| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 16:52:21 |
| WDS: | STF400AB | WDS ID/Discoverer |
| P: | 267.100 | Orbital period (years) |
| a: | 1.112 | Semi-major axis (arcseconds) |
| i: | 68.1 | Inclination (degrees) |
| Ω: | 82.7 | Longitude of ascending node (degrees) |
| T: | 1939.070 | Epoch of periastron passage (year) |
| e: | 0.697 | Eccentricity |
| ω: | 34.6 | Longitude of periastron (degrees) |
| Start-Year: | 1892.0 | Year |
| End-Year: | 2158.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 033501.04+600229.0 | Epoch-2000 right ascension and declination |
| WDS-ID: | 03350+6002 | WDS designation |
| Discoverer Code: | STF400AB | Discover designation and components |
| ADS number: | 2612 | Aitken Double Star catalog |
| HD number: | 21903 | HD catalog number |
| Hipparcos number: | 16712 | Hipparcos catalog number |
| V1: | 6.79 | Magnitude of the primary |
| V2: | 7.97 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2015 | Date of last observation |
| Orbit grade: | 3 | Orbit grade, ranging from 1 'definitive' to 5 'indeterminate' |
| Flags: | n | Flags |
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Year Sep[“] PA[°] --------------------------------------------- 2025.0 1.645 269.4 ------------------------- 1892.0 0.600 311.8 1893.0 0.584 313.1 1894.0 0.569 314.4 1895.0 0.553 315.8 1896.0 0.537 317.3 1897.0 0.522 318.9 1898.0 0.506 320.6 1899.0 0.491 322.4 1900.0 0.476 324.3 1901.0 0.462 326.4 1902.0 0.448 328.5 1903.0 0.434 330.8 1904.0 0.421 333.2 1905.0 0.408 335.8 1906.0 0.396 338.6 1907.0 0.385 341.5 1908.0 0.375 344.6 1909.0 0.365 347.9 1910.0 0.356 351.3 1911.0 0.348 354.9 1912.0 0.342 358.6 1913.0 0.336 2.5 1914.0 0.332 6.5 1915.0 0.329 10.6 1916.0 0.328 14.7 1917.0 0.327 18.9 1918.0 0.328 23.0 1919.0 0.330 27.1 1920.0 0.333 31.2 1921.0 0.337 35.2 1922.0 0.342 39.0 1923.0 0.348 42.8 1924.0 0.354 46.4 1925.0 0.361 49.9 1926.0 0.367 53.2 1927.0 0.373 56.5 1928.0 0.379 59.6 1929.0 0.384 62.7 1930.0 0.388 65.7 1931.0 0.390 68.6 1932.0 0.390 71.6 1933.0 0.387 74.5 1934.0 0.381 77.5 1935.0 0.371 80.7 1936.0 0.357 84.0 1937.0 0.339 87.7 1938.0 0.316 91.9 1939.0 0.288 96.8 1940.0 0.258 102.7 1941.0 0.226 110.4 1942.0 0.195 120.5 1943.0 0.170 134.0 1944.0 0.154 151.4 1945.0 0.152 170.8 1946.0 0.166 188.7 1947.0 0.191 203.0 1948.0 0.223 213.5 1949.0 0.260 221.2 1950.0 0.298 226.9 1951.0 0.337 231.4 1952.0 0.376 234.9 1953.0 0.415 237.7 1954.0 0.454 240.1 1955.0 0.491 242.1 1956.0 0.528 243.8 1957.0 0.564 245.3 1958.0 0.598 246.7 1959.0 0.632 247.8 1960.0 0.666 248.9 1961.0 0.698 249.9 1962.0 0.729 250.7 1963.0 0.760 251.5 1964.0 0.789 252.3 1965.0 0.818 253.0 1966.0 0.846 253.6 1967.0 0.874 254.2 1968.0 0.900 254.8 1969.0 0.926 255.3 1970.0 0.951 255.8 1971.0 0.976 256.3 1972.0 1.000 256.8 1973.0 1.023 257.2 1974.0 1.046 257.6 1975.0 1.068 258.0 1976.0 1.089 258.4 1977.0 1.110 258.8 1978.0 1.130 259.1 1979.0 1.150 259.5 1980.0 1.170 259.8 1981.0 1.188 260.1 1982.0 1.207 260.4 1983.0 1.225 260.7 1984.0 1.242 261.0 1985.0 1.259 261.3 1986.0 1.275 261.6 1987.0 1.291 261.8 1988.0 1.307 262.1 1989.0 1.322 262.4 1990.0 1.337 262.6 1991.0 1.351 262.9 1992.0 1.365 263.1 1993.0 1.379 263.3 1994.0 1.392 263.6 1995.0 1.405 263.8 1996.0 1.417 264.0 1997.0 1.429 264.3 1998.0 1.441 264.5 1999.0 1.453 264.7 2000.0 1.464 264.9 2001.0 1.474 265.1 2002.0 1.485 265.3 2003.0 1.495 265.5 2004.0 1.505 265.7 2005.0 1.514 265.9 2006.0 1.523 266.1 2007.0 1.532 266.3 2008.0 1.541 266.5 2009.0 1.549 266.7 2010.0 1.557 266.8 2011.0 1.565 267.0 2012.0 1.572 267.2 2013.0 1.580 267.4 2014.0 1.587 267.6 2015.0 1.593 267.7 2016.0 1.600 267.9 2017.0 1.606 268.1 2018.0 1.612 268.3 2019.0 1.617 268.4 2020.0 1.622 268.6 2021.0 1.628 268.8 2022.0 1.632 268.9 2023.0 1.637 269.1 2024.0 1.641 269.3 2025.0 1.645 269.4 2026.0 1.649 269.6 2027.0 1.653 269.8 2028.0 1.656 269.9 2029.0 1.660 270.1 2030.0 1.663 270.2 2031.0 1.665 270.4 2032.0 1.668 270.6 2033.0 1.670 270.7 2034.0 1.672 270.9 2035.0 1.674 271.0 2036.0 1.676 271.2 2037.0 1.677 271.4 2038.0 1.679 271.5 2039.0 1.680 271.7 2040.0 1.681 271.8 2041.0 1.681 272.0 2042.0 1.682 272.2 2043.0 1.682 272.3 2044.0 1.682 272.5 2045.0 1.682 272.6 2046.0 1.681 272.8 2047.0 1.681 272.9 2048.0 1.680 273.1 2049.0 1.679 273.3 2050.0 1.678 273.4 2051.0 1.677 273.6 2052.0 1.675 273.7 2053.0 1.673 273.9 2054.0 1.672 274.1 2055.0 1.669 274.2 2056.0 1.667 274.4 2057.0 1.665 274.5 2058.0 1.662 274.7 2059.0 1.659 274.9 2060.0 1.656 275.0 2061.0 1.653 275.2 2062.0 1.650 275.3 2063.0 1.646 275.5 2064.0 1.643 275.7 2065.0 1.639 275.8 2066.0 1.635 276.0 2067.0 1.631 276.2 2068.0 1.626 276.3 2069.0 1.622 276.5 2070.0 1.617 276.7 2071.0 1.612 276.9 2072.0 1.607 277.0 2073.0 1.602 277.2 2074.0 1.597 277.4 2075.0 1.591 277.5 2076.0 1.585 277.7 2077.0 1.579 277.9 2078.0 1.573 278.1 2079.0 1.567 278.3 2080.0 1.561 278.4 2081.0 1.554 278.6 2082.0 1.548 278.8 2083.0 1.541 279.0 2084.0 1.534 279.2 2085.0 1.527 279.4 2086.0 1.519 279.6 2087.0 1.512 279.8 2088.0 1.504 280.0 2089.0 1.496 280.2 2090.0 1.488 280.4 2091.0 1.480 280.6 2092.0 1.472 280.8 2093.0 1.464 281.0 2094.0 1.455 281.2 2095.0 1.446 281.4 2096.0 1.437 281.6 2097.0 1.428 281.8 2098.0 1.419 282.0 2099.0 1.410 282.3 2100.0 1.400 282.5 2101.0 1.391 282.7 2102.0 1.381 283.0 2103.0 1.371 283.2 2104.0 1.361 283.4 2105.0 1.350 283.7 2106.0 1.340 283.9 2107.0 1.330 284.2 2108.0 1.319 284.4 2109.0 1.308 284.7 2110.0 1.297 284.9 2111.0 1.286 285.2 2112.0 1.275 285.5 2113.0 1.263 285.8 2114.0 1.252 286.0 2115.0 1.240 286.3 2116.0 1.228 286.6 2117.0 1.216 286.9 2118.0 1.204 287.2 2119.0 1.191 287.5 2120.0 1.179 287.9 2121.0 1.166 288.2 2122.0 1.154 288.5 2123.0 1.141 288.8 2124.0 1.128 289.2 2125.0 1.115 289.5 2126.0 1.101 289.9 2127.0 1.088 290.3 2128.0 1.075 290.7 2129.0 1.061 291.1 2130.0 1.047 291.5 2131.0 1.033 291.9 2132.0 1.019 292.3 2133.0 1.005 292.7 2134.0 0.991 293.2 2135.0 0.976 293.6 2136.0 0.962 294.1 2137.0 0.947 294.6 2138.0 0.932 295.1 2139.0 0.917 295.6 2140.0 0.902 296.2 2141.0 0.887 296.7 2142.0 0.872 297.3 2143.0 0.856 297.9 2144.0 0.841 298.5 2145.0 0.826 299.2 2146.0 0.810 299.8 2147.0 0.794 300.5 2148.0 0.778 301.2 2149.0 0.763 302.0 2150.0 0.747 302.8 2151.0 0.731 303.6 2152.0 0.715 304.4 2153.0 0.699 305.3 2154.0 0.682 306.3 2155.0 0.666 307.2 2156.0 0.650 308.3 2157.0 0.634 309.4