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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 18:20:18
WDS:
HWE28AB
WDS ID/Discoverer
P:
362.998
Orbital period (years)
a:
1.4886
Semi-major axis (arcseconds)
i:
74.536
Inclination (degrees)
Ω:
113.094
Longitude of ascending node (degrees)
T:
1958.521
Epoch of periastron passage (year)
e:
0.76736
Eccentricity
ω:
89.984
Longitude of periastron (degrees)
Start-Year:
1844.0
Year
End-Year:
2206.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
135332.75-353951.2
Epoch-2000 right ascension and declination
WDS-ID:
13535-3540
WDS designation
Discoverer Code:
HWE28AB
Discover designation and components
ADS number:
.
Aitken Double Star catalog
HD number:
120987
HD catalog number
Hipparcos number:
67819
Hipparcos catalog number
V1:
6.27
Magnitude of the primary
V2:
6.38
Magnitude of the secondary
Equinox:
Equinox
Date:
2014
Date of last observation
Orbit grade:
3
Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:
n
Flags
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Click to expand/collapse ephemeris:
Year Sep[“] PA[°]
---------------------------------------------
2025.0 1.004 318.2
-------------------------
1844.0 0.857 67.4
1845.0 0.861 67.9
1846.0 0.864 68.4
1847.0 0.868 68.9
1848.0 0.872 69.4
1849.0 0.875 69.9
1850.0 0.879 70.3
1851.0 0.883 70.8
1852.0 0.887 71.3
1853.0 0.890 71.8
1854.0 0.894 72.3
1855.0 0.897 72.7
1856.0 0.901 73.2
1857.0 0.905 73.7
1858.0 0.908 74.1
1859.0 0.912 74.6
1860.0 0.915 75.0
1861.0 0.919 75.5
1862.0 0.922 75.9
1863.0 0.926 76.3
1864.0 0.929 76.8
1865.0 0.933 77.2
1866.0 0.936 77.6
1867.0 0.940 78.1
1868.0 0.943 78.5
1869.0 0.946 78.9
1870.0 0.949 79.3
1871.0 0.952 79.7
1872.0 0.956 80.2
1873.0 0.959 80.6
1874.0 0.962 81.0
1875.0 0.965 81.4
1876.0 0.967 81.8
1877.0 0.970 82.2
1878.0 0.973 82.6
1879.0 0.976 83.0
1880.0 0.978 83.4
1881.0 0.981 83.8
1882.0 0.983 84.2
1883.0 0.986 84.5
1884.0 0.988 84.9
1885.0 0.990 85.3
1886.0 0.993 85.7
1887.0 0.995 86.1
1888.0 0.996 86.5
1889.0 0.998 86.8
1890.0 1.000 87.2
1891.0 1.002 87.6
1892.0 1.003 88.0
1893.0 1.005 88.3
1894.0 1.006 88.7
1895.0 1.007 89.1
1896.0 1.008 89.4
1897.0 1.009 89.8
1898.0 1.010 90.2
1899.0 1.010 90.5
1900.0 1.011 90.9
1901.0 1.011 91.3
1902.0 1.011 91.7
1903.0 1.011 92.0
1904.0 1.011 92.4
1905.0 1.011 92.8
1906.0 1.010 93.1
1907.0 1.009 93.5
1908.0 1.008 93.9
1909.0 1.007 94.2
1910.0 1.005 94.6
1911.0 1.004 95.0
1912.0 1.002 95.3
1913.0 1.000 95.7
1914.0 0.997 96.1
1915.0 0.994 96.5
1916.0 0.991 96.9
1917.0 0.988 97.2
1918.0 0.984 97.6
1919.0 0.980 98.0
1920.0 0.976 98.4
1921.0 0.971 98.8
1922.0 0.966 99.2
1923.0 0.961 99.6
1924.0 0.955 100.0
1925.0 0.949 100.4
1926.0 0.942 100.9
1927.0 0.934 101.3
1928.0 0.926 101.7
1929.0 0.918 102.2
1930.0 0.909 102.6
1931.0 0.899 103.1
1932.0 0.889 103.5
1933.0 0.878 104.0
1934.0 0.866 104.5
1935.0 0.853 105.0
1936.0 0.839 105.6
1937.0 0.825 106.1
1938.0 0.809 106.7
1939.0 0.792 107.2
1940.0 0.774 107.9
1941.0 0.755 108.5
1942.0 0.734 109.2
1943.0 0.712 109.9
1944.0 0.688 110.7
1945.0 0.662 111.5
1946.0 0.634 112.4
1947.0 0.604 113.4
1948.0 0.571 114.4
1949.0 0.535 115.7
1950.0 0.497 117.1
1951.0 0.455 118.7
1952.0 0.410 120.8
1953.0 0.360 123.3
1954.0 0.308 126.7
1955.0 0.252 131.5
1956.0 0.195 139.2
1957.0 0.140 153.1
1958.0 0.099 181.1
1959.0 0.098 223.3
1960.0 0.138 252.2
1961.0 0.192 266.6
1962.0 0.249 274.4
1963.0 0.305 279.3
1964.0 0.358 282.7
1965.0 0.407 285.3
1966.0 0.453 287.4
1967.0 0.495 289.0
1968.0 0.534 290.4
1969.0 0.569 291.7
1970.0 0.602 292.8
1971.0 0.633 293.8
1972.0 0.661 294.7
1973.0 0.687 295.5
1974.0 0.711 296.3
1975.0 0.733 297.0
1976.0 0.754 297.7
1977.0 0.774 298.3
1978.0 0.792 298.9
1979.0 0.808 299.5
1980.0 0.824 300.1
1981.0 0.839 300.6
1982.0 0.853 301.1
1983.0 0.865 301.6
1984.0 0.877 302.1
1985.0 0.889 302.6
1986.0 0.899 303.1
1987.0 0.909 303.5
1988.0 0.918 304.0
1989.0 0.926 304.4
1990.0 0.934 304.9
1991.0 0.942 305.3
1992.0 0.949 305.7
1993.0 0.955 306.1
1994.0 0.961 306.5
1995.0 0.967 306.9
1996.0 0.972 307.3
1997.0 0.976 307.7
1998.0 0.981 308.1
1999.0 0.985 308.5
2000.0 0.988 308.9
2001.0 0.992 309.3
2002.0 0.995 309.7
2003.0 0.998 310.1
2004.0 1.000 310.4
2005.0 1.002 310.8
2006.0 1.004 311.2
2007.0 1.006 311.5
2008.0 1.007 311.9
2009.0 1.009 312.3
2010.0 1.010 312.7
2011.0 1.011 313.0
2012.0 1.011 313.4
2013.0 1.012 313.8
2014.0 1.012 314.1
2015.0 1.012 314.5
2016.0 1.012 314.9
2017.0 1.012 315.2
2018.0 1.011 315.6
2019.0 1.010 316.0
2020.0 1.010 316.3
2021.0 1.009 316.7
2022.0 1.008 317.1
2023.0 1.007 317.4
2024.0 1.005 317.8
2025.0 1.004 318.2
2026.0 1.003 318.6
2027.0 1.001 318.9
2028.0 0.999 319.3
2029.0 0.997 319.7
2030.0 0.995 320.1
2031.0 0.993 320.4
2032.0 0.991 320.8
2033.0 0.989 321.2
2034.0 0.987 321.6
2035.0 0.984 322.0
2036.0 0.982 322.4
2037.0 0.979 322.8
2038.0 0.977 323.2
2039.0 0.974 323.5
2040.0 0.971 323.9
2041.0 0.968 324.3
2042.0 0.966 324.7
2043.0 0.963 325.2
2044.0 0.960 325.6
2045.0 0.957 326.0
2046.0 0.953 326.4
2047.0 0.950 326.8
2048.0 0.947 327.2
2049.0 0.944 327.6
2050.0 0.941 328.1
2051.0 0.937 328.5
2052.0 0.934 328.9
2053.0 0.930 329.3
2054.0 0.927 329.8
2055.0 0.924 330.2
2056.0 0.920 330.7
2057.0 0.916 331.1
2058.0 0.913 331.6
2059.0 0.909 332.0
2060.0 0.906 332.5
2061.0 0.902 332.9
2062.0 0.899 333.4
2063.0 0.895 333.9
2064.0 0.891 334.3
2065.0 0.888 334.8
2066.0 0.884 335.3
2067.0 0.880 335.8
2068.0 0.876 336.2
2069.0 0.873 336.7
2070.0 0.869 337.2
2071.0 0.865 337.7
2072.0 0.862 338.2
2073.0 0.858 338.7
2074.0 0.854 339.3
2075.0 0.851 339.8
2076.0 0.847 340.3
2077.0 0.843 340.8
2078.0 0.840 341.4
2079.0 0.836 341.9
2080.0 0.832 342.4
2081.0 0.829 343.0
2082.0 0.825 343.5
2083.0 0.822 344.1
2084.0 0.818 344.6
2085.0 0.814 345.2
2086.0 0.811 345.8
2087.0 0.807 346.3
2088.0 0.804 346.9
2089.0 0.801 347.5
2090.0 0.797 348.1
2091.0 0.794 348.7
2092.0 0.791 349.3
2093.0 0.787 349.9
2094.0 0.784 350.5
2095.0 0.781 351.1
2096.0 0.778 351.7
2097.0 0.775 352.4
2098.0 0.772 353.0
2099.0 0.769 353.6
2100.0 0.766 354.3
2101.0 0.763 354.9
2102.0 0.760 355.5
2103.0 0.757 356.2
2104.0 0.754 356.9
2105.0 0.752 357.5
2106.0 0.749 358.2
2107.0 0.746 358.9
2108.0 0.744 359.5
2109.0 0.741 0.2
2110.0 0.739 0.9
2111.0 0.737 1.6
2112.0 0.734 2.3
2113.0 0.732 3.0
2114.0 0.730 3.7
2115.0 0.728 4.4
2116.0 0.726 5.1
2117.0 0.724 5.8
2118.0 0.722 6.5
2119.0 0.720 7.3
2120.0 0.719 8.0
2121.0 0.717 8.7
2122.0 0.715 9.5
2123.0 0.714 10.2
2124.0 0.713 10.9
2125.0 0.711 11.7
2126.0 0.710 12.4
2127.0 0.709 13.2
2128.0 0.708 13.9
2129.0 0.707 14.7
2130.0 0.706 15.4
2131.0 0.705 16.2
2132.0 0.704 16.9
2133.0 0.704 17.7
2134.0 0.703 18.4
2135.0 0.703 19.2
2136.0 0.702 20.0
2137.0 0.702 20.7
2138.0 0.702 21.5
2139.0 0.702 22.3
2140.0 0.701 23.0
2141.0 0.702 23.8
2142.0 0.702 24.5
2143.0 0.702 25.3
2144.0 0.702 26.1
2145.0 0.703 26.8
2146.0 0.703 27.6
2147.0 0.704 28.4
2148.0 0.704 29.1
2149.0 0.705 29.9
2150.0 0.706 30.6
2151.0 0.707 31.4
2152.0 0.708 32.1
2153.0 0.709 32.9
2154.0 0.710 33.6
2155.0 0.711 34.4
2156.0 0.712 35.1
2157.0 0.714 35.9
2158.0 0.715 36.6
2159.0 0.717 37.3
2160.0 0.718 38.1
2161.0 0.720 38.8
2162.0 0.722 39.5
2163.0 0.723 40.2
2164.0 0.725 40.9
2165.0 0.727 41.6
2166.0 0.729 42.4
2167.0 0.732 43.1
2168.0 0.734 43.8
2169.0 0.736 44.5
2170.0 0.738 45.1
2171.0 0.741 45.8
2172.0 0.743 46.5
2173.0 0.746 47.2
2174.0 0.748 47.9
2175.0 0.751 48.5
2176.0 0.754 49.2
2177.0 0.756 49.9
2178.0 0.759 50.5
2179.0 0.762 51.2
2180.0 0.765 51.8
2181.0 0.768 52.4
2182.0 0.771 53.1
2183.0 0.774 53.7
2184.0 0.777 54.3
2185.0 0.780 55.0
2186.0 0.783 55.6
2187.0 0.786 56.2
2188.0 0.790 56.8
2189.0 0.793 57.4
2190.0 0.796 58.0
2191.0 0.800 58.6
2192.0 0.803 59.2
2193.0 0.807 59.7
2194.0 0.810 60.3
2195.0 0.814 60.9
2196.0 0.817 61.4
2197.0 0.821 62.0
2198.0 0.824 62.6
2199.0 0.828 63.1
2200.0 0.831 63.7
2201.0 0.835 64.2
2202.0 0.839 64.7
2203.0 0.842 65.3
2204.0 0.846 65.8
2205.0 0.850 66.3
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 .
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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