| WDS: | OL20 | WDS ID/Discoverer |
| P: | 490.000 | Orbital period (years) |
| a: | 0.607 | Semi-major axis (arcseconds) |
| i: | 109.0 | Inclination (degrees) |
| Ω: | 162.4 | Longitude of ascending node (degrees) |
| T: | 2030.600 | Epoch of periastron passage (year) |
| e: | 0.46 | Eccentricity |
| ω: | 304.0 | Longitude of periastron (degrees) |
| Start-Year: | 1780.0 | Year |
| End-Year: | 2270.0 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for OL20 |
||
| Position: | 184450.80-332301.6 | Epoch-2000 right ascension and declination |
| WDS-ID: | 18448-3323 | WDS designation |
| Discoverer Code: | OL20 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 173044 | HD catalog number |
| Hipparcos number: | 91978 | Hipparcos catalog number |
| V1: | 8.47 | Magnitude of the primary |
| V2: | 8.78 | Magnitude of the secondary |
| Equinox: | Equinox | |
| Date: | 2018 | 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: | Tok2019c | 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 0.169 197.50 -------------------------- 1780.00 0.532 9.66 1781.00 0.536 9.39 1782.00 0.539 9.12 1783.00 0.542 8.85 1784.00 0.545 8.58 1785.00 0.548 8.32 1786.00 0.552 8.06 1787.00 0.555 7.81 1788.00 0.558 7.55 1789.00 0.561 7.30 1790.00 0.564 7.06 1791.00 0.567 6.81 1792.00 0.570 6.57 1793.00 0.573 6.33 1794.00 0.576 6.09 1795.00 0.579 5.86 1796.00 0.582 5.63 1797.00 0.585 5.40 1798.00 0.588 5.17 1799.00 0.591 4.94 1800.00 0.594 4.72 1801.00 0.597 4.50 1802.00 0.599 4.28 1803.00 0.602 4.06 1804.00 0.605 3.85 1805.00 0.608 3.64 1806.00 0.611 3.43 1807.00 0.613 3.22 1808.00 0.616 3.01 1809.00 0.619 2.80 1810.00 0.621 2.60 1811.00 0.624 2.40 1812.00 0.626 2.20 1813.00 0.629 2.00 1814.00 0.632 1.80 1815.00 0.634 1.61 1816.00 0.636 1.41 1817.00 0.639 1.22 1818.00 0.641 1.03 1819.00 0.644 0.84 1820.00 0.646 0.65 1821.00 0.648 0.47 1822.00 0.651 0.28 1823.00 0.653 0.10 1824.00 0.655 359.91 1825.00 0.658 359.73 1826.00 0.660 359.55 1827.00 0.662 359.37 1828.00 0.664 359.19 1829.00 0.666 359.02 1830.00 0.668 358.84 1831.00 0.670 358.67 1832.00 0.672 358.49 1833.00 0.674 358.32 1834.00 0.676 358.15 1835.00 0.678 357.98 1836.00 0.680 357.81 1837.00 0.682 357.64 1838.00 0.684 357.47 1839.00 0.685 357.30 1840.00 0.687 357.14 1841.00 0.689 356.97 1842.00 0.690 356.81 1843.00 0.692 356.64 1844.00 0.694 356.48 1845.00 0.695 356.32 1846.00 0.697 356.16 1847.00 0.698 356.00 1848.00 0.700 355.84 1849.00 0.701 355.68 1850.00 0.702 355.52 1851.00 0.704 355.36 1852.00 0.705 355.20 1853.00 0.706 355.04 1854.00 0.708 354.89 1855.00 0.709 354.73 1856.00 0.710 354.58 1857.00 0.711 354.42 1858.00 0.712 354.27 1859.00 0.713 354.11 1860.00 0.714 353.96 1861.00 0.715 353.81 1862.00 0.716 353.65 1863.00 0.717 353.50 1864.00 0.717 353.35 1865.00 0.718 353.20 1866.00 0.719 353.04 1867.00 0.720 352.89 1868.00 0.720 352.74 1869.00 0.721 352.59 1870.00 0.721 352.44 1871.00 0.722 352.29 1872.00 0.722 352.14 1873.00 0.723 351.99 1874.00 0.723 351.84 1875.00 0.723 351.69 1876.00 0.724 351.54 1877.00 0.724 351.39 1878.00 0.724 351.24 1879.00 0.724 351.09 1880.00 0.724 350.95 1881.00 0.724 350.80 1882.00 0.724 350.65 1883.00 0.724 350.50 1884.00 0.724 350.35 1885.00 0.724 350.20 1886.00 0.724 350.05 1887.00 0.723 349.90 1888.00 0.723 349.75 1889.00 0.723 349.60 1890.00 0.722 349.45 1891.00 0.722 349.30 1892.00 0.721 349.15 1893.00 0.721 349.00 1894.00 0.720 348.85 1895.00 0.719 348.70 1896.00 0.718 348.55 1897.00 0.718 348.40 1898.00 0.717 348.24 1899.00 0.716 348.09 1900.00 0.715 347.94 1901.00 0.714 347.78 1902.00 0.713 347.63 1903.00 0.711 347.48 1904.00 0.710 347.32 1905.00 0.709 347.17 1906.00 0.708 347.01 1907.00 0.706 346.85 1908.00 0.705 346.70 1909.00 0.703 346.54 1910.00 0.701 346.38 1911.00 0.700 346.22 1912.00 0.698 346.06 1913.00 0.696 345.90 1914.00 0.694 345.74 1915.00 0.692 345.57 1916.00 0.690 345.41 1917.00 0.688 345.25 1918.00 0.686 345.08 1919.00 0.684 344.91 1920.00 0.682 344.75 1921.00 0.679 344.58 1922.00 0.677 344.41 1923.00 0.674 344.23 1924.00 0.672 344.06 1925.00 0.669 343.89 1926.00 0.666 343.71 1927.00 0.663 343.54 1928.00 0.661 343.36 1929.00 0.658 343.18 1930.00 0.655 342.99 1931.00 0.651 342.81 1932.00 0.648 342.63 1933.00 0.645 342.44 1934.00 0.642 342.25 1935.00 0.638 342.06 1936.00 0.635 341.87 1937.00 0.631 341.67 1938.00 0.627 341.47 1939.00 0.624 341.27 1940.00 0.620 341.07 1941.00 0.616 340.86 1942.00 0.612 340.66 1943.00 0.608 340.45 1944.00 0.603 340.23 1945.00 0.599 340.02 1946.00 0.595 339.80 1947.00 0.590 339.57 1948.00 0.585 339.35 1949.00 0.581 339.12 1950.00 0.576 338.88 1951.00 0.571 338.64 1952.00 0.566 338.40 1953.00 0.561 338.16 1954.00 0.556 337.91 1955.00 0.551 337.65 1956.00 0.545 337.39 1957.00 0.540 337.12 1958.00 0.534 336.85 1959.00 0.528 336.57 1960.00 0.523 336.29 1961.00 0.517 336.00 1962.00 0.511 335.71 1963.00 0.505 335.40 1964.00 0.499 335.09 1965.00 0.492 334.77 1966.00 0.486 334.44 1967.00 0.479 334.11 1968.00 0.473 333.76 1969.00 0.466 333.41 1970.00 0.459 333.04 1971.00 0.452 332.66 1972.00 0.445 332.28 1973.00 0.438 331.87 1974.00 0.431 331.46 1975.00 0.423 331.03 1976.00 0.416 330.58 1977.00 0.408 330.12 1978.00 0.400 329.64 1979.00 0.392 329.15 1980.00 0.384 328.63 1981.00 0.376 328.09 1982.00 0.368 327.52 1983.00 0.360 326.93 1984.00 0.352 326.31 1985.00 0.343 325.66 1986.00 0.335 324.98 1987.00 0.326 324.27 1988.00 0.317 323.51 1989.00 0.308 322.71 1990.00 0.300 321.86 1991.00 0.291 320.96 1992.00 0.282 320.01 1993.00 0.272 318.99 1994.00 0.263 317.90 1995.00 0.254 316.73 1996.00 0.245 315.47 1997.00 0.236 314.12 1998.00 0.227 312.65 1999.00 0.217 311.06 2000.00 0.208 309.33 2001.00 0.199 307.45 2002.00 0.190 305.39 2003.00 0.182 303.12 2004.00 0.173 300.63 2005.00 0.165 297.88 2006.00 0.157 294.85 2007.00 0.149 291.49 2008.00 0.142 287.78 2009.00 0.135 283.69 2010.00 0.129 279.20 2011.00 0.124 274.30 2012.00 0.119 269.00 2013.00 0.116 263.35 2014.00 0.114 257.41 2015.00 0.113 251.30 2016.00 0.113 245.13 2017.00 0.114 239.03 2018.00 0.116 233.13 2019.00 0.120 227.52 2020.00 0.124 222.28 2021.00 0.130 217.42 2022.00 0.136 212.98 2023.00 0.142 208.93 2024.00 0.150 205.25 2025.00 0.157 201.92 2026.00 0.165 198.91 2027.00 0.173 196.17 2028.00 0.181 193.68 2029.00 0.190 191.41 2030.00 0.198 189.33 2031.00 0.207 187.42 2032.00 0.215 185.67 2033.00 0.224 184.05 2034.00 0.232 182.54 2035.00 0.241 181.14 2036.00 0.249 179.84 2037.00 0.257 178.62 2038.00 0.265 177.47 2039.00 0.273 176.39 2040.00 0.280 175.36 2041.00 0.288 174.39 2042.00 0.295 173.47 2043.00 0.302 172.59 2044.00 0.309 171.75 2045.00 0.315 170.95 2046.00 0.322 170.18 2047.00 0.328 169.44 2048.00 0.334 168.72 2049.00 0.339 168.03 2050.00 0.345 167.36 2051.00 0.350 166.71 2052.00 0.355 166.08 2053.00 0.359 165.47 2054.00 0.364 164.87 2055.00 0.368 164.28 2056.00 0.372 163.71 2057.00 0.376 163.15 2058.00 0.379 162.60 2059.00 0.383 162.07 2060.00 0.386 161.54 2061.00 0.389 161.01 2062.00 0.391 160.50 2063.00 0.394 159.99 2064.00 0.396 159.49 2065.00 0.398 158.99 2066.00 0.400 158.50 2067.00 0.402 158.02 2068.00 0.403 157.53 2069.00 0.405 157.05 2070.00 0.406 156.58 2071.00 0.407 156.10 2072.00 0.408 155.63 2073.00 0.408 155.16 2074.00 0.409 154.69 2075.00 0.409 154.22 2076.00 0.409 153.75 2077.00 0.409 153.29 2078.00 0.409 152.82 2079.00 0.409 152.35 2080.00 0.409 151.88 2081.00 0.408 151.42 2082.00 0.408 150.95 2083.00 0.407 150.47 2084.00 0.406 150.00 2085.00 0.405 149.53 2086.00 0.404 149.05 2087.00 0.403 148.57 2088.00 0.402 148.08 2089.00 0.401 147.60 2090.00 0.399 147.11 2091.00 0.398 146.62 2092.00 0.396 146.12 2093.00 0.394 145.62 2094.00 0.393 145.11 2095.00 0.391 144.60 2096.00 0.389 144.09 2097.00 0.387 143.57 2098.00 0.385 143.05 2099.00 0.383 142.52 2100.00 0.381 141.98 2101.00 0.379 141.44 2102.00 0.377 140.89 2103.00 0.374 140.33 2104.00 0.372 139.77 2105.00 0.370 139.20 2106.00 0.367 138.63 2107.00 0.365 138.04 2108.00 0.362 137.45 2109.00 0.360 136.85 2110.00 0.357 136.24 2111.00 0.355 135.63 2112.00 0.352 135.00 2113.00 0.350 134.36 2114.00 0.347 133.72 2115.00 0.344 133.06 2116.00 0.342 132.40 2117.00 0.339 131.73 2118.00 0.336 131.04 2119.00 0.334 130.34 2120.00 0.331 129.63 2121.00 0.328 128.91 2122.00 0.326 128.18 2123.00 0.323 127.44 2124.00 0.320 126.68 2125.00 0.318 125.92 2126.00 0.315 125.13 2127.00 0.313 124.34 2128.00 0.310 123.53 2129.00 0.307 122.71 2130.00 0.305 121.88 2131.00 0.302 121.03 2132.00 0.300 120.16 2133.00 0.297 119.28 2134.00 0.295 118.39 2135.00 0.292 117.48 2136.00 0.290 116.56 2137.00 0.288 115.62 2138.00 0.285 114.67 2139.00 0.283 113.70 2140.00 0.281 112.72 2141.00 0.279 111.72 2142.00 0.277 110.71 2143.00 0.275 109.68 2144.00 0.273 108.63 2145.00 0.271 107.58 2146.00 0.269 106.50 2147.00 0.267 105.41 2148.00 0.266 104.31 2149.00 0.264 103.19 2150.00 0.262 102.06 2151.00 0.261 100.92 2152.00 0.259 99.77 2153.00 0.258 98.60 2154.00 0.257 97.42 2155.00 0.256 96.23 2156.00 0.255 95.02 2157.00 0.254 93.81 2158.00 0.253 92.59 2159.00 0.252 91.37 2160.00 0.251 90.13 2161.00 0.251 88.89 2162.00 0.250 87.64 2163.00 0.250 86.39 2164.00 0.249 85.13 2165.00 0.249 83.87 2166.00 0.249 82.61 2167.00 0.249 81.35 2168.00 0.249 80.09 2169.00 0.249 78.83 2170.00 0.250 77.58 2171.00 0.250 76.32 2172.00 0.250 75.07 2173.00 0.251 73.83 2174.00 0.252 72.59 2175.00 0.253 71.36 2176.00 0.253 70.14 2177.00 0.254 68.92 2178.00 0.255 67.72 2179.00 0.257 66.52 2180.00 0.258 65.34 2181.00 0.259 64.17 2182.00 0.260 63.01 2183.00 0.262 61.86 2184.00 0.264 60.73 2185.00 0.265 59.61 2186.00 0.267 58.50 2187.00 0.269 57.41 2188.00 0.271 56.34 2189.00 0.273 55.28 2190.00 0.275 54.23 2191.00 0.277 53.20 2192.00 0.279 52.19 2193.00 0.281 51.19 2194.00 0.284 50.21 2195.00 0.286 49.25 2196.00 0.288 48.30 2197.00 0.291 47.37 2198.00 0.294 46.45 2199.00 0.296 45.55 2200.00 0.299 44.67 2201.00 0.301 43.80 2202.00 0.304 42.94 2203.00 0.307 42.11 2204.00 0.310 41.28 2205.00 0.313 40.48 2206.00 0.316 39.68 2207.00 0.319 38.91 2208.00 0.322 38.14 2209.00 0.325 37.39 2210.00 0.328 36.66 2211.00 0.331 35.94 2212.00 0.334 35.23 2213.00 0.337 34.54 2214.00 0.341 33.86 2215.00 0.344 33.19 2216.00 0.347 32.53 2217.00 0.350 31.89 2218.00 0.354 31.26 2219.00 0.357 30.64 2220.00 0.360 30.03 2221.00 0.364 29.43 2222.00 0.367 28.84 2223.00 0.370 28.27 2224.00 0.374 27.70 2225.00 0.377 27.15 2226.00 0.381 26.60 2227.00 0.384 26.07 2228.00 0.388 25.54 2229.00 0.391 25.02 2230.00 0.395 24.52 2231.00 0.398 24.02 2232.00 0.401 23.53 2233.00 0.405 23.05 2234.00 0.408 22.57 2235.00 0.412 22.11 2236.00 0.416 21.65 2237.00 0.419 21.20 2238.00 0.423 20.76 2239.00 0.426 20.33 2240.00 0.430 19.90 2241.00 0.433 19.48 2242.00 0.437 19.06 2243.00 0.440 18.66 2244.00 0.444 18.26 2245.00 0.447 17.86 2246.00 0.451 17.47 2247.00 0.454 17.09 2248.00 0.458 16.72 2249.00 0.461 16.34 2250.00 0.465 15.98 2251.00 0.468 15.62 2252.00 0.472 15.27 2253.00 0.475 14.92 2254.00 0.479 14.57 2255.00 0.482 14.23 2256.00 0.485 13.90 2257.00 0.489 13.57 2258.00 0.492 13.24 2259.00 0.496 12.92 2260.00 0.499 12.61 2261.00 0.502 12.29 2262.00 0.506 11.99 2263.00 0.509 11.68 2264.00 0.513 11.38 2265.00 0.516 11.09 2266.00 0.519 10.79 2267.00 0.522 10.51 2268.00 0.526 10.22 2269.00 0.529 9.94
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
|
| Report created: |
2026-06-25 17:55:04 |