Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:47:21

Orbital Elements for HO366AB
WDS: HO366AB WDS ID/Discoverer
P: 353.110 Orbital period (years)
a: 0.404 Semi-major axis (arcseconds)
i: 19.4 Inclination (degrees)
Ω: 9.8 Longitude of ascending node (degrees)
T: 2001.300 Epoch of periastron passage (year)
e: 0.764 Eccentricity
ω: 166.1 Longitude of periastron (degrees)
Start-Year: 1849.0 Year
End-Year: 2201.0 Year
Epoch: 2025.0 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: 1997 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HO366AB



WDS 6th Orbit including measures of HO366AB

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of HO366AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.251    295.3
-------------------------
1849.0     0.702      1.6
1850.0     0.702      1.8
1851.0     0.701      2.0
1852.0     0.700      2.2
1853.0     0.699      2.4
1854.0     0.698      2.6
1855.0     0.698      2.8
1856.0     0.697      3.0
1857.0     0.696      3.2
1858.0     0.695      3.4
1859.0     0.694      3.6
1860.0     0.693      3.8
1861.0     0.691      4.1
1862.0     0.690      4.3
1863.0     0.689      4.5
1864.0     0.688      4.7
1865.0     0.687      4.9
1866.0     0.685      5.1
1867.0     0.684      5.3
1868.0     0.683      5.6
1869.0     0.681      5.8
1870.0     0.680      6.0
1871.0     0.678      6.2
1872.0     0.677      6.4
1873.0     0.675      6.7
1874.0     0.674      6.9
1875.0     0.672      7.1
1876.0     0.671      7.3
1877.0     0.669      7.6
1878.0     0.667      7.8
1879.0     0.666      8.0
1880.0     0.664      8.2
1881.0     0.662      8.5
1882.0     0.660      8.7
1883.0     0.658      8.9
1884.0     0.656      9.2
1885.0     0.654      9.4
1886.0     0.652      9.6
1887.0     0.650      9.9
1888.0     0.648     10.1
1889.0     0.646     10.4
1890.0     0.644     10.6
1891.0     0.642     10.9
1892.0     0.639     11.1
1893.0     0.637     11.3
1894.0     0.635     11.6
1895.0     0.633     11.8
1896.0     0.630     12.1
1897.0     0.628     12.4
1898.0     0.625     12.6
1899.0     0.623     12.9
1900.0     0.620     13.1
1901.0     0.618     13.4
1902.0     0.615     13.7
1903.0     0.612     13.9
1904.0     0.610     14.2
1905.0     0.607     14.5
1906.0     0.604     14.8
1907.0     0.601     15.0
1908.0     0.598     15.3
1909.0     0.595     15.6
1910.0     0.592     15.9
1911.0     0.589     16.2
1912.0     0.586     16.5
1913.0     0.583     16.8
1914.0     0.580     17.1
1915.0     0.577     17.4
1916.0     0.574     17.7
1917.0     0.570     18.0
1918.0     0.567     18.3
1919.0     0.564     18.6
1920.0     0.560     18.9
1921.0     0.557     19.3
1922.0     0.553     19.6
1923.0     0.550     19.9
1924.0     0.546     20.3
1925.0     0.542     20.6
1926.0     0.538     21.0
1927.0     0.535     21.3
1928.0     0.531     21.7
1929.0     0.527     22.0
1930.0     0.523     22.4
1931.0     0.519     22.8
1932.0     0.515     23.1
1933.0     0.511     23.5
1934.0     0.507     23.9
1935.0     0.502     24.3
1936.0     0.498     24.7
1937.0     0.494     25.1
1938.0     0.489     25.6
1939.0     0.485     26.0
1940.0     0.480     26.4
1941.0     0.476     26.9
1942.0     0.471     27.3
1943.0     0.467     27.8
1944.0     0.462     28.2
1945.0     0.457     28.7
1946.0     0.452     29.2
1947.0     0.447     29.7
1948.0     0.442     30.2
1949.0     0.437     30.7
1950.0     0.432     31.3
1951.0     0.427     31.8
1952.0     0.421     32.4
1953.0     0.416     33.0
1954.0     0.411     33.6
1955.0     0.405     34.2
1956.0     0.399     34.8
1957.0     0.394     35.4
1958.0     0.388     36.1
1959.0     0.382     36.8
1960.0     0.376     37.5
1961.0     0.370     38.2
1962.0     0.364     39.0
1963.0     0.358     39.8
1964.0     0.352     40.6
1965.0     0.345     41.4
1966.0     0.339     42.3
1967.0     0.332     43.2
1968.0     0.326     44.1
1969.0     0.319     45.1
1970.0     0.312     46.1
1971.0     0.305     47.1
1972.0     0.298     48.3
1973.0     0.291     49.4
1974.0     0.284     50.7
1975.0     0.277     51.9
1976.0     0.269     53.3
1977.0     0.262     54.7
1978.0     0.254     56.3
1979.0     0.246     57.9
1980.0     0.238     59.6
1981.0     0.230     61.5
1982.0     0.222     63.4
1983.0     0.214     65.6
1984.0     0.206     67.8
1985.0     0.198     70.3
1986.0     0.189     73.0
1987.0     0.181     76.0
1988.0     0.173     79.2
1989.0     0.164     82.8
1990.0     0.156     86.8
1991.0     0.148     91.2
1992.0     0.139     96.1
1993.0     0.132    101.6
1994.0     0.124    107.8
1995.0     0.117    114.8
1996.0     0.111    122.6
1997.0     0.105    131.3
1998.0     0.101    140.9
1999.0     0.098    151.2
2000.0     0.096    162.1
2001.0     0.095    173.3
2002.0     0.096    184.5
2003.0     0.098    195.3
2004.0     0.101    205.6
2005.0     0.105    215.1
2006.0     0.110    223.9
2007.0     0.116    231.8
2008.0     0.122    238.9
2009.0     0.129    245.3
2010.0     0.136    251.0
2011.0     0.144    256.2
2012.0     0.151    260.9
2013.0     0.159    265.1
2014.0     0.167    268.9
2015.0     0.175    272.3
2016.0     0.183    275.5
2017.0     0.190    278.4
2018.0     0.198    281.1
2019.0     0.206    283.6
2020.0     0.214    285.9
2021.0     0.221    288.0
2022.0     0.229    290.0
2023.0     0.236    291.9
2024.0     0.244    293.7
2025.0     0.251    295.3
2026.0     0.258    296.9
2027.0     0.265    298.4
2028.0     0.272    299.8
2029.0     0.279    301.1
2030.0     0.286    302.4
2031.0     0.293    303.6
2032.0     0.300    304.7
2033.0     0.307    305.8
2034.0     0.313    306.9
2035.0     0.320    307.9
2036.0     0.326    308.9
2037.0     0.332    309.8
2038.0     0.338    310.7
2039.0     0.345    311.6
2040.0     0.351    312.4
2041.0     0.357    313.2
2042.0     0.363    314.0
2043.0     0.368    314.8
2044.0     0.374    315.5
2045.0     0.380    316.2
2046.0     0.386    316.9
2047.0     0.391    317.6
2048.0     0.397    318.2
2049.0     0.402    318.8
2050.0     0.407    319.5
2051.0     0.413    320.1
2052.0     0.418    320.7
2053.0     0.423    321.2
2054.0     0.428    321.8
2055.0     0.433    322.3
2056.0     0.438    322.9
2057.0     0.443    323.4
2058.0     0.448    323.9
2059.0     0.453    324.4
2060.0     0.457    324.9
2061.0     0.462    325.4
2062.0     0.467    325.8
2063.0     0.471    326.3
2064.0     0.476    326.8
2065.0     0.480    327.2
2066.0     0.484    327.6
2067.0     0.489    328.1
2068.0     0.493    328.5
2069.0     0.497    328.9
2070.0     0.501    329.3
2071.0     0.505    329.7
2072.0     0.509    330.1
2073.0     0.513    330.5
2074.0     0.517    330.9
2075.0     0.521    331.2
2076.0     0.525    331.6
2077.0     0.529    332.0
2078.0     0.533    332.3
2079.0     0.536    332.7
2080.0     0.540    333.0
2081.0     0.544    333.4
2082.0     0.547    333.7
2083.0     0.551    334.1
2084.0     0.554    334.4
2085.0     0.558    334.7
2086.0     0.561    335.0
2087.0     0.564    335.4
2088.0     0.568    335.7
2089.0     0.571    336.0
2090.0     0.574    336.3
2091.0     0.577    336.6
2092.0     0.580    336.9
2093.0     0.584    337.2
2094.0     0.587    337.5
2095.0     0.590    337.8
2096.0     0.593    338.1
2097.0     0.595    338.4
2098.0     0.598    338.7
2099.0     0.601    338.9
2100.0     0.604    339.2
2101.0     0.607    339.5
2102.0     0.609    339.8
2103.0     0.612    340.0
2104.0     0.615    340.3
2105.0     0.617    340.6
2106.0     0.620    340.8
2107.0     0.622    341.1
2108.0     0.625    341.4
2109.0     0.627    341.6
2110.0     0.630    341.9
2111.0     0.632    342.1
2112.0     0.634    342.4
2113.0     0.637    342.6
2114.0     0.639    342.9
2115.0     0.641    343.1
2116.0     0.643    343.4
2117.0     0.645    343.6
2118.0     0.647    343.9
2119.0     0.650    344.1
2120.0     0.652    344.3
2121.0     0.654    344.6
2122.0     0.655    344.8
2123.0     0.657    345.0
2124.0     0.659    345.3
2125.0     0.661    345.5
2126.0     0.663    345.7
2127.0     0.665    346.0
2128.0     0.666    346.2
2129.0     0.668    346.4
2130.0     0.670    346.7
2131.0     0.671    346.9
2132.0     0.673    347.1
2133.0     0.675    347.3
2134.0     0.676    347.6
2135.0     0.678    347.8
2136.0     0.679    348.0
2137.0     0.680    348.2
2138.0     0.682    348.4
2139.0     0.683    348.6
2140.0     0.685    348.9
2141.0     0.686    349.1
2142.0     0.687    349.3
2143.0     0.688    349.5
2144.0     0.690    349.7
2145.0     0.691    349.9
2146.0     0.692    350.1
2147.0     0.693    350.4
2148.0     0.694    350.6
2149.0     0.695    350.8
2150.0     0.696    351.0
2151.0     0.697    351.2
2152.0     0.698    351.4
2153.0     0.699    351.6
2154.0     0.700    351.8
2155.0     0.700    352.0
2156.0     0.701    352.2
2157.0     0.702    352.4
2158.0     0.703    352.6
2159.0     0.703    352.8
2160.0     0.704    353.1
2161.0     0.705    353.3
2162.0     0.705    353.5
2163.0     0.706    353.7
2164.0     0.706    353.9
2165.0     0.707    354.1
2166.0     0.707    354.3
2167.0     0.708    354.5
2168.0     0.708    354.7
2169.0     0.709    354.9
2170.0     0.709    355.1
2171.0     0.709    355.3
2172.0     0.709    355.5
2173.0     0.710    355.7
2174.0     0.710    355.9
2175.0     0.710    356.1
2176.0     0.710    356.3
2177.0     0.710    356.5
2178.0     0.710    356.7
2179.0     0.710    356.9
2180.0     0.710    357.1
2181.0     0.710    357.3
2182.0     0.710    357.5
2183.0     0.710    357.7
2184.0     0.710    357.9
2185.0     0.710    358.1
2186.0     0.710    358.3
2187.0     0.710    358.5
2188.0     0.709    358.7
2189.0     0.709    358.9
2190.0     0.709    359.1
2191.0     0.708    359.3
2192.0     0.708    359.5
2193.0     0.708    359.7
2194.0     0.707    359.9
2195.0     0.707      0.1
2196.0     0.706      0.3
2197.0     0.706      0.5
2198.0     0.705      0.7
2199.0     0.705      0.9
2200.0     0.704      1.1






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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.


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