| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 17:22:38 |
| WDS: | HU1570 | WDS ID/Discoverer |
| P: | 221.500 | Orbital period (years) |
| a: | 0.672 | Semi-major axis (arcseconds) |
| i: | 22.9 | Inclination (degrees) |
| Ω: | 155.0 | Longitude of ascending node (degrees) |
| T: | 1955.830 | Epoch of periastron passage (year) |
| e: | 0.748 | Eccentricity |
| ω: | 34.0 | Longitude of periastron (degrees) |
| Start-Year: | 1915.0 | Year |
| End-Year: | 2135.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 055802.61-521216.3 | Epoch-2000 right ascension and declination |
| WDS-ID: | 05580-5212 | WDS designation |
| Discoverer Code: | HU1570 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 40767 | HD catalog number |
| Hipparcos number: | 28240 | Hipparcos catalog number |
| V1: | 9.47 | Magnitude of the primary |
| V2: | 9.66 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2008 | Date of last observation |
| Orbit grade: | 4 | Orbit grade, ranging from 1 'definitive' to 5 'indeterminate' |
| Flags: | Flags |
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Year Sep[“] PA[°] --------------------------------------------- 2025.0 1.049 351.9 ------------------------- 1915.0 0.768 38.4 1916.0 0.757 39.2 1917.0 0.746 40.0 1918.0 0.734 40.8 1919.0 0.722 41.6 1920.0 0.710 42.5 1921.0 0.698 43.4 1922.0 0.686 44.3 1923.0 0.673 45.3 1924.0 0.660 46.3 1925.0 0.647 47.4 1926.0 0.634 48.5 1927.0 0.620 49.6 1928.0 0.606 50.8 1929.0 0.592 52.1 1930.0 0.578 53.4 1931.0 0.563 54.7 1932.0 0.548 56.2 1933.0 0.533 57.7 1934.0 0.518 59.4 1935.0 0.502 61.1 1936.0 0.486 62.9 1937.0 0.470 64.9 1938.0 0.453 67.0 1939.0 0.436 69.3 1940.0 0.419 71.7 1941.0 0.402 74.4 1942.0 0.384 77.3 1943.0 0.366 80.5 1944.0 0.349 84.0 1945.0 0.330 87.9 1946.0 0.312 92.3 1947.0 0.294 97.1 1948.0 0.276 102.7 1949.0 0.258 109.0 1950.0 0.240 116.3 1951.0 0.223 124.7 1952.0 0.207 134.4 1953.0 0.192 145.7 1954.0 0.179 158.8 1955.0 0.170 173.6 1956.0 0.165 189.7 1957.0 0.165 206.3 1958.0 0.171 222.3 1959.0 0.182 236.7 1960.0 0.198 249.2 1961.0 0.217 259.6 1962.0 0.238 268.3 1963.0 0.260 275.6 1964.0 0.282 281.7 1965.0 0.305 286.9 1966.0 0.327 291.4 1967.0 0.349 295.4 1968.0 0.371 298.8 1969.0 0.392 301.9 1970.0 0.413 304.7 1971.0 0.434 307.2 1972.0 0.454 309.5 1973.0 0.473 311.6 1974.0 0.492 313.5 1975.0 0.511 315.3 1976.0 0.529 316.9 1977.0 0.546 318.5 1978.0 0.564 319.9 1979.0 0.580 321.3 1980.0 0.597 322.6 1981.0 0.613 323.8 1982.0 0.629 325.0 1983.0 0.644 326.1 1984.0 0.659 327.2 1985.0 0.673 328.2 1986.0 0.688 329.1 1987.0 0.702 330.1 1988.0 0.715 331.0 1989.0 0.729 331.8 1990.0 0.742 332.7 1991.0 0.754 333.5 1992.0 0.767 334.2 1993.0 0.779 335.0 1994.0 0.791 335.7 1995.0 0.802 336.4 1996.0 0.814 337.1 1997.0 0.825 337.8 1998.0 0.836 338.4 1999.0 0.846 339.1 2000.0 0.857 339.7 2001.0 0.867 340.3 2002.0 0.877 340.9 2003.0 0.886 341.5 2004.0 0.896 342.0 2005.0 0.905 342.6 2006.0 0.914 343.1 2007.0 0.923 343.6 2008.0 0.932 344.2 2009.0 0.940 344.7 2010.0 0.948 345.2 2011.0 0.956 345.7 2012.0 0.964 346.2 2013.0 0.972 346.6 2014.0 0.979 347.1 2015.0 0.986 347.6 2016.0 0.993 348.0 2017.0 1.000 348.5 2018.0 1.007 348.9 2019.0 1.014 349.4 2020.0 1.020 349.8 2021.0 1.026 350.2 2022.0 1.032 350.7 2023.0 1.038 351.1 2024.0 1.044 351.5 2025.0 1.049 351.9 2026.0 1.054 352.3 2027.0 1.060 352.7 2028.0 1.065 353.1 2029.0 1.069 353.5 2030.0 1.074 353.9 2031.0 1.079 354.3 2032.0 1.083 354.7 2033.0 1.087 355.0 2034.0 1.091 355.4 2035.0 1.095 355.8 2036.0 1.099 356.2 2037.0 1.103 356.5 2038.0 1.106 356.9 2039.0 1.110 357.3 2040.0 1.113 357.6 2041.0 1.116 358.0 2042.0 1.119 358.4 2043.0 1.121 358.7 2044.0 1.124 359.1 2045.0 1.127 359.4 2046.0 1.129 359.8 2047.0 1.131 0.1 2048.0 1.133 0.5 2049.0 1.135 0.8 2050.0 1.137 1.2 2051.0 1.138 1.5 2052.0 1.140 1.9 2053.0 1.141 2.2 2054.0 1.143 2.6 2055.0 1.144 2.9 2056.0 1.145 3.2 2057.0 1.145 3.6 2058.0 1.146 3.9 2059.0 1.147 4.3 2060.0 1.147 4.6 2061.0 1.147 5.0 2062.0 1.148 5.3 2063.0 1.148 5.6 2064.0 1.147 6.0 2065.0 1.147 6.3 2066.0 1.147 6.7 2067.0 1.146 7.0 2068.0 1.146 7.3 2069.0 1.145 7.7 2070.0 1.144 8.0 2071.0 1.143 8.4 2072.0 1.142 8.7 2073.0 1.140 9.1 2074.0 1.139 9.4 2075.0 1.137 9.7 2076.0 1.136 10.1 2077.0 1.134 10.4 2078.0 1.132 10.8 2079.0 1.130 11.1 2080.0 1.128 11.5 2081.0 1.125 11.8 2082.0 1.123 12.2 2083.0 1.120 12.6 2084.0 1.117 12.9 2085.0 1.115 13.3 2086.0 1.112 13.6 2087.0 1.108 14.0 2088.0 1.105 14.4 2089.0 1.102 14.7 2090.0 1.098 15.1 2091.0 1.094 15.5 2092.0 1.091 15.9 2093.0 1.087 16.2 2094.0 1.082 16.6 2095.0 1.078 17.0 2096.0 1.074 17.4 2097.0 1.069 17.8 2098.0 1.065 18.2 2099.0 1.060 18.6 2100.0 1.055 19.0 2101.0 1.050 19.4 2102.0 1.045 19.8 2103.0 1.039 20.2 2104.0 1.034 20.6 2105.0 1.028 21.0 2106.0 1.022 21.5 2107.0 1.016 21.9 2108.0 1.010 22.3 2109.0 1.004 22.8 2110.0 0.998 23.2 2111.0 0.991 23.7 2112.0 0.984 24.1 2113.0 0.978 24.6 2114.0 0.971 25.1 2115.0 0.963 25.6 2116.0 0.956 26.1 2117.0 0.949 26.5 2118.0 0.941 27.0 2119.0 0.933 27.6 2120.0 0.925 28.1 2121.0 0.917 28.6 2122.0 0.909 29.1 2123.0 0.900 29.7 2124.0 0.892 30.3 2125.0 0.883 30.8 2126.0 0.874 31.4 2127.0 0.865 32.0 2128.0 0.855 32.6 2129.0 0.846 33.2 2130.0 0.836 33.9 2131.0 0.826 34.5 2132.0 0.816 35.2 2133.0 0.806 35.9 2134.0 0.795 36.6