Double Star Calculator - Orbit

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: 1908.98 Year
End-Year: 2141.02 Year
Epoch: 2026.5 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
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Hrt2008 Reference

Double Star Orbit for BU867



WDS 6th Orbit including measures of BU867

-- 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 BU867
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.519   347.50
--------------------------
1908.98    0.959   171.79
1909.98    0.953   171.62
1910.98    0.947   171.45
1911.98    0.941   171.28
1912.98    0.934   171.10
1913.98    0.927   170.92
1914.98    0.919   170.74
1915.98    0.911   170.56
1916.98    0.903   170.37
1917.98    0.894   170.18
1918.98    0.885   169.98
1919.98    0.876   169.79
1920.98    0.866   169.58
1921.98    0.856   169.37
1922.98    0.845   169.16
1923.98    0.834   168.94
1924.98    0.823   168.72
1925.98    0.811   168.48
1926.98    0.799   168.25
1927.98    0.787   168.00
1928.98    0.775   167.75
1929.98    0.762   167.49
1930.98    0.748   167.22
1931.98    0.735   166.93
1932.98    0.721   166.64
1933.98    0.707   166.34
1934.98    0.692   166.02
1935.98    0.677   165.69
1936.98    0.662   165.35
1937.98    0.646   164.99
1938.98    0.631   164.61
1939.98    0.615   164.21
1940.98    0.598   163.79
1941.98    0.582   163.35
1942.98    0.565   162.88
1943.98    0.547   162.38
1944.98    0.530   161.85
1945.98    0.512   161.28
1946.98    0.495   160.67
1947.98    0.476   160.01
1948.98    0.458   159.31
1949.98    0.440   158.54
1950.98    0.421   157.71
1951.98    0.402   156.79
1952.98    0.383   155.79
1953.98    0.364   154.69
1954.98    0.345   153.46
1955.98    0.326   152.08
1956.98    0.307   150.54
1957.98    0.288   148.79
1958.98    0.269   146.79
1959.98    0.250   144.49
1960.98    0.231   141.82
1961.98    0.213   138.69
1962.98    0.196   134.98
1963.98    0.179   130.57
1964.98    0.164   125.30
1965.98    0.150   118.97
1966.98    0.138   111.46
1967.98    0.128   102.70
1968.98    0.123    92.84
1969.98    0.120    82.33
1970.98    0.122    71.79
1971.98    0.128    61.90
1972.98    0.137    53.08
1973.98    0.149    45.51
1974.98    0.163    39.13
1975.98    0.178    33.80
1976.98    0.195    29.35
1977.98    0.212    25.61
1978.98    0.230    22.44
1979.98    0.248    19.73
1980.98    0.267    17.40
1981.98    0.285    15.37
1982.98    0.304    13.58
1983.98    0.322    12.01
1984.98    0.341    10.60
1985.98    0.359     9.34
1986.98    0.377     8.19
1987.98    0.394     7.15
1988.98    0.411     6.20
1989.98    0.428     5.33
1990.98    0.445     4.51
1991.98    0.461     3.76
1992.98    0.476     3.06
1993.98    0.491     2.40
1994.98    0.505     1.77
1995.98    0.519     1.18
1996.98    0.531     0.62
1997.98    0.544     0.09
1998.98    0.555   359.58
1999.98    0.566   359.09
2000.98    0.576   358.61
2001.98    0.585   358.15
2002.98    0.593   357.71
2003.98    0.600   357.28
2004.98    0.607   356.85
2005.98    0.612   356.44
2006.98    0.617   356.03
2007.98    0.621   355.63
2008.98    0.624   355.23
2009.98    0.625   354.83
2010.98    0.626   354.44
2011.98    0.626   354.04
2012.98    0.625   353.65
2013.98    0.623   353.25
2014.98    0.620   352.85
2015.98    0.616   352.45
2016.98    0.611   352.04
2017.98    0.605   351.62
2018.98    0.598   351.19
2019.98    0.590   350.75
2020.98    0.581   350.30
2021.98    0.572   349.84
2022.98    0.562   349.36
2023.98    0.550   348.86
2024.98    0.538   348.34
2025.98    0.526   347.79
2026.98    0.512   347.22
2027.98    0.498   346.62
2028.98    0.483   345.97
2029.98    0.468   345.29
2030.98    0.452   344.56
2031.98    0.436   343.78
2032.98    0.419   342.93
2033.98    0.401   342.01
2034.98    0.383   341.01
2035.98    0.365   339.91
2036.98    0.347   338.69
2037.98    0.328   337.33
2038.98    0.309   335.81
2039.98    0.290   334.09
2040.98    0.271   332.13
2041.98    0.252   329.87
2042.98    0.233   327.24
2043.98    0.215   324.15
2044.98    0.197   320.49
2045.98    0.179   316.12
2046.98    0.163   310.84
2047.98    0.149   304.47
2048.98    0.136   296.81
2049.98    0.126   287.79
2050.98    0.120   277.54
2051.98    0.118   266.54
2052.98    0.120   255.52
2053.98    0.126   245.22
2054.98    0.136   236.13
2055.98    0.148   228.41
2056.98    0.163   221.98
2057.98    0.179   216.67
2058.98    0.196   212.26
2059.98    0.214   208.58
2060.98    0.233   205.48
2061.98    0.252   202.85
2062.98    0.271   200.59
2063.98    0.291   198.64
2064.98    0.311   196.93
2065.98    0.330   195.42
2066.98    0.350   194.09
2067.98    0.369   192.89
2068.98    0.389   191.82
2069.98    0.408   190.84
2070.98    0.427   189.96
2071.98    0.446   189.15
2072.98    0.465   188.41
2073.98    0.484   187.72
2074.98    0.502   187.09
2075.98    0.520   186.50
2076.98    0.538   185.94
2077.98    0.556   185.43
2078.98    0.573   184.94
2079.98    0.590   184.49
2080.98    0.607   184.06
2081.98    0.624   183.65
2082.98    0.640   183.26
2083.98    0.656   182.90
2084.98    0.671   182.54
2085.98    0.687   182.21
2086.98    0.701   181.89
2087.98    0.716   181.58
2088.98    0.730   181.29
2089.98    0.744   181.00
2090.98    0.758   180.73
2091.98    0.771   180.46
2092.98    0.784   180.21
2093.98    0.796   179.96
2094.98    0.809   179.72
2095.98    0.820   179.49
2096.98    0.832   179.26
2097.98    0.843   179.04
2098.98    0.854   178.83
2099.98    0.864   178.62
2100.98    0.874   178.41
2101.98    0.884   178.21
2102.98    0.893   178.02
2103.98    0.902   177.83
2104.98    0.910   177.64
2105.98    0.918   177.45
2106.98    0.926   177.27
2107.98    0.933   177.09
2108.98    0.940   176.92
2109.98    0.947   176.74
2110.98    0.953   176.57
2111.98    0.959   176.40
2112.98    0.964   176.24
2113.98    0.969   176.07
2114.98    0.974   175.91
2115.98    0.978   175.75
2116.98    0.982   175.59
2117.98    0.986   175.43
2118.98    0.989   175.27
2119.98    0.991   175.11
2120.98    0.994   174.95
2121.98    0.996   174.80
2122.98    0.997   174.64
2123.98    0.998   174.49
2124.98    0.999   174.33
2125.98    1.000   174.18
2126.98    1.000   174.02
2127.98    0.999   173.87
2128.98    0.999   173.71
2129.98    0.997   173.56
2130.98    0.996   173.40
2131.98    0.994   173.25
2132.98    0.992   173.09
2133.98    0.989   172.93
2134.98    0.986   172.77
2135.98    0.982   172.62
2136.98    0.979   172.45
2137.98    0.974   172.29
2138.98    0.970   172.13
2139.98    0.965   171.96
2140.98    0.959   171.80






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 14:46:13



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