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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:25:11

Orbital Elements for BU867
WDS: BU867 WDS ID/Discoverer
P: 232.040 Orbital period (years)
a: 0.813 Semi-major axis (arcseconds)
i: 98.9 Inclination (degrees)
Ω: 354.2 Longitude of ascending node (degrees)
T: 2012.720 Epoch of periastron passage (year)
e: 0.23 Eccentricity
ω: 2.9 Longitude of periastron (degrees)
Start-Year: 1909.0 Year
End-Year: 2141.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU867
Position: 010121.77+115445.9 Epoch-2000 right ascension and declination
WDS-ID: 01014+1155 WDS designation
Discoverer Code: BU867 Discover designation and components
ADS number: 828 Aitken Double Star catalog
HD number: 5988 HD catalog number
Hipparcos number: 4775 Hipparcos catalog number
V1: 8.23 Magnitude of the primary
V2: 9.34 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2003 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BU867



WDS 6th Orbit including measures of BU867

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


Ephemeris of BU867
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.538    348.3
-------------------------
1909.0     0.959    171.8
1910.0     0.953    171.6
1911.0     0.947    171.4
1912.0     0.941    171.3
1913.0     0.934    171.1
1914.0     0.927    170.9
1915.0     0.919    170.7
1916.0     0.911    170.6
1917.0     0.903    170.4
1918.0     0.894    170.2
1919.0     0.885    170.0
1920.0     0.875    169.8
1921.0     0.866    169.6
1922.0     0.855    169.4
1923.0     0.845    169.2
1924.0     0.834    168.9
1925.0     0.823    168.7
1926.0     0.811    168.5
1927.0     0.799    168.2
1928.0     0.787    168.0
1929.0     0.774    167.7
1930.0     0.761    167.5
1931.0     0.748    167.2
1932.0     0.734    166.9
1933.0     0.720    166.6
1934.0     0.706    166.3
1935.0     0.692    166.0
1936.0     0.677    165.7
1937.0     0.662    165.3
1938.0     0.646    165.0
1939.0     0.630    164.6
1940.0     0.614    164.2
1941.0     0.598    163.8
1942.0     0.581    163.3
1943.0     0.564    162.9
1944.0     0.547    162.4
1945.0     0.530    161.8
1946.0     0.512    161.3
1947.0     0.494    160.7
1948.0     0.476    160.0
1949.0     0.458    159.3
1950.0     0.439    158.5
1951.0     0.421    157.7
1952.0     0.402    156.8
1953.0     0.383    155.8
1954.0     0.364    154.7
1955.0     0.345    153.4
1956.0     0.326    152.1
1957.0     0.306    150.5
1958.0     0.287    148.8
1959.0     0.268    146.7
1960.0     0.249    144.4
1961.0     0.231    141.8
1962.0     0.213    138.6
1963.0     0.195    134.9
1964.0     0.179    130.5
1965.0     0.163    125.2
1966.0     0.149    118.8
1967.0     0.137    111.3
1968.0     0.128    102.5
1969.0     0.122     92.6
1970.0     0.120     82.1
1971.0     0.122     71.6
1972.0     0.128     61.7
1973.0     0.137     52.9
1974.0     0.149     45.4
1975.0     0.163     39.0
1976.0     0.179     33.7
1977.0     0.195     29.3
1978.0     0.212     25.5
1979.0     0.230     22.4
1980.0     0.248     19.7
1981.0     0.267     17.4
1982.0     0.286     15.3
1983.0     0.304     13.5
1984.0     0.323     12.0
1985.0     0.341     10.6
1986.0     0.359      9.3
1987.0     0.377      8.2
1988.0     0.395      7.1
1989.0     0.412      6.2
1990.0     0.429      5.3
1991.0     0.445      4.5
1992.0     0.461      3.7
1993.0     0.476      3.0
1994.0     0.491      2.4
1995.0     0.505      1.8
1996.0     0.519      1.2
1997.0     0.532      0.6
1998.0     0.544      0.1
1999.0     0.555    359.6
2000.0     0.566    359.1
2001.0     0.576    358.6
2002.0     0.585    358.1
2003.0     0.593    357.7
2004.0     0.601    357.3
2005.0     0.607    356.8
2006.0     0.613    356.4
2007.0     0.617    356.0
2008.0     0.621    355.6
2009.0     0.624    355.2
2010.0     0.625    354.8
2011.0     0.626    354.4
2012.0     0.626    354.0
2013.0     0.625    353.6
2014.0     0.623    353.2
2015.0     0.620    352.8
2016.0     0.616    352.4
2017.0     0.610    352.0
2018.0     0.605    351.6
2019.0     0.598    351.2
2020.0     0.590    350.7
2021.0     0.581    350.3
2022.0     0.572    349.8
2023.0     0.561    349.3
2024.0     0.550    348.8
2025.0     0.538    348.3
2026.0     0.525    347.8
2027.0     0.512    347.2
2028.0     0.498    346.6
2029.0     0.483    346.0
2030.0     0.468    345.3
2031.0     0.452    344.5
2032.0     0.435    343.8
2033.0     0.418    342.9
2034.0     0.401    342.0
2035.0     0.383    341.0
2036.0     0.365    339.9
2037.0     0.346    338.7
2038.0     0.328    337.3
2039.0     0.309    335.8
2040.0     0.290    334.1
2041.0     0.271    332.1
2042.0     0.252    329.8
2043.0     0.233    327.2
2044.0     0.214    324.1
2045.0     0.196    320.4
2046.0     0.179    316.0
2047.0     0.163    310.7
2048.0     0.148    304.3
2049.0     0.136    296.6
2050.0     0.126    287.6
2051.0     0.120    277.3
2052.0     0.118    266.3
2053.0     0.120    255.3
2054.0     0.126    245.0
2055.0     0.136    236.0
2056.0     0.148    228.3
2057.0     0.163    221.9
2058.0     0.179    216.6
2059.0     0.196    212.2
2060.0     0.215    208.5
2061.0     0.233    205.4
2062.0     0.252    202.8
2063.0     0.272    200.6
2064.0     0.291    198.6
2065.0     0.311    196.9
2066.0     0.331    195.4
2067.0     0.350    194.1
2068.0     0.370    192.9
2069.0     0.389    191.8
2070.0     0.409    190.8
2071.0     0.428    189.9
2072.0     0.447    189.1
2073.0     0.466    188.4
2074.0     0.484    187.7
2075.0     0.503    187.1
2076.0     0.521    186.5
2077.0     0.539    185.9
2078.0     0.556    185.4
2079.0     0.574    184.9
2080.0     0.591    184.5
2081.0     0.607    184.0
2082.0     0.624    183.6
2083.0     0.640    183.3
2084.0     0.656    182.9
2085.0     0.672    182.5
2086.0     0.687    182.2
2087.0     0.702    181.9
2088.0     0.716    181.6
2089.0     0.731    181.3
2090.0     0.744    181.0
2091.0     0.758    180.7
2092.0     0.771    180.5
2093.0     0.784    180.2
2094.0     0.797    180.0
2095.0     0.809    179.7
2096.0     0.821    179.5
2097.0     0.832    179.3
2098.0     0.843    179.0
2099.0     0.854    178.8
2100.0     0.864    178.6
2101.0     0.874    178.4
2102.0     0.884    178.2
2103.0     0.893    178.0
2104.0     0.902    177.8
2105.0     0.910    177.6
2106.0     0.918    177.5
2107.0     0.926    177.3
2108.0     0.933    177.1
2109.0     0.940    176.9
2110.0     0.947    176.7
2111.0     0.953    176.6
2112.0     0.959    176.4
2113.0     0.964    176.2
2114.0     0.969    176.1
2115.0     0.974    175.9
2116.0     0.978    175.7
2117.0     0.982    175.6
2118.0     0.986    175.4
2119.0     0.989    175.3
2120.0     0.991    175.1
2121.0     0.994    175.0
2122.0     0.996    174.8
2123.0     0.997    174.6
2124.0     0.998    174.5
2125.0     0.999    174.3
2126.0     1.000    174.2
2127.0     1.000    174.0
2128.0     0.999    173.9
2129.0     0.999    173.7
2130.0     0.997    173.6
2131.0     0.996    173.4
2132.0     0.994    173.2
2133.0     0.992    173.1
2134.0     0.989    172.9
2135.0     0.986    172.8
2136.0     0.982    172.6
2137.0     0.979    172.5
2138.0     0.974    172.3
2139.0     0.970    172.1
2140.0     0.965    172.0






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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