Double Star Calculator - Orbit

Orbital Elements for BU609
WDS: BU609 WDS ID/Discoverer
P: 500.000 Orbital period (years)
a: 0.627 Semi-major axis (arcseconds)
i: 96.5 Inclination (degrees)
Ω: 173.8 Longitude of ascending node (degrees)
T: 2026.700 Epoch of periastron passage (year)
e: 0.594 Eccentricity
ω: 327.6 Longitude of periastron (degrees)
Start-Year: 1775.0 Year
End-Year: 2275.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU609
Position: 131042.41-045630.5 Epoch-2000 right ascension and declination
WDS-ID: 13107-0457 WDS designation
Discoverer Code: BU609 Discover designation and components
ADS number: 8807 Aitken Double Star catalog
HD number: 114449 HD catalog number
Hipparcos number: 64296 Hipparcos catalog number
V1: 7.82 Magnitude of the primary
V2: 10.14 Magnitude of the secondary
Equinox: Equinox
Date: 2021 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: Tok2021f Reference

Double Star Orbit for BU609



WDS 6th Orbit including measures of BU609

-- 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 BU609
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.214   178.02
--------------------------
1775.00    0.842   357.97
1776.00    0.845   357.93
1777.00    0.847   357.90
1778.00    0.849   357.86
1779.00    0.851   357.83
1780.00    0.853   357.79
1781.00    0.855   357.76
1782.00    0.857   357.72
1783.00    0.859   357.69
1784.00    0.860   357.65
1785.00    0.862   357.62
1786.00    0.864   357.58
1787.00    0.866   357.55
1788.00    0.868   357.51
1789.00    0.869   357.48
1790.00    0.871   357.44
1791.00    0.873   357.41
1792.00    0.874   357.38
1793.00    0.876   357.34
1794.00    0.877   357.31
1795.00    0.879   357.28
1796.00    0.880   357.24
1797.00    0.882   357.21
1798.00    0.883   357.18
1799.00    0.885   357.14
1800.00    0.886   357.11
1801.00    0.887   357.08
1802.00    0.888   357.05
1803.00    0.890   357.01
1804.00    0.891   356.98
1805.00    0.892   356.95
1806.00    0.893   356.92
1807.00    0.894   356.88
1808.00    0.895   356.85
1809.00    0.896   356.82
1810.00    0.897   356.79
1811.00    0.898   356.75
1812.00    0.899   356.72
1813.00    0.900   356.69
1814.00    0.901   356.66
1815.00    0.902   356.63
1816.00    0.902   356.60
1817.00    0.903   356.56
1818.00    0.904   356.53
1819.00    0.904   356.50
1820.00    0.905   356.47
1821.00    0.906   356.44
1822.00    0.906   356.41
1823.00    0.907   356.37
1824.00    0.907   356.34
1825.00    0.907   356.31
1826.00    0.908   356.28
1827.00    0.908   356.25
1828.00    0.908   356.22
1829.00    0.909   356.19
1830.00    0.909   356.16
1831.00    0.909   356.12
1832.00    0.909   356.09
1833.00    0.909   356.06
1834.00    0.909   356.03
1835.00    0.910   356.00
1836.00    0.910   355.97
1837.00    0.909   355.94
1838.00    0.909   355.91
1839.00    0.909   355.88
1840.00    0.909   355.84
1841.00    0.909   355.81
1842.00    0.909   355.78
1843.00    0.908   355.75
1844.00    0.908   355.72
1845.00    0.908   355.69
1846.00    0.907   355.66
1847.00    0.907   355.63
1848.00    0.906   355.59
1849.00    0.906   355.56
1850.00    0.905   355.53
1851.00    0.904   355.50
1852.00    0.904   355.47
1853.00    0.903   355.44
1854.00    0.902   355.41
1855.00    0.902   355.37
1856.00    0.901   355.34
1857.00    0.900   355.31
1858.00    0.899   355.28
1859.00    0.898   355.25
1860.00    0.897   355.21
1861.00    0.896   355.18
1862.00    0.895   355.15
1863.00    0.894   355.12
1864.00    0.892   355.09
1865.00    0.891   355.05
1866.00    0.890   355.02
1867.00    0.888   354.99
1868.00    0.887   354.95
1869.00    0.886   354.92
1870.00    0.884   354.89
1871.00    0.883   354.86
1872.00    0.881   354.82
1873.00    0.879   354.79
1874.00    0.878   354.76
1875.00    0.876   354.72
1876.00    0.874   354.69
1877.00    0.872   354.66
1878.00    0.871   354.62
1879.00    0.869   354.59
1880.00    0.867   354.55
1881.00    0.865   354.52
1882.00    0.863   354.48
1883.00    0.860   354.45
1884.00    0.858   354.41
1885.00    0.856   354.38
1886.00    0.854   354.34
1887.00    0.851   354.31
1888.00    0.849   354.27
1889.00    0.847   354.24
1890.00    0.844   354.20
1891.00    0.842   354.16
1892.00    0.839   354.13
1893.00    0.836   354.09
1894.00    0.834   354.05
1895.00    0.831   354.02
1896.00    0.828   353.98
1897.00    0.825   353.94
1898.00    0.822   353.90
1899.00    0.819   353.87
1900.00    0.816   353.83
1901.00    0.813   353.79
1902.00    0.810   353.75
1903.00    0.807   353.71
1904.00    0.803   353.67
1905.00    0.800   353.63
1906.00    0.797   353.59
1907.00    0.793   353.55
1908.00    0.790   353.51
1909.00    0.786   353.47
1910.00    0.782   353.42
1911.00    0.779   353.38
1912.00    0.775   353.34
1913.00    0.771   353.30
1914.00    0.767   353.25
1915.00    0.763   353.21
1916.00    0.759   353.16
1917.00    0.755   353.12
1918.00    0.751   353.07
1919.00    0.747   353.03
1920.00    0.742   352.98
1921.00    0.738   352.93
1922.00    0.734   352.89
1923.00    0.729   352.84
1924.00    0.725   352.79
1925.00    0.720   352.74
1926.00    0.715   352.69
1927.00    0.710   352.64
1928.00    0.706   352.59
1929.00    0.701   352.54
1930.00    0.696   352.48
1931.00    0.690   352.43
1932.00    0.685   352.37
1933.00    0.680   352.32
1934.00    0.675   352.26
1935.00    0.669   352.21
1936.00    0.664   352.15
1937.00    0.658   352.09
1938.00    0.653   352.03
1939.00    0.647   351.97
1940.00    0.641   351.91
1941.00    0.635   351.84
1942.00    0.629   351.78
1943.00    0.623   351.71
1944.00    0.617   351.65
1945.00    0.611   351.58
1946.00    0.605   351.51
1947.00    0.598   351.44
1948.00    0.592   351.36
1949.00    0.585   351.29
1950.00    0.578   351.21
1951.00    0.572   351.13
1952.00    0.565   351.05
1953.00    0.558   350.97
1954.00    0.551   350.89
1955.00    0.544   350.80
1956.00    0.536   350.71
1957.00    0.529   350.62
1958.00    0.522   350.53
1959.00    0.514   350.43
1960.00    0.506   350.34
1961.00    0.499   350.23
1962.00    0.491   350.13
1963.00    0.483   350.02
1964.00    0.475   349.91
1965.00    0.467   349.79
1966.00    0.458   349.67
1967.00    0.450   349.54
1968.00    0.441   349.42
1969.00    0.433   349.28
1970.00    0.424   349.14
1971.00    0.415   348.99
1972.00    0.406   348.84
1973.00    0.397   348.68
1974.00    0.388   348.51
1975.00    0.379   348.34
1976.00    0.369   348.15
1977.00    0.360   347.96
1978.00    0.350   347.76
1979.00    0.340   347.54
1980.00    0.330   347.31
1981.00    0.320   347.07
1982.00    0.310   346.81
1983.00    0.300   346.53
1984.00    0.290   346.23
1985.00    0.279   345.91
1986.00    0.268   345.57
1987.00    0.258   345.20
1988.00    0.247   344.79
1989.00    0.236   344.35
1990.00    0.225   343.86
1991.00    0.213   343.32
1992.00    0.202   342.73
1993.00    0.191   342.06
1994.00    0.179   341.30
1995.00    0.168   340.44
1996.00    0.156   339.46
1997.00    0.144   338.31
1998.00    0.132   336.96
1999.00    0.120   335.34
2000.00    0.109   333.37
2001.00    0.097   330.92
2002.00    0.085   327.81
2003.00    0.074   323.72
2004.00    0.063   318.18
2005.00    0.053   310.42
2006.00    0.044   299.27
2007.00    0.038   283.49
2008.00    0.035   263.39
2009.00    0.037   242.78
2010.00    0.043   226.03
2011.00    0.051   214.06
2012.00    0.061   205.73
2013.00    0.072   199.82
2014.00    0.083   195.48
2015.00    0.094   192.18
2016.00    0.106   189.59
2017.00    0.117   187.51
2018.00    0.129   185.80
2019.00    0.140   184.37
2020.00    0.151   183.14
2021.00    0.161   182.08
2022.00    0.172   181.15
2023.00    0.182   180.33
2024.00    0.192   179.59
2025.00    0.201   178.92
2026.00    0.210   178.31
2027.00    0.218   177.74
2028.00    0.226   177.22
2029.00    0.233   176.73
2030.00    0.240   176.27
2031.00    0.246   175.83
2032.00    0.252   175.42
2033.00    0.257   175.02
2034.00    0.262   174.64
2035.00    0.266   174.27
2036.00    0.269   173.91
2037.00    0.272   173.56
2038.00    0.275   173.21
2039.00    0.277   172.87
2040.00    0.278   172.54
2041.00    0.279   172.21
2042.00    0.280   171.88
2043.00    0.280   171.55
2044.00    0.280   171.22
2045.00    0.279   170.89
2046.00    0.278   170.56
2047.00    0.277   170.22
2048.00    0.275   169.89
2049.00    0.273   169.54
2050.00    0.271   169.19
2051.00    0.268   168.84
2052.00    0.266   168.48
2053.00    0.262   168.11
2054.00    0.259   167.73
2055.00    0.256   167.34
2056.00    0.252   166.94
2057.00    0.248   166.53
2058.00    0.244   166.10
2059.00    0.240   165.66
2060.00    0.235   165.20
2061.00    0.231   164.73
2062.00    0.226   164.23
2063.00    0.221   163.72
2064.00    0.216   163.18
2065.00    0.211   162.61
2066.00    0.206   162.02
2067.00    0.201   161.40
2068.00    0.196   160.74
2069.00    0.190   160.05
2070.00    0.185   159.32
2071.00    0.179   158.54
2072.00    0.174   157.72
2073.00    0.168   156.84
2074.00    0.163   155.90
2075.00    0.157   154.89
2076.00    0.152   153.82
2077.00    0.146   152.66
2078.00    0.141   151.40
2079.00    0.135   150.05
2080.00    0.130   148.58
2081.00    0.124   146.98
2082.00    0.119   145.24
2083.00    0.114   143.34
2084.00    0.109   141.25
2085.00    0.104   138.96
2086.00    0.099   136.43
2087.00    0.094   133.65
2088.00    0.090   130.59
2089.00    0.085   127.21
2090.00    0.081   123.50
2091.00    0.078   119.43
2092.00    0.075   114.99
2093.00    0.072   110.20
2094.00    0.070   105.09
2095.00    0.068    99.69
2096.00    0.067    94.09
2097.00    0.067    88.39
2098.00    0.068    82.69
2099.00    0.069    77.11
2100.00    0.070    71.73
2101.00    0.072    66.64
2102.00    0.075    61.89
2103.00    0.078    57.49
2104.00    0.082    53.46
2105.00    0.086    49.78
2106.00    0.090    46.44
2107.00    0.095    43.41
2108.00    0.099    40.66
2109.00    0.104    38.17
2110.00    0.109    35.90
2111.00    0.115    33.85
2112.00    0.120    31.97
2113.00    0.125    30.25
2114.00    0.131    28.68
2115.00    0.137    27.24
2116.00    0.142    25.92
2117.00    0.148    24.69
2118.00    0.154    23.56
2119.00    0.160    22.51
2120.00    0.165    21.53
2121.00    0.171    20.62
2122.00    0.177    19.77
2123.00    0.183    18.98
2124.00    0.189    18.23
2125.00    0.195    17.54
2126.00    0.201    16.88
2127.00    0.207    16.26
2128.00    0.213    15.67
2129.00    0.219    15.12
2130.00    0.225    14.59
2131.00    0.231    14.10
2132.00    0.237    13.63
2133.00    0.243    13.18
2134.00    0.248    12.75
2135.00    0.254    12.34
2136.00    0.260    11.95
2137.00    0.266    11.58
2138.00    0.272    11.22
2139.00    0.278    10.88
2140.00    0.284    10.56
2141.00    0.290    10.24
2142.00    0.295     9.94
2143.00    0.301     9.65
2144.00    0.307     9.37
2145.00    0.313     9.10
2146.00    0.319     8.85
2147.00    0.324     8.60
2148.00    0.330     8.35
2149.00    0.336     8.12
2150.00    0.341     7.90
2151.00    0.347     7.68
2152.00    0.353     7.47
2153.00    0.358     7.26
2154.00    0.364     7.07
2155.00    0.369     6.87
2156.00    0.375     6.69
2157.00    0.380     6.51
2158.00    0.386     6.33
2159.00    0.391     6.16
2160.00    0.397     6.00
2161.00    0.402     5.83
2162.00    0.408     5.68
2163.00    0.413     5.52
2164.00    0.418     5.37
2165.00    0.424     5.23
2166.00    0.429     5.09
2167.00    0.434     4.95
2168.00    0.440     4.81
2169.00    0.445     4.68
2170.00    0.450     4.55
2171.00    0.455     4.43
2172.00    0.460     4.31
2173.00    0.466     4.19
2174.00    0.471     4.07
2175.00    0.476     3.95
2176.00    0.481     3.84
2177.00    0.486     3.73
2178.00    0.491     3.62
2179.00    0.496     3.52
2180.00    0.501     3.41
2181.00    0.506     3.31
2182.00    0.511     3.21
2183.00    0.516     3.11
2184.00    0.520     3.02
2185.00    0.525     2.92
2186.00    0.530     2.83
2187.00    0.535     2.74
2188.00    0.540     2.65
2189.00    0.544     2.56
2190.00    0.549     2.47
2191.00    0.554     2.39
2192.00    0.558     2.31
2193.00    0.563     2.22
2194.00    0.567     2.14
2195.00    0.572     2.06
2196.00    0.577     1.99
2197.00    0.581     1.91
2198.00    0.586     1.83
2199.00    0.590     1.76
2200.00    0.594     1.69
2201.00    0.599     1.61
2202.00    0.603     1.54
2203.00    0.607     1.47
2204.00    0.612     1.40
2205.00    0.616     1.33
2206.00    0.620     1.27
2207.00    0.625     1.20
2208.00    0.629     1.13
2209.00    0.633     1.07
2210.00    0.637     1.01
2211.00    0.641     0.94
2212.00    0.645     0.88
2213.00    0.649     0.82
2214.00    0.653     0.76
2215.00    0.657     0.70
2216.00    0.661     0.64
2217.00    0.665     0.58
2218.00    0.669     0.52
2219.00    0.673     0.46
2220.00    0.677     0.41
2221.00    0.681     0.35
2222.00    0.684     0.30
2223.00    0.688     0.24
2224.00    0.692     0.19
2225.00    0.696     0.13
2226.00    0.699     0.08
2227.00    0.703     0.03
2228.00    0.707   359.98
2229.00    0.710   359.93
2230.00    0.714   359.87
2231.00    0.717   359.82
2232.00    0.721   359.77
2233.00    0.724   359.72
2234.00    0.728   359.68
2235.00    0.731   359.63
2236.00    0.734   359.58
2237.00    0.738   359.53
2238.00    0.741   359.48
2239.00    0.744   359.44
2240.00    0.748   359.39
2241.00    0.751   359.35
2242.00    0.754   359.30
2243.00    0.757   359.26
2244.00    0.760   359.21
2245.00    0.764   359.17
2246.00    0.767   359.12
2247.00    0.770   359.08
2248.00    0.773   359.03
2249.00    0.776   358.99
2250.00    0.779   358.95
2251.00    0.782   358.91
2252.00    0.784   358.86
2253.00    0.787   358.82
2254.00    0.790   358.78
2255.00    0.793   358.74
2256.00    0.796   358.70
2257.00    0.798   358.66
2258.00    0.801   358.62
2259.00    0.804   358.58
2260.00    0.807   358.54
2261.00    0.809   358.50
2262.00    0.812   358.46
2263.00    0.814   358.42
2264.00    0.817   358.38
2265.00    0.819   358.34
2266.00    0.822   358.31
2267.00    0.824   358.27
2268.00    0.827   358.23
2269.00    0.829   358.19
2270.00    0.831   358.15
2271.00    0.834   358.12
2272.00    0.836   358.08
2273.00    0.838   358.04
2274.00    0.840   358.01






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 16:53:13



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