| WDS: | A2731AB | WDS ID/Discoverer |
| P: | 247.168 | Orbital period (years) |
| a: | 0.83911 | Semi-major axis (arcseconds) |
| i: | 28.959 | Inclination (degrees) |
| Ω: | 100.965 | Longitude of ascending node (degrees) |
| T: | 1936.959 | Epoch of periastron passage (year) |
| e: | 0.85733 | Eccentricity |
| ω: | 152.292 | Longitude of periastron (degrees) |
| Start-Year: | 1901.416 | Year |
| End-Year: | 2148.584 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for A2731AB |
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| Position: | 064839.38+073720.4 | Epoch-2000 right ascension and declination |
| WDS-ID: | 06487+0737 | WDS designation |
| Discoverer Code: | A2731AB | Discover designation and components |
| ADS number: | 5469 | Aitken Double Star catalog |
| HD number: | 49409 | HD catalog number |
| Hipparcos number: | 32650 | Hipparcos catalog number |
| V1: | 8.24 | Magnitude of the primary |
| V2: | 9.53 | Magnitude of the secondary |
| Equinox: | Equinox | |
| Date: | 2015 | Date of last observation |
| Orbit grade: | 4 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | n | Flags |
| Ephemerides: | Ephemerides | |
| Code: | Izm2019 | 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 1.420 69.12 -------------------------- 1901.42 0.965 99.58 1902.42 0.950 100.09 1903.42 0.934 100.61 1904.42 0.917 101.15 1905.42 0.900 101.71 1906.42 0.883 102.29 1907.42 0.866 102.89 1908.42 0.848 103.52 1909.42 0.829 104.18 1910.42 0.810 104.87 1911.42 0.791 105.59 1912.42 0.771 106.34 1913.42 0.751 107.14 1914.42 0.730 107.98 1915.42 0.709 108.88 1916.42 0.687 109.83 1917.42 0.664 110.84 1918.42 0.641 111.92 1919.42 0.617 113.09 1920.42 0.592 114.36 1921.42 0.567 115.73 1922.42 0.541 117.24 1923.42 0.514 118.90 1924.42 0.486 120.74 1925.42 0.457 122.82 1926.42 0.428 125.18 1927.42 0.397 127.90 1928.42 0.364 131.10 1929.42 0.331 134.92 1930.42 0.296 139.63 1931.42 0.261 145.60 1932.42 0.224 153.50 1933.42 0.188 164.50 1934.42 0.153 180.63 1935.42 0.126 204.80 1936.42 0.115 237.44 1937.42 0.122 271.23 1938.42 0.139 298.79 1939.42 0.162 319.33 1940.42 0.188 334.46 1941.42 0.216 345.80 1942.42 0.244 354.55 1943.42 0.273 1.48 1944.42 0.301 7.10 1945.42 0.329 11.77 1946.42 0.356 15.72 1947.42 0.382 19.12 1948.42 0.408 22.07 1949.42 0.434 24.68 1950.42 0.458 27.01 1951.42 0.483 29.09 1952.42 0.506 30.98 1953.42 0.529 32.71 1954.42 0.552 34.29 1955.42 0.574 35.74 1956.42 0.596 37.10 1957.42 0.617 38.35 1958.42 0.637 39.53 1959.42 0.658 40.63 1960.42 0.678 41.67 1961.42 0.697 42.64 1962.42 0.716 43.57 1963.42 0.735 44.45 1964.42 0.753 45.28 1965.42 0.771 46.08 1966.42 0.789 46.84 1967.42 0.806 47.56 1968.42 0.823 48.26 1969.42 0.839 48.93 1970.42 0.856 49.57 1971.42 0.872 50.19 1972.42 0.887 50.79 1973.42 0.903 51.37 1974.42 0.918 51.92 1975.42 0.933 52.46 1976.42 0.948 52.98 1977.42 0.962 53.49 1978.42 0.976 53.98 1979.42 0.990 54.46 1980.42 1.003 54.93 1981.42 1.017 55.38 1982.42 1.030 55.82 1983.42 1.043 56.25 1984.42 1.056 56.67 1985.42 1.068 57.08 1986.42 1.080 57.48 1987.42 1.092 57.87 1988.42 1.104 58.25 1989.42 1.116 58.63 1990.42 1.127 59.00 1991.42 1.138 59.36 1992.42 1.149 59.71 1993.42 1.160 60.06 1994.42 1.171 60.40 1995.42 1.181 60.73 1996.42 1.191 61.06 1997.42 1.201 61.38 1998.42 1.211 61.70 1999.42 1.221 62.01 2000.42 1.230 62.32 2001.42 1.240 62.62 2002.42 1.249 62.92 2003.42 1.258 63.21 2004.42 1.267 63.50 2005.42 1.275 63.79 2006.42 1.284 64.07 2007.42 1.292 64.35 2008.42 1.300 64.62 2009.42 1.308 64.90 2010.42 1.316 65.16 2011.42 1.324 65.43 2012.42 1.331 65.69 2013.42 1.338 65.95 2014.42 1.345 66.21 2015.42 1.352 66.46 2016.42 1.359 66.71 2017.42 1.366 66.96 2018.42 1.373 67.21 2019.42 1.379 67.45 2020.42 1.385 67.69 2021.42 1.391 67.93 2022.42 1.397 68.17 2023.42 1.403 68.41 2024.42 1.409 68.64 2025.42 1.414 68.87 2026.42 1.419 69.10 2027.42 1.425 69.33 2028.42 1.430 69.56 2029.42 1.435 69.78 2030.42 1.439 70.01 2031.42 1.444 70.23 2032.42 1.449 70.45 2033.42 1.453 70.67 2034.42 1.457 70.89 2035.42 1.461 71.10 2036.42 1.465 71.32 2037.42 1.469 71.53 2038.42 1.473 71.75 2039.42 1.476 71.96 2040.42 1.479 72.17 2041.42 1.483 72.38 2042.42 1.486 72.59 2043.42 1.489 72.80 2044.42 1.492 73.01 2045.42 1.494 73.22 2046.42 1.497 73.42 2047.42 1.499 73.63 2048.42 1.502 73.83 2049.42 1.504 74.04 2050.42 1.506 74.24 2051.42 1.508 74.45 2052.42 1.509 74.65 2053.42 1.511 74.85 2054.42 1.512 75.05 2055.42 1.514 75.26 2056.42 1.515 75.46 2057.42 1.516 75.66 2058.42 1.517 75.86 2059.42 1.518 76.06 2060.42 1.518 76.26 2061.42 1.519 76.46 2062.42 1.519 76.66 2063.42 1.520 76.86 2064.42 1.520 77.06 2065.42 1.520 77.26 2066.42 1.520 77.46 2067.42 1.519 77.66 2068.42 1.519 77.86 2069.42 1.518 78.06 2070.42 1.518 78.26 2071.42 1.517 78.46 2072.42 1.516 78.66 2073.42 1.515 78.86 2074.42 1.514 79.07 2075.42 1.512 79.27 2076.42 1.511 79.47 2077.42 1.509 79.67 2078.42 1.507 79.87 2079.42 1.505 80.08 2080.42 1.503 80.28 2081.42 1.501 80.49 2082.42 1.499 80.69 2083.42 1.496 80.90 2084.42 1.494 81.11 2085.42 1.491 81.31 2086.42 1.488 81.52 2087.42 1.485 81.73 2088.42 1.482 81.94 2089.42 1.478 82.15 2090.42 1.475 82.36 2091.42 1.471 82.58 2092.42 1.467 82.79 2093.42 1.463 83.00 2094.42 1.459 83.22 2095.42 1.455 83.44 2096.42 1.451 83.66 2097.42 1.446 83.88 2098.42 1.441 84.10 2099.42 1.437 84.32 2100.42 1.432 84.55 2101.42 1.426 84.77 2102.42 1.421 85.00 2103.42 1.416 85.23 2104.42 1.410 85.46 2105.42 1.404 85.69 2106.42 1.398 85.93 2107.42 1.392 86.17 2108.42 1.386 86.41 2109.42 1.379 86.65 2110.42 1.373 86.89 2111.42 1.366 87.14 2112.42 1.359 87.39 2113.42 1.352 87.64 2114.42 1.344 87.89 2115.42 1.337 88.15 2116.42 1.329 88.41 2117.42 1.321 88.67 2118.42 1.313 88.94 2119.42 1.305 89.21 2120.42 1.296 89.48 2121.42 1.288 89.76 2122.42 1.279 90.04 2123.42 1.270 90.32 2124.42 1.261 90.61 2125.42 1.251 90.91 2126.42 1.241 91.20 2127.42 1.232 91.51 2128.42 1.221 91.81 2129.42 1.211 92.12 2130.42 1.201 92.44 2131.42 1.190 92.77 2132.42 1.179 93.09 2133.42 1.168 93.43 2134.42 1.156 93.77 2135.42 1.145 94.12 2136.42 1.133 94.48 2137.42 1.120 94.84 2138.42 1.108 95.21 2139.42 1.095 95.59 2140.42 1.082 95.98 2141.42 1.069 96.38 2142.42 1.056 96.79 2143.42 1.042 97.21 2144.42 1.028 97.64 2145.42 1.013 98.09 2146.42 0.998 98.54 2147.42 0.983 99.01 2148.42 0.968 99.50
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 15:51:21 |