| WDS: | STF2509 | WDS ID/Discoverer |
| P: | 627.000 | Orbital period (years) |
| a: | 1.345 | Semi-major axis (arcseconds) |
| i: | 101.2 | Inclination (degrees) |
| Ω: | 139.6 | Longitude of ascending node (degrees) |
| T: | 1737.000 | Epoch of periastron passage (year) |
| e: | 0.75 | Eccentricity |
| ω: | 325.4 | Longitude of periastron (degrees) |
| Start-Year: | 1711.5 | Year |
| End-Year: | 2338.5 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for STF2509 |
||
| Position: | 191653.09+631227.0 | Epoch-2000 right ascension and declination |
| WDS-ID: | 19169+6312 | WDS designation |
| Discoverer Code: | STF2509 | Discover designation and components |
| ADS number: | 12296 | Aitken Double Star catalog |
| HD number: | 181566 | HD catalog number |
| Hipparcos number: | 94760 | Hipparcos catalog number |
| V1: | 7.44 | Magnitude of the primary |
| V2: | 8.17 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2011 | 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: | Zir2014a | 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 1.878 328.10 -------------------------- 1711.50 0.417 306.53 1712.50 0.393 305.72 1713.50 0.369 304.79 1714.50 0.344 303.74 1715.50 0.320 302.53 1716.50 0.295 301.11 1717.50 0.269 299.43 1718.50 0.244 297.40 1719.50 0.219 294.90 1720.50 0.193 291.75 1721.50 0.169 287.65 1722.50 0.145 282.17 1723.50 0.122 274.59 1724.50 0.102 263.82 1725.50 0.087 248.68 1726.50 0.080 229.22 1727.50 0.083 208.72 1728.50 0.095 191.51 1729.50 0.113 178.94 1730.50 0.134 170.07 1731.50 0.157 163.71 1732.50 0.180 158.99 1733.50 0.204 155.36 1734.50 0.227 152.47 1735.50 0.249 150.11 1736.50 0.269 148.12 1737.50 0.289 146.40 1738.50 0.306 144.90 1739.50 0.322 143.55 1740.50 0.336 142.32 1741.50 0.349 141.18 1742.50 0.359 140.12 1743.50 0.368 139.11 1744.50 0.375 138.14 1745.50 0.380 137.21 1746.50 0.384 136.29 1747.50 0.387 135.40 1748.50 0.388 134.51 1749.50 0.388 133.62 1750.50 0.387 132.74 1751.50 0.386 131.84 1752.50 0.383 130.94 1753.50 0.380 130.02 1754.50 0.376 129.09 1755.50 0.371 128.13 1756.50 0.366 127.15 1757.50 0.360 126.13 1758.50 0.354 125.09 1759.50 0.348 124.01 1760.50 0.341 122.88 1761.50 0.334 121.71 1762.50 0.327 120.49 1763.50 0.320 119.22 1764.50 0.313 117.89 1765.50 0.305 116.49 1766.50 0.298 115.02 1767.50 0.290 113.48 1768.50 0.283 111.85 1769.50 0.275 110.14 1770.50 0.268 108.33 1771.50 0.261 106.42 1772.50 0.254 104.41 1773.50 0.247 102.28 1774.50 0.240 100.03 1775.50 0.234 97.66 1776.50 0.228 95.16 1777.50 0.222 92.52 1778.50 0.217 89.76 1779.50 0.212 86.87 1780.50 0.208 83.84 1781.50 0.204 80.70 1782.50 0.201 77.46 1783.50 0.199 74.11 1784.50 0.197 70.69 1785.50 0.195 67.21 1786.50 0.195 63.70 1787.50 0.195 60.18 1788.50 0.195 56.67 1789.50 0.197 53.20 1790.50 0.199 49.79 1791.50 0.202 46.46 1792.50 0.205 43.23 1793.50 0.209 40.12 1794.50 0.213 37.12 1795.50 0.218 34.26 1796.50 0.224 31.53 1797.50 0.230 28.93 1798.50 0.236 26.47 1799.50 0.243 24.15 1800.50 0.250 21.95 1801.50 0.257 19.87 1802.50 0.265 17.91 1803.50 0.273 16.06 1804.50 0.281 14.32 1805.50 0.289 12.67 1806.50 0.298 11.12 1807.50 0.306 9.66 1808.50 0.315 8.27 1809.50 0.324 6.97 1810.50 0.333 5.73 1811.50 0.342 4.56 1812.50 0.351 3.45 1813.50 0.361 2.39 1814.50 0.370 1.39 1815.50 0.380 0.45 1816.50 0.389 359.54 1817.50 0.399 358.68 1818.50 0.408 357.86 1819.50 0.418 357.08 1820.50 0.428 356.33 1821.50 0.437 355.62 1822.50 0.447 354.94 1823.50 0.457 354.29 1824.50 0.467 353.66 1825.50 0.477 353.06 1826.50 0.486 352.49 1827.50 0.496 351.93 1828.50 0.506 351.40 1829.50 0.516 350.89 1830.50 0.526 350.40 1831.50 0.535 349.92 1832.50 0.545 349.47 1833.50 0.555 349.02 1834.50 0.565 348.60 1835.50 0.575 348.19 1836.50 0.584 347.79 1837.50 0.594 347.41 1838.50 0.604 347.03 1839.50 0.614 346.67 1840.50 0.623 346.33 1841.50 0.633 345.99 1842.50 0.643 345.66 1843.50 0.652 345.34 1844.50 0.662 345.03 1845.50 0.671 344.73 1846.50 0.681 344.44 1847.50 0.691 344.16 1848.50 0.700 343.88 1849.50 0.710 343.61 1850.50 0.719 343.35 1851.50 0.728 343.09 1852.50 0.738 342.85 1853.50 0.747 342.60 1854.50 0.757 342.37 1855.50 0.766 342.14 1856.50 0.775 341.91 1857.50 0.785 341.69 1858.50 0.794 341.48 1859.50 0.803 341.27 1860.50 0.812 341.07 1861.50 0.821 340.87 1862.50 0.831 340.67 1863.50 0.840 340.48 1864.50 0.849 340.29 1865.50 0.858 340.11 1866.50 0.867 339.93 1867.50 0.876 339.75 1868.50 0.885 339.58 1869.50 0.894 339.41 1870.50 0.903 339.25 1871.50 0.911 339.08 1872.50 0.920 338.93 1873.50 0.929 338.77 1874.50 0.938 338.62 1875.50 0.946 338.47 1876.50 0.955 338.32 1877.50 0.964 338.17 1878.50 0.972 338.03 1879.50 0.981 337.89 1880.50 0.990 337.75 1881.50 0.998 337.62 1882.50 1.007 337.49 1883.50 1.015 337.35 1884.50 1.024 337.23 1885.50 1.032 337.10 1886.50 1.040 336.98 1887.50 1.049 336.85 1888.50 1.057 336.73 1889.50 1.065 336.61 1890.50 1.073 336.50 1891.50 1.082 336.38 1892.50 1.090 336.27 1893.50 1.098 336.16 1894.50 1.106 336.05 1895.50 1.114 335.94 1896.50 1.122 335.83 1897.50 1.130 335.73 1898.50 1.138 335.62 1899.50 1.146 335.52 1900.50 1.154 335.42 1901.50 1.162 335.32 1902.50 1.170 335.22 1903.50 1.177 335.13 1904.50 1.185 335.03 1905.50 1.193 334.94 1906.50 1.201 334.84 1907.50 1.208 334.75 1908.50 1.216 334.66 1909.50 1.223 334.57 1910.50 1.231 334.48 1911.50 1.238 334.39 1912.50 1.246 334.31 1913.50 1.253 334.22 1914.50 1.261 334.14 1915.50 1.268 334.05 1916.50 1.276 333.97 1917.50 1.283 333.89 1918.50 1.290 333.81 1919.50 1.297 333.73 1920.50 1.305 333.65 1921.50 1.312 333.57 1922.50 1.319 333.50 1923.50 1.326 333.42 1924.50 1.333 333.34 1925.50 1.340 333.27 1926.50 1.347 333.20 1927.50 1.354 333.12 1928.50 1.361 333.05 1929.50 1.368 332.98 1930.50 1.375 332.91 1931.50 1.382 332.84 1932.50 1.389 332.77 1933.50 1.395 332.70 1934.50 1.402 332.63 1935.50 1.409 332.56 1936.50 1.416 332.50 1937.50 1.422 332.43 1938.50 1.429 332.36 1939.50 1.435 332.30 1940.50 1.442 332.24 1941.50 1.448 332.17 1942.50 1.455 332.11 1943.50 1.461 332.05 1944.50 1.468 331.98 1945.50 1.474 331.92 1946.50 1.481 331.86 1947.50 1.487 331.80 1948.50 1.493 331.74 1949.50 1.499 331.68 1950.50 1.506 331.62 1951.50 1.512 331.56 1952.50 1.518 331.50 1953.50 1.524 331.45 1954.50 1.530 331.39 1955.50 1.536 331.33 1956.50 1.542 331.28 1957.50 1.548 331.22 1958.50 1.554 331.16 1959.50 1.560 331.11 1960.50 1.566 331.05 1961.50 1.572 331.00 1962.50 1.577 330.95 1963.50 1.583 330.89 1964.50 1.589 330.84 1965.50 1.595 330.79 1966.50 1.600 330.74 1967.50 1.606 330.68 1968.50 1.611 330.63 1969.50 1.617 330.58 1970.50 1.623 330.53 1971.50 1.628 330.48 1972.50 1.634 330.43 1973.50 1.639 330.38 1974.50 1.644 330.33 1975.50 1.650 330.28 1976.50 1.655 330.23 1977.50 1.660 330.18 1978.50 1.666 330.13 1979.50 1.671 330.09 1980.50 1.676 330.04 1981.50 1.681 329.99 1982.50 1.686 329.94 1983.50 1.691 329.90 1984.50 1.697 329.85 1985.50 1.702 329.81 1986.50 1.707 329.76 1987.50 1.712 329.71 1988.50 1.716 329.67 1989.50 1.721 329.62 1990.50 1.726 329.58 1991.50 1.731 329.53 1992.50 1.736 329.49 1993.50 1.741 329.44 1994.50 1.745 329.40 1995.50 1.750 329.36 1996.50 1.755 329.31 1997.50 1.759 329.27 1998.50 1.764 329.23 1999.50 1.768 329.18 2000.50 1.773 329.14 2001.50 1.777 329.10 2002.50 1.782 329.06 2003.50 1.786 329.02 2004.50 1.791 328.97 2005.50 1.795 328.93 2006.50 1.799 328.89 2007.50 1.804 328.85 2008.50 1.808 328.81 2009.50 1.812 328.77 2010.50 1.816 328.73 2011.50 1.820 328.69 2012.50 1.824 328.65 2013.50 1.829 328.61 2014.50 1.833 328.57 2015.50 1.837 328.53 2016.50 1.841 328.49 2017.50 1.844 328.45 2018.50 1.848 328.41 2019.50 1.852 328.37 2020.50 1.856 328.33 2021.50 1.860 328.29 2022.50 1.864 328.25 2023.50 1.867 328.22 2024.50 1.871 328.18 2025.50 1.875 328.14 2026.50 1.878 328.10 2027.50 1.882 328.06 2028.50 1.885 328.03 2029.50 1.889 327.99 2030.50 1.892 327.95 2031.50 1.896 327.92 2032.50 1.899 327.88 2033.50 1.903 327.84 2034.50 1.906 327.80 2035.50 1.909 327.77 2036.50 1.913 327.73 2037.50 1.916 327.69 2038.50 1.919 327.66 2039.50 1.922 327.62 2040.50 1.925 327.59 2041.50 1.928 327.55 2042.50 1.932 327.51 2043.50 1.935 327.48 2044.50 1.938 327.44 2045.50 1.941 327.41 2046.50 1.943 327.37 2047.50 1.946 327.34 2048.50 1.949 327.30 2049.50 1.952 327.27 2050.50 1.955 327.23 2051.50 1.958 327.20 2052.50 1.960 327.16 2053.50 1.963 327.13 2054.50 1.966 327.09 2055.50 1.968 327.06 2056.50 1.971 327.02 2057.50 1.973 326.99 2058.50 1.976 326.96 2059.50 1.978 326.92 2060.50 1.981 326.89 2061.50 1.983 326.85 2062.50 1.985 326.82 2063.50 1.988 326.79 2064.50 1.990 326.75 2065.50 1.992 326.72 2066.50 1.994 326.68 2067.50 1.996 326.65 2068.50 1.999 326.62 2069.50 2.001 326.58 2070.50 2.003 326.55 2071.50 2.005 326.52 2072.50 2.007 326.48 2073.50 2.009 326.45 2074.50 2.011 326.42 2075.50 2.012 326.39 2076.50 2.014 326.35 2077.50 2.016 326.32 2078.50 2.018 326.29 2079.50 2.019 326.25 2080.50 2.021 326.22 2081.50 2.023 326.19 2082.50 2.024 326.16 2083.50 2.026 326.12 2084.50 2.027 326.09 2085.50 2.029 326.06 2086.50 2.030 326.03 2087.50 2.032 325.99 2088.50 2.033 325.96 2089.50 2.034 325.93 2090.50 2.036 325.90 2091.50 2.037 325.86 2092.50 2.038 325.83 2093.50 2.039 325.80 2094.50 2.041 325.77 2095.50 2.042 325.74 2096.50 2.043 325.70 2097.50 2.044 325.67 2098.50 2.045 325.64 2099.50 2.046 325.61 2100.50 2.046 325.58 2101.50 2.047 325.55 2102.50 2.048 325.51 2103.50 2.049 325.48 2104.50 2.050 325.45 2105.50 2.050 325.42 2106.50 2.051 325.39 2107.50 2.052 325.35 2108.50 2.052 325.32 2109.50 2.053 325.29 2110.50 2.053 325.26 2111.50 2.054 325.23 2112.50 2.054 325.20 2113.50 2.054 325.16 2114.50 2.055 325.13 2115.50 2.055 325.10 2116.50 2.055 325.07 2117.50 2.056 325.04 2118.50 2.056 325.01 2119.50 2.056 324.97 2120.50 2.056 324.94 2121.50 2.056 324.91 2122.50 2.056 324.88 2123.50 2.056 324.85 2124.50 2.056 324.82 2125.50 2.056 324.79 2126.50 2.055 324.75 2127.50 2.055 324.72 2128.50 2.055 324.69 2129.50 2.055 324.66 2130.50 2.054 324.63 2131.50 2.054 324.60 2132.50 2.053 324.56 2133.50 2.053 324.53 2134.50 2.052 324.50 2135.50 2.052 324.47 2136.50 2.051 324.44 2137.50 2.051 324.41 2138.50 2.050 324.37 2139.50 2.049 324.34 2140.50 2.048 324.31 2141.50 2.048 324.28 2142.50 2.047 324.25 2143.50 2.046 324.22 2144.50 2.045 324.18 2145.50 2.044 324.15 2146.50 2.043 324.12 2147.50 2.042 324.09 2148.50 2.040 324.06 2149.50 2.039 324.02 2150.50 2.038 323.99 2151.50 2.037 323.96 2152.50 2.035 323.93 2153.50 2.034 323.89 2154.50 2.032 323.86 2155.50 2.031 323.83 2156.50 2.029 323.80 2157.50 2.028 323.77 2158.50 2.026 323.73 2159.50 2.025 323.70 2160.50 2.023 323.67 2161.50 2.021 323.63 2162.50 2.019 323.60 2163.50 2.017 323.57 2164.50 2.015 323.54 2165.50 2.013 323.50 2166.50 2.011 323.47 2167.50 2.009 323.44 2168.50 2.007 323.40 2169.50 2.005 323.37 2170.50 2.003 323.34 2171.50 2.000 323.30 2172.50 1.998 323.27 2173.50 1.996 323.24 2174.50 1.993 323.20 2175.50 1.991 323.17 2176.50 1.988 323.14 2177.50 1.986 323.10 2178.50 1.983 323.07 2179.50 1.980 323.04 2180.50 1.977 323.00 2181.50 1.975 322.97 2182.50 1.972 322.93 2183.50 1.969 322.90 2184.50 1.966 322.86 2185.50 1.963 322.83 2186.50 1.960 322.79 2187.50 1.957 322.76 2188.50 1.953 322.73 2189.50 1.950 322.69 2190.50 1.947 322.65 2191.50 1.943 322.62 2192.50 1.940 322.58 2193.50 1.936 322.55 2194.50 1.933 322.51 2195.50 1.929 322.48 2196.50 1.926 322.44 2197.50 1.922 322.41 2198.50 1.918 322.37 2199.50 1.914 322.33 2200.50 1.910 322.30 2201.50 1.906 322.26 2202.50 1.902 322.22 2203.50 1.898 322.19 2204.50 1.894 322.15 2205.50 1.890 322.11 2206.50 1.886 322.07 2207.50 1.881 322.04 2208.50 1.877 322.00 2209.50 1.872 321.96 2210.50 1.868 321.92 2211.50 1.863 321.88 2212.50 1.859 321.85 2213.50 1.854 321.81 2214.50 1.849 321.77 2215.50 1.844 321.73 2216.50 1.839 321.69 2217.50 1.834 321.65 2218.50 1.829 321.61 2219.50 1.824 321.57 2220.50 1.819 321.53 2221.50 1.814 321.49 2222.50 1.808 321.45 2223.50 1.803 321.41 2224.50 1.797 321.37 2225.50 1.792 321.33 2226.50 1.786 321.28 2227.50 1.780 321.24 2228.50 1.775 321.20 2229.50 1.769 321.16 2230.50 1.763 321.11 2231.50 1.757 321.07 2232.50 1.751 321.03 2233.50 1.745 320.98 2234.50 1.738 320.94 2235.50 1.732 320.90 2236.50 1.726 320.85 2237.50 1.719 320.81 2238.50 1.713 320.76 2239.50 1.706 320.72 2240.50 1.699 320.67 2241.50 1.693 320.62 2242.50 1.686 320.58 2243.50 1.679 320.53 2244.50 1.672 320.48 2245.50 1.664 320.43 2246.50 1.657 320.38 2247.50 1.650 320.34 2248.50 1.643 320.29 2249.50 1.635 320.24 2250.50 1.628 320.19 2251.50 1.620 320.14 2252.50 1.612 320.09 2253.50 1.604 320.03 2254.50 1.596 319.98 2255.50 1.588 319.93 2256.50 1.580 319.88 2257.50 1.572 319.82 2258.50 1.564 319.77 2259.50 1.555 319.71 2260.50 1.547 319.66 2261.50 1.538 319.60 2262.50 1.529 319.54 2263.50 1.520 319.49 2264.50 1.512 319.43 2265.50 1.502 319.37 2266.50 1.493 319.31 2267.50 1.484 319.25 2268.50 1.475 319.19 2269.50 1.465 319.13 2270.50 1.456 319.07 2271.50 1.446 319.00 2272.50 1.436 318.94 2273.50 1.426 318.87 2274.50 1.416 318.81 2275.50 1.406 318.74 2276.50 1.396 318.67 2277.50 1.385 318.60 2278.50 1.375 318.53 2279.50 1.364 318.46 2280.50 1.353 318.39 2281.50 1.342 318.32 2282.50 1.331 318.24 2283.50 1.320 318.16 2284.50 1.309 318.09 2285.50 1.297 318.01 2286.50 1.286 317.93 2287.50 1.274 317.85 2288.50 1.262 317.76 2289.50 1.250 317.68 2290.50 1.238 317.59 2291.50 1.226 317.51 2292.50 1.213 317.42 2293.50 1.201 317.32 2294.50 1.188 317.23 2295.50 1.175 317.14 2296.50 1.162 317.04 2297.50 1.149 316.94 2298.50 1.135 316.84 2299.50 1.122 316.73 2300.50 1.108 316.62 2301.50 1.094 316.51 2302.50 1.080 316.40 2303.50 1.065 316.28 2304.50 1.051 316.16 2305.50 1.036 316.04 2306.50 1.021 315.92 2307.50 1.006 315.79 2308.50 0.991 315.65 2309.50 0.976 315.51 2310.50 0.960 315.37 2311.50 0.944 315.22 2312.50 0.928 315.07 2313.50 0.912 314.91 2314.50 0.895 314.75 2315.50 0.878 314.58 2316.50 0.861 314.40 2317.50 0.844 314.22 2318.50 0.826 314.03 2319.50 0.809 313.83 2320.50 0.791 313.62 2321.50 0.772 313.40 2322.50 0.754 313.17 2323.50 0.735 312.93 2324.50 0.716 312.68 2325.50 0.697 312.41 2326.50 0.677 312.13 2327.50 0.657 311.83 2328.50 0.637 311.51 2329.50 0.616 311.17 2330.50 0.595 310.81 2331.50 0.574 310.42 2332.50 0.553 309.99 2333.50 0.531 309.54 2334.50 0.509 309.05 2335.50 0.486 308.51 2336.50 0.463 307.91 2337.50 0.440 307.26
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
|
| Report created: |
2026-06-25 18:02:29 |