| WDS: | A556AB | WDS ID/Discoverer |
| P: | 205.000 | Orbital period (years) |
| a: | 1.334 | Semi-major axis (arcseconds) |
| i: | 54.2 | Inclination (degrees) |
| Ω: | 63.2 | Longitude of ascending node (degrees) |
| T: | 2048.600 | Epoch of periastron passage (year) |
| e: | 0.301 | Eccentricity |
| ω: | 219.7 | Longitude of periastron (degrees) |
| Start-Year: | 1922.5 | Year |
| End-Year: | 2127.5 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for A556AB |
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| Position: | 103700.02-085023.6 | Epoch-2000 right ascension and declination |
| WDS-ID: | 10370-0850 | WDS designation |
| Discoverer Code: | A556AB | Discover designation and components |
| ADS number: | 7854 | Aitken Double Star catalog |
| HD number: | 91962 | HD catalog number |
| Hipparcos number: | 51966 | Hipparcos catalog number |
| V1: | 7.1 | Magnitude of the primary |
| V2: | 9.80 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2015 | Date of last observation |
| Orbit grade: | 4 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | n | Flags |
| Ephemerides: | Ephemerides | |
| Code: | Tok2015b | 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 1.007 225.82 -------------------------- 1922.50 1.632 72.58 1923.50 1.632 73.24 1924.50 1.631 73.89 1925.50 1.629 74.55 1926.50 1.626 75.21 1927.50 1.624 75.87 1928.50 1.620 76.53 1929.50 1.616 77.20 1930.50 1.612 77.87 1931.50 1.607 78.54 1932.50 1.602 79.22 1933.50 1.596 79.90 1934.50 1.590 80.58 1935.50 1.583 81.28 1936.50 1.575 81.98 1937.50 1.568 82.68 1938.50 1.560 83.39 1939.50 1.551 84.12 1940.50 1.542 84.84 1941.50 1.533 85.58 1942.50 1.523 86.33 1943.50 1.513 87.09 1944.50 1.502 87.85 1945.50 1.491 88.63 1946.50 1.480 89.42 1947.50 1.468 90.22 1948.50 1.456 91.04 1949.50 1.444 91.87 1950.50 1.431 92.71 1951.50 1.418 93.57 1952.50 1.405 94.44 1953.50 1.392 95.33 1954.50 1.378 96.24 1955.50 1.364 97.17 1956.50 1.350 98.12 1957.50 1.336 99.08 1958.50 1.321 100.07 1959.50 1.306 101.08 1960.50 1.291 102.12 1961.50 1.276 103.17 1962.50 1.261 104.26 1963.50 1.246 105.37 1964.50 1.230 106.50 1965.50 1.215 107.67 1966.50 1.199 108.87 1967.50 1.184 110.09 1968.50 1.168 111.35 1969.50 1.153 112.65 1970.50 1.137 113.98 1971.50 1.122 115.34 1972.50 1.107 116.75 1973.50 1.092 118.19 1974.50 1.077 119.67 1975.50 1.062 121.20 1976.50 1.048 122.76 1977.50 1.034 124.37 1978.50 1.020 126.03 1979.50 1.006 127.73 1980.50 0.993 129.47 1981.50 0.980 131.26 1982.50 0.968 133.10 1983.50 0.956 134.98 1984.50 0.945 136.92 1985.50 0.934 138.89 1986.50 0.924 140.91 1987.50 0.914 142.98 1988.50 0.905 145.09 1989.50 0.897 147.23 1990.50 0.890 149.42 1991.50 0.883 151.64 1992.50 0.877 153.89 1993.50 0.872 156.17 1994.50 0.867 158.48 1995.50 0.864 160.81 1996.50 0.861 163.15 1997.50 0.859 165.51 1998.50 0.858 167.87 1999.50 0.858 170.24 2000.50 0.858 172.61 2001.50 0.860 174.97 2002.50 0.862 177.32 2003.50 0.865 179.66 2004.50 0.868 181.98 2005.50 0.872 184.29 2006.50 0.877 186.56 2007.50 0.883 188.82 2008.50 0.888 191.04 2009.50 0.895 193.23 2010.50 0.902 195.39 2011.50 0.909 197.52 2012.50 0.916 199.62 2013.50 0.923 201.68 2014.50 0.931 203.71 2015.50 0.939 205.70 2016.50 0.946 207.66 2017.50 0.954 209.59 2018.50 0.962 211.49 2019.50 0.969 213.36 2020.50 0.976 215.21 2021.50 0.982 217.03 2022.50 0.988 218.82 2023.50 0.994 220.60 2024.50 0.999 222.35 2025.50 1.003 224.09 2026.50 1.007 225.82 2027.50 1.009 227.53 2028.50 1.011 229.24 2029.50 1.012 230.95 2030.50 1.012 232.65 2031.50 1.010 234.35 2032.50 1.008 236.07 2033.50 1.004 237.79 2034.50 0.999 239.53 2035.50 0.993 241.28 2036.50 0.986 243.06 2037.50 0.977 244.87 2038.50 0.967 246.72 2039.50 0.955 248.60 2040.50 0.942 250.54 2041.50 0.928 252.53 2042.50 0.913 254.59 2043.50 0.896 256.72 2044.50 0.879 258.93 2045.50 0.860 261.24 2046.50 0.841 263.65 2047.50 0.820 266.17 2048.50 0.800 268.83 2049.50 0.778 271.63 2050.50 0.757 274.59 2051.50 0.736 277.72 2052.50 0.715 281.03 2053.50 0.694 284.55 2054.50 0.675 288.27 2055.50 0.657 292.20 2056.50 0.640 296.35 2057.50 0.625 300.71 2058.50 0.613 305.26 2059.50 0.603 309.99 2060.50 0.595 314.85 2061.50 0.591 319.81 2062.50 0.590 324.82 2063.50 0.592 329.81 2064.50 0.597 334.75 2065.50 0.606 339.57 2066.50 0.617 344.25 2067.50 0.631 348.73 2068.50 0.647 353.00 2069.50 0.666 357.05 2070.50 0.686 0.87 2071.50 0.709 4.45 2072.50 0.732 7.81 2073.50 0.757 10.95 2074.50 0.783 13.89 2075.50 0.810 16.64 2076.50 0.837 19.22 2077.50 0.864 21.63 2078.50 0.892 23.89 2079.50 0.920 26.01 2080.50 0.948 28.01 2081.50 0.975 29.90 2082.50 1.003 31.68 2083.50 1.030 33.37 2084.50 1.057 34.97 2085.50 1.084 36.49 2086.50 1.110 37.94 2087.50 1.136 39.32 2088.50 1.161 40.64 2089.50 1.186 41.91 2090.50 1.210 43.12 2091.50 1.233 44.29 2092.50 1.256 45.42 2093.50 1.278 46.50 2094.50 1.300 47.55 2095.50 1.321 48.57 2096.50 1.341 49.55 2097.50 1.361 50.51 2098.50 1.379 51.44 2099.50 1.398 52.34 2100.50 1.415 53.22 2101.50 1.432 54.08 2102.50 1.448 54.92 2103.50 1.463 55.75 2104.50 1.478 56.55 2105.50 1.492 57.34 2106.50 1.505 58.12 2107.50 1.518 58.88 2108.50 1.530 59.63 2109.50 1.541 60.37 2110.50 1.552 61.10 2111.50 1.561 61.82 2112.50 1.571 62.53 2113.50 1.579 63.23 2114.50 1.587 63.93 2115.50 1.594 64.62 2116.50 1.601 65.30 2117.50 1.607 65.98 2118.50 1.612 66.65 2119.50 1.617 67.32 2120.50 1.621 67.99 2121.50 1.624 68.65 2122.50 1.627 69.31 2123.50 1.629 69.96 2124.50 1.631 70.62 2125.50 1.632 71.28 2126.50 1.633 71.93
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 16:29:01 |