| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 19:16:03 |
| WDS: | I666 | WDS ID/Discoverer |
| P: | 212.900 | Orbital period (years) |
| a: | 0.475 | Semi-major axis (arcseconds) |
| i: | 57.4 | Inclination (degrees) |
| Ω: | 169.7 | Longitude of ascending node (degrees) |
| T: | 1987.430 | Epoch of periastron passage (year) |
| e: | 0.752 | Eccentricity |
| ω: | 2.9 | Longitude of periastron (degrees) |
| Start-Year: | 1919.0 | Year |
| End-Year: | 2131.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 204503.37-234538.3 | Epoch-2000 right ascension and declination |
| WDS-ID: | 20451-2346 | WDS designation |
| Discoverer Code: | I666 | Discover designation and components |
| ADS number: | 14224 | Aitken Double Star catalog |
| HD number: | 197539 | HD catalog number |
| Hipparcos number: | . | Hipparcos catalog number |
| V1: | 8.9 | Magnitude of the primary |
| V2: | 9.1 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2018 | Date of last observation |
| Orbit grade: | 3 | 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 0.518 332.9 ------------------------- 1919.0 0.732 359.4 1920.0 0.727 359.7 1921.0 0.721 359.9 1922.0 0.716 0.2 1923.0 0.710 0.4 1924.0 0.704 0.7 1925.0 0.699 1.0 1926.0 0.692 1.3 1927.0 0.686 1.6 1928.0 0.680 1.8 1929.0 0.673 2.1 1930.0 0.666 2.4 1931.0 0.660 2.7 1932.0 0.653 3.1 1933.0 0.645 3.4 1934.0 0.638 3.7 1935.0 0.630 4.1 1936.0 0.623 4.4 1937.0 0.615 4.8 1938.0 0.607 5.1 1939.0 0.599 5.5 1940.0 0.590 5.9 1941.0 0.582 6.3 1942.0 0.573 6.7 1943.0 0.564 7.1 1944.0 0.555 7.5 1945.0 0.545 8.0 1946.0 0.536 8.4 1947.0 0.526 8.9 1948.0 0.516 9.4 1949.0 0.506 9.9 1950.0 0.496 10.5 1951.0 0.485 11.0 1952.0 0.475 11.6 1953.0 0.464 12.2 1954.0 0.452 12.9 1955.0 0.441 13.6 1956.0 0.429 14.3 1957.0 0.418 15.0 1958.0 0.406 15.8 1959.0 0.393 16.7 1960.0 0.381 17.6 1961.0 0.368 18.6 1962.0 0.355 19.6 1963.0 0.342 20.7 1964.0 0.328 21.9 1965.0 0.314 23.2 1966.0 0.300 24.7 1967.0 0.286 26.2 1968.0 0.272 28.0 1969.0 0.257 29.9 1970.0 0.243 32.1 1971.0 0.228 34.5 1972.0 0.213 37.3 1973.0 0.198 40.6 1974.0 0.183 44.3 1975.0 0.169 48.7 1976.0 0.154 53.9 1977.0 0.141 60.1 1978.0 0.129 67.6 1979.0 0.119 76.4 1980.0 0.110 86.8 1981.0 0.105 98.6 1982.0 0.103 111.1 1983.0 0.104 123.7 1984.0 0.108 135.8 1985.0 0.113 146.9 1986.0 0.116 157.2 1987.0 0.118 167.1 1988.0 0.116 176.9 1989.0 0.112 187.3 1990.0 0.106 198.6 1991.0 0.101 211.4 1992.0 0.098 225.2 1993.0 0.098 239.5 1994.0 0.103 253.0 1995.0 0.111 264.8 1996.0 0.123 274.8 1997.0 0.136 283.0 1998.0 0.150 289.6 1999.0 0.166 295.0 2000.0 0.182 299.5 2001.0 0.198 303.3 2002.0 0.214 306.5 2003.0 0.230 309.3 2004.0 0.246 311.7 2005.0 0.261 313.8 2006.0 0.277 315.7 2007.0 0.292 317.3 2008.0 0.307 318.8 2009.0 0.321 320.2 2010.0 0.335 321.5 2011.0 0.349 322.6 2012.0 0.363 323.7 2013.0 0.377 324.7 2014.0 0.390 325.6 2015.0 0.403 326.5 2016.0 0.415 327.3 2017.0 0.428 328.1 2018.0 0.440 328.8 2019.0 0.452 329.5 2020.0 0.463 330.1 2021.0 0.475 330.7 2022.0 0.486 331.3 2023.0 0.497 331.9 2024.0 0.507 332.4 2025.0 0.518 332.9 2026.0 0.528 333.4 2027.0 0.538 333.9 2028.0 0.548 334.3 2029.0 0.557 334.8 2030.0 0.567 335.2 2031.0 0.576 335.6 2032.0 0.585 336.0 2033.0 0.594 336.4 2034.0 0.602 336.8 2035.0 0.611 337.2 2036.0 0.619 337.5 2037.0 0.627 337.9 2038.0 0.634 338.2 2039.0 0.642 338.6 2040.0 0.650 338.9 2041.0 0.657 339.2 2042.0 0.664 339.5 2043.0 0.671 339.8 2044.0 0.678 340.1 2045.0 0.684 340.4 2046.0 0.691 340.7 2047.0 0.697 341.0 2048.0 0.703 341.3 2049.0 0.709 341.5 2050.0 0.715 341.8 2051.0 0.720 342.1 2052.0 0.726 342.3 2053.0 0.731 342.6 2054.0 0.736 342.8 2055.0 0.742 343.1 2056.0 0.746 343.3 2057.0 0.751 343.6 2058.0 0.756 343.8 2059.0 0.760 344.0 2060.0 0.764 344.3 2061.0 0.769 344.5 2062.0 0.773 344.7 2063.0 0.777 344.9 2064.0 0.780 345.2 2065.0 0.784 345.4 2066.0 0.787 345.6 2067.0 0.791 345.8 2068.0 0.794 346.0 2069.0 0.797 346.3 2070.0 0.800 346.5 2071.0 0.803 346.7 2072.0 0.805 346.9 2073.0 0.808 347.1 2074.0 0.810 347.3 2075.0 0.813 347.5 2076.0 0.815 347.7 2077.0 0.817 347.9 2078.0 0.819 348.1 2079.0 0.820 348.3 2080.0 0.822 348.5 2081.0 0.823 348.7 2082.0 0.825 348.9 2083.0 0.826 349.1 2084.0 0.827 349.3 2085.0 0.828 349.5 2086.0 0.829 349.7 2087.0 0.830 349.9 2088.0 0.830 350.1 2089.0 0.831 350.3 2090.0 0.831 350.5 2091.0 0.831 350.7 2092.0 0.832 350.9 2093.0 0.832 351.1 2094.0 0.831 351.3 2095.0 0.831 351.5 2096.0 0.831 351.7 2097.0 0.830 351.9 2098.0 0.830 352.1 2099.0 0.829 352.3 2100.0 0.828 352.5 2101.0 0.827 352.7 2102.0 0.826 352.9 2103.0 0.825 353.1 2104.0 0.823 353.3 2105.0 0.822 353.5 2106.0 0.820 353.7 2107.0 0.818 353.9 2108.0 0.816 354.1 2109.0 0.814 354.3 2110.0 0.812 354.5 2111.0 0.810 354.7 2112.0 0.807 354.9 2113.0 0.805 355.1 2114.0 0.802 355.3 2115.0 0.799 355.5 2116.0 0.797 355.7 2117.0 0.793 355.9 2118.0 0.790 356.2 2119.0 0.787 356.4 2120.0 0.784 356.6 2121.0 0.780 356.8 2122.0 0.776 357.0 2123.0 0.772 357.3 2124.0 0.768 357.5 2125.0 0.764 357.7 2126.0 0.760 358.0 2127.0 0.756 358.2 2128.0 0.751 358.4 2129.0 0.746 358.7 2130.0 0.742 358.9