| WDS: | BU255 | WDS ID/Discoverer |
| P: | 245.000 | Orbital period (years) |
| a: | 0.661 | Semi-major axis (arcseconds) |
| i: | 116.0 | Inclination (degrees) |
| Ω: | 166.1 | Longitude of ascending node (degrees) |
| T: | 2067.200 | Epoch of periastron passage (year) |
| e: | 0.96 | Eccentricity |
| ω: | 265.4 | Longitude of periastron (degrees) |
| Start-Year: | 1902.5 | Year |
| End-Year: | 2147.5 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for BU255 |
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| Position: | 001150.13+282524.0 | Epoch-2000 right ascension and declination |
| WDS-ID: | 00118+2825 | WDS designation |
| Discoverer Code: | BU255 | Discover designation and components |
| ADS number: | 147 | Aitken Double Star catalog |
| HD number: | 744 | HD catalog number |
| Hipparcos number: | 956 | Hipparcos catalog number |
| V1: | 7.88 | Magnitude of the primary |
| V2: | 8.97 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2008 | Date of last observation |
| Orbit grade: | 4 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | Flags | |
| Ephemerides: | Ephemerides | |
| Code: | Zir2015a | 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 0.401 61.33 -------------------------- 1902.50 0.553 96.72 1903.50 0.554 96.46 1904.50 0.556 96.20 1905.50 0.557 95.95 1906.50 0.558 95.70 1907.50 0.560 95.44 1908.50 0.561 95.19 1909.50 0.562 94.94 1910.50 0.563 94.69 1911.50 0.564 94.45 1912.50 0.565 94.20 1913.50 0.566 93.95 1914.50 0.567 93.71 1915.50 0.568 93.46 1916.50 0.569 93.22 1917.50 0.570 92.98 1918.50 0.571 92.73 1919.50 0.571 92.49 1920.50 0.572 92.25 1921.50 0.573 92.01 1922.50 0.573 91.77 1923.50 0.574 91.53 1924.50 0.574 91.29 1925.50 0.575 91.05 1926.50 0.575 90.82 1927.50 0.576 90.58 1928.50 0.576 90.34 1929.50 0.576 90.10 1930.50 0.576 89.86 1931.50 0.577 89.63 1932.50 0.577 89.39 1933.50 0.577 89.15 1934.50 0.577 88.92 1935.50 0.577 88.68 1936.50 0.577 88.44 1937.50 0.577 88.21 1938.50 0.577 87.97 1939.50 0.577 87.73 1940.50 0.577 87.50 1941.50 0.576 87.26 1942.50 0.576 87.02 1943.50 0.576 86.79 1944.50 0.576 86.55 1945.50 0.575 86.31 1946.50 0.575 86.07 1947.50 0.574 85.83 1948.50 0.574 85.59 1949.50 0.573 85.35 1950.50 0.573 85.11 1951.50 0.572 84.87 1952.50 0.572 84.63 1953.50 0.571 84.39 1954.50 0.570 84.15 1955.50 0.569 83.91 1956.50 0.569 83.66 1957.50 0.568 83.42 1958.50 0.567 83.17 1959.50 0.566 82.93 1960.50 0.565 82.68 1961.50 0.564 82.44 1962.50 0.563 82.19 1963.50 0.562 81.94 1964.50 0.561 81.69 1965.50 0.560 81.44 1966.50 0.558 81.18 1967.50 0.557 80.93 1968.50 0.556 80.68 1969.50 0.554 80.42 1970.50 0.553 80.16 1971.50 0.552 79.91 1972.50 0.550 79.65 1973.50 0.549 79.38 1974.50 0.547 79.12 1975.50 0.546 78.86 1976.50 0.544 78.59 1977.50 0.542 78.33 1978.50 0.541 78.06 1979.50 0.539 77.79 1980.50 0.537 77.51 1981.50 0.535 77.24 1982.50 0.533 76.96 1983.50 0.531 76.69 1984.50 0.529 76.41 1985.50 0.527 76.12 1986.50 0.525 75.84 1987.50 0.523 75.55 1988.50 0.521 75.26 1989.50 0.519 74.97 1990.50 0.517 74.68 1991.50 0.514 74.38 1992.50 0.512 74.08 1993.50 0.510 73.78 1994.50 0.507 73.47 1995.50 0.505 73.17 1996.50 0.502 72.86 1997.50 0.500 72.54 1998.50 0.497 72.22 1999.50 0.494 71.90 2000.50 0.492 71.58 2001.50 0.489 71.25 2002.50 0.486 70.92 2003.50 0.483 70.58 2004.50 0.480 70.24 2005.50 0.477 69.90 2006.50 0.474 69.55 2007.50 0.471 69.20 2008.50 0.468 68.84 2009.50 0.465 68.48 2010.50 0.461 68.11 2011.50 0.458 67.74 2012.50 0.455 67.36 2013.50 0.451 66.98 2014.50 0.448 66.58 2015.50 0.444 66.19 2016.50 0.441 65.79 2017.50 0.437 65.38 2018.50 0.433 64.96 2019.50 0.429 64.54 2020.50 0.425 64.11 2021.50 0.421 63.67 2022.50 0.417 63.22 2023.50 0.413 62.76 2024.50 0.409 62.30 2025.50 0.405 61.82 2026.50 0.401 61.33 2027.50 0.396 60.84 2028.50 0.392 60.33 2029.50 0.387 59.81 2030.50 0.383 59.28 2031.50 0.378 58.73 2032.50 0.373 58.17 2033.50 0.368 57.60 2034.50 0.363 57.01 2035.50 0.358 56.40 2036.50 0.353 55.78 2037.50 0.347 55.14 2038.50 0.342 54.47 2039.50 0.336 53.79 2040.50 0.331 53.08 2041.50 0.325 52.35 2042.50 0.319 51.59 2043.50 0.313 50.80 2044.50 0.307 49.98 2045.50 0.300 49.12 2046.50 0.294 48.23 2047.50 0.287 47.29 2048.50 0.280 46.32 2049.50 0.273 45.29 2050.50 0.266 44.20 2051.50 0.258 43.05 2052.50 0.251 41.84 2053.50 0.242 40.54 2054.50 0.234 39.15 2055.50 0.225 37.66 2056.50 0.216 36.04 2057.50 0.207 34.28 2058.50 0.197 32.34 2059.50 0.186 30.19 2060.50 0.175 27.76 2061.50 0.162 24.98 2062.50 0.149 21.71 2063.50 0.133 17.74 2064.50 0.115 12.63 2065.50 0.092 5.30 2066.50 0.058 351.17 2067.50 0.031 181.63 2068.50 0.086 155.94 2069.50 0.118 148.31 2070.50 0.142 143.63 2071.50 0.162 140.22 2072.50 0.179 137.51 2073.50 0.195 135.26 2074.50 0.209 133.33 2075.50 0.222 131.64 2076.50 0.235 130.13 2077.50 0.246 128.77 2078.50 0.257 127.52 2079.50 0.267 126.37 2080.50 0.277 125.31 2081.50 0.286 124.31 2082.50 0.295 123.38 2083.50 0.304 122.50 2084.50 0.312 121.67 2085.50 0.320 120.88 2086.50 0.327 120.12 2087.50 0.335 119.40 2088.50 0.342 118.72 2089.50 0.349 118.05 2090.50 0.355 117.42 2091.50 0.362 116.81 2092.50 0.368 116.22 2093.50 0.374 115.64 2094.50 0.380 115.09 2095.50 0.386 114.55 2096.50 0.392 114.03 2097.50 0.397 113.52 2098.50 0.402 113.03 2099.50 0.408 112.55 2100.50 0.413 112.08 2101.50 0.418 111.63 2102.50 0.422 111.18 2103.50 0.427 110.74 2104.50 0.432 110.32 2105.50 0.436 109.90 2106.50 0.441 109.49 2107.50 0.445 109.09 2108.50 0.449 108.69 2109.50 0.453 108.30 2110.50 0.457 107.92 2111.50 0.461 107.55 2112.50 0.465 107.18 2113.50 0.468 106.82 2114.50 0.472 106.46 2115.50 0.476 106.11 2116.50 0.479 105.77 2117.50 0.482 105.43 2118.50 0.486 105.09 2119.50 0.489 104.76 2120.50 0.492 104.43 2121.50 0.495 104.11 2122.50 0.498 103.79 2123.50 0.501 103.47 2124.50 0.504 103.16 2125.50 0.507 102.85 2126.50 0.509 102.55 2127.50 0.512 102.24 2128.50 0.515 101.95 2129.50 0.517 101.65 2130.50 0.520 101.36 2131.50 0.522 101.07 2132.50 0.524 100.78 2133.50 0.527 100.49 2134.50 0.529 100.21 2135.50 0.531 99.93 2136.50 0.533 99.65 2137.50 0.535 99.38 2138.50 0.537 99.10 2139.50 0.539 98.83 2140.50 0.541 98.56 2141.50 0.543 98.29 2142.50 0.545 98.02 2143.50 0.546 97.76 2144.50 0.548 97.50 2145.50 0.550 97.24 2146.50 0.551 96.98
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 14:36:28 |