| WDS: | BU271AB | WDS ID/Discoverer |
| P: | 183.350 | Orbital period (years) |
| a: | 2.1587 | Semi-major axis (arcseconds) |
| i: | 65.3 | Inclination (degrees) |
| Ω: | 243.0 | Longitude of ascending node (degrees) |
| T: | 1846.640 | Epoch of periastron passage (year) |
| e: | 0.6604 | Eccentricity |
| ω: | 196.0 | Longitude of periastron (degrees) |
| Start-Year: | 1933.325 | Year |
| End-Year: | 2116.675 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for BU271AB |
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| 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: | 2000 | Equinox |
| Date: | 2023 | Date of last observation |
| Orbit grade: | 3 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | n | Flags |
| Ephemerides: | Ephemerides | |
| Code: | Tok2024a | Reference |
-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --
| Green plus signs: | Visual (micrometric) measures |
| Violet asterisks: | Photographic measures |
| Blue symbols: | Various interferometric techniques |
| Dot-dash line: | Indicates the line of nodes |
Year Sep[“] PA[°] --------------------------------------------- 2026.50 0.750 51.72 -------------------------- 1933.33 3.497 248.65 1934.33 3.494 248.89 1935.33 3.489 249.12 1936.33 3.483 249.36 1937.33 3.477 249.60 1938.33 3.470 249.84 1939.33 3.462 250.07 1940.33 3.453 250.31 1941.33 3.444 250.56 1942.33 3.433 250.80 1943.33 3.422 251.04 1944.33 3.410 251.29 1945.33 3.397 251.54 1946.33 3.383 251.79 1947.33 3.369 252.04 1948.33 3.353 252.29 1949.33 3.337 252.55 1950.33 3.320 252.81 1951.33 3.302 253.07 1952.33 3.284 253.33 1953.33 3.264 253.60 1954.33 3.244 253.87 1955.33 3.223 254.15 1956.33 3.201 254.43 1957.33 3.178 254.71 1958.33 3.155 255.00 1959.33 3.130 255.29 1960.33 3.105 255.58 1961.33 3.079 255.88 1962.33 3.052 256.19 1963.33 3.025 256.50 1964.33 2.996 256.82 1965.33 2.967 257.14 1966.33 2.937 257.47 1967.33 2.906 257.80 1968.33 2.874 258.15 1969.33 2.841 258.50 1970.33 2.808 258.86 1971.33 2.774 259.23 1972.33 2.739 259.61 1973.33 2.703 259.99 1974.33 2.666 260.39 1975.33 2.628 260.80 1976.33 2.590 261.22 1977.33 2.550 261.66 1978.33 2.510 262.11 1979.33 2.469 262.57 1980.33 2.427 263.05 1981.33 2.384 263.55 1982.33 2.341 264.06 1983.33 2.296 264.59 1984.33 2.251 265.15 1985.33 2.204 265.73 1986.33 2.157 266.33 1987.33 2.109 266.96 1988.33 2.061 267.62 1989.33 2.011 268.32 1990.33 1.961 269.04 1991.33 1.909 269.81 1992.33 1.857 270.62 1993.33 1.804 271.48 1994.33 1.751 272.39 1995.33 1.696 273.35 1996.33 1.641 274.38 1997.33 1.585 275.49 1998.33 1.528 276.67 1999.33 1.471 277.95 2000.33 1.413 279.33 2001.33 1.355 280.83 2002.33 1.297 282.46 2003.33 1.238 284.25 2004.33 1.179 286.22 2005.33 1.120 288.39 2006.33 1.061 290.81 2007.33 1.003 293.51 2008.33 0.946 296.53 2009.33 0.890 299.94 2010.33 0.836 303.80 2011.33 0.785 308.17 2012.33 0.737 313.14 2013.33 0.694 318.75 2014.33 0.656 325.07 2015.33 0.625 332.08 2016.33 0.602 339.73 2017.33 0.588 347.85 2018.33 0.584 356.23 2019.33 0.589 4.60 2020.33 0.603 12.70 2021.33 0.624 20.35 2022.33 0.649 27.45 2023.33 0.677 33.98 2024.33 0.705 39.99 2025.33 0.729 45.56 2026.33 0.747 50.82 2027.33 0.755 55.90 2028.33 0.751 60.94 2029.33 0.731 66.16 2030.33 0.697 71.78 2031.33 0.649 78.11 2032.33 0.592 85.57 2033.33 0.532 94.68 2034.33 0.477 106.02 2035.33 0.436 119.90 2036.33 0.418 135.79 2037.33 0.429 151.98 2038.33 0.466 166.49 2039.33 0.523 178.35 2040.33 0.594 187.61 2041.33 0.674 194.79 2042.33 0.758 200.41 2043.33 0.844 204.90 2044.33 0.931 208.56 2045.33 1.017 211.59 2046.33 1.103 214.15 2047.33 1.187 216.34 2048.32 1.270 218.24 2049.32 1.351 219.92 2050.32 1.430 221.40 2051.32 1.508 222.73 2052.32 1.583 223.93 2053.32 1.657 225.03 2054.32 1.728 226.03 2055.32 1.798 226.95 2056.32 1.866 227.81 2057.32 1.932 228.61 2058.32 1.996 229.35 2059.32 2.058 230.05 2060.32 2.119 230.71 2061.32 2.178 231.33 2062.32 2.235 231.92 2063.32 2.291 232.48 2064.32 2.345 233.01 2065.32 2.398 233.52 2066.32 2.449 234.01 2067.32 2.498 234.48 2068.32 2.546 234.93 2069.32 2.593 235.37 2070.32 2.638 235.79 2071.32 2.682 236.20 2072.32 2.724 236.59 2073.32 2.765 236.97 2074.32 2.805 237.34 2075.32 2.843 237.70 2076.32 2.880 238.05 2077.32 2.916 238.39 2078.32 2.951 238.73 2079.32 2.985 239.05 2080.32 3.017 239.37 2081.32 3.048 239.68 2082.32 3.078 239.99 2083.32 3.107 240.29 2084.32 3.135 240.58 2085.32 3.161 240.87 2086.32 3.187 241.16 2087.32 3.211 241.44 2088.32 3.235 241.71 2089.32 3.257 241.99 2090.32 3.278 242.26 2091.32 3.299 242.52 2092.32 3.318 242.78 2093.32 3.336 243.04 2094.32 3.353 243.30 2095.32 3.370 243.55 2096.32 3.385 243.81 2097.32 3.399 244.05 2098.32 3.413 244.30 2099.32 3.425 244.55 2100.32 3.437 244.79 2101.32 3.447 245.03 2102.32 3.457 245.28 2103.32 3.466 245.51 2104.32 3.474 245.75 2105.32 3.480 245.99 2106.32 3.486 246.23 2107.32 3.492 246.46 2108.32 3.496 246.70 2109.32 3.499 246.93 2110.32 3.502 247.17 2111.32 3.503 247.40 2112.32 3.504 247.64 2113.32 3.504 247.87 2114.32 3.503 248.10 2115.32 3.501 248.34 2116.32 3.499 248.57
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 18:24:52 |