Double Star Calculator - Orbit

Orbital Elements for BU953AB
WDS: BU953AB WDS ID/Discoverer
P: 220.780 Orbital period (years)
a: 0.415 Semi-major axis (arcseconds)
i: 113.1 Inclination (degrees)
Ω: 144.2 Longitude of ascending node (degrees)
T: 1899.730 Epoch of periastron passage (year)
e: 0.444 Eccentricity
ω: 264.1 Longitude of periastron (degrees)
Start-Year: 1914.61 Year
End-Year: 2135.39 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU953AB
Position: 163639.05+694734.7 Epoch-2000 right ascension and declination
WDS-ID: 16366+6948 WDS designation
Discoverer Code: BU953AB Discover designation and components
ADS number: 10140 Aitken Double Star catalog
HD number: 150631 HD catalog number
Hipparcos number: 81332 Hipparcos catalog number
V1: 8.56 Magnitude of the primary
V2: 9.27 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2004 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: Hrt2008 Reference

Double Star Orbit for BU953AB



WDS 6th Orbit including measures of BU953AB

-- 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 BU953AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.238    39.92
--------------------------
1914.61    0.237   158.95
1915.61    0.248   157.27
1916.61    0.259   155.73
1917.61    0.270   154.32
1918.61    0.280   153.02
1919.61    0.290   151.80
1920.61    0.299   150.66
1921.61    0.307   149.58
1922.61    0.316   148.57
1923.61    0.323   147.60
1924.61    0.331   146.67
1925.61    0.337   145.79
1926.61    0.344   144.94
1927.61    0.350   144.12
1928.61    0.355   143.32
1929.61    0.360   142.55
1930.61    0.365   141.80
1931.61    0.370   141.07
1932.61    0.374   140.36
1933.61    0.378   139.66
1934.61    0.381   138.97
1935.61    0.384   138.30
1936.61    0.387   137.63
1937.61    0.389   136.98
1938.61    0.392   136.33
1939.61    0.393   135.69
1940.61    0.395   135.05
1941.61    0.397   134.42
1942.61    0.398   133.80
1943.61    0.399   133.18
1944.61    0.399   132.56
1945.61    0.400   131.94
1946.61    0.400   131.32
1947.61    0.400   130.70
1948.61    0.400   130.09
1949.61    0.400   129.47
1950.61    0.399   128.85
1951.61    0.398   128.23
1952.61    0.397   127.61
1953.61    0.396   126.98
1954.61    0.395   126.35
1955.61    0.394   125.72
1956.61    0.392   125.08
1957.61    0.391   124.43
1958.61    0.389   123.78
1959.61    0.387   123.13
1960.61    0.385   122.47
1961.61    0.383   121.80
1962.61    0.381   121.12
1963.61    0.378   120.44
1964.61    0.376   119.74
1965.61    0.374   119.04
1966.61    0.371   118.33
1967.61    0.368   117.60
1968.61    0.365   116.87
1969.61    0.363   116.12
1970.61    0.360   115.37
1971.61    0.357   114.60
1972.61    0.354   113.81
1973.61    0.350   113.02
1974.61    0.347   112.21
1975.61    0.344   111.38
1976.61    0.341   110.54
1977.61    0.337   109.68
1978.61    0.334   108.80
1979.61    0.331   107.91
1980.61    0.327   107.00
1981.61    0.324   106.07
1982.61    0.321   105.12
1983.61    0.317   104.15
1984.61    0.314   103.15
1985.61    0.310   102.14
1986.61    0.307   101.10
1987.61    0.303   100.04
1988.61    0.300    98.96
1989.61    0.297    97.85
1990.61    0.293    96.71
1991.61    0.290    95.55
1992.61    0.287    94.36
1993.61    0.283    93.15
1994.61    0.280    91.91
1995.61    0.277    90.64
1996.61    0.274    89.34
1997.61    0.271    88.01
1998.61    0.268    86.65
1999.61    0.265    85.26
2000.61    0.263    83.85
2001.61    0.260    82.40
2002.61    0.257    80.92
2003.61    0.255    79.42
2004.61    0.253    77.89
2005.61    0.250    76.32
2006.61    0.248    74.74
2007.61    0.246    73.12
2008.61    0.244    71.48
2009.61    0.243    69.81
2010.61    0.241    68.13
2011.61    0.240    66.42
2012.61    0.238    64.69
2013.61    0.237    62.94
2014.61    0.236    61.18
2015.61    0.236    59.41
2016.61    0.235    57.62
2017.61    0.234    55.83
2018.61    0.234    54.03
2019.61    0.234    52.23
2020.61    0.234    50.43
2021.61    0.234    48.62
2022.61    0.235    46.83
2023.61    0.235    45.04
2024.61    0.236    43.25
2025.61    0.237    41.48
2026.61    0.238    39.73
2027.61    0.239    37.99
2028.61    0.240    36.27
2029.61    0.242    34.57
2030.61    0.243    32.89
2031.61    0.245    31.23
2032.61    0.247    29.59
2033.61    0.249    27.99
2034.61    0.251    26.41
2035.61    0.253    24.85
2036.61    0.255    23.32
2037.61    0.258    21.83
2038.61    0.260    20.36
2039.61    0.263    18.91
2040.61    0.266    17.50
2041.61    0.268    16.12
2042.61    0.271    14.76
2043.61    0.274    13.43
2044.61    0.277    12.14
2045.61    0.280    10.86
2046.61    0.283     9.62
2047.61    0.286     8.40
2048.61    0.289     7.21
2049.61    0.292     6.04
2050.61    0.296     4.90
2051.61    0.299     3.78
2052.61    0.302     2.69
2053.61    0.305     1.61
2054.61    0.308     0.56
2055.61    0.311   359.53
2056.61    0.314   358.52
2057.61    0.317   357.53
2058.61    0.320   356.56
2059.61    0.323   355.61
2060.61    0.326   354.67
2061.61    0.329   353.75
2062.61    0.332   352.84
2063.61    0.334   351.95
2064.61    0.337   351.08
2065.61    0.339   350.21
2066.61    0.342   349.36
2067.61    0.344   348.52
2068.61    0.346   347.69
2069.61    0.348   346.88
2070.61    0.350   346.07
2071.61    0.352   345.27
2072.61    0.354   344.48
2073.61    0.356   343.69
2074.61    0.357   342.92
2075.61    0.358   342.14
2076.61    0.359   341.38
2077.61    0.360   340.61
2078.61    0.361   339.85
2079.61    0.361   339.10
2080.61    0.362   338.34
2081.61    0.362   337.58
2082.61    0.361   336.83
2083.61    0.361   336.07
2084.61    0.360   335.31
2085.61    0.359   334.55
2086.61    0.358   333.78
2087.61    0.356   333.01
2088.61    0.354   332.23
2089.61    0.352   331.43
2090.61    0.350   330.63
2091.61    0.347   329.82
2092.61    0.343   328.99
2093.61    0.340   328.14
2094.61    0.336   327.28
2095.61    0.331   326.39
2096.61    0.326   325.47
2097.61    0.321   324.53
2098.61    0.315   323.55
2099.61    0.308   322.53
2100.61    0.301   321.47
2101.61    0.294   320.36
2102.61    0.286   319.18
2103.61    0.278   317.94
2104.61    0.269   316.62
2105.61    0.259   315.20
2106.61    0.249   313.67
2107.61    0.238   312.00
2108.61    0.227   310.18
2109.61    0.215   308.16
2110.61    0.203   305.91
2111.61    0.191   303.37
2112.61    0.178   300.47
2113.61    0.165   297.12
2114.61    0.152   293.20
2115.61    0.140   288.56
2116.61    0.127   283.00
2117.61    0.116   276.31
2118.61    0.106   268.26
2119.61    0.098   258.73
2120.61    0.093   247.81
2121.61    0.091   236.00
2122.61    0.092   224.11
2123.61    0.097   213.00
2124.61    0.105   203.22
2125.61    0.114   194.93
2126.61    0.126   188.04
2127.61    0.138   182.33
2128.61    0.151   177.57
2129.61    0.164   173.56
2130.61    0.177   170.15
2131.61    0.190   167.21
2132.61    0.203   164.65
2133.61    0.215   162.39
2134.61    0.228   160.37






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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 17:29:26



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