Double Star Calculator - Orbit

Orbital Elements for BU932AB
WDS: BU932AB WDS ID/Discoverer
P: 177.700 Orbital period (years)
a: 0.531 Semi-major axis (arcseconds)
i: 70.4 Inclination (degrees)
Ω: 117.7 Longitude of ascending node (degrees)
T: 1921.870 Epoch of periastron passage (year)
e: 0.925 Eccentricity
ω: 103.6 Longitude of periastron (degrees)
Start-Year: 1936.15 Year
End-Year: 2113.85 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU932AB
Position: 133440.48-131251.5 Epoch-2000 right ascension and declination
WDS-ID: 13347-1313 WDS designation
Discoverer Code: BU932AB Discover designation and components
ADS number: 8954 Aitken Double Star catalog
HD number: 118054 HD catalog number
Hipparcos number: 66247 Hipparcos catalog number
V1: 6.30 Magnitude of the primary
V2: 7.29 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2009 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Sca2014b Reference

Double Star Orbit for BU932AB



WDS 6th Orbit including measures of BU932AB

-- 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 BU932AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.434    69.91
--------------------------
1936.15    0.179   354.71
1937.15    0.182   356.95
1938.15    0.186   359.09
1939.15    0.190     1.15
1940.15    0.194     3.13
1941.15    0.197     5.03
1942.15    0.201     6.87
1943.15    0.205     8.64
1944.15    0.208    10.34
1945.15    0.212    11.99
1946.15    0.216    13.58
1947.15    0.220    15.11
1948.15    0.223    16.60
1949.15    0.227    18.04
1950.15    0.231    19.43
1951.15    0.234    20.78
1952.15    0.238    22.08
1953.15    0.241    23.35
1954.15    0.245    24.58
1955.15    0.249    25.78
1956.15    0.252    26.94
1957.15    0.256    28.06
1958.15    0.260    29.16
1959.15    0.263    30.23
1960.15    0.267    31.26
1961.15    0.270    32.27
1962.15    0.274    33.26
1963.15    0.277    34.22
1964.15    0.281    35.15
1965.15    0.284    36.06
1966.15    0.288    36.95
1967.15    0.291    37.82
1968.15    0.295    38.67
1969.15    0.298    39.50
1970.15    0.301    40.31
1971.15    0.305    41.10
1972.15    0.308    41.88
1973.15    0.311    42.64
1974.15    0.315    43.38
1975.15    0.318    44.11
1976.15    0.321    44.82
1977.15    0.324    45.52
1978.15    0.328    46.20
1979.15    0.331    46.88
1980.15    0.334    47.54
1981.15    0.337    48.18
1982.15    0.340    48.82
1983.15    0.343    49.44
1984.15    0.346    50.06
1985.15    0.349    50.66
1986.15    0.352    51.26
1987.15    0.355    51.84
1988.15    0.357    52.41
1989.15    0.360    52.98
1990.15    0.363    53.54
1991.15    0.366    54.08
1992.15    0.368    54.62
1993.15    0.371    55.16
1994.15    0.374    55.68
1995.15    0.376    56.20
1996.15    0.379    56.71
1997.15    0.381    57.21
1998.15    0.384    57.71
1999.15    0.386    58.20
2000.15    0.389    58.69
2001.15    0.391    59.17
2002.15    0.393    59.64
2003.15    0.395    60.11
2004.15    0.398    60.57
2005.15    0.400    61.03
2006.15    0.402    61.48
2007.15    0.404    61.93
2008.15    0.406    62.38
2009.15    0.408    62.82
2010.15    0.410    63.25
2011.15    0.412    63.68
2012.15    0.414    64.11
2013.15    0.415    64.54
2014.15    0.417    64.96
2015.15    0.419    65.37
2016.15    0.420    65.79
2017.15    0.422    66.20
2018.15    0.423    66.60
2019.15    0.425    67.01
2020.15    0.426    67.41
2021.15    0.428    67.81
2022.15    0.429    68.21
2023.15    0.430    68.60
2024.15    0.431    68.99
2025.15    0.432    69.39
2026.15    0.434    69.77
2027.15    0.435    70.16
2028.15    0.435    70.54
2029.15    0.436    70.93
2030.15    0.437    71.31
2031.15    0.438    71.69
2032.15    0.439    72.07
2033.15    0.439    72.45
2034.15    0.440    72.82
2035.15    0.440    73.20
2036.15    0.441    73.58
2037.15    0.441    73.95
2038.15    0.441    74.32
2039.15    0.441    74.70
2040.15    0.442    75.07
2041.15    0.442    75.45
2042.15    0.441    75.82
2043.15    0.441    76.19
2044.15    0.441    76.57
2045.15    0.441    76.94
2046.15    0.440    77.32
2047.15    0.440    77.69
2048.15    0.439    78.07
2049.15    0.439    78.45
2050.15    0.438    78.82
2051.15    0.437    79.20
2052.15    0.436    79.59
2053.15    0.435    79.97
2054.15    0.434    80.36
2055.15    0.433    80.74
2056.15    0.431    81.13
2057.15    0.430    81.53
2058.15    0.428    81.92
2059.15    0.426    82.32
2060.15    0.425    82.72
2061.15    0.423    83.13
2062.15    0.420    83.54
2063.15    0.418    83.95
2064.15    0.416    84.37
2065.15    0.413    84.79
2066.15    0.410    85.22
2067.15    0.408    85.66
2068.15    0.404    86.10
2069.15    0.401    86.55
2070.15    0.398    87.00
2071.15    0.394    87.47
2072.15    0.390    87.94
2073.15    0.386    88.42
2074.15    0.382    88.92
2075.15    0.377    89.42
2076.15    0.373    89.94
2077.15    0.368    90.47
2078.15    0.362    91.02
2079.15    0.357    91.58
2080.15    0.351    92.16
2081.15    0.344    92.77
2082.15    0.338    93.39
2083.15    0.331    94.04
2084.15    0.323    94.73
2085.15    0.315    95.44
2086.15    0.306    96.20
2087.15    0.297    97.00
2088.15    0.287    97.85
2089.15    0.276    98.77
2090.15    0.265    99.77
2091.15    0.252   100.86
2092.15    0.238   102.07
2093.15    0.222   103.45
2094.15    0.205   105.05
2095.15    0.184   106.98
2096.15    0.160   109.43
2097.15    0.131   112.86
2098.15    0.092   118.78
2099.15    0.032   141.89
2100.15    0.053   293.36
2101.15    0.089   307.72
2102.15    0.108   315.18
2103.15    0.120   320.76
2104.15    0.130   325.41
2105.15    0.137   329.49
2106.15    0.144   333.18
2107.15    0.149   336.57
2108.15    0.154   339.73
2109.15    0.159   342.70
2110.15    0.163   345.50
2111.15    0.168   348.15
2112.15    0.172   350.68
2113.15    0.176   353.09






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 16:57:52



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