-1 Gaia DR2 3089995464986762112 HD 68706 ADS 6671
BD BD+02 1904 Distance 142.45 Distance ly 464.67
 
 
ORBITAL ELEMENTS
 
 
Period (P)1043.6188y± 609.8711 Periastron (T)1849.1791y± 186.7978 Semi-major axis (a)1.44137a± 0.73504
Eccentricity (e)0.71393± 0.25842 Inclination (i)122.351°± 15.692 Longitude of periastron (ω)286.731°± 31.264
Node (Ω)58.583°± 60.554 Notes ReferenceIzm2019
Equinox Last observation2015 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 10.6 0.969
2001 10.3 0.970
2002 10.0 0.971
2003 9.7 0.973
2004 9.5 0.974
2005 9.2 0.975
2006 8.9 0.977
2007 8.6 0.978
2008 8.3 0.979
2009 8.0 0.981
2010 7.8 0.982
2011 7.5 0.983
2012 7.2 0.984
2013 6.9 0.986
2014 6.7 0.987
2015 6.4 0.988
2016 6.1 0.989
2017 5.8 0.991
2018 5.6 0.992
2019 5.3 0.993
2020 5.0 0.994
2021 4.7 0.996
2022 4.5 0.997
2023 4.2 0.998
2024 3.9 0.999
2025 3.7 1.001
2026 3.4 1.002
2027 3.1 1.003
2028 2.9 1.004
2029 2.6 1.005
2030 2.3 1.007


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


 
  


wds08138%2B0159a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic