| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 18:53:35 |
| WDS: | BU1125AB | WDS ID/Discoverer |
| P: | 213.970 | Orbital period (years) |
| a: | 0.787 | Semi-major axis (arcseconds) |
| i: | 55.1 | Inclination (degrees) |
| Ω: | 161.3 | Longitude of ascending node (degrees) |
| T: | 2028.730 | Epoch of periastron passage (year) |
| e: | 0.601 | Eccentricity |
| ω: | 66.0 | Longitude of periastron (degrees) |
| Start-Year: | 1919.0 | Year |
| End-Year: | 2131.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 180145.19+011818.4 | Epoch-2000 right ascension and declination |
| WDS-ID: | 18018+0118 | WDS designation |
| Discoverer Code: | BU1125AB | Discover designation and components |
| ADS number: | 10990 | Aitken Double Star catalog |
| HD number: | 164577 | HD catalog number |
| Hipparcos number: | 88290 | Hipparcos catalog number |
| V1: | 4.52 | Magnitude of the primary |
| V2: | 7.48 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2014 | Date of last observation |
| Orbit grade: | 4 | Orbit grade, ranging from 1 'definitive' to 5 'indeterminate' |
| Flags: | n | Flags |
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Year Sep[“] PA[°] --------------------------------------------- 2025.0 0.291 183.6 ------------------------- 1919.0 0.846 31.6 1920.0 0.842 32.2 1921.0 0.838 32.9 1922.0 0.833 33.6 1923.0 0.829 34.3 1924.0 0.825 35.0 1925.0 0.820 35.7 1926.0 0.815 36.4 1927.0 0.811 37.1 1928.0 0.806 37.8 1929.0 0.802 38.6 1930.0 0.797 39.3 1931.0 0.792 40.1 1932.0 0.787 40.8 1933.0 0.783 41.6 1934.0 0.778 42.4 1935.0 0.773 43.2 1936.0 0.768 44.0 1937.0 0.763 44.8 1938.0 0.758 45.6 1939.0 0.753 46.5 1940.0 0.748 47.3 1941.0 0.744 48.2 1942.0 0.739 49.0 1943.0 0.734 49.9 1944.0 0.729 50.8 1945.0 0.724 51.7 1946.0 0.719 52.6 1947.0 0.714 53.5 1948.0 0.709 54.5 1949.0 0.705 55.4 1950.0 0.700 56.4 1951.0 0.695 57.4 1952.0 0.690 58.4 1953.0 0.686 59.4 1954.0 0.681 60.4 1955.0 0.676 61.4 1956.0 0.672 62.5 1957.0 0.667 63.6 1958.0 0.663 64.6 1959.0 0.659 65.7 1960.0 0.654 66.8 1961.0 0.650 67.9 1962.0 0.646 69.1 1963.0 0.642 70.2 1964.0 0.637 71.4 1965.0 0.633 72.6 1966.0 0.630 73.8 1967.0 0.626 75.0 1968.0 0.622 76.2 1969.0 0.618 77.4 1970.0 0.615 78.7 1971.0 0.611 80.0 1972.0 0.608 81.3 1973.0 0.604 82.6 1974.0 0.601 83.9 1975.0 0.598 85.2 1976.0 0.595 86.5 1977.0 0.592 87.9 1978.0 0.589 89.2 1979.0 0.586 90.6 1980.0 0.584 92.0 1981.0 0.581 93.4 1982.0 0.578 94.8 1983.0 0.576 96.3 1984.0 0.573 97.7 1985.0 0.571 99.2 1986.0 0.569 100.6 1987.0 0.567 102.1 1988.0 0.565 103.6 1989.0 0.562 105.1 1990.0 0.560 106.6 1991.0 0.558 108.1 1992.0 0.556 109.7 1993.0 0.554 111.2 1994.0 0.552 112.8 1995.0 0.550 114.3 1996.0 0.548 115.9 1997.0 0.546 117.5 1998.0 0.544 119.1 1999.0 0.541 120.7 2000.0 0.539 122.4 2001.0 0.536 124.0 2002.0 0.533 125.7 2003.0 0.530 127.4 2004.0 0.527 129.1 2005.0 0.524 130.8 2006.0 0.520 132.6 2007.0 0.515 134.3 2008.0 0.511 136.2 2009.0 0.506 138.0 2010.0 0.500 139.9 2011.0 0.493 141.8 2012.0 0.486 143.8 2013.0 0.479 145.8 2014.0 0.470 148.0 2015.0 0.460 150.2 2016.0 0.450 152.5 2017.0 0.438 154.9 2018.0 0.425 157.5 2019.0 0.410 160.2 2020.0 0.394 163.1 2021.0 0.376 166.4 2022.0 0.357 169.9 2023.0 0.336 173.9 2024.0 0.314 178.4 2025.0 0.291 183.6 2026.0 0.267 189.7 2027.0 0.244 197.0 2028.0 0.222 205.9 2029.0 0.203 216.5 2030.0 0.190 228.8 2031.0 0.185 242.5 2032.0 0.188 256.3 2033.0 0.199 269.2 2034.0 0.216 280.3 2035.0 0.239 289.6 2036.0 0.264 297.1 2037.0 0.291 303.4 2038.0 0.318 308.5 2039.0 0.346 312.8 2040.0 0.373 316.5 2041.0 0.400 319.7 2042.0 0.426 322.5 2043.0 0.452 325.0 2044.0 0.476 327.2 2045.0 0.500 329.2 2046.0 0.522 331.0 2047.0 0.544 332.7 2048.0 0.565 334.3 2049.0 0.585 335.7 2050.0 0.604 337.1 2051.0 0.622 338.3 2052.0 0.639 339.5 2053.0 0.656 340.7 2054.0 0.672 341.7 2055.0 0.687 342.8 2056.0 0.702 343.8 2057.0 0.716 344.7 2058.0 0.729 345.6 2059.0 0.742 346.5 2060.0 0.754 347.4 2061.0 0.765 348.2 2062.0 0.776 349.0 2063.0 0.787 349.8 2064.0 0.797 350.5 2065.0 0.806 351.3 2066.0 0.815 352.0 2067.0 0.824 352.7 2068.0 0.832 353.4 2069.0 0.840 354.1 2070.0 0.847 354.7 2071.0 0.854 355.4 2072.0 0.861 356.1 2073.0 0.867 356.7 2074.0 0.873 357.3 2075.0 0.879 357.9 2076.0 0.884 358.6 2077.0 0.889 359.2 2078.0 0.894 359.8 2079.0 0.898 0.4 2080.0 0.902 0.9 2081.0 0.906 1.5 2082.0 0.909 2.1 2083.0 0.913 2.7 2084.0 0.916 3.2 2085.0 0.918 3.8 2086.0 0.921 4.4 2087.0 0.923 4.9 2088.0 0.925 5.5 2089.0 0.927 6.0 2090.0 0.928 6.6 2091.0 0.930 7.2 2092.0 0.931 7.7 2093.0 0.932 8.3 2094.0 0.932 8.8 2095.0 0.933 9.4 2096.0 0.933 9.9 2097.0 0.933 10.4 2098.0 0.933 11.0 2099.0 0.933 11.5 2100.0 0.933 12.1 2101.0 0.932 12.6 2102.0 0.931 13.2 2103.0 0.930 13.7 2104.0 0.929 14.3 2105.0 0.928 14.8 2106.0 0.927 15.4 2107.0 0.925 16.0 2108.0 0.924 16.5 2109.0 0.922 17.1 2110.0 0.920 17.6 2111.0 0.918 18.2 2112.0 0.916 18.8 2113.0 0.913 19.3 2114.0 0.911 19.9 2115.0 0.908 20.5 2116.0 0.906 21.1 2117.0 0.903 21.6 2118.0 0.900 22.2 2119.0 0.897 22.8 2120.0 0.894 23.4 2121.0 0.891 24.0 2122.0 0.888 24.6 2123.0 0.884 25.2 2124.0 0.881 25.8 2125.0 0.877 26.4 2126.0 0.874 27.1 2127.0 0.870 27.7 2128.0 0.866 28.3 2129.0 0.862 29.0 2130.0 0.858 29.6