Double Star Calculator - Orbit

Orbital Elements for HO366AB
WDS: HO366AB WDS ID/Discoverer
P: 287.200 Orbital period (years)
a: 0.4 Semi-major axis (arcseconds)
i: 45.5 Inclination (degrees)
Ω: 24.4 Longitude of ascending node (degrees)
T: 2004.444 Epoch of periastron passage (year)
e: 0.607 Eccentricity
ω: 146.3 Longitude of periastron (degrees)
Start-Year: 1881.4 Year
End-Year: 2168.6 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HO366AB
Position: 092754.30+312754.1 Epoch-2000 right ascension and declination
WDS-ID: 09279+3128 WDS designation
Discoverer Code: HO366AB Discover designation and components
ADS number: 7384 Aitken Double Star catalog
HD number: 81656 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.4 Magnitude of the primary
V2: 9.8 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2023 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Sca2024b Reference

Double Star Orbit for HO366AB



WDS 6th Orbit including measures of HO366AB

-- 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 HO366AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.208   256.42
--------------------------
1881.40    0.602     5.77
1882.40    0.602     6.07
1883.40    0.602     6.38
1884.40    0.602     6.69
1885.40    0.602     7.00
1886.40    0.602     7.31
1887.40    0.601     7.62
1888.40    0.601     7.92
1889.40    0.601     8.23
1890.40    0.600     8.54
1891.40    0.600     8.85
1892.40    0.599     9.17
1893.40    0.599     9.48
1894.40    0.598     9.79
1895.40    0.597    10.10
1896.40    0.596    10.42
1897.40    0.595    10.73
1898.40    0.595    11.05
1899.40    0.594    11.36
1900.40    0.592    11.68
1901.40    0.591    12.00
1902.40    0.590    12.32
1903.40    0.589    12.64
1904.40    0.588    12.96
1905.40    0.586    13.29
1906.40    0.585    13.61
1907.40    0.583    13.94
1908.40    0.582    14.27
1909.40    0.580    14.60
1910.40    0.578    14.93
1911.40    0.577    15.27
1912.40    0.575    15.61
1913.40    0.573    15.95
1914.40    0.571    16.29
1915.40    0.569    16.63
1916.40    0.567    16.98
1917.40    0.565    17.33
1918.40    0.562    17.68
1919.40    0.560    18.03
1920.40    0.557    18.39
1921.40    0.555    18.75
1922.40    0.552    19.12
1923.40    0.550    19.48
1924.40    0.547    19.86
1925.40    0.544    20.23
1926.40    0.541    20.61
1927.40    0.538    20.99
1928.40    0.535    21.38
1929.40    0.532    21.77
1930.40    0.529    22.17
1931.40    0.526    22.57
1932.40    0.522    22.98
1933.40    0.519    23.39
1934.40    0.515    23.81
1935.40    0.512    24.23
1936.40    0.508    24.66
1937.40    0.504    25.10
1938.40    0.500    25.54
1939.40    0.496    25.99
1940.40    0.492    26.45
1941.40    0.488    26.91
1942.40    0.484    27.38
1943.40    0.479    27.87
1944.40    0.475    28.36
1945.40    0.470    28.86
1946.40    0.466    29.37
1947.40    0.461    29.89
1948.40    0.456    30.42
1949.40    0.451    30.96
1950.40    0.446    31.51
1951.40    0.441    32.08
1952.40    0.436    32.66
1953.40    0.430    33.26
1954.40    0.425    33.87
1955.40    0.419    34.50
1956.40    0.413    35.15
1957.40    0.407    35.81
1958.40    0.401    36.49
1959.40    0.395    37.20
1960.40    0.389    37.92
1961.40    0.383    38.67
1962.40    0.376    39.45
1963.40    0.370    40.25
1964.40    0.363    41.08
1965.40    0.356    41.95
1966.40    0.349    42.85
1967.40    0.342    43.78
1968.40    0.335    44.76
1969.40    0.327    45.78
1970.40    0.320    46.84
1971.40    0.312    47.96
1972.40    0.305    49.13
1973.40    0.297    50.37
1974.40    0.289    51.67
1975.40    0.281    53.05
1976.40    0.273    54.51
1977.40    0.264    56.06
1978.40    0.256    57.71
1979.40    0.247    59.48
1980.40    0.239    61.37
1981.40    0.230    63.40
1982.40    0.222    65.59
1983.40    0.213    67.96
1984.40    0.204    70.53
1985.40    0.196    73.33
1986.40    0.187    76.37
1987.40    0.179    79.71
1988.40    0.171    83.36
1989.40    0.163    87.37
1990.40    0.156    91.76
1991.40    0.149    96.58
1992.40    0.143   101.83
1993.40    0.137   107.53
1994.40    0.133   113.65
1995.40    0.129   120.15
1996.40    0.127   126.95
1997.40    0.126   133.95
1998.40    0.126   141.02
1999.40    0.127   148.02
2000.40    0.129   154.85
2001.40    0.132   161.42
2002.40    0.136   167.67
2003.40    0.140   173.56
2004.40    0.144   179.11
2005.40    0.149   184.32
2006.40    0.153   189.22
2007.40    0.158   193.84
2008.40    0.162   198.21
2009.40    0.166   202.37
2010.40    0.170   206.34
2011.40    0.173   210.14
2012.40    0.176   213.80
2013.40    0.179   217.34
2014.40    0.182   220.77
2015.40    0.184   224.10
2016.40    0.187   227.35
2017.40    0.189   230.52
2018.40    0.191   233.61
2019.40    0.193   236.65
2020.40    0.195   239.61
2021.40    0.197   242.52
2022.40    0.199   245.36
2023.40    0.201   248.15
2024.40    0.203   250.88
2025.40    0.206   253.55
2026.40    0.208   256.17
2027.40    0.210   258.72
2028.40    0.213   261.22
2029.40    0.215   263.66
2030.40    0.218   266.04
2031.40    0.221   268.37
2032.40    0.224   270.63
2033.40    0.226   272.84
2034.40    0.230   274.99
2035.40    0.233   277.08
2036.40    0.236   279.12
2037.40    0.239   281.10
2038.40    0.243   283.02
2039.40    0.246   284.89
2040.40    0.250   286.71
2041.40    0.253   288.47
2042.40    0.257   290.19
2043.40    0.261   291.86
2044.40    0.265   293.47
2045.40    0.269   295.04
2046.40    0.273   296.57
2047.40    0.277   298.05
2048.40    0.281   299.49
2049.40    0.285   300.89
2050.40    0.289   302.25
2051.40    0.293   303.57
2052.40    0.297   304.86
2053.40    0.301   306.11
2054.40    0.305   307.32
2055.40    0.310   308.50
2056.40    0.314   309.65
2057.40    0.318   310.77
2058.40    0.322   311.86
2059.40    0.327   312.92
2060.40    0.331   313.96
2061.40    0.335   314.96
2062.40    0.339   315.95
2063.40    0.344   316.90
2064.40    0.348   317.84
2065.40    0.352   318.75
2066.40    0.356   319.64
2067.40    0.360   320.51
2068.40    0.365   321.36
2069.40    0.369   322.19
2070.40    0.373   323.01
2071.40    0.377   323.80
2072.40    0.381   324.58
2073.40    0.385   325.34
2074.40    0.389   326.08
2075.40    0.393   326.81
2076.40    0.398   327.53
2077.40    0.402   328.23
2078.40    0.406   328.91
2079.40    0.409   329.58
2080.40    0.413   330.24
2081.40    0.417   330.89
2082.40    0.421   331.53
2083.40    0.425   332.15
2084.40    0.429   332.76
2085.40    0.433   333.37
2086.40    0.436   333.96
2087.40    0.440   334.54
2088.40    0.444   335.11
2089.40    0.447   335.68
2090.40    0.451   336.23
2091.40    0.455   336.77
2092.40    0.458   337.31
2093.40    0.462   337.84
2094.40    0.465   338.36
2095.40    0.469   338.87
2096.40    0.472   339.38
2097.40    0.475   339.87
2098.40    0.479   340.37
2099.40    0.482   340.85
2100.40    0.485   341.33
2101.40    0.488   341.80
2102.40    0.492   342.26
2103.40    0.495   342.72
2104.40    0.498   343.18
2105.40    0.501   343.63
2106.40    0.504   344.07
2107.40    0.507   344.51
2108.40    0.510   344.94
2109.40    0.513   345.37
2110.40    0.515   345.79
2111.40    0.518   346.21
2112.40    0.521   346.62
2113.40    0.524   347.03
2114.40    0.526   347.44
2115.40    0.529   347.84
2116.40    0.532   348.23
2117.40    0.534   348.63
2118.40    0.537   349.02
2119.40    0.539   349.40
2120.40    0.542   349.79
2121.40    0.544   350.17
2122.40    0.546   350.54
2123.40    0.549   350.91
2124.40    0.551   351.28
2125.40    0.553   351.65
2126.40    0.555   352.02
2127.40    0.557   352.38
2128.40    0.559   352.73
2129.40    0.561   353.09
2130.40    0.563   353.44
2131.40    0.565   353.79
2132.40    0.567   354.14
2133.40    0.569   354.49
2134.40    0.571   354.83
2135.40    0.572   355.18
2136.40    0.574   355.52
2137.40    0.576   355.85
2138.40    0.577   356.19
2139.40    0.579   356.52
2140.40    0.580   356.86
2141.40    0.582   357.19
2142.40    0.583   357.52
2143.40    0.585   357.84
2144.40    0.586   358.17
2145.40    0.587   358.49
2146.40    0.588   358.82
2147.40    0.590   359.14
2148.40    0.591   359.46
2149.40    0.592   359.78
2150.40    0.593     0.10
2151.40    0.594     0.42
2152.40    0.595     0.73
2153.40    0.596     1.05
2154.40    0.596     1.36
2155.40    0.597     1.68
2156.40    0.598     1.99
2157.40    0.598     2.30
2158.40    0.599     2.61
2159.40    0.600     2.92
2160.40    0.600     3.23
2161.40    0.601     3.54
2162.40    0.601     3.85
2163.40    0.601     4.16
2164.40    0.602     4.47
2165.40    0.602     4.78
2166.40    0.602     5.09
2167.40    0.602     5.40
2168.40    0.602     5.70






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 16:18:31



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