| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 19:20:55 |
| WDS: | BU271AB | WDS ID/Discoverer |
| P: | 189.100 | Orbital period (years) |
| a: | 2.159 | Semi-major axis (arcseconds) |
| i: | 65.2 | Inclination (degrees) |
| Ω: | 244.7 | Longitude of ascending node (degrees) |
| T: | 1841.480 | Epoch of periastron passage (year) |
| e: | 0.631 | Eccentricity |
| ω: | 190.5 | Longitude of periastron (degrees) |
| Start-Year: | 1931.0 | Year |
| End-Year: | 2119.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 211945.62-262110.3 | Epoch-2000 right ascension and declination |
| WDS-ID: | 21198-2621 | WDS designation |
| Discoverer Code: | BU271AB | Discover designation and components |
| ADS number: | 14847 | Aitken Double Star catalog |
| HD number: | 202940 | HD catalog number |
| Hipparcos number: | 105312 | Hipparcos catalog number |
| V1: | 6.73 | Magnitude of the primary |
| V2: | 9.76 | Magnitude of the secondary |
| Equinox: | Equinox | |
| Date: | 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)
Year Sep[“] PA[°] --------------------------------------------- 2025.0 0.741 43.2 ------------------------- 1931.0 3.488 247.9 1932.0 3.487 248.2 1933.0 3.485 248.4 1934.0 3.481 248.7 1935.0 3.478 248.9 1936.0 3.473 249.1 1937.0 3.467 249.4 1938.0 3.461 249.6 1939.0 3.454 249.9 1940.0 3.446 250.1 1941.0 3.437 250.3 1942.0 3.428 250.6 1943.0 3.417 250.8 1944.0 3.406 251.1 1945.0 3.394 251.3 1946.0 3.381 251.6 1947.0 3.367 251.8 1948.0 3.353 252.1 1949.0 3.338 252.4 1950.0 3.322 252.6 1951.0 3.305 252.9 1952.0 3.287 253.1 1953.0 3.268 253.4 1954.0 3.249 253.7 1955.0 3.229 254.0 1956.0 3.208 254.2 1957.0 3.186 254.5 1958.0 3.163 254.8 1959.0 3.140 255.1 1960.0 3.115 255.4 1961.0 3.090 255.7 1962.0 3.064 256.0 1963.0 3.037 256.3 1964.0 3.010 256.6 1965.0 2.981 256.9 1966.0 2.952 257.3 1967.0 2.921 257.6 1968.0 2.890 258.0 1969.0 2.859 258.3 1970.0 2.826 258.7 1971.0 2.792 259.0 1972.0 2.758 259.4 1973.0 2.722 259.8 1974.0 2.686 260.2 1975.0 2.649 260.6 1976.0 2.611 261.0 1977.0 2.572 261.4 1978.0 2.533 261.9 1979.0 2.492 262.3 1980.0 2.451 262.8 1981.0 2.408 263.3 1982.0 2.365 263.8 1983.0 2.321 264.3 1984.0 2.276 264.9 1985.0 2.230 265.4 1986.0 2.183 266.0 1987.0 2.136 266.7 1988.0 2.087 267.3 1989.0 2.038 268.0 1990.0 1.987 268.7 1991.0 1.936 269.4 1992.0 1.884 270.2 1993.0 1.831 271.1 1994.0 1.778 272.0 1995.0 1.723 272.9 1996.0 1.668 273.9 1997.0 1.612 275.0 1998.0 1.555 276.1 1999.0 1.498 277.4 2000.0 1.440 278.7 2001.0 1.381 280.2 2002.0 1.322 281.7 2003.0 1.263 283.5 2004.0 1.203 285.4 2005.0 1.144 287.5 2006.0 1.084 289.8 2007.0 1.025 292.4 2008.0 0.967 295.3 2009.0 0.910 298.6 2010.0 0.855 302.3 2011.0 0.802 306.5 2012.0 0.753 311.3 2013.0 0.708 316.7 2014.0 0.668 322.8 2015.0 0.634 329.7 2016.0 0.609 337.2 2017.0 0.592 345.2 2018.0 0.585 353.6 2019.0 0.588 2.0 2020.0 0.601 10.2 2021.0 0.621 17.9 2022.0 0.647 25.1 2023.0 0.678 31.7 2024.0 0.710 37.7 2025.0 0.741 43.2 2026.0 0.769 48.3 2027.0 0.790 53.0 2028.0 0.803 57.5 2029.0 0.806 62.0 2030.0 0.797 66.5 2031.0 0.775 71.1 2032.0 0.742 76.1 2033.0 0.700 81.7 2034.0 0.651 88.0 2035.0 0.601 95.4 2036.0 0.552 104.1 2037.0 0.512 114.4 2038.0 0.484 126.1 2039.0 0.474 138.8 2040.0 0.483 151.5 2041.0 0.511 163.2 2042.0 0.555 173.5 2043.0 0.611 182.0 2044.0 0.675 189.0 2045.0 0.745 194.8 2046.0 0.817 199.5 2047.0 0.892 203.5 2048.0 0.968 206.8 2049.0 1.044 209.7 2050.0 1.120 212.1 2051.0 1.195 214.3 2052.0 1.270 216.2 2053.0 1.343 217.9 2054.0 1.415 219.4 2055.0 1.486 220.8 2056.0 1.555 222.0 2057.0 1.623 223.2 2058.0 1.690 224.2 2059.0 1.755 225.2 2060.0 1.819 226.1 2061.0 1.881 226.9 2062.0 1.942 227.7 2063.0 2.001 228.5 2064.0 2.059 229.2 2065.0 2.115 229.8 2066.0 2.171 230.5 2067.0 2.224 231.1 2068.0 2.277 231.6 2069.0 2.328 232.2 2070.0 2.377 232.7 2071.0 2.426 233.2 2072.0 2.473 233.7 2073.0 2.519 234.2 2074.0 2.564 234.6 2075.0 2.607 235.0 2076.0 2.649 235.4 2077.0 2.690 235.9 2078.0 2.730 236.2 2079.0 2.769 236.6 2080.0 2.806 237.0 2081.0 2.842 237.4 2082.0 2.878 237.7 2083.0 2.912 238.1 2084.0 2.945 238.4 2085.0 2.977 238.7 2086.0 3.008 239.1 2087.0 3.038 239.4 2088.0 3.066 239.7 2089.0 3.094 240.0 2090.0 3.121 240.3 2091.0 3.147 240.6 2092.0 3.171 240.9 2093.0 3.195 241.1 2094.0 3.218 241.4 2095.0 3.239 241.7 2096.0 3.260 242.0 2097.0 3.280 242.2 2098.0 3.299 242.5 2099.0 3.317 242.8 2100.0 3.334 243.0 2101.0 3.350 243.3 2102.0 3.365 243.6 2103.0 3.380 243.8 2104.0 3.393 244.1 2105.0 3.406 244.3 2106.0 3.417 244.6 2107.0 3.428 244.8 2108.0 3.438 245.1 2109.0 3.447 245.3 2110.0 3.455 245.5 2111.0 3.462 245.8 2112.0 3.468 246.0 2113.0 3.474 246.3 2114.0 3.478 246.5 2115.0 3.482 246.7 2116.0 3.485 247.0 2117.0 3.487 247.2 2118.0 3.488 247.4