Double Star Calculator - Orbit

Orbital Elements for BU129
WDS: BU129 WDS ID/Discoverer
P: 356.000 Orbital period (years)
a: 0.688 Semi-major axis (arcseconds)
i: 52.4 Inclination (degrees)
Ω: 133.0 Longitude of ascending node (degrees)
T: 2013.700 Epoch of periastron passage (year)
e: 0.862 Eccentricity
ω: 126.5 Longitude of periastron (degrees)
Start-Year: 1847.0 Year
End-Year: 2203.0 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for BU129
Position: 172838.77-253038.4 Epoch-2000 right ascension and declination
WDS-ID: 17286-2531 WDS designation
Discoverer Code: BU129 Discover designation and components
ADS number: 10564 Aitken Double Star catalog
HD number: 158140 HD catalog number
Hipparcos number: 85521 Hipparcos catalog number
V1: 7.45 Magnitude of the primary
V2: 8.48 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2017 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Tok2018b Reference

Double Star Orbit for BU129



WDS 6th Orbit including measures of BU129

-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of BU129
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.218     9.28
--------------------------
1847.00    1.000    95.19
1848.00    1.000    95.33
1849.00    1.001    95.48
1850.00    1.002    95.63
1851.00    1.003    95.78
1852.00    1.003    95.92
1853.00    1.004    96.07
1854.00    1.004    96.22
1855.00    1.005    96.36
1856.00    1.005    96.51
1857.00    1.006    96.66
1858.00    1.006    96.80
1859.00    1.006    96.95
1860.00    1.007    97.10
1861.00    1.007    97.24
1862.00    1.007    97.39
1863.00    1.007    97.53
1864.00    1.007    97.68
1865.00    1.007    97.83
1866.00    1.007    97.97
1867.00    1.007    98.12
1868.00    1.007    98.26
1869.00    1.007    98.41
1870.00    1.007    98.56
1871.00    1.007    98.70
1872.00    1.007    98.85
1873.00    1.006    98.99
1874.00    1.006    99.14
1875.00    1.006    99.29
1876.00    1.005    99.43
1877.00    1.005    99.58
1878.00    1.004    99.73
1879.00    1.003    99.87
1880.00    1.003   100.02
1881.00    1.002   100.17
1882.00    1.001   100.31
1883.00    1.001   100.46
1884.00    1.000   100.61
1885.00    0.999   100.76
1886.00    0.998   100.91
1887.00    0.997   101.06
1888.00    0.996   101.20
1889.00    0.995   101.35
1890.00    0.994   101.50
1891.00    0.993   101.65
1892.00    0.991   101.80
1893.00    0.990   101.96
1894.00    0.989   102.11
1895.00    0.987   102.26
1896.00    0.986   102.41
1897.00    0.984   102.56
1898.00    0.983   102.72
1899.00    0.981   102.87
1900.00    0.980   103.02
1901.00    0.978   103.18
1902.00    0.976   103.33
1903.00    0.974   103.49
1904.00    0.972   103.64
1905.00    0.971   103.80
1906.00    0.969   103.96
1907.00    0.967   104.12
1908.00    0.964   104.28
1909.00    0.962   104.44
1910.00    0.960   104.60
1911.00    0.958   104.76
1912.00    0.955   104.92
1913.00    0.953   105.08
1914.00    0.950   105.24
1915.00    0.948   105.41
1916.00    0.945   105.57
1917.00    0.943   105.74
1918.00    0.940   105.91
1919.00    0.937   106.08
1920.00    0.934   106.24
1921.00    0.931   106.41
1922.00    0.928   106.59
1923.00    0.925   106.76
1924.00    0.922   106.93
1925.00    0.919   107.11
1926.00    0.916   107.28
1927.00    0.912   107.46
1928.00    0.909   107.64
1929.00    0.905   107.82
1930.00    0.902   108.00
1931.00    0.898   108.18
1932.00    0.894   108.37
1933.00    0.891   108.55
1934.00    0.887   108.74
1935.00    0.883   108.93
1936.00    0.879   109.12
1937.00    0.875   109.31
1938.00    0.871   109.51
1939.00    0.866   109.70
1940.00    0.862   109.90
1941.00    0.857   110.10
1942.00    0.853   110.30
1943.00    0.848   110.51
1944.00    0.844   110.72
1945.00    0.839   110.92
1946.00    0.834   111.14
1947.00    0.829   111.35
1948.00    0.824   111.57
1949.00    0.819   111.79
1950.00    0.813   112.01
1951.00    0.808   112.23
1952.00    0.802   112.46
1953.00    0.797   112.69
1954.00    0.791   112.93
1955.00    0.785   113.17
1956.00    0.779   113.41
1957.00    0.773   113.65
1958.00    0.767   113.90
1959.00    0.761   114.16
1960.00    0.754   114.42
1961.00    0.748   114.68
1962.00    0.741   114.95
1963.00    0.735   115.22
1964.00    0.728   115.49
1965.00    0.721   115.78
1966.00    0.713   116.06
1967.00    0.706   116.36
1968.00    0.698   116.66
1969.00    0.691   116.97
1970.00    0.683   117.28
1971.00    0.675   117.60
1972.00    0.667   117.93
1973.00    0.659   118.27
1974.00    0.650   118.61
1975.00    0.641   118.97
1976.00    0.633   119.33
1977.00    0.624   119.71
1978.00    0.614   120.09
1979.00    0.605   120.49
1980.00    0.595   120.90
1981.00    0.585   121.33
1982.00    0.575   121.77
1983.00    0.565   122.22
1984.00    0.554   122.70
1985.00    0.543   123.19
1986.00    0.532   123.70
1987.00    0.521   124.23
1988.00    0.509   124.79
1989.00    0.497   125.38
1990.00    0.484   125.99
1991.00    0.472   126.64
1992.00    0.458   127.33
1993.00    0.445   128.05
1994.00    0.431   128.83
1995.00    0.416   129.65
1996.00    0.401   130.54
1997.00    0.386   131.49
1998.00    0.370   132.53
1999.00    0.353   133.66
2000.00    0.336   134.91
2001.00    0.318   136.30
2002.00    0.299   137.85
2003.00    0.279   139.63
2004.00    0.259   141.67
2005.00    0.237   144.09
2006.00    0.214   147.00
2007.00    0.190   150.63
2008.00    0.165   155.35
2009.00    0.138   161.84
2010.00    0.111   171.48
2011.00    0.085   187.19
2012.00    0.066   214.09
2013.00    0.064   250.98
2014.00    0.079   281.21
2015.00    0.099   300.27
2016.00    0.117   313.03
2017.00    0.132   322.59
2018.00    0.145   330.33
2019.00    0.155   336.92
2020.00    0.165   342.69
2021.00    0.174   347.85
2022.00    0.182   352.52
2023.00    0.190   356.79
2024.00    0.198     0.71
2025.00    0.206     4.33
2026.00    0.214     7.69
2027.00    0.222    10.82
2028.00    0.229    13.73
2029.00    0.237    16.45
2030.00    0.245    19.01
2031.00    0.252    21.40
2032.00    0.260    23.66
2033.00    0.268    25.79
2034.00    0.275    27.79
2035.00    0.283    29.69
2036.00    0.291    31.49
2037.00    0.299    33.19
2038.00    0.306    34.81
2039.00    0.314    36.35
2040.00    0.321    37.82
2041.00    0.329    39.22
2042.00    0.337    40.56
2043.00    0.344    41.84
2044.00    0.352    43.06
2045.00    0.359    44.23
2046.00    0.367    45.36
2047.00    0.374    46.44
2048.00    0.381    47.48
2049.00    0.389    48.47
2050.00    0.396    49.44
2051.00    0.403    50.36
2052.00    0.410    51.26
2053.00    0.418    52.12
2054.00    0.425    52.96
2055.00    0.432    53.76
2056.00    0.439    54.55
2057.00    0.446    55.30
2058.00    0.453    56.04
2059.00    0.460    56.75
2060.00    0.466    57.44
2061.00    0.473    58.11
2062.00    0.480    58.76
2063.00    0.487    59.39
2064.00    0.493    60.01
2065.00    0.500    60.61
2066.00    0.507    61.20
2067.00    0.513    61.77
2068.00    0.520    62.32
2069.00    0.526    62.86
2070.00    0.532    63.39
2071.00    0.539    63.91
2072.00    0.545    64.41
2073.00    0.551    64.90
2074.00    0.557    65.39
2075.00    0.563    65.86
2076.00    0.570    66.32
2077.00    0.576    66.77
2078.00    0.582    67.21
2079.00    0.588    67.65
2080.00    0.593    68.07
2081.00    0.599    68.49
2082.00    0.605    68.90
2083.00    0.611    69.30
2084.00    0.617    69.69
2085.00    0.622    70.07
2086.00    0.628    70.45
2087.00    0.634    70.83
2088.00    0.639    71.19
2089.00    0.645    71.55
2090.00    0.650    71.90
2091.00    0.655    72.25
2092.00    0.661    72.59
2093.00    0.666    72.93
2094.00    0.671    73.26
2095.00    0.677    73.59
2096.00    0.682    73.91
2097.00    0.687    74.22
2098.00    0.692    74.54
2099.00    0.697    74.84
2100.00    0.702    75.15
2101.00    0.707    75.44
2102.00    0.712    75.74
2103.00    0.717    76.03
2104.00    0.722    76.31
2105.00    0.726    76.60
2106.00    0.731    76.88
2107.00    0.736    77.15
2108.00    0.741    77.42
2109.00    0.745    77.69
2110.00    0.750    77.96
2111.00    0.754    78.22
2112.00    0.759    78.48
2113.00    0.763    78.73
2114.00    0.768    78.98
2115.00    0.772    79.23
2116.00    0.776    79.48
2117.00    0.781    79.73
2118.00    0.785    79.97
2119.00    0.789    80.21
2120.00    0.793    80.44
2121.00    0.797    80.68
2122.00    0.801    80.91
2123.00    0.805    81.14
2124.00    0.809    81.36
2125.00    0.813    81.59
2126.00    0.817    81.81
2127.00    0.821    82.03
2128.00    0.825    82.25
2129.00    0.829    82.47
2130.00    0.833    82.68
2131.00    0.836    82.90
2132.00    0.840    83.11
2133.00    0.844    83.31
2134.00    0.847    83.52
2135.00    0.851    83.73
2136.00    0.854    83.93
2137.00    0.858    84.13
2138.00    0.861    84.33
2139.00    0.865    84.53
2140.00    0.868    84.73
2141.00    0.871    84.93
2142.00    0.875    85.12
2143.00    0.878    85.31
2144.00    0.881    85.50
2145.00    0.884    85.69
2146.00    0.887    85.88
2147.00    0.890    86.07
2148.00    0.893    86.26
2149.00    0.896    86.44
2150.00    0.899    86.63
2151.00    0.902    86.81
2152.00    0.905    86.99
2153.00    0.908    87.17
2154.00    0.911    87.35
2155.00    0.914    87.53
2156.00    0.916    87.70
2157.00    0.919    87.88
2158.00    0.922    88.05
2159.00    0.924    88.23
2160.00    0.927    88.40
2161.00    0.929    88.57
2162.00    0.932    88.74
2163.00    0.934    88.91
2164.00    0.937    89.08
2165.00    0.939    89.25
2166.00    0.941    89.42
2167.00    0.944    89.58
2168.00    0.946    89.75
2169.00    0.948    89.92
2170.00    0.950    90.08
2171.00    0.952    90.24
2172.00    0.954    90.41
2173.00    0.957    90.57
2174.00    0.959    90.73
2175.00    0.961    90.89
2176.00    0.962    91.05
2177.00    0.964    91.21
2178.00    0.966    91.37
2179.00    0.968    91.53
2180.00    0.970    91.69
2181.00    0.972    91.84
2182.00    0.973    92.00
2183.00    0.975    92.16
2184.00    0.977    92.31
2185.00    0.978    92.47
2186.00    0.980    92.62
2187.00    0.981    92.77
2188.00    0.983    92.93
2189.00    0.984    93.08
2190.00    0.985    93.23
2191.00    0.987    93.39
2192.00    0.988    93.54
2193.00    0.989    93.69
2194.00    0.990    93.84
2195.00    0.992    93.99
2196.00    0.993    94.14
2197.00    0.994    94.29
2198.00    0.995    94.44
2199.00    0.996    94.59
2200.00    0.997    94.74
2201.00    0.998    94.89
2202.00    0.999    95.04



 

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Acknowledgements
The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.


Report Information
Double Star Calculator:   Version 1.2 ($Rev: 2397 $)
Report created:   2026-06-25 17:38:58


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