Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:27:58

Orbital Elements for BU239
WDS: BU239 WDS ID/Discoverer
P: 429.190 Orbital period (years)
a: 0.836 Semi-major axis (arcseconds)
i: 66.9 Inclination (degrees)
Ω: 126.6 Longitude of ascending node (degrees)
T: 2217.250 Epoch of periastron passage (year)
e: 0.337 Eccentricity
ω: 75.5 Longitude of periastron (degrees)
Start-Year: 1811.0 Year
End-Year: 2239.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU239
Position: 145839.26-273926.3 Epoch-2000 right ascension and declination
WDS-ID: 14587-2739 WDS designation
Discoverer Code: BU239 Discover designation and components
ADS number: 9453 Aitken Double Star catalog
HD number: 132219 HD catalog number
Hipparcos number: 73284 Hipparcos catalog number
V1: 6.17 Magnitude of the primary
V2: 6.79 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1998 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BU239



WDS 6th Orbit including measures of BU239

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


Ephemeris of BU239
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.443     25.1
-------------------------
1811.0     0.325    266.6
1812.0     0.337    268.6
1813.0     0.348    270.5
1814.0     0.360    272.2
1815.0     0.371    273.8
1816.0     0.383    275.3
1817.0     0.395    276.8
1818.0     0.407    278.1
1819.0     0.418    279.4
1820.0     0.430    280.6
1821.0     0.442    281.7
1822.0     0.453    282.8
1823.0     0.465    283.8
1824.0     0.476    284.8
1825.0     0.488    285.7
1826.0     0.499    286.6
1827.0     0.510    287.5
1828.0     0.521    288.3
1829.0     0.532    289.1
1830.0     0.542    289.8
1831.0     0.553    290.6
1832.0     0.563    291.3
1833.0     0.573    291.9
1834.0     0.583    292.6
1835.0     0.593    293.2
1836.0     0.603    293.8
1837.0     0.613    294.4
1838.0     0.622    295.0
1839.0     0.631    295.5
1840.0     0.640    296.0
1841.0     0.649    296.6
1842.0     0.657    297.1
1843.0     0.666    297.6
1844.0     0.674    298.0
1845.0     0.682    298.5
1846.0     0.690    299.0
1847.0     0.698    299.4
1848.0     0.705    299.9
1849.0     0.713    300.3
1850.0     0.720    300.7
1851.0     0.727    301.1
1852.0     0.733    301.5
1853.0     0.740    301.9
1854.0     0.746    302.3
1855.0     0.753    302.7
1856.0     0.759    303.1
1857.0     0.765    303.5
1858.0     0.770    303.8
1859.0     0.776    304.2
1860.0     0.781    304.6
1861.0     0.786    304.9
1862.0     0.791    305.3
1863.0     0.796    305.6
1864.0     0.801    305.9
1865.0     0.805    306.3
1866.0     0.809    306.6
1867.0     0.814    306.9
1868.0     0.818    307.3
1869.0     0.821    307.6
1870.0     0.825    307.9
1871.0     0.829    308.2
1872.0     0.832    308.5
1873.0     0.835    308.8
1874.0     0.838    309.2
1875.0     0.841    309.5
1876.0     0.844    309.8
1877.0     0.847    310.1
1878.0     0.849    310.4
1879.0     0.851    310.7
1880.0     0.853    311.0
1881.0     0.855    311.3
1882.0     0.857    311.6
1883.0     0.859    311.9
1884.0     0.861    312.2
1885.0     0.862    312.4
1886.0     0.864    312.7
1887.0     0.865    313.0
1888.0     0.866    313.3
1889.0     0.867    313.6
1890.0     0.868    313.9
1891.0     0.868    314.2
1892.0     0.869    314.5
1893.0     0.869    314.8
1894.0     0.870    315.0
1895.0     0.870    315.3
1896.0     0.870    315.6
1897.0     0.870    315.9
1898.0     0.870    316.2
1899.0     0.870    316.5
1900.0     0.869    316.8
1901.0     0.869    317.0
1902.0     0.868    317.3
1903.0     0.868    317.6
1904.0     0.867    317.9
1905.0     0.866    318.2
1906.0     0.865    318.5
1907.0     0.864    318.8
1908.0     0.863    319.1
1909.0     0.862    319.4
1910.0     0.860    319.6
1911.0     0.859    319.9
1912.0     0.857    320.2
1913.0     0.856    320.5
1914.0     0.854    320.8
1915.0     0.852    321.1
1916.0     0.850    321.4
1917.0     0.848    321.7
1918.0     0.846    322.0
1919.0     0.844    322.3
1920.0     0.842    322.6
1921.0     0.839    322.9
1922.0     0.837    323.2
1923.0     0.834    323.6
1924.0     0.832    323.9
1925.0     0.829    324.2
1926.0     0.826    324.5
1927.0     0.824    324.8
1928.0     0.821    325.1
1929.0     0.818    325.5
1930.0     0.815    325.8
1931.0     0.812    326.1
1932.0     0.809    326.4
1933.0     0.806    326.8
1934.0     0.802    327.1
1935.0     0.799    327.4
1936.0     0.796    327.8
1937.0     0.792    328.1
1938.0     0.789    328.5
1939.0     0.785    328.8
1940.0     0.781    329.2
1941.0     0.778    329.5
1942.0     0.774    329.9
1943.0     0.770    330.3
1944.0     0.767    330.6
1945.0     0.763    331.0
1946.0     0.759    331.4
1947.0     0.755    331.7
1948.0     0.751    332.1
1949.0     0.747    332.5
1950.0     0.743    332.9
1951.0     0.739    333.3
1952.0     0.734    333.7
1953.0     0.730    334.1
1954.0     0.726    334.5
1955.0     0.722    334.9
1956.0     0.717    335.3
1957.0     0.713    335.8
1958.0     0.709    336.2
1959.0     0.704    336.6
1960.0     0.700    337.1
1961.0     0.695    337.5
1962.0     0.691    338.0
1963.0     0.686    338.4
1964.0     0.682    338.9
1965.0     0.677    339.4
1966.0     0.673    339.8
1967.0     0.668    340.3
1968.0     0.663    340.8
1969.0     0.659    341.3
1970.0     0.654    341.8
1971.0     0.650    342.3
1972.0     0.645    342.8
1973.0     0.640    343.3
1974.0     0.636    343.9
1975.0     0.631    344.4
1976.0     0.626    345.0
1977.0     0.622    345.5
1978.0     0.617    346.1
1979.0     0.612    346.7
1980.0     0.608    347.2
1981.0     0.603    347.8
1982.0     0.598    348.4
1983.0     0.594    349.0
1984.0     0.589    349.7
1985.0     0.584    350.3
1986.0     0.580    350.9
1987.0     0.575    351.6
1988.0     0.571    352.2
1989.0     0.566    352.9
1990.0     0.562    353.6
1991.0     0.557    354.3
1992.0     0.553    355.0
1993.0     0.549    355.7
1994.0     0.544    356.4
1995.0     0.540    357.2
1996.0     0.536    357.9
1997.0     0.531    358.7
1998.0     0.527    359.4
1999.0     0.523      0.2
2000.0     0.519      1.0
2001.0     0.515      1.8
2002.0     0.511      2.7
2003.0     0.507      3.5
2004.0     0.503      4.3
2005.0     0.500      5.2
2006.0     0.496      6.1
2007.0     0.492      7.0
2008.0     0.489      7.9
2009.0     0.485      8.8
2010.0     0.482      9.7
2011.0     0.479     10.6
2012.0     0.475     11.6
2013.0     0.472     12.6
2014.0     0.469     13.5
2015.0     0.466     14.5
2016.0     0.463     15.5
2017.0     0.461     16.5
2018.0     0.458     17.6
2019.0     0.456     18.6
2020.0     0.453     19.7
2021.0     0.451     20.7
2022.0     0.449     21.8
2023.0     0.447     22.9
2024.0     0.445     24.0
2025.0     0.443     25.1
2026.0     0.441     26.2
2027.0     0.439     27.3
2028.0     0.438     28.4
2029.0     0.437     29.5
2030.0     0.436     30.7
2031.0     0.434     31.8
2032.0     0.434     33.0
2033.0     0.433     34.1
2034.0     0.432     35.3
2035.0     0.432     36.5
2036.0     0.431     37.6
2037.0     0.431     38.8
2038.0     0.431     39.9
2039.0     0.431     41.1
2040.0     0.431     42.3
2041.0     0.431     43.4
2042.0     0.432     44.6
2043.0     0.432     45.8
2044.0     0.433     46.9
2045.0     0.434     48.1
2046.0     0.435     49.2
2047.0     0.436     50.4
2048.0     0.437     51.5
2049.0     0.439     52.6
2050.0     0.440     53.8
2051.0     0.442     54.9
2052.0     0.444     56.0
2053.0     0.445     57.1
2054.0     0.447     58.2
2055.0     0.449     59.2
2056.0     0.452     60.3
2057.0     0.454     61.4
2058.0     0.456     62.4
2059.0     0.459     63.4
2060.0     0.462     64.5
2061.0     0.464     65.5
2062.0     0.467     66.5
2063.0     0.470     67.4
2064.0     0.473     68.4
2065.0     0.476     69.4
2066.0     0.479     70.3
2067.0     0.482     71.3
2068.0     0.486     72.2
2069.0     0.489     73.1
2070.0     0.493     74.0
2071.0     0.496     74.9
2072.0     0.500     75.8
2073.0     0.503     76.6
2074.0     0.507     77.5
2075.0     0.511     78.3
2076.0     0.514     79.1
2077.0     0.518     79.9
2078.0     0.522     80.7
2079.0     0.526     81.5
2080.0     0.530     82.3
2081.0     0.534     83.1
2082.0     0.538     83.8
2083.0     0.542     84.6
2084.0     0.546     85.3
2085.0     0.550     86.0
2086.0     0.554     86.7
2087.0     0.558     87.4
2088.0     0.563     88.1
2089.0     0.567     88.8
2090.0     0.571     89.5
2091.0     0.575     90.1
2092.0     0.579     90.8
2093.0     0.583     91.4
2094.0     0.587     92.1
2095.0     0.592     92.7
2096.0     0.596     93.3
2097.0     0.600     93.9
2098.0     0.604     94.5
2099.0     0.608     95.1
2100.0     0.612     95.7
2101.0     0.616     96.2
2102.0     0.620     96.8
2103.0     0.624     97.4
2104.0     0.628     97.9
2105.0     0.632     98.5
2106.0     0.636     99.0
2107.0     0.639     99.5
2108.0     0.643    100.1
2109.0     0.647    100.6
2110.0     0.651    101.1
2111.0     0.654    101.6
2112.0     0.658    102.1
2113.0     0.661    102.6
2114.0     0.665    103.1
2115.0     0.668    103.6
2116.0     0.672    104.1
2117.0     0.675    104.6
2118.0     0.678    105.0
2119.0     0.681    105.5
2120.0     0.684    106.0
2121.0     0.687    106.4
2122.0     0.690    106.9
2123.0     0.693    107.3
2124.0     0.696    107.8
2125.0     0.698    108.2
2126.0     0.701    108.7
2127.0     0.703    109.1
2128.0     0.706    109.5
2129.0     0.708    110.0
2130.0     0.710    110.4
2131.0     0.712    110.8
2132.0     0.714    111.3
2133.0     0.716    111.7
2134.0     0.717    112.1
2135.0     0.719    112.5
2136.0     0.720    112.9
2137.0     0.722    113.4
2138.0     0.723    113.8
2139.0     0.724    114.2
2140.0     0.725    114.6
2141.0     0.726    115.0
2142.0     0.727    115.4
2143.0     0.727    115.8
2144.0     0.727    116.2
2145.0     0.728    116.7
2146.0     0.728    117.1
2147.0     0.728    117.5
2148.0     0.728    117.9
2149.0     0.727    118.3
2150.0     0.727    118.7
2151.0     0.726    119.1
2152.0     0.725    119.5
2153.0     0.724    119.9
2154.0     0.723    120.3
2155.0     0.721    120.8
2156.0     0.720    121.2
2157.0     0.718    121.6
2158.0     0.716    122.0
2159.0     0.714    122.4
2160.0     0.711    122.9
2161.0     0.709    123.3
2162.0     0.706    123.7
2163.0     0.703    124.2
2164.0     0.700    124.6
2165.0     0.697    125.1
2166.0     0.693    125.5
2167.0     0.689    126.0
2168.0     0.685    126.4
2169.0     0.681    126.9
2170.0     0.676    127.3
2171.0     0.672    127.8
2172.0     0.667    128.3
2173.0     0.662    128.8
2174.0     0.656    129.3
2175.0     0.650    129.8
2176.0     0.645    130.3
2177.0     0.638    130.8
2178.0     0.632    131.4
2179.0     0.625    131.9
2180.0     0.619    132.5
2181.0     0.612    133.1
2182.0     0.604    133.6
2183.0     0.597    134.3
2184.0     0.589    134.9
2185.0     0.581    135.5
2186.0     0.573    136.2
2187.0     0.564    136.8
2188.0     0.555    137.5
2189.0     0.546    138.2
2190.0     0.537    139.0
2191.0     0.528    139.7
2192.0     0.518    140.5
2193.0     0.508    141.3
2194.0     0.498    142.2
2195.0     0.488    143.1
2196.0     0.478    144.0
2197.0     0.467    145.0
2198.0     0.457    146.0
2199.0     0.446    147.1
2200.0     0.435    148.2
2201.0     0.424    149.4
2202.0     0.412    150.6
2203.0     0.401    151.9
2204.0     0.390    153.3
2205.0     0.378    154.8
2206.0     0.367    156.3
2207.0     0.356    158.0
2208.0     0.345    159.7
2209.0     0.333    161.6
2210.0     0.322    163.6
2211.0     0.312    165.8
2212.0     0.301    168.1
2213.0     0.291    170.6
2214.0     0.281    173.2
2215.0     0.271    176.1
2216.0     0.262    179.1
2217.0     0.254    182.4
2218.0     0.246    185.8
2219.0     0.240    189.5
2220.0     0.234    193.4
2221.0     0.229    197.4
2222.0     0.224    201.6
2223.0     0.222    206.0
2224.0     0.220    210.5
2225.0     0.219    215.0
2226.0     0.220    219.5
2227.0     0.222    223.9
2228.0     0.224    228.3
2229.0     0.228    232.5
2230.0     0.234    236.6
2231.0     0.240    240.4
2232.0     0.247    244.1
2233.0     0.254    247.6
2234.0     0.263    250.8
2235.0     0.272    253.8
2236.0     0.281    256.7
2237.0     0.291    259.3
2238.0     0.302    261.8






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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.


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