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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:12:13

Orbital Elements for BU984
WDS: BU984 WDS ID/Discoverer
P: 286.576 Orbital period (years)
a: 0.8 Semi-major axis (arcseconds)
i: 70.19 Inclination (degrees)
Ω: 43.99 Longitude of ascending node (degrees)
T: 2080.014 Epoch of periastron passage (year)
e: 0.0885 Eccentricity
ω: 2.98 Longitude of periastron (degrees)
Start-Year: 1882.0 Year
End-Year: 2168.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU984
Position: 201734.66+262213.0 Epoch-2000 right ascension and declination
WDS-ID: 20176+2622 WDS designation
Discoverer Code: BU984 Discover designation and components
ADS number: 13649 Aitken Double Star catalog
HD number: 193095 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 8.22 Magnitude of the primary
V2: 9.39 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1994 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for BU984



WDS 6th Orbit including measures of BU984

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


Ephemeris of BU984
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.319    350.4
-------------------------
1882.0     0.513    196.7
1883.0     0.525    197.7
1884.0     0.537    198.7
1885.0     0.548    199.6
1886.0     0.560    200.5
1887.0     0.572    201.3
1888.0     0.583    202.1
1889.0     0.594    202.9
1890.0     0.605    203.7
1891.0     0.616    204.4
1892.0     0.627    205.1
1893.0     0.638    205.8
1894.0     0.648    206.4
1895.0     0.659    207.1
1896.0     0.669    207.7
1897.0     0.679    208.3
1898.0     0.688    208.9
1899.0     0.698    209.4
1900.0     0.707    210.0
1901.0     0.716    210.5
1902.0     0.725    211.0
1903.0     0.734    211.5
1904.0     0.742    212.0
1905.0     0.750    212.5
1906.0     0.758    213.0
1907.0     0.766    213.5
1908.0     0.773    213.9
1909.0     0.780    214.4
1910.0     0.787    214.8
1911.0     0.794    215.3
1912.0     0.800    215.7
1913.0     0.806    216.1
1914.0     0.812    216.5
1915.0     0.818    216.9
1916.0     0.823    217.3
1917.0     0.828    217.7
1918.0     0.833    218.1
1919.0     0.837    218.5
1920.0     0.842    218.9
1921.0     0.846    219.3
1922.0     0.849    219.7
1923.0     0.853    220.0
1924.0     0.856    220.4
1925.0     0.858    220.8
1926.0     0.861    221.1
1927.0     0.863    221.5
1928.0     0.865    221.9
1929.0     0.867    222.2
1930.0     0.868    222.6
1931.0     0.869    222.9
1932.0     0.870    223.3
1933.0     0.870    223.7
1934.0     0.871    224.0
1935.0     0.871    224.4
1936.0     0.870    224.7
1937.0     0.870    225.1
1938.0     0.869    225.5
1939.0     0.867    225.8
1940.0     0.866    226.2
1941.0     0.864    226.5
1942.0     0.862    226.9
1943.0     0.859    227.3
1944.0     0.857    227.6
1945.0     0.854    228.0
1946.0     0.851    228.4
1947.0     0.847    228.8
1948.0     0.843    229.1
1949.0     0.839    229.5
1950.0     0.835    229.9
1951.0     0.830    230.3
1952.0     0.825    230.7
1953.0     0.820    231.1
1954.0     0.814    231.5
1955.0     0.809    231.9
1956.0     0.803    232.3
1957.0     0.796    232.8
1958.0     0.790    233.2
1959.0     0.783    233.6
1960.0     0.776    234.1
1961.0     0.769    234.5
1962.0     0.761    235.0
1963.0     0.754    235.5
1964.0     0.746    236.0
1965.0     0.737    236.4
1966.0     0.729    237.0
1967.0     0.720    237.5
1968.0     0.711    238.0
1969.0     0.702    238.5
1970.0     0.693    239.1
1971.0     0.683    239.7
1972.0     0.674    240.3
1973.0     0.664    240.9
1974.0     0.654    241.5
1975.0     0.643    242.1
1976.0     0.633    242.8
1977.0     0.622    243.5
1978.0     0.611    244.2
1979.0     0.600    245.0
1980.0     0.589    245.7
1981.0     0.578    246.5
1982.0     0.567    247.3
1983.0     0.555    248.2
1984.0     0.544    249.1
1985.0     0.532    250.0
1986.0     0.520    251.0
1987.0     0.509    252.0
1988.0     0.497    253.1
1989.0     0.485    254.2
1990.0     0.473    255.4
1991.0     0.461    256.7
1992.0     0.450    258.0
1993.0     0.438    259.4
1994.0     0.426    260.8
1995.0     0.415    262.3
1996.0     0.403    264.0
1997.0     0.392    265.7
1998.0     0.381    267.5
1999.0     0.370    269.4
2000.0     0.360    271.5
2001.0     0.349    273.6
2002.0     0.339    275.9
2003.0     0.330    278.3
2004.0     0.321    280.9
2005.0     0.313    283.6
2006.0     0.305    286.5
2007.0     0.298    289.5
2008.0     0.291    292.6
2009.0     0.285    295.9
2010.0     0.281    299.3
2011.0     0.277    302.8
2012.0     0.273    306.3
2013.0     0.271    310.0
2014.0     0.270    313.7
2015.0     0.270    317.4
2016.0     0.271    321.1
2017.0     0.273    324.8
2018.0     0.276    328.4
2019.0     0.280    331.9
2020.0     0.284    335.3
2021.0     0.290    338.6
2022.0     0.296    341.8
2023.0     0.303    344.8
2024.0     0.311    347.7
2025.0     0.319    350.4
2026.0     0.328    353.0
2027.0     0.337    355.5
2028.0     0.347    357.8
2029.0     0.357      0.0
2030.0     0.367      2.1
2031.0     0.378      4.1
2032.0     0.388      5.9
2033.0     0.399      7.7
2034.0     0.410      9.3
2035.0     0.422     10.9
2036.0     0.433     12.4
2037.0     0.444     13.8
2038.0     0.455     15.1
2039.0     0.467     16.4
2040.0     0.478     17.6
2041.0     0.489     18.8
2042.0     0.500     19.9
2043.0     0.511     20.9
2044.0     0.522     22.0
2045.0     0.533     22.9
2046.0     0.543     23.9
2047.0     0.554     24.8
2048.0     0.564     25.6
2049.0     0.574     26.5
2050.0     0.584     27.3
2051.0     0.593     28.1
2052.0     0.603     28.8
2053.0     0.612     29.6
2054.0     0.620     30.3
2055.0     0.629     31.0
2056.0     0.637     31.7
2057.0     0.645     32.3
2058.0     0.653     33.0
2059.0     0.660     33.6
2060.0     0.667     34.2
2061.0     0.673     34.8
2062.0     0.680     35.4
2063.0     0.686     36.0
2064.0     0.691     36.6
2065.0     0.696     37.1
2066.0     0.701     37.7
2067.0     0.706     38.2
2068.0     0.710     38.8
2069.0     0.714     39.3
2070.0     0.717     39.8
2071.0     0.720     40.4
2072.0     0.722     40.9
2073.0     0.725     41.4
2074.0     0.726     41.9
2075.0     0.728     42.4
2076.0     0.729     43.0
2077.0     0.729     43.5
2078.0     0.729     44.0
2079.0     0.729     44.5
2080.0     0.728     45.0
2081.0     0.727     45.5
2082.0     0.726     46.0
2083.0     0.724     46.5
2084.0     0.722     47.1
2085.0     0.719     47.6
2086.0     0.716     48.1
2087.0     0.712     48.6
2088.0     0.709     49.2
2089.0     0.704     49.7
2090.0     0.700     50.3
2091.0     0.695     50.8
2092.0     0.689     51.4
2093.0     0.684     52.0
2094.0     0.677     52.6
2095.0     0.671     53.2
2096.0     0.664     53.8
2097.0     0.657     54.4
2098.0     0.650     55.0
2099.0     0.642     55.7
2100.0     0.634     56.3
2101.0     0.626     57.0
2102.0     0.617     57.7
2103.0     0.608     58.4
2104.0     0.599     59.2
2105.0     0.589     60.0
2106.0     0.579     60.8
2107.0     0.570     61.6
2108.0     0.559     62.4
2109.0     0.549     63.3
2110.0     0.538     64.2
2111.0     0.528     65.2
2112.0     0.517     66.2
2113.0     0.506     67.2
2114.0     0.495     68.3
2115.0     0.483     69.4
2116.0     0.472     70.6
2117.0     0.460     71.9
2118.0     0.449     73.2
2119.0     0.438     74.6
2120.0     0.426     76.0
2121.0     0.415     77.6
2122.0     0.404     79.2
2123.0     0.392     80.9
2124.0     0.381     82.7
2125.0     0.370     84.6
2126.0     0.360     86.7
2127.0     0.350     88.8
2128.0     0.340     91.1
2129.0     0.330     93.5
2130.0     0.321     96.1
2131.0     0.312     98.8
2132.0     0.304    101.7
2133.0     0.297    104.7
2134.0     0.290    107.8
2135.0     0.284    111.1
2136.0     0.279    114.6
2137.0     0.275    118.1
2138.0     0.272    121.7
2139.0     0.269    125.4
2140.0     0.268    129.2
2141.0     0.268    133.0
2142.0     0.268    136.8
2143.0     0.270    140.5
2144.0     0.273    144.2
2145.0     0.277    147.8
2146.0     0.281    151.3
2147.0     0.287    154.6
2148.0     0.293    157.9
2149.0     0.301    160.9
2150.0     0.308    163.9
2151.0     0.317    166.7
2152.0     0.326    169.3
2153.0     0.335    171.8
2154.0     0.345    174.1
2155.0     0.355    176.3
2156.0     0.366    178.4
2157.0     0.377    180.4
2158.0     0.388    182.2
2159.0     0.400    184.0
2160.0     0.411    185.6
2161.0     0.423    187.2
2162.0     0.435    188.7
2163.0     0.446    190.1
2164.0     0.458    191.4
2165.0     0.470    192.7
2166.0     0.482    193.9
2167.0     0.494    195.0






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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