09379+4554 A 1765 (HD 83158)

 
 
09h 37m 51.67s +45° 54' 13.1" P.A. 3.00 sep 0.2 mag 9.40,8.85 Sp F4III dist. 107.87 pc (351.87 l.y.)
 
 
Coord 2000 09379+4554 Discov num A  1765 Comp Coord arcsec 2000 09 37 51.67 +45 54 13.1
Date first 1908 Date last 2012 Obs 22
Pa first 304 Pa last 3 P.A. Now (θ) 219.4°
Sep first 0.2 Sep last 0.161 Sep. Now (ρ) 0.048"
Mag pri 9.40 Mag sec 8.85 delta mag (ΔM) 0.55 Spectral class F4III (yellow-white)
Pri motion ra -011 Sec motion ra
Pri motion dec -066 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 83158 Constellation Ursa Major SAO 42950 HIP 47250
Tycho2 3426-00343-1 Gaia DR2 824224706802650112 HD 83158 ADS 7457
BD BD+46 1528 Distance 107.87 Distance ly 351.87
 
 
ORBITAL ELEMENTS
 
 
Period (P)28.06y Periastron (T)1994.86y Semi-major axis (a)0.179a
Eccentricity (e)0.408 Inclination (i)117.2° Longitude of periastron (ω)268.3°
Node (Ω)131.5° Notesn ReferenceDoc2012a
Equinox2000 Last observation2001 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 121.2 0.168
2001 115.2 0.170
2002 109.2 0.167
2003 102.8 0.161
2004 95.8 0.152
2005 87.8 0.142
2006 78.7 0.132
2007 68.2 0.124
2008 56.5 0.118
2009 43.8 0.115
2010 30.9 0.116
2011 18.6 0.121
2012 7.5 0.128
2013 357.7 0.137
2014 349.2 0.147
2015 341.7 0.155
2016 334.9 0.162
2017 328.5 0.166
2018 322.2 0.164
2019 315.6 0.156
2020 307.7 0.138
2021 296.5 0.110
2022 274.9 0.072
2023 219.4 0.048
2024 166.5 0.075
2025 146.2 0.112
2026 135.5 0.141
2027 127.9 0.159
2028 121.5 0.168
2029 115.6 0.170
2030 109.5 0.167


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



 
 


wds09379%2B4554a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic