Double Star Calculator - Orbit

Orbital Elements for BU996AB
WDS: BU996AB WDS ID/Discoverer
P: 290.000 Orbital period (years)
a: 4.14 Semi-major axis (arcseconds)
i: 49.58 Inclination (degrees)
Ω: 93.91 Longitude of ascending node (degrees)
T: 2015.000 Epoch of periastron passage (year)
e: 0.55 Eccentricity
ω: 134.14 Longitude of periastron (degrees)
Start-Year: 1880.0 Year
End-Year: 2170.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU996AB
Position: 235225.28+753240.5 Epoch-2000 right ascension and declination
WDS-ID: 23524+7533 WDS designation
Discoverer Code: BU996AB Discover designation and components
ADS number: 17062 Aitken Double Star catalog
HD number: 223778 HD catalog number
Hipparcos number: 117712 Hipparcos catalog number
V1: 6.49 Magnitude of the primary
V2: 11.4 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1983 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Hle1994 Reference

Double Star Orbit for BU996AB



WDS 6th Orbit including measures of BU996AB

-- 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 BU996AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.160   278.54
--------------------------
1880.00    5.520    64.04
1881.00    5.532    64.42
1882.00    5.544    64.79
1883.00    5.555    65.17
1884.00    5.566    65.54
1885.00    5.576    65.91
1886.00    5.586    66.28
1887.00    5.595    66.65
1888.00    5.603    67.02
1889.00    5.612    67.38
1890.00    5.619    67.75
1891.00    5.627    68.11
1892.00    5.633    68.48
1893.00    5.639    68.84
1894.00    5.645    69.20
1895.00    5.650    69.56
1896.00    5.655    69.92
1897.00    5.659    70.28
1898.00    5.662    70.64
1899.00    5.665    71.00
1900.00    5.668    71.36
1901.00    5.669    71.72
1902.00    5.671    72.08
1903.00    5.671    72.44
1904.00    5.671    72.79
1905.00    5.671    73.15
1906.00    5.670    73.51
1907.00    5.668    73.87
1908.00    5.666    74.23
1909.00    5.663    74.59
1910.00    5.659    74.95
1911.00    5.655    75.31
1912.00    5.650    75.67
1913.00    5.645    76.03
1914.00    5.639    76.39
1915.00    5.632    76.75
1916.00    5.625    77.12
1917.00    5.616    77.48
1918.00    5.608    77.85
1919.00    5.598    78.21
1920.00    5.588    78.58
1921.00    5.577    78.95
1922.00    5.566    79.32
1923.00    5.554    79.70
1924.00    5.541    80.07
1925.00    5.527    80.45
1926.00    5.513    80.82
1927.00    5.497    81.20
1928.00    5.482    81.59
1929.00    5.465    81.97
1930.00    5.447    82.36
1931.00    5.429    82.75
1932.00    5.410    83.14
1933.00    5.390    83.54
1934.00    5.370    83.93
1935.00    5.348    84.33
1936.00    5.326    84.74
1937.00    5.303    85.15
1938.00    5.279    85.56
1939.00    5.254    85.97
1940.00    5.228    86.39
1941.00    5.201    86.82
1942.00    5.174    87.25
1943.00    5.145    87.68
1944.00    5.116    88.12
1945.00    5.085    88.56
1946.00    5.054    89.01
1947.00    5.022    89.46
1948.00    4.988    89.92
1949.00    4.954    90.39
1950.00    4.919    90.86
1951.00    4.882    91.34
1952.00    4.845    91.83
1953.00    4.806    92.32
1954.00    4.767    92.82
1955.00    4.726    93.34
1956.00    4.685    93.86
1957.00    4.642    94.39
1958.00    4.598    94.93
1959.00    4.553    95.48
1960.00    4.506    96.04
1961.00    4.459    96.61
1962.00    4.410    97.20
1963.00    4.360    97.80
1964.00    4.309    98.41
1965.00    4.257    99.04
1966.00    4.203    99.68
1967.00    4.148   100.34
1968.00    4.091   101.02
1969.00    4.034   101.72
1970.00    3.975   102.44
1971.00    3.914   103.18
1972.00    3.852   103.94
1973.00    3.789   104.73
1974.00    3.724   105.55
1975.00    3.658   106.39
1976.00    3.591   107.27
1977.00    3.522   108.18
1978.00    3.451   109.13
1979.00    3.380   110.12
1980.00    3.306   111.15
1981.00    3.231   112.23
1982.00    3.155   113.36
1983.00    3.078   114.54
1984.00    2.999   115.79
1985.00    2.918   117.11
1986.00    2.837   118.50
1987.00    2.754   119.98
1988.00    2.670   121.54
1989.00    2.585   123.21
1990.00    2.499   125.00
1991.00    2.412   126.91
1992.00    2.325   128.96
1993.00    2.237   131.18
1994.00    2.150   133.57
1995.00    2.062   136.17
1996.00    1.976   139.00
1997.00    1.891   142.08
1998.00    1.808   145.45
1999.00    1.728   149.14
2000.00    1.652   153.18
2001.00    1.580   157.60
2002.00    1.514   162.42
2003.00    1.455   167.65
2004.00    1.405   173.29
2005.00    1.365   179.30
2006.00    1.336   185.63
2007.00    1.318   192.19
2008.00    1.313   198.85
2009.00    1.320   205.51
2010.00    1.339   212.04
2011.00    1.368   218.34
2012.00    1.406   224.33
2013.00    1.453   229.98
2014.00    1.504   235.25
2015.00    1.560   240.16
2016.00    1.619   244.72
2017.00    1.679   248.96
2018.00    1.739   252.91
2019.00    1.798   256.59
2020.00    1.855   260.05
2021.00    1.910   263.30
2022.00    1.963   266.37
2023.00    2.012   269.29
2024.00    2.058   272.07
2025.00    2.101   274.73
2026.00    2.141   277.29
2027.00    2.178   279.76
2028.00    2.211   282.16
2029.00    2.242   284.48
2030.00    2.271   286.74
2031.00    2.297   288.95
2032.00    2.320   291.11
2033.00    2.342   293.23
2034.00    2.362   295.31
2035.00    2.381   297.36
2036.00    2.398   299.38
2037.00    2.414   301.37
2038.00    2.429   303.34
2039.00    2.443   305.28
2040.00    2.456   307.20
2041.00    2.469   309.10
2042.00    2.481   310.98
2043.00    2.493   312.84
2044.00    2.505   314.69
2045.00    2.517   316.51
2046.00    2.529   318.32
2047.00    2.541   320.12
2048.00    2.553   321.89
2049.00    2.565   323.65
2050.00    2.578   325.40
2051.00    2.591   327.12
2052.00    2.604   328.83
2053.00    2.618   330.52
2054.00    2.633   332.19
2055.00    2.647   333.84
2056.00    2.663   335.48
2057.00    2.679   337.09
2058.00    2.695   338.69
2059.00    2.712   340.26
2060.00    2.730   341.82
2061.00    2.748   343.36
2062.00    2.767   344.87
2063.00    2.787   346.37
2064.00    2.807   347.84
2065.00    2.828   349.29
2066.00    2.849   350.72
2067.00    2.871   352.13
2068.00    2.893   353.52
2069.00    2.916   354.88
2070.00    2.940   356.22
2071.00    2.964   357.55
2072.00    2.989   358.85
2073.00    3.014     0.13
2074.00    3.039     1.39
2075.00    3.065     2.62
2076.00    3.092     3.84
2077.00    3.118     5.03
2078.00    3.146     6.21
2079.00    3.173     7.36
2080.00    3.201     8.50
2081.00    3.230     9.61
2082.00    3.258    10.70
2083.00    3.287    11.78
2084.00    3.317    12.84
2085.00    3.346    13.88
2086.00    3.376    14.90
2087.00    3.406    15.90
2088.00    3.436    16.88
2089.00    3.466    17.85
2090.00    3.497    18.80
2091.00    3.528    19.73
2092.00    3.559    20.65
2093.00    3.590    21.55
2094.00    3.621    22.44
2095.00    3.652    23.31
2096.00    3.683    24.17
2097.00    3.714    25.01
2098.00    3.746    25.84
2099.00    3.777    26.65
2100.00    3.809    27.45
2101.00    3.840    28.24
2102.00    3.872    29.02
2103.00    3.903    29.78
2104.00    3.934    30.53
2105.00    3.966    31.27
2106.00    3.997    31.99
2107.00    4.028    32.71
2108.00    4.059    33.41
2109.00    4.091    34.11
2110.00    4.122    34.79
2111.00    4.152    35.47
2112.00    4.183    36.13
2113.00    4.214    36.78
2114.00    4.244    37.43
2115.00    4.275    38.06
2116.00    4.305    38.69
2117.00    4.335    39.31
2118.00    4.365    39.91
2119.00    4.394    40.51
2120.00    4.424    41.11
2121.00    4.453    41.69
2122.00    4.482    42.27
2123.00    4.511    42.84
2124.00    4.540    43.40
2125.00    4.568    43.96
2126.00    4.596    44.51
2127.00    4.624    45.05
2128.00    4.652    45.58
2129.00    4.679    46.11
2130.00    4.707    46.64
2131.00    4.734    47.15
2132.00    4.760    47.66
2133.00    4.787    48.17
2134.00    4.813    48.67
2135.00    4.839    49.17
2136.00    4.864    49.65
2137.00    4.889    50.14
2138.00    4.914    50.62
2139.00    4.939    51.09
2140.00    4.963    51.56
2141.00    4.987    52.03
2142.00    5.011    52.49
2143.00    5.034    52.95
2144.00    5.057    53.40
2145.00    5.080    53.85
2146.00    5.102    54.29
2147.00    5.124    54.73
2148.00    5.145    55.17
2149.00    5.167    55.60
2150.00    5.187    56.03
2151.00    5.208    56.46
2152.00    5.228    56.88
2153.00    5.248    57.30
2154.00    5.267    57.72
2155.00    5.286    58.13
2156.00    5.304    58.55
2157.00    5.323    58.95
2158.00    5.340    59.36
2159.00    5.358    59.76
2160.00    5.375    60.16
2161.00    5.391    60.56
2162.00    5.407    60.95
2163.00    5.423    61.35
2164.00    5.438    61.74
2165.00    5.453    62.13
2166.00    5.467    62.51
2167.00    5.481    62.90
2168.00    5.495    63.28
2169.00    5.508    63.66






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 18:55:33



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