Double Star Calculator - Orbit

Orbital Elements for BU1114AB
WDS: BU1114AB WDS ID/Discoverer
P: 205.000 Orbital period (years)
a: 0.7219 Semi-major axis (arcseconds)
i: 90.6 Inclination (degrees)
Ω: 138.3 Longitude of ascending node (degrees)
T: 2047.160 Epoch of periastron passage (year)
e: 0.498 Eccentricity
ω: 359.5 Longitude of periastron (degrees)
Start-Year: 1922.5 Year
End-Year: 2127.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU1114AB
Position: 152858.69-285200.5 Epoch-2000 right ascension and declination
WDS-ID: 15290-2852 WDS designation
Discoverer Code: BU1114AB Discover designation and components
ADS number: 9659 Aitken Double Star catalog
HD number: 137798 HD catalog number
Hipparcos number: 75790 Hipparcos catalog number
V1: 6.98 Magnitude of the primary
V2: 7.76 Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Tok2016e Reference

Double Star Orbit for BU1114AB



WDS 6th Orbit including measures of BU1114AB

-- 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 BU1114AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.019   300.36
--------------------------
1922.50    1.004   318.47
1923.50    1.011   318.46
1924.50    1.017   318.45
1925.50    1.024   318.45
1926.50    1.029   318.44
1927.50    1.035   318.43
1928.50    1.040   318.42
1929.50    1.045   318.42
1930.50    1.049   318.41
1931.50    1.054   318.40
1932.50    1.058   318.39
1933.50    1.061   318.39
1934.50    1.065   318.38
1935.50    1.068   318.37
1936.50    1.070   318.36
1937.50    1.073   318.36
1938.50    1.075   318.35
1939.50    1.077   318.34
1940.50    1.078   318.33
1941.50    1.080   318.33
1942.50    1.080   318.32
1943.50    1.081   318.31
1944.50    1.081   318.31
1945.50    1.081   318.30
1946.50    1.081   318.29
1947.50    1.080   318.29
1948.50    1.080   318.28
1949.50    1.078   318.27
1950.50    1.077   318.26
1951.50    1.075   318.26
1952.50    1.073   318.25
1953.50    1.071   318.24
1954.50    1.068   318.23
1955.50    1.065   318.23
1956.50    1.061   318.22
1957.50    1.058   318.21
1958.50    1.054   318.21
1959.50    1.050   318.20
1960.50    1.045   318.19
1961.50    1.040   318.18
1962.50    1.035   318.17
1963.50    1.030   318.17
1964.50    1.024   318.16
1965.50    1.018   318.15
1966.50    1.011   318.14
1967.50    1.005   318.13
1968.50    0.998   318.13
1969.50    0.990   318.12
1970.50    0.983   318.11
1971.50    0.975   318.10
1972.50    0.966   318.09
1973.50    0.958   318.08
1974.50    0.949   318.07
1975.50    0.939   318.06
1976.50    0.930   318.06
1977.50    0.920   318.05
1978.50    0.910   318.04
1979.50    0.899   318.03
1980.50    0.888   318.01
1981.50    0.877   318.00
1982.50    0.865   317.99
1983.50    0.853   317.98
1984.50    0.841   317.97
1985.50    0.829   317.96
1986.50    0.816   317.95
1987.50    0.803   317.93
1988.50    0.789   317.92
1989.50    0.775   317.91
1990.50    0.761   317.89
1991.50    0.746   317.88
1992.50    0.731   317.86
1993.50    0.716   317.85
1994.50    0.700   317.83
1995.50    0.684   317.81
1996.50    0.668   317.79
1997.50    0.651   317.78
1998.50    0.634   317.76
1999.50    0.617   317.73
2000.50    0.599   317.71
2001.50    0.581   317.69
2002.50    0.562   317.66
2003.50    0.543   317.64
2004.50    0.524   317.61
2005.50    0.505   317.57
2006.50    0.485   317.54
2007.50    0.464   317.50
2008.50    0.444   317.46
2009.50    0.423   317.42
2010.50    0.401   317.37
2011.50    0.379   317.32
2012.50    0.357   317.25
2013.50    0.335   317.18
2014.50    0.312   317.11
2015.50    0.289   317.01
2016.50    0.266   316.91
2017.50    0.242   316.78
2018.50    0.218   316.62
2019.50    0.194   316.42
2020.50    0.169   316.17
2021.50    0.145   315.83
2022.50    0.120   315.35
2023.50    0.094   314.61
2024.50    0.069   313.34
2025.50    0.044   310.59
2026.50    0.019   300.36
2027.50    0.010   173.83
2028.50    0.034   147.59
2029.50    0.059   143.45
2030.50    0.085   141.79
2031.50    0.110   140.89
2032.50    0.134   140.33
2033.50    0.159   139.94
2034.50    0.182   139.65
2035.50    0.205   139.43
2036.50    0.228   139.26
2037.50    0.249   139.11
2038.50    0.269   138.98
2039.50    0.287   138.88
2040.50    0.304   138.78
2041.50    0.319   138.70
2042.50    0.333   138.62
2043.50    0.344   138.55
2044.50    0.352   138.48
2045.50    0.358   138.41
2046.50    0.362   138.35
2047.50    0.362   138.28
2048.50    0.360   138.22
2049.50    0.356   138.16
2050.50    0.349   138.09
2051.50    0.339   138.02
2052.50    0.327   137.94
2053.50    0.313   137.86
2054.50    0.298   137.77
2055.50    0.280   137.67
2056.50    0.261   137.56
2057.50    0.241   137.43
2058.50    0.219   137.27
2059.50    0.197   137.08
2060.50    0.174   136.84
2061.50    0.150   136.52
2062.50    0.126   136.08
2063.50    0.101   135.42
2064.50    0.076   134.34
2065.50    0.051   132.20
2066.50    0.026   125.91
2067.50    0.006    47.90
2068.50    0.026   331.22
2069.50    0.051   324.99
2070.50    0.076   322.85
2071.50    0.101   321.78
2072.50    0.126   321.13
2073.50    0.151   320.69
2074.50    0.175   320.38
2075.50    0.200   320.14
2076.50    0.224   319.96
2077.50    0.247   319.81
2078.50    0.271   319.68
2079.50    0.294   319.58
2080.50    0.317   319.49
2081.50    0.339   319.41
2082.50    0.362   319.34
2083.50    0.383   319.28
2084.50    0.405   319.23
2085.50    0.426   319.18
2086.50    0.447   319.14
2087.50    0.467   319.10
2088.50    0.487   319.06
2089.50    0.507   319.03
2090.50    0.527   319.00
2091.50    0.546   318.97
2092.50    0.564   318.94
2093.50    0.583   318.92
2094.50    0.601   318.89
2095.50    0.618   318.87
2096.50    0.636   318.85
2097.50    0.653   318.83
2098.50    0.669   318.81
2099.50    0.685   318.79
2100.50    0.701   318.78
2101.50    0.717   318.76
2102.50    0.732   318.74
2103.50    0.747   318.73
2104.50    0.762   318.71
2105.50    0.776   318.70
2106.50    0.790   318.69
2107.50    0.803   318.67
2108.50    0.816   318.66
2109.50    0.829   318.65
2110.50    0.842   318.64
2111.50    0.854   318.62
2112.50    0.866   318.61
2113.50    0.877   318.60
2114.50    0.888   318.59
2115.50    0.899   318.58
2116.50    0.910   318.57
2117.50    0.920   318.56
2118.50    0.930   318.55
2119.50    0.939   318.54
2120.50    0.949   318.53
2121.50    0.957   318.52
2122.50    0.966   318.51
2123.50    0.974   318.50
2124.50    0.982   318.50
2125.50    0.990   318.49
2126.50    0.997   318.48






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 17:16:01



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