Double Star Calculator - Orbit

Orbital Elements for BU47
WDS: BU47 WDS ID/Discoverer
P: 403.900 Orbital period (years)
a: 1.209 Semi-major axis (arcseconds)
i: 54.0 Inclination (degrees)
Ω: 85.3 Longitude of ascending node (degrees)
T: 2013.000 Epoch of periastron passage (year)
e: 0.478 Eccentricity
ω: 339.8 Longitude of periastron (degrees)
Start-Year: 1823.05 Year
End-Year: 2226.95 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU47
Position: 180130.85-101400.9 Epoch-2000 right ascension and declination
WDS-ID: 18015-1014 WDS designation
Discoverer Code: BU47 Discover designation and components
ADS number: 10977 Aitken Double Star catalog
HD number: 164434 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 8.74 Magnitude of the primary
V2: 9.59 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2009 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Hrt2013c Reference

Double Star Orbit for BU47



WDS 6th Orbit including measures of BU47

-- 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 BU47
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.656    95.39
--------------------------
1823.05    1.738   255.80
1824.05    1.739   256.02
1825.05    1.740   256.24
1826.05    1.741   256.47
1827.05    1.742   256.69
1828.05    1.743   256.91
1829.05    1.743   257.13
1830.05    1.744   257.35
1831.05    1.744   257.57
1832.05    1.745   257.79
1833.05    1.745   258.02
1834.05    1.745   258.24
1835.05    1.745   258.46
1836.05    1.745   258.68
1837.05    1.745   258.90
1838.05    1.744   259.12
1839.05    1.744   259.34
1840.05    1.743   259.56
1841.05    1.743   259.78
1842.05    1.742   260.01
1843.05    1.741   260.23
1844.05    1.740   260.45
1845.05    1.739   260.67
1846.05    1.738   260.89
1847.05    1.737   261.12
1848.05    1.735   261.34
1849.05    1.734   261.56
1850.05    1.732   261.79
1851.05    1.730   262.01
1852.05    1.728   262.24
1853.05    1.726   262.46
1854.05    1.724   262.69
1855.05    1.722   262.91
1856.05    1.719   263.14
1857.05    1.717   263.37
1858.05    1.714   263.60
1859.05    1.712   263.83
1860.05    1.709   264.06
1861.05    1.706   264.29
1862.05    1.703   264.52
1863.05    1.700   264.75
1864.05    1.696   264.99
1865.05    1.693   265.22
1866.05    1.689   265.46
1867.05    1.686   265.69
1868.05    1.682   265.93
1869.05    1.678   266.17
1870.05    1.674   266.41
1871.05    1.670   266.65
1872.05    1.665   266.89
1873.05    1.661   267.13
1874.05    1.656   267.38
1875.05    1.652   267.62
1876.05    1.647   267.87
1877.05    1.642   268.12
1878.05    1.637   268.37
1879.05    1.632   268.62
1880.05    1.627   268.87
1881.05    1.621   269.13
1882.05    1.616   269.39
1883.05    1.610   269.64
1884.05    1.604   269.90
1885.05    1.598   270.17
1886.05    1.592   270.43
1887.05    1.586   270.70
1888.05    1.580   270.97
1889.05    1.573   271.24
1890.05    1.567   271.51
1891.05    1.560   271.79
1892.05    1.553   272.06
1893.05    1.546   272.34
1894.05    1.539   272.63
1895.05    1.532   272.91
1896.05    1.524   273.20
1897.05    1.517   273.49
1898.05    1.509   273.78
1899.05    1.501   274.08
1900.05    1.493   274.38
1901.05    1.485   274.68
1902.05    1.477   274.99
1903.05    1.469   275.30
1904.05    1.460   275.61
1905.05    1.451   275.93
1906.05    1.443   276.25
1907.05    1.434   276.58
1908.05    1.425   276.91
1909.05    1.415   277.24
1910.05    1.406   277.58
1911.05    1.397   277.92
1912.05    1.387   278.27
1913.05    1.377   278.62
1914.05    1.367   278.98
1915.05    1.357   279.34
1916.05    1.347   279.71
1917.05    1.337   280.08
1918.05    1.326   280.46
1919.05    1.316   280.85
1920.05    1.305   281.24
1921.05    1.294   281.64
1922.05    1.283   282.04
1923.05    1.272   282.45
1924.05    1.260   282.87
1925.05    1.249   283.30
1926.05    1.237   283.74
1927.05    1.226   284.18
1928.05    1.214   284.63
1929.05    1.202   285.09
1930.05    1.189   285.56
1931.05    1.177   286.04
1932.05    1.165   286.54
1933.05    1.152   287.04
1934.05    1.139   287.55
1935.05    1.126   288.07
1936.05    1.113   288.61
1937.05    1.100   289.16
1938.05    1.087   289.72
1939.05    1.073   290.30
1940.05    1.060   290.89
1941.05    1.046   291.50
1942.05    1.032   292.12
1943.05    1.019   292.76
1944.05    1.004   293.42
1945.05    0.990   294.09
1946.05    0.976   294.79
1947.05    0.962   295.50
1948.05    0.947   296.24
1949.05    0.933   297.00
1950.05    0.918   297.79
1951.05    0.903   298.60
1952.05    0.888   299.44
1953.05    0.874   300.31
1954.05    0.859   301.20
1955.05    0.844   302.13
1956.05    0.829   303.09
1957.05    0.813   304.09
1958.05    0.798   305.13
1959.05    0.783   306.20
1960.05    0.768   307.32
1961.05    0.753   308.48
1962.05    0.738   309.69
1963.05    0.723   310.96
1964.05    0.708   312.27
1965.05    0.693   313.64
1966.05    0.678   315.07
1967.05    0.664   316.57
1968.05    0.649   318.13
1969.05    0.635   319.76
1970.05    0.621   321.47
1971.05    0.607   323.25
1972.05    0.594   325.12
1973.05    0.580   327.07
1974.05    0.568   329.11
1975.05    0.555   331.25
1976.05    0.543   333.48
1977.05    0.532   335.80
1978.05    0.521   338.23
1979.05    0.511   340.75
1980.05    0.502   343.38
1981.05    0.493   346.10
1982.05    0.485   348.91
1983.05    0.478   351.82
1984.05    0.472   354.81
1985.05    0.466   357.87
1986.05    0.462     0.99
1987.05    0.458     4.17
1988.05    0.456     7.39
1989.05    0.455    10.63
1990.05    0.454    13.89
1991.05    0.455    17.14
1992.05    0.457    20.38
1993.05    0.459    23.59
1994.05    0.463    26.76
1995.05    0.467    29.87
1996.05    0.472    32.92
1997.05    0.478    35.90
1998.05    0.484    38.81
1999.05    0.491    41.63
2000.05    0.499    44.38
2001.05    0.507    47.04
2002.05    0.515    49.61
2003.05    0.524    52.11
2004.05    0.532    54.52
2005.05    0.541    56.86
2006.05    0.550    59.12
2007.05    0.559    61.31
2008.05    0.567    63.43
2009.05    0.576    65.49
2010.05    0.584    67.49
2011.05    0.592    69.44
2012.05    0.599    71.34
2013.05    0.606    73.19
2014.05    0.613    75.00
2015.05    0.619    76.77
2016.05    0.625    78.51
2017.05    0.631    80.21
2018.05    0.635    81.89
2019.05    0.640    83.54
2020.05    0.644    85.18
2021.05    0.647    86.79
2022.05    0.650    88.39
2023.05    0.652    89.98
2024.05    0.654    91.56
2025.05    0.655    93.13
2026.05    0.656    94.69
2027.05    0.657    96.25
2028.05    0.657    97.81
2029.05    0.656    99.37
2030.05    0.656   100.94
2031.05    0.654   102.50
2032.05    0.653   104.08
2033.05    0.652   105.66
2034.05    0.650   107.25
2035.05    0.648   108.85
2036.05    0.645   110.45
2037.05    0.643   112.08
2038.05    0.641   113.71
2039.05    0.638   115.35
2040.05    0.635   117.01
2041.05    0.633   118.69
2042.05    0.630   120.38
2043.05    0.627   122.08
2044.05    0.625   123.79
2045.05    0.622   125.53
2046.05    0.620   127.27
2047.05    0.618   129.03
2048.05    0.615   130.80
2049.05    0.614   132.58
2050.05    0.612   134.37
2051.05    0.610   136.17
2052.05    0.609   137.98
2053.05    0.608   139.80
2054.05    0.607   141.62
2055.05    0.607   143.44
2056.05    0.607   145.27
2057.05    0.607   147.09
2058.05    0.608   148.92
2059.05    0.608   150.74
2060.05    0.609   152.55
2061.05    0.611   154.36
2062.05    0.613   156.15
2063.05    0.615   157.94
2064.05    0.617   159.71
2065.05    0.620   161.47
2066.05    0.623   163.21
2067.05    0.627   164.93
2068.05    0.631   166.63
2069.05    0.635   168.31
2070.05    0.639   169.96
2071.05    0.644   171.60
2072.05    0.649   173.20
2073.05    0.655   174.79
2074.05    0.661   176.34
2075.05    0.666   177.87
2076.05    0.673   179.37
2077.05    0.679   180.84
2078.05    0.686   182.29
2079.05    0.693   183.70
2080.05    0.700   185.09
2081.05    0.708   186.45
2082.05    0.715   187.77
2083.05    0.723   189.07
2084.05    0.731   190.35
2085.05    0.739   191.59
2086.05    0.748   192.81
2087.05    0.756   194.00
2088.05    0.765   195.16
2089.05    0.774   196.30
2090.05    0.783   197.41
2091.05    0.792   198.49
2092.05    0.801   199.55
2093.05    0.810   200.59
2094.05    0.820   201.60
2095.05    0.829   202.59
2096.05    0.839   203.56
2097.05    0.849   204.50
2098.05    0.858   205.42
2099.05    0.868   206.33
2100.05    0.878   207.21
2101.05    0.888   208.07
2102.05    0.898   208.92
2103.05    0.908   209.74
2104.05    0.918   210.55
2105.05    0.928   211.34
2106.05    0.938   212.11
2107.05    0.948   212.87
2108.05    0.958   213.61
2109.05    0.968   214.33
2110.05    0.978   215.04
2111.05    0.989   215.74
2112.05    0.999   216.42
2113.05    1.009   217.09
2114.05    1.019   217.74
2115.05    1.029   218.38
2116.05    1.039   219.01
2117.05    1.049   219.63
2118.05    1.059   220.23
2119.05    1.069   220.83
2120.05    1.079   221.41
2121.05    1.089   221.98
2122.05    1.099   222.54
2123.05    1.109   223.10
2124.05    1.119   223.64
2125.05    1.129   224.17
2126.05    1.139   224.69
2127.05    1.148   225.21
2128.05    1.158   225.71
2129.05    1.168   226.21
2130.05    1.177   226.70
2131.05    1.187   227.18
2132.05    1.196   227.66
2133.05    1.206   228.12
2134.05    1.215   228.58
2135.05    1.225   229.03
2136.05    1.234   229.48
2137.05    1.243   229.92
2138.05    1.252   230.35
2139.05    1.261   230.78
2140.05    1.270   231.20
2141.05    1.279   231.61
2142.05    1.288   232.02
2143.05    1.297   232.42
2144.05    1.306   232.82
2145.05    1.315   233.21
2146.05    1.323   233.60
2147.05    1.332   233.98
2148.05    1.340   234.35
2149.05    1.349   234.73
2150.05    1.357   235.09
2151.05    1.365   235.46
2152.05    1.373   235.82
2153.05    1.382   236.17
2154.05    1.390   236.52
2155.05    1.398   236.87
2156.05    1.405   237.21
2157.05    1.413   237.55
2158.05    1.421   237.88
2159.05    1.429   238.21
2160.05    1.436   238.54
2161.05    1.444   238.87
2162.05    1.451   239.19
2163.05    1.458   239.51
2164.05    1.466   239.82
2165.05    1.473   240.13
2166.05    1.480   240.44
2167.05    1.487   240.75
2168.05    1.494   241.05
2169.05    1.501   241.35
2170.05    1.507   241.65
2171.05    1.514   241.94
2172.05    1.521   242.23
2173.05    1.527   242.52
2174.05    1.534   242.81
2175.05    1.540   243.09
2176.05    1.546   243.38
2177.05    1.552   243.66
2178.05    1.558   243.94
2179.05    1.564   244.21
2180.05    1.570   244.49
2181.05    1.576   244.76
2182.05    1.582   245.03
2183.05    1.587   245.29
2184.05    1.593   245.56
2185.05    1.598   245.83
2186.05    1.603   246.09
2187.05    1.609   246.35
2188.05    1.614   246.61
2189.05    1.619   246.87
2190.05    1.624   247.12
2191.05    1.629   247.38
2192.05    1.633   247.63
2193.05    1.638   247.88
2194.05    1.642   248.13
2195.05    1.647   248.38
2196.05    1.651   248.63
2197.05    1.656   248.87
2198.05    1.660   249.12
2199.05    1.664   249.36
2200.05    1.668   249.60
2201.05    1.672   249.84
2202.05    1.676   250.08
2203.05    1.679   250.32
2204.05    1.683   250.56
2205.05    1.686   250.80
2206.05    1.690   251.03
2207.05    1.693   251.27
2208.05    1.696   251.50
2209.05    1.699   251.74
2210.05    1.702   251.97
2211.05    1.705   252.20
2212.05    1.708   252.43
2213.05    1.711   252.66
2214.05    1.714   252.89
2215.05    1.716   253.12
2216.05    1.718   253.35
2217.05    1.721   253.58
2218.05    1.723   253.80
2219.05    1.725   254.03
2220.05    1.727   254.25
2221.05    1.729   254.48
2222.05    1.731   254.70
2223.05    1.732   254.93
2224.05    1.734   255.15
2225.05    1.735   255.38
2226.05    1.737   255.60






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 4.0.


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 17:46:19



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