| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 18:56:36 |
| WDS: | OL18 | WDS ID/Discoverer |
| P: | 319.400 | Orbital period (years) |
| a: | 1.746 | Semi-major axis (arcseconds) |
| i: | 86.6 | Inclination (degrees) |
| Ω: | 118.6 | Longitude of ascending node (degrees) |
| T: | 2045.220 | Epoch of periastron passage (year) |
| e: | 0.283 | Eccentricity |
| ω: | 190.0 | Longitude of periastron (degrees) |
| Start-Year: | 1866.0 | Year |
| End-Year: | 2184.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 181905.58-350924.6 | Epoch-2000 right ascension and declination |
| WDS-ID: | 18191-3509 | WDS designation |
| Discoverer Code: | OL18 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 167981 | HD catalog number |
| Hipparcos number: | 89766 | Hipparcos catalog number |
| V1: | 9.17 | Magnitude of the primary |
| V2: | 9.73 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2021 | Date of last observation |
| Orbit grade: | 4 | Orbit grade, ranging from 1 'definitive' to 5 'indeterminate' |
| Flags: | Flags |
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Year Sep[“] PA[°] --------------------------------------------- 2025.0 1.136 296.6 ------------------------- 1866.0 2.215 118.4 1867.0 2.219 118.5 1868.0 2.221 118.5 1869.0 2.224 118.5 1870.0 2.226 118.6 1871.0 2.228 118.6 1872.0 2.229 118.7 1873.0 2.230 118.7 1874.0 2.230 118.7 1875.0 2.230 118.8 1876.0 2.230 118.8 1877.0 2.229 118.9 1878.0 2.228 118.9 1879.0 2.227 118.9 1880.0 2.225 119.0 1881.0 2.222 119.0 1882.0 2.219 119.1 1883.0 2.216 119.1 1884.0 2.212 119.1 1885.0 2.208 119.2 1886.0 2.204 119.2 1887.0 2.199 119.3 1888.0 2.194 119.3 1889.0 2.188 119.3 1890.0 2.182 119.4 1891.0 2.176 119.4 1892.0 2.169 119.5 1893.0 2.162 119.5 1894.0 2.154 119.5 1895.0 2.146 119.6 1896.0 2.138 119.6 1897.0 2.129 119.7 1898.0 2.120 119.7 1899.0 2.110 119.8 1900.0 2.100 119.8 1901.0 2.090 119.9 1902.0 2.079 119.9 1903.0 2.068 119.9 1904.0 2.056 120.0 1905.0 2.044 120.0 1906.0 2.032 120.1 1907.0 2.019 120.1 1908.0 2.006 120.2 1909.0 1.993 120.2 1910.0 1.979 120.3 1911.0 1.965 120.3 1912.0 1.950 120.4 1913.0 1.935 120.4 1914.0 1.920 120.5 1915.0 1.904 120.5 1916.0 1.888 120.6 1917.0 1.871 120.6 1918.0 1.855 120.7 1919.0 1.837 120.8 1920.0 1.820 120.8 1921.0 1.802 120.9 1922.0 1.784 120.9 1923.0 1.765 121.0 1924.0 1.746 121.1 1925.0 1.727 121.1 1926.0 1.707 121.2 1927.0 1.687 121.3 1928.0 1.666 121.3 1929.0 1.646 121.4 1930.0 1.624 121.5 1931.0 1.603 121.5 1932.0 1.581 121.6 1933.0 1.559 121.7 1934.0 1.536 121.8 1935.0 1.514 121.9 1936.0 1.490 122.0 1937.0 1.467 122.0 1938.0 1.443 122.1 1939.0 1.419 122.2 1940.0 1.395 122.3 1941.0 1.370 122.4 1942.0 1.345 122.5 1943.0 1.319 122.7 1944.0 1.293 122.8 1945.0 1.267 122.9 1946.0 1.241 123.0 1947.0 1.214 123.1 1948.0 1.187 123.3 1949.0 1.160 123.4 1950.0 1.133 123.6 1951.0 1.105 123.7 1952.0 1.077 123.9 1953.0 1.048 124.1 1954.0 1.020 124.2 1955.0 0.991 124.4 1956.0 0.962 124.6 1957.0 0.932 124.9 1958.0 0.903 125.1 1959.0 0.873 125.3 1960.0 0.843 125.6 1961.0 0.812 125.9 1962.0 0.782 126.2 1963.0 0.751 126.5 1964.0 0.720 126.9 1965.0 0.689 127.3 1966.0 0.658 127.7 1967.0 0.626 128.2 1968.0 0.595 128.7 1969.0 0.563 129.3 1970.0 0.531 130.0 1971.0 0.499 130.7 1972.0 0.467 131.5 1973.0 0.435 132.5 1974.0 0.403 133.6 1975.0 0.371 134.9 1976.0 0.339 136.5 1977.0 0.307 138.4 1978.0 0.275 140.7 1979.0 0.244 143.6 1980.0 0.214 147.3 1981.0 0.185 152.3 1982.0 0.157 159.0 1983.0 0.133 168.4 1984.0 0.114 181.5 1985.0 0.102 198.6 1986.0 0.101 217.9 1987.0 0.111 235.5 1988.0 0.130 249.2 1989.0 0.154 259.0 1990.0 0.181 266.1 1991.0 0.210 271.3 1992.0 0.240 275.1 1993.0 0.271 278.2 1994.0 0.302 280.6 1995.0 0.334 282.5 1996.0 0.365 284.1 1997.0 0.397 285.4 1998.0 0.429 286.6 1999.0 0.461 287.6 2000.0 0.492 288.4 2001.0 0.524 289.2 2002.0 0.555 289.9 2003.0 0.586 290.5 2004.0 0.617 291.0 2005.0 0.647 291.5 2006.0 0.677 291.9 2007.0 0.706 292.4 2008.0 0.736 292.7 2009.0 0.764 293.1 2010.0 0.793 293.4 2011.0 0.820 293.7 2012.0 0.847 294.0 2013.0 0.874 294.2 2014.0 0.900 294.5 2015.0 0.925 294.7 2016.0 0.950 295.0 2017.0 0.974 295.2 2018.0 0.997 295.4 2019.0 1.019 295.6 2020.0 1.041 295.7 2021.0 1.062 295.9 2022.0 1.082 296.1 2023.0 1.101 296.3 2024.0 1.119 296.4 2025.0 1.136 296.6 2026.0 1.152 296.7 2027.0 1.167 296.9 2028.0 1.181 297.0 2029.0 1.194 297.1 2030.0 1.205 297.3 2031.0 1.216 297.4 2032.0 1.225 297.5 2033.0 1.234 297.7 2034.0 1.241 297.8 2035.0 1.247 297.9 2036.0 1.251 298.0 2037.0 1.254 298.2 2038.0 1.257 298.3 2039.0 1.257 298.4 2040.0 1.257 298.5 2041.0 1.255 298.7 2042.0 1.252 298.8 2043.0 1.247 298.9 2044.0 1.242 299.0 2045.0 1.235 299.2 2046.0 1.226 299.3 2047.0 1.217 299.4 2048.0 1.206 299.6 2049.0 1.194 299.7 2050.0 1.180 299.8 2051.0 1.166 300.0 2052.0 1.150 300.1 2053.0 1.133 300.3 2054.0 1.115 300.4 2055.0 1.096 300.6 2056.0 1.076 300.8 2057.0 1.054 300.9 2058.0 1.032 301.1 2059.0 1.008 301.3 2060.0 0.984 301.5 2061.0 0.959 301.7 2062.0 0.932 301.9 2063.0 0.905 302.2 2064.0 0.878 302.4 2065.0 0.849 302.7 2066.0 0.819 302.9 2067.0 0.789 303.2 2068.0 0.759 303.6 2069.0 0.727 303.9 2070.0 0.695 304.3 2071.0 0.663 304.7 2072.0 0.630 305.2 2073.0 0.596 305.7 2074.0 0.563 306.3 2075.0 0.528 307.0 2076.0 0.494 307.7 2077.0 0.459 308.6 2078.0 0.424 309.6 2079.0 0.389 310.8 2080.0 0.353 312.2 2081.0 0.318 313.9 2082.0 0.283 316.1 2083.0 0.248 318.9 2084.0 0.214 322.5 2085.0 0.181 327.6 2086.0 0.150 334.8 2087.0 0.122 345.5 2088.0 0.101 1.5 2089.0 0.091 23.2 2090.0 0.096 46.3 2091.0 0.113 64.6 2092.0 0.139 77.1 2093.0 0.169 85.4 2094.0 0.202 91.1 2095.0 0.236 95.2 2096.0 0.270 98.3 2097.0 0.305 100.7 2098.0 0.341 102.6 2099.0 0.376 104.1 2100.0 0.412 105.4 2101.0 0.447 106.4 2102.0 0.483 107.3 2103.0 0.518 108.1 2104.0 0.553 108.8 2105.0 0.588 109.4 2106.0 0.623 109.9 2107.0 0.658 110.4 2108.0 0.692 110.8 2109.0 0.726 111.2 2110.0 0.760 111.6 2111.0 0.794 111.9 2112.0 0.827 112.2 2113.0 0.860 112.5 2114.0 0.893 112.7 2115.0 0.925 113.0 2116.0 0.957 113.2 2117.0 0.989 113.4 2118.0 1.020 113.6 2119.0 1.051 113.8 2120.0 1.082 113.9 2121.0 1.112 114.1 2122.0 1.143 114.3 2123.0 1.172 114.4 2124.0 1.201 114.5 2125.0 1.230 114.7 2126.0 1.259 114.8 2127.0 1.287 114.9 2128.0 1.315 115.0 2129.0 1.342 115.1 2130.0 1.369 115.2 2131.0 1.396 115.4 2132.0 1.422 115.5 2133.0 1.448 115.5 2134.0 1.473 115.6 2135.0 1.498 115.7 2136.0 1.523 115.8 2137.0 1.547 115.9 2138.0 1.571 116.0 2139.0 1.594 116.1 2140.0 1.617 116.1 2141.0 1.640 116.2 2142.0 1.662 116.3 2143.0 1.684 116.3 2144.0 1.705 116.4 2145.0 1.726 116.5 2146.0 1.747 116.5 2147.0 1.767 116.6 2148.0 1.786 116.7 2149.0 1.805 116.7 2150.0 1.824 116.8 2151.0 1.843 116.8 2152.0 1.860 116.9 2153.0 1.878 117.0 2154.0 1.895 117.0 2155.0 1.912 117.1 2156.0 1.928 117.1 2157.0 1.944 117.2 2158.0 1.959 117.2 2159.0 1.974 117.3 2160.0 1.989 117.3 2161.0 2.003 117.4 2162.0 2.016 117.4 2163.0 2.030 117.5 2164.0 2.042 117.5 2165.0 2.055 117.6 2166.0 2.067 117.6 2167.0 2.078 117.7 2168.0 2.089 117.7 2169.0 2.100 117.7 2170.0 2.110 117.8 2171.0 2.120 117.8 2172.0 2.130 117.9 2173.0 2.139 117.9 2174.0 2.147 118.0 2175.0 2.155 118.0 2176.0 2.163 118.0 2177.0 2.170 118.1 2178.0 2.177 118.1 2179.0 2.184 118.2 2180.0 2.190 118.2 2181.0 2.195 118.3 2182.0 2.201 118.3 2183.0 2.205 118.3