Double Star Calculator - Orbit

Orbital Elements for B811
WDS: B811 WDS ID/Discoverer
P: 300.000 Orbital period (years)
a: 0.772 Semi-major axis (arcseconds)
i: 96.3 Inclination (degrees)
Ω: 85.4 Longitude of ascending node (degrees)
T: 2116.200 Epoch of periastron passage (year)
e: 0.87 Eccentricity
ω: 261.2 Longitude of periastron (degrees)
Start-Year: 1875.0 Year
End-Year: 2175.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for B811
Position: 133533.04-372103.1 Epoch-2000 right ascension and declination
WDS-ID: 13356-3721 WDS designation
Discoverer Code: B811 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 118119 HD catalog number
Hipparcos number: 66325 Hipparcos catalog number
V1: 10.40 Magnitude of the primary
V2: 10.41 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2021 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Tok2022g Reference

Double Star Orbit for B811



WDS 6th Orbit including measures of B811

-- 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 B811
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.149   335.94
--------------------------
1875.00    0.504    73.58
1876.00    0.503    73.43
1877.00    0.502    73.28
1878.00    0.502    73.12
1879.00    0.501    72.97
1880.00    0.500    72.82
1881.00    0.499    72.66
1882.00    0.498    72.50
1883.00    0.497    72.35
1884.00    0.495    72.19
1885.00    0.494    72.03
1886.00    0.493    71.87
1887.00    0.491    71.71
1888.00    0.490    71.55
1889.00    0.489    71.39
1890.00    0.487    71.23
1891.00    0.485    71.07
1892.00    0.484    70.90
1893.00    0.482    70.73
1894.00    0.480    70.57
1895.00    0.478    70.40
1896.00    0.476    70.23
1897.00    0.475    70.06
1898.00    0.473    69.89
1899.00    0.471    69.71
1900.00    0.468    69.54
1901.00    0.466    69.36
1902.00    0.464    69.18
1903.00    0.462    69.00
1904.00    0.460    68.82
1905.00    0.458    68.63
1906.00    0.455    68.45
1907.00    0.453    68.26
1908.00    0.451    68.07
1909.00    0.448    67.88
1910.00    0.446    67.68
1911.00    0.443    67.49
1912.00    0.441    67.29
1913.00    0.438    67.09
1914.00    0.435    66.89
1915.00    0.433    66.68
1916.00    0.430    66.47
1917.00    0.427    66.26
1918.00    0.425    66.05
1919.00    0.422    65.83
1920.00    0.419    65.62
1921.00    0.416    65.39
1922.00    0.414    65.17
1923.00    0.411    64.94
1924.00    0.408    64.71
1925.00    0.405    64.48
1926.00    0.402    64.24
1927.00    0.399    64.00
1928.00    0.396    63.75
1929.00    0.393    63.50
1930.00    0.390    63.25
1931.00    0.387    63.00
1932.00    0.384    62.73
1933.00    0.381    62.47
1934.00    0.378    62.20
1935.00    0.375    61.93
1936.00    0.371    61.65
1937.00    0.368    61.37
1938.00    0.365    61.08
1939.00    0.362    60.79
1940.00    0.359    60.49
1941.00    0.355    60.18
1942.00    0.352    59.87
1943.00    0.349    59.56
1944.00    0.346    59.24
1945.00    0.342    58.91
1946.00    0.339    58.58
1947.00    0.336    58.24
1948.00    0.332    57.89
1949.00    0.329    57.54
1950.00    0.326    57.18
1951.00    0.322    56.81
1952.00    0.319    56.43
1953.00    0.316    56.05
1954.00    0.312    55.65
1955.00    0.309    55.25
1956.00    0.305    54.84
1957.00    0.302    54.42
1958.00    0.299    53.99
1959.00    0.295    53.56
1960.00    0.292    53.11
1961.00    0.288    52.65
1962.00    0.285    52.18
1963.00    0.282    51.69
1964.00    0.278    51.20
1965.00    0.275    50.69
1966.00    0.271    50.17
1967.00    0.268    49.64
1968.00    0.265    49.10
1969.00    0.261    48.54
1970.00    0.258    47.96
1971.00    0.254    47.37
1972.00    0.251    46.77
1973.00    0.248    46.15
1974.00    0.244    45.51
1975.00    0.241    44.85
1976.00    0.238    44.18
1977.00    0.235    43.48
1978.00    0.231    42.77
1979.00    0.228    42.04
1980.00    0.225    41.28
1981.00    0.222    40.51
1982.00    0.219    39.71
1983.00    0.215    38.88
1984.00    0.212    38.04
1985.00    0.209    37.17
1986.00    0.206    36.27
1987.00    0.203    35.35
1988.00    0.200    34.39
1989.00    0.197    33.41
1990.00    0.194    32.41
1991.00    0.192    31.37
1992.00    0.189    30.30
1993.00    0.186    29.20
1994.00    0.183    28.06
1995.00    0.181    26.90
1996.00    0.178    25.70
1997.00    0.176    24.46
1998.00    0.173    23.19
1999.00    0.171    21.89
2000.00    0.169    20.55
2001.00    0.167    19.18
2002.00    0.165    17.77
2003.00    0.163    16.32
2004.00    0.161    14.84
2005.00    0.159    13.33
2006.00    0.157    11.78
2007.00    0.156    10.20
2008.00    0.154     8.59
2009.00    0.153     6.95
2010.00    0.152     5.28
2011.00    0.150     3.58
2012.00    0.149     1.86
2013.00    0.149     0.12
2014.00    0.148   358.36
2015.00    0.147   356.58
2016.00    0.147   354.78
2017.00    0.146   352.98
2018.00    0.146   351.17
2019.00    0.146   349.36
2020.00    0.146   347.54
2021.00    0.146   345.73
2022.00    0.146   343.92
2023.00    0.147   342.12
2024.00    0.147   340.34
2025.00    0.148   338.57
2026.00    0.149   336.81
2027.00    0.150   335.08
2028.00    0.151   333.37
2029.00    0.152   331.69
2030.00    0.153   330.03
2031.00    0.155   328.40
2032.00    0.156   326.80
2033.00    0.158   325.24
2034.00    0.160   323.70
2035.00    0.162   322.20
2036.00    0.163   320.74
2037.00    0.165   319.30
2038.00    0.167   317.91
2039.00    0.170   316.55
2040.00    0.172   315.22
2041.00    0.174   313.93
2042.00    0.176   312.67
2043.00    0.179   311.44
2044.00    0.181   310.25
2045.00    0.184   309.09
2046.00    0.187   307.96
2047.00    0.189   306.86
2048.00    0.192   305.80
2049.00    0.195   304.76
2050.00    0.197   303.75
2051.00    0.200   302.77
2052.00    0.203   301.82
2053.00    0.206   300.89
2054.00    0.208   299.99
2055.00    0.211   299.11
2056.00    0.214   298.25
2057.00    0.217   297.42
2058.00    0.220   296.61
2059.00    0.223   295.82
2060.00    0.226   295.05
2061.00    0.229   294.30
2062.00    0.232   293.57
2063.00    0.235   292.86
2064.00    0.237   292.17
2065.00    0.240   291.49
2066.00    0.243   290.83
2067.00    0.246   290.18
2068.00    0.249   289.55
2069.00    0.252   288.93
2070.00    0.254   288.33
2071.00    0.257   287.73
2072.00    0.260   287.15
2073.00    0.262   286.59
2074.00    0.265   286.03
2075.00    0.267   285.48
2076.00    0.270   284.95
2077.00    0.272   284.42
2078.00    0.275   283.90
2079.00    0.277   283.39
2080.00    0.279   282.89
2081.00    0.281   282.40
2082.00    0.283   281.91
2083.00    0.285   281.44
2084.00    0.287   280.96
2085.00    0.289   280.50
2086.00    0.290   280.03
2087.00    0.292   279.58
2088.00    0.293   279.12
2089.00    0.294   278.67
2090.00    0.295   278.23
2091.00    0.296   277.78
2092.00    0.296   277.34
2093.00    0.297   276.90
2094.00    0.297   276.46
2095.00    0.297   276.02
2096.00    0.296   275.58
2097.00    0.295   275.14
2098.00    0.294   274.70
2099.00    0.293   274.25
2100.00    0.291   273.79
2101.00    0.288   273.33
2102.00    0.285   272.86
2103.00    0.281   272.38
2104.00    0.277   271.88
2105.00    0.271   271.36
2106.00    0.265   270.83
2107.00    0.257   270.26
2108.00    0.248   269.65
2109.00    0.237   269.00
2110.00    0.224   268.27
2111.00    0.207   267.44
2112.00    0.187   266.44
2113.00    0.161   265.17
2114.00    0.127   263.30
2115.00    0.083   259.72
2116.00    0.029   244.19
2117.00    0.035   103.82
2118.00    0.089    91.57
2119.00    0.136    88.41
2120.00    0.174    86.78
2121.00    0.206    85.70
2122.00    0.234    84.90
2123.00    0.258    84.26
2124.00    0.279    83.73
2125.00    0.298    83.26
2126.00    0.315    82.85
2127.00    0.330    82.48
2128.00    0.344    82.14
2129.00    0.356    81.82
2130.00    0.368    81.52
2131.00    0.379    81.25
2132.00    0.388    80.98
2133.00    0.398    80.73
2134.00    0.406    80.49
2135.00    0.414    80.26
2136.00    0.421    80.04
2137.00    0.428    79.83
2138.00    0.434    79.62
2139.00    0.440    79.42
2140.00    0.446    79.22
2141.00    0.451    79.03
2142.00    0.456    78.84
2143.00    0.460    78.65
2144.00    0.465    78.47
2145.00    0.468    78.30
2146.00    0.472    78.12
2147.00    0.476    77.95
2148.00    0.479    77.78
2149.00    0.482    77.61
2150.00    0.484    77.45
2151.00    0.487    77.28
2152.00    0.489    77.12
2153.00    0.491    76.96
2154.00    0.493    76.80
2155.00    0.495    76.64
2156.00    0.497    76.48
2157.00    0.498    76.33
2158.00    0.500    76.17
2159.00    0.501    76.02
2160.00    0.502    75.86
2161.00    0.503    75.71
2162.00    0.503    75.56
2163.00    0.504    75.40
2164.00    0.505    75.25
2165.00    0.505    75.10
2166.00    0.505    74.95
2167.00    0.506    74.80
2168.00    0.506    74.64
2169.00    0.506    74.49
2170.00    0.506    74.34
2171.00    0.505    74.19
2172.00    0.505    74.04
2173.00    0.505    73.89
2174.00    0.504    73.74






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 16:58:11



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