| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 18:37:14 |
| WDS: | A2181 | WDS ID/Discoverer |
| P: | 285.690 | Orbital period (years) |
| a: | 0.4331 | Semi-major axis (arcseconds) |
| i: | 11.94 | Inclination (degrees) |
| Ω: | 137.33 | Longitude of ascending node (degrees) |
| T: | 1962.370 | Epoch of periastron passage (year) |
| e: | 0.1259 | Eccentricity |
| ω: | 245.12 | Longitude of periastron (degrees) |
| Start-Year: | 1883.0 | Year |
| End-Year: | 2167.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 161652.42+011317.3 | Epoch-2000 right ascension and declination |
| WDS-ID: | 16169+0113 | WDS designation |
| Discoverer Code: | A2181 | Discover designation and components |
| ADS number: | 9989 | Aitken Double Star catalog |
| HD number: | 146564 | HD catalog number |
| Hipparcos number: | 79774 | Hipparcos catalog number |
| V1: | 10.12 | Magnitude of the primary |
| V2: | 10.20 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 1981 | Date of last observation |
| Orbit grade: | 5 | 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 0.428 116.2 ------------------------- 1883.0 0.444 269.4 1884.0 0.443 270.5 1885.0 0.442 271.7 1886.0 0.441 272.9 1887.0 0.440 274.1 1888.0 0.439 275.3 1889.0 0.438 276.4 1890.0 0.437 277.6 1891.0 0.436 278.8 1892.0 0.435 280.1 1893.0 0.434 281.3 1894.0 0.433 282.5 1895.0 0.432 283.7 1896.0 0.431 284.9 1897.0 0.430 286.2 1898.0 0.429 287.4 1899.0 0.428 288.7 1900.0 0.427 289.9 1901.0 0.426 291.2 1902.0 0.425 292.5 1903.0 0.424 293.7 1904.0 0.423 295.0 1905.0 0.422 296.3 1906.0 0.421 297.6 1907.0 0.420 298.9 1908.0 0.419 300.2 1909.0 0.418 301.5 1910.0 0.416 302.8 1911.0 0.415 304.2 1912.0 0.414 305.5 1913.0 0.413 306.8 1914.0 0.412 308.2 1915.0 0.411 309.5 1916.0 0.410 310.9 1917.0 0.409 312.3 1918.0 0.408 313.6 1919.0 0.407 315.0 1920.0 0.406 316.4 1921.0 0.404 317.8 1922.0 0.403 319.2 1923.0 0.402 320.6 1924.0 0.401 322.1 1925.0 0.400 323.5 1926.0 0.399 324.9 1927.0 0.398 326.4 1928.0 0.397 327.8 1929.0 0.396 329.3 1930.0 0.395 330.7 1931.0 0.394 332.2 1932.0 0.393 333.7 1933.0 0.392 335.2 1934.0 0.391 336.7 1935.0 0.390 338.2 1936.0 0.389 339.7 1937.0 0.388 341.2 1938.0 0.387 342.8 1939.0 0.386 344.3 1940.0 0.385 345.9 1941.0 0.384 347.4 1942.0 0.383 349.0 1943.0 0.382 350.5 1944.0 0.381 352.1 1945.0 0.381 353.7 1946.0 0.380 355.3 1947.0 0.379 356.9 1948.0 0.378 358.5 1949.0 0.378 0.1 1950.0 0.377 1.7 1951.0 0.376 3.3 1952.0 0.376 4.9 1953.0 0.375 6.5 1954.0 0.375 8.2 1955.0 0.374 9.8 1956.0 0.374 11.4 1957.0 0.373 13.1 1958.0 0.373 14.7 1959.0 0.373 16.4 1960.0 0.372 18.0 1961.0 0.372 19.7 1962.0 0.372 21.4 1963.0 0.372 23.0 1964.0 0.372 24.7 1965.0 0.372 26.3 1966.0 0.371 28.0 1967.0 0.371 29.7 1968.0 0.372 31.3 1969.0 0.372 33.0 1970.0 0.372 34.6 1971.0 0.372 36.3 1972.0 0.372 38.0 1973.0 0.372 39.6 1974.0 0.373 41.3 1975.0 0.373 42.9 1976.0 0.373 44.6 1977.0 0.374 46.2 1978.0 0.374 47.8 1979.0 0.375 49.5 1980.0 0.376 51.1 1981.0 0.376 52.7 1982.0 0.377 54.4 1983.0 0.378 56.0 1984.0 0.378 57.6 1985.0 0.379 59.2 1986.0 0.380 60.8 1987.0 0.381 62.4 1988.0 0.382 63.9 1989.0 0.382 65.5 1990.0 0.383 67.1 1991.0 0.384 68.6 1992.0 0.385 70.2 1993.0 0.386 71.7 1994.0 0.388 73.2 1995.0 0.389 74.8 1996.0 0.390 76.3 1997.0 0.391 77.8 1998.0 0.392 79.3 1999.0 0.393 80.8 2000.0 0.395 82.3 2001.0 0.396 83.7 2002.0 0.397 85.2 2003.0 0.398 86.6 2004.0 0.400 88.1 2005.0 0.401 89.5 2006.0 0.402 90.9 2007.0 0.404 92.3 2008.0 0.405 93.7 2009.0 0.406 95.1 2010.0 0.408 96.5 2011.0 0.409 97.9 2012.0 0.410 99.3 2013.0 0.412 100.6 2014.0 0.413 102.0 2015.0 0.414 103.3 2016.0 0.416 104.6 2017.0 0.417 106.0 2018.0 0.419 107.3 2019.0 0.420 108.6 2020.0 0.421 109.9 2021.0 0.423 111.2 2022.0 0.424 112.4 2023.0 0.425 113.7 2024.0 0.427 115.0 2025.0 0.428 116.2 2026.0 0.430 117.5 2027.0 0.431 118.7 2028.0 0.432 120.0 2029.0 0.433 121.2 2030.0 0.435 122.4 2031.0 0.436 123.6 2032.0 0.437 124.8 2033.0 0.439 126.0 2034.0 0.440 127.2 2035.0 0.441 128.4 2036.0 0.442 129.6 2037.0 0.443 130.7 2038.0 0.445 131.9 2039.0 0.446 133.0 2040.0 0.447 134.2 2041.0 0.448 135.3 2042.0 0.449 136.5 2043.0 0.450 137.6 2044.0 0.451 138.7 2045.0 0.452 139.9 2046.0 0.454 141.0 2047.0 0.455 142.1 2048.0 0.456 143.2 2049.0 0.457 144.3 2050.0 0.458 145.4 2051.0 0.458 146.5 2052.0 0.459 147.6 2053.0 0.460 148.7 2054.0 0.461 149.8 2055.0 0.462 150.8 2056.0 0.463 151.9 2057.0 0.464 153.0 2058.0 0.465 154.0 2059.0 0.465 155.1 2060.0 0.466 156.2 2061.0 0.467 157.2 2062.0 0.468 158.3 2063.0 0.468 159.3 2064.0 0.469 160.4 2065.0 0.470 161.4 2066.0 0.470 162.4 2067.0 0.471 163.5 2068.0 0.471 164.5 2069.0 0.472 165.5 2070.0 0.473 166.6 2071.0 0.473 167.6 2072.0 0.474 168.6 2073.0 0.474 169.6 2074.0 0.474 170.7 2075.0 0.475 171.7 2076.0 0.475 172.7 2077.0 0.476 173.7 2078.0 0.476 174.7 2079.0 0.476 175.7 2080.0 0.477 176.7 2081.0 0.477 177.8 2082.0 0.477 178.8 2083.0 0.478 179.8 2084.0 0.478 180.8 2085.0 0.478 181.8 2086.0 0.478 182.8 2087.0 0.479 183.8 2088.0 0.479 184.8 2089.0 0.479 185.8 2090.0 0.479 186.8 2091.0 0.479 187.8 2092.0 0.479 188.8 2093.0 0.479 189.8 2094.0 0.479 190.8 2095.0 0.480 191.8 2096.0 0.480 192.8 2097.0 0.480 193.8 2098.0 0.480 194.8 2099.0 0.480 195.8 2100.0 0.479 196.8 2101.0 0.479 197.8 2102.0 0.479 198.8 2103.0 0.479 199.8 2104.0 0.479 200.8 2105.0 0.479 201.8 2106.0 0.479 202.8 2107.0 0.479 203.8 2108.0 0.479 204.8 2109.0 0.478 205.8 2110.0 0.478 206.8 2111.0 0.478 207.8 2112.0 0.478 208.8 2113.0 0.477 209.8 2114.0 0.477 210.8 2115.0 0.477 211.8 2116.0 0.477 212.8 2117.0 0.476 213.8 2118.0 0.476 214.8 2119.0 0.476 215.8 2120.0 0.475 216.9 2121.0 0.475 217.9 2122.0 0.474 218.9 2123.0 0.474 219.9 2124.0 0.474 220.9 2125.0 0.473 222.0 2126.0 0.473 223.0 2127.0 0.472 224.0 2128.0 0.472 225.0 2129.0 0.471 226.1 2130.0 0.471 227.1 2131.0 0.470 228.1 2132.0 0.470 229.2 2133.0 0.469 230.2 2134.0 0.469 231.3 2135.0 0.468 232.3 2136.0 0.468 233.4 2137.0 0.467 234.4 2138.0 0.467 235.5 2139.0 0.466 236.5 2140.0 0.465 237.6 2141.0 0.465 238.6 2142.0 0.464 239.7 2143.0 0.463 240.8 2144.0 0.463 241.8 2145.0 0.462 242.9 2146.0 0.461 244.0 2147.0 0.461 245.1 2148.0 0.460 246.1 2149.0 0.459 247.2 2150.0 0.459 248.3 2151.0 0.458 249.4 2152.0 0.457 250.5 2153.0 0.456 251.6 2154.0 0.456 252.7 2155.0 0.455 253.8 2156.0 0.454 254.9 2157.0 0.453 256.0 2158.0 0.453 257.1 2159.0 0.452 258.3 2160.0 0.451 259.4 2161.0 0.450 260.5 2162.0 0.449 261.7 2163.0 0.448 262.8 2164.0 0.448 263.9 2165.0 0.447 265.1 2166.0 0.446 266.2