| WDS: | A2489 | WDS ID/Discoverer |
| P: | 499.000 | Orbital period (years) |
| a: | 1.35 | Semi-major axis (arcseconds) |
| i: | 95.0 | Inclination (degrees) |
| Ω: | 183.0 | Longitude of ascending node (degrees) |
| T: | 1905.000 | Epoch of periastron passage (year) |
| e: | 0.8 | Eccentricity |
| ω: | 142.0 | Longitude of periastron (degrees) |
| Start-Year: | 1775.5 | Year |
| End-Year: | 2274.5 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for A2489 |
||
| Position: | 132343.16-004309.1 | Epoch-2000 right ascension and declination |
| WDS-ID: | 13237-0043 | WDS designation |
| Discoverer Code: | A2489 | Discover designation and components |
| ADS number: | 8884 | Aitken Double Star catalog |
| HD number: | 116444 | HD catalog number |
| Hipparcos number: | 65360 | Hipparcos catalog number |
| V1: | 9.49 | Magnitude of the primary |
| V2: | 9.81 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2002 | Date of last observation |
| Orbit grade: | 5 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | n | Flags |
| Ephemerides: | Ephemerides | |
| Code: | WSI2004a | 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 1.065 190.83 -------------------------- 1775.50 1.909 184.81 1776.50 1.905 184.79 1777.50 1.901 184.77 1778.50 1.896 184.75 1779.50 1.891 184.74 1780.50 1.887 184.72 1781.50 1.882 184.70 1782.50 1.877 184.68 1783.50 1.872 184.66 1784.50 1.867 184.64 1785.50 1.862 184.62 1786.50 1.856 184.60 1787.50 1.851 184.58 1788.50 1.845 184.56 1789.50 1.840 184.54 1790.50 1.834 184.52 1791.50 1.828 184.50 1792.50 1.823 184.48 1793.50 1.817 184.46 1794.50 1.810 184.43 1795.50 1.804 184.41 1796.50 1.798 184.39 1797.50 1.792 184.37 1798.50 1.785 184.35 1799.50 1.778 184.33 1800.50 1.772 184.31 1801.50 1.765 184.28 1802.50 1.758 184.26 1803.50 1.751 184.24 1804.50 1.744 184.22 1805.50 1.736 184.19 1806.50 1.729 184.17 1807.50 1.721 184.15 1808.50 1.714 184.13 1809.50 1.706 184.10 1810.50 1.698 184.08 1811.50 1.690 184.05 1812.50 1.682 184.03 1813.50 1.673 184.01 1814.50 1.665 183.98 1815.50 1.656 183.96 1816.50 1.648 183.93 1817.50 1.639 183.90 1818.50 1.630 183.88 1819.50 1.621 183.85 1820.50 1.611 183.83 1821.50 1.602 183.80 1822.50 1.592 183.77 1823.50 1.583 183.75 1824.50 1.573 183.72 1825.50 1.563 183.69 1826.50 1.553 183.66 1827.50 1.542 183.63 1828.50 1.532 183.60 1829.50 1.521 183.57 1830.50 1.510 183.54 1831.50 1.499 183.51 1832.50 1.488 183.48 1833.50 1.477 183.45 1834.50 1.465 183.42 1835.50 1.454 183.39 1836.50 1.442 183.36 1837.50 1.430 183.32 1838.50 1.418 183.29 1839.50 1.405 183.25 1840.50 1.393 183.22 1841.50 1.380 183.18 1842.50 1.367 183.15 1843.50 1.354 183.11 1844.50 1.340 183.07 1845.50 1.326 183.03 1846.50 1.313 182.99 1847.50 1.298 182.95 1848.50 1.284 182.91 1849.50 1.270 182.87 1850.50 1.255 182.83 1851.50 1.240 182.78 1852.50 1.224 182.74 1853.50 1.209 182.69 1854.50 1.193 182.64 1855.50 1.177 182.59 1856.50 1.160 182.54 1857.50 1.144 182.49 1858.50 1.127 182.44 1859.50 1.110 182.38 1860.50 1.092 182.33 1861.50 1.074 182.27 1862.50 1.056 182.21 1863.50 1.037 182.14 1864.50 1.018 182.08 1865.50 0.999 182.01 1866.50 0.980 181.94 1867.50 0.960 181.87 1868.50 0.939 181.79 1869.50 0.918 181.71 1870.50 0.897 181.63 1871.50 0.875 181.54 1872.50 0.853 181.45 1873.50 0.831 181.35 1874.50 0.808 181.25 1875.50 0.784 181.14 1876.50 0.760 181.03 1877.50 0.736 180.90 1878.50 0.710 180.77 1879.50 0.685 180.63 1880.50 0.658 180.48 1881.50 0.631 180.31 1882.50 0.604 180.13 1883.50 0.575 179.93 1884.50 0.546 179.72 1885.50 0.516 179.47 1886.50 0.486 179.20 1887.50 0.454 178.89 1888.50 0.422 178.53 1889.50 0.389 178.11 1890.50 0.355 177.61 1891.50 0.320 177.00 1892.50 0.283 176.24 1893.50 0.246 175.26 1894.50 0.209 173.92 1895.50 0.170 171.98 1896.50 0.130 168.87 1897.50 0.091 163.04 1898.50 0.053 148.49 1899.50 0.028 95.33 1900.50 0.049 36.05 1901.50 0.086 19.59 1902.50 0.125 13.23 1903.50 0.162 9.85 1904.50 0.197 7.71 1905.50 0.228 6.19 1906.50 0.255 5.01 1907.50 0.277 4.04 1908.50 0.294 3.20 1909.50 0.307 2.44 1910.50 0.316 1.74 1911.50 0.322 1.06 1912.50 0.324 0.40 1913.50 0.324 359.75 1914.50 0.322 359.09 1915.50 0.317 358.42 1916.50 0.312 357.72 1917.50 0.305 357.00 1918.50 0.297 356.24 1919.50 0.288 355.43 1920.50 0.278 354.58 1921.50 0.268 353.66 1922.50 0.257 352.66 1923.50 0.246 351.58 1924.50 0.235 350.39 1925.50 0.223 349.07 1926.50 0.211 347.61 1927.50 0.199 345.98 1928.50 0.187 344.13 1929.50 0.175 342.03 1930.50 0.163 339.62 1931.50 0.151 336.83 1932.50 0.140 333.58 1933.50 0.129 329.76 1934.50 0.118 325.24 1935.50 0.109 319.89 1936.50 0.100 313.55 1937.50 0.093 306.12 1938.50 0.087 297.61 1939.50 0.084 288.20 1940.50 0.083 278.28 1941.50 0.084 268.42 1942.50 0.088 259.16 1943.50 0.094 250.86 1944.50 0.102 243.66 1945.50 0.111 237.54 1946.50 0.121 232.37 1947.50 0.131 228.02 1948.50 0.143 224.34 1949.50 0.154 221.21 1950.50 0.166 218.53 1951.50 0.179 216.22 1952.50 0.191 214.21 1953.50 0.204 212.45 1954.50 0.217 210.90 1955.50 0.230 209.52 1956.50 0.243 208.29 1957.50 0.256 207.19 1958.50 0.269 206.19 1959.50 0.282 205.28 1960.50 0.295 204.46 1961.50 0.309 203.70 1962.50 0.322 203.01 1963.50 0.335 202.37 1964.50 0.348 201.78 1965.50 0.361 201.23 1966.50 0.374 200.72 1967.50 0.387 200.25 1968.50 0.400 199.81 1969.50 0.413 199.39 1970.50 0.426 199.00 1971.50 0.439 198.63 1972.50 0.451 198.28 1973.50 0.464 197.95 1974.50 0.477 197.64 1975.50 0.490 197.35 1976.50 0.502 197.07 1977.50 0.515 196.80 1978.50 0.527 196.55 1979.50 0.540 196.31 1980.50 0.552 196.08 1981.50 0.565 195.86 1982.50 0.577 195.65 1983.50 0.589 195.44 1984.50 0.601 195.25 1985.50 0.614 195.06 1986.50 0.626 194.88 1987.50 0.638 194.71 1988.50 0.650 194.55 1989.50 0.662 194.39 1990.50 0.674 194.23 1991.50 0.685 194.08 1992.50 0.697 193.94 1993.50 0.709 193.80 1994.50 0.721 193.67 1995.50 0.732 193.53 1996.50 0.744 193.41 1997.50 0.755 193.29 1998.50 0.767 193.17 1999.50 0.778 193.05 2000.50 0.790 192.94 2001.50 0.801 192.83 2002.50 0.812 192.73 2003.50 0.823 192.62 2004.50 0.834 192.52 2005.50 0.845 192.43 2006.50 0.856 192.33 2007.50 0.867 192.24 2008.50 0.878 192.15 2009.50 0.889 192.06 2010.50 0.900 191.97 2011.50 0.911 191.89 2012.50 0.921 191.81 2013.50 0.932 191.73 2014.50 0.943 191.65 2015.50 0.953 191.57 2016.50 0.964 191.50 2017.50 0.974 191.42 2018.50 0.984 191.35 2019.50 0.995 191.28 2020.50 1.005 191.21 2021.50 1.015 191.15 2022.50 1.025 191.08 2023.50 1.035 191.02 2024.50 1.046 190.95 2025.50 1.056 190.89 2026.50 1.065 190.83 2027.50 1.075 190.77 2028.50 1.085 190.71 2029.50 1.095 190.65 2030.50 1.105 190.60 2031.50 1.114 190.54 2032.50 1.124 190.48 2033.50 1.134 190.43 2034.50 1.143 190.38 2035.50 1.153 190.33 2036.50 1.162 190.27 2037.50 1.171 190.22 2038.50 1.181 190.17 2039.50 1.190 190.12 2040.50 1.199 190.08 2041.50 1.208 190.03 2042.50 1.217 189.98 2043.50 1.226 189.94 2044.50 1.235 189.89 2045.50 1.244 189.85 2046.50 1.253 189.80 2047.50 1.262 189.76 2048.50 1.271 189.72 2049.50 1.280 189.67 2050.50 1.288 189.63 2051.50 1.297 189.59 2052.50 1.306 189.55 2053.50 1.314 189.51 2054.50 1.323 189.47 2055.50 1.331 189.43 2056.50 1.339 189.39 2057.50 1.348 189.35 2058.50 1.356 189.32 2059.50 1.364 189.28 2060.50 1.372 189.24 2061.50 1.381 189.21 2062.50 1.389 189.17 2063.50 1.397 189.14 2064.50 1.405 189.10 2065.50 1.413 189.07 2066.50 1.420 189.03 2067.50 1.428 189.00 2068.50 1.436 188.96 2069.50 1.444 188.93 2070.50 1.452 188.90 2071.50 1.459 188.87 2072.50 1.467 188.83 2073.50 1.474 188.80 2074.50 1.482 188.77 2075.50 1.489 188.74 2076.50 1.497 188.71 2077.50 1.504 188.68 2078.50 1.511 188.65 2079.50 1.518 188.62 2080.50 1.526 188.59 2081.50 1.533 188.56 2082.50 1.540 188.53 2083.50 1.547 188.50 2084.50 1.554 188.47 2085.50 1.561 188.44 2086.50 1.568 188.42 2087.50 1.574 188.39 2088.50 1.581 188.36 2089.50 1.588 188.33 2090.50 1.595 188.31 2091.50 1.601 188.28 2092.50 1.608 188.25 2093.50 1.614 188.23 2094.50 1.621 188.20 2095.50 1.627 188.17 2096.50 1.634 188.15 2097.50 1.640 188.12 2098.50 1.646 188.10 2099.50 1.653 188.07 2100.50 1.659 188.05 2101.50 1.665 188.02 2102.50 1.671 188.00 2103.50 1.677 187.97 2104.50 1.683 187.95 2105.50 1.689 187.92 2106.50 1.695 187.90 2107.50 1.701 187.88 2108.50 1.707 187.85 2109.50 1.712 187.83 2110.50 1.718 187.80 2111.50 1.724 187.78 2112.50 1.729 187.76 2113.50 1.735 187.74 2114.50 1.740 187.71 2115.50 1.746 187.69 2116.50 1.751 187.67 2117.50 1.757 187.65 2118.50 1.762 187.62 2119.50 1.767 187.60 2120.50 1.772 187.58 2121.50 1.777 187.56 2122.50 1.783 187.54 2123.50 1.788 187.51 2124.50 1.793 187.49 2125.50 1.798 187.47 2126.50 1.803 187.45 2127.50 1.807 187.43 2128.50 1.812 187.41 2129.50 1.817 187.39 2130.50 1.822 187.37 2131.50 1.826 187.35 2132.50 1.831 187.32 2133.50 1.835 187.30 2134.50 1.840 187.28 2135.50 1.844 187.26 2136.50 1.849 187.24 2137.50 1.853 187.22 2138.50 1.857 187.20 2139.50 1.862 187.18 2140.50 1.866 187.16 2141.50 1.870 187.14 2142.50 1.874 187.12 2143.50 1.878 187.11 2144.50 1.882 187.09 2145.50 1.886 187.07 2146.50 1.890 187.05 2147.50 1.894 187.03 2148.50 1.898 187.01 2149.50 1.901 186.99 2150.50 1.905 186.97 2151.50 1.909 186.95 2152.50 1.912 186.93 2153.50 1.916 186.91 2154.50 1.919 186.90 2155.50 1.923 186.88 2156.50 1.926 186.86 2157.50 1.929 186.84 2158.50 1.933 186.82 2159.50 1.936 186.80 2160.50 1.939 186.78 2161.50 1.942 186.77 2162.50 1.945 186.75 2163.50 1.948 186.73 2164.50 1.951 186.71 2165.50 1.954 186.69 2166.50 1.957 186.68 2167.50 1.960 186.66 2168.50 1.963 186.64 2169.50 1.965 186.62 2170.50 1.968 186.60 2171.50 1.970 186.59 2172.50 1.973 186.57 2173.50 1.975 186.55 2174.50 1.978 186.53 2175.50 1.980 186.52 2176.50 1.983 186.50 2177.50 1.985 186.48 2178.50 1.987 186.46 2179.50 1.989 186.45 2180.50 1.991 186.43 2181.50 1.993 186.41 2182.50 1.995 186.39 2183.50 1.997 186.38 2184.50 1.999 186.36 2185.50 2.001 186.34 2186.50 2.003 186.33 2187.50 2.004 186.31 2188.50 2.006 186.29 2189.50 2.008 186.27 2190.50 2.009 186.26 2191.50 2.011 186.24 2192.50 2.012 186.22 2193.50 2.013 186.21 2194.50 2.015 186.19 2195.50 2.016 186.17 2196.50 2.017 186.16 2197.50 2.018 186.14 2198.50 2.019 186.12 2199.50 2.020 186.10 2200.50 2.021 186.09 2201.50 2.022 186.07 2202.50 2.023 186.05 2203.50 2.024 186.04 2204.50 2.024 186.02 2205.50 2.025 186.00 2206.50 2.026 185.99 2207.50 2.026 185.97 2208.50 2.027 185.95 2209.50 2.027 185.94 2210.50 2.028 185.92 2211.50 2.028 185.90 2212.50 2.028 185.89 2213.50 2.028 185.87 2214.50 2.028 185.85 2215.50 2.028 185.84 2216.50 2.028 185.82 2217.50 2.028 185.80 2218.50 2.028 185.79 2219.50 2.028 185.77 2220.50 2.028 185.75 2221.50 2.027 185.74 2222.50 2.027 185.72 2223.50 2.027 185.70 2224.50 2.026 185.69 2225.50 2.025 185.67 2226.50 2.025 185.65 2227.50 2.024 185.64 2228.50 2.023 185.62 2229.50 2.022 185.60 2230.50 2.022 185.59 2231.50 2.021 185.57 2232.50 2.020 185.55 2233.50 2.018 185.54 2234.50 2.017 185.52 2235.50 2.016 185.50 2236.50 2.015 185.48 2237.50 2.013 185.47 2238.50 2.012 185.45 2239.50 2.010 185.43 2240.50 2.009 185.42 2241.50 2.007 185.40 2242.50 2.005 185.38 2243.50 2.003 185.37 2244.50 2.002 185.35 2245.50 2.000 185.33 2246.50 1.998 185.31 2247.50 1.995 185.30 2248.50 1.993 185.28 2249.50 1.991 185.26 2250.50 1.989 185.24 2251.50 1.986 185.23 2252.50 1.984 185.21 2253.50 1.981 185.19 2254.50 1.979 185.17 2255.50 1.976 185.16 2256.50 1.973 185.14 2257.50 1.970 185.12 2258.50 1.967 185.10 2259.50 1.964 185.09 2260.50 1.961 185.07 2261.50 1.958 185.05 2262.50 1.955 185.03 2263.50 1.952 185.01 2264.50 1.948 185.00 2265.50 1.945 184.98 2266.50 1.941 184.96 2267.50 1.937 184.94 2268.50 1.934 184.92 2269.50 1.930 184.90 2270.50 1.926 184.89 2271.50 1.922 184.87 2272.50 1.918 184.85 2273.50 1.914 184.83
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 16:55:54 |