Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:11:09

Orbital Elements for STF1643AB
WDS: STF1643AB WDS ID/Discoverer
P: 549.410 Orbital period (years)
a: 2.695 Semi-major axis (arcseconds)
i: 115.2 Inclination (degrees)
Ω: 155.3 Longitude of ascending node (degrees)
T: 2193.490 Epoch of periastron passage (year)
e: 0.58 Eccentricity
ω: 286.1 Longitude of periastron (degrees)
Start-Year: 1751.0 Year
End-Year: 2299.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1643AB
Position: 122713.72+270129.6 Epoch-2000 right ascension and declination
WDS-ID: 12272+2701 WDS designation
Discoverer Code: STF1643AB Discover designation and components
ADS number: 8553 Aitken Double Star catalog
HD number: 108421 HD catalog number
Hipparcos number: 60759 Hipparcos catalog number
V1: 9.03 Magnitude of the primary
V2: 9.45 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2000 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF1643AB



WDS 6th Orbit including measures of STF1643AB

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of STF1643AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     2.753      1.7
-------------------------
1751.0     1.850    117.6
1752.0     1.847    117.1
1753.0     1.844    116.6
1754.0     1.840    116.2
1755.0     1.837    115.7
1756.0     1.834    115.2
1757.0     1.830    114.7
1758.0     1.827    114.2
1759.0     1.824    113.7
1760.0     1.820    113.2
1761.0     1.817    112.7
1762.0     1.813    112.2
1763.0     1.810    111.7
1764.0     1.806    111.2
1765.0     1.803    110.7
1766.0     1.800    110.2
1767.0     1.796    109.7
1768.0     1.793    109.2
1769.0     1.789    108.6
1770.0     1.786    108.1
1771.0     1.783    107.6
1772.0     1.779    107.1
1773.0     1.776    106.6
1774.0     1.773    106.0
1775.0     1.770    105.5
1776.0     1.766    105.0
1777.0     1.763    104.5
1778.0     1.760    103.9
1779.0     1.757    103.4
1780.0     1.754    102.8
1781.0     1.751    102.3
1782.0     1.748    101.8
1783.0     1.745    101.2
1784.0     1.742    100.7
1785.0     1.739    100.1
1786.0     1.737     99.6
1787.0     1.734     99.0
1788.0     1.731     98.5
1789.0     1.729     97.9
1790.0     1.726     97.4
1791.0     1.724     96.8
1792.0     1.721     96.3
1793.0     1.719     95.7
1794.0     1.717     95.2
1795.0     1.714     94.6
1796.0     1.712     94.0
1797.0     1.710     93.5
1798.0     1.708     92.9
1799.0     1.706     92.3
1800.0     1.704     91.8
1801.0     1.703     91.2
1802.0     1.701     90.6
1803.0     1.699     90.1
1804.0     1.698     89.5
1805.0     1.697     88.9
1806.0     1.695     88.4
1807.0     1.694     87.8
1808.0     1.693     87.2
1809.0     1.692     86.6
1810.0     1.691     86.0
1811.0     1.690     85.5
1812.0     1.689     84.9
1813.0     1.688     84.3
1814.0     1.688     83.7
1815.0     1.687     83.2
1816.0     1.687     82.6
1817.0     1.686     82.0
1818.0     1.686     81.4
1819.0     1.686     80.8
1820.0     1.686     80.2
1821.0     1.686     79.7
1822.0     1.686     79.1
1823.0     1.686     78.5
1824.0     1.687     77.9
1825.0     1.687     77.3
1826.0     1.688     76.8
1827.0     1.688     76.2
1828.0     1.689     75.6
1829.0     1.690     75.0
1830.0     1.691     74.5
1831.0     1.692     73.9
1832.0     1.693     73.3
1833.0     1.694     72.7
1834.0     1.696     72.2
1835.0     1.697     71.6
1836.0     1.699     71.0
1837.0     1.700     70.4
1838.0     1.702     69.9
1839.0     1.704     69.3
1840.0     1.706     68.7
1841.0     1.708     68.2
1842.0     1.710     67.6
1843.0     1.712     67.0
1844.0     1.715     66.5
1845.0     1.717     65.9
1846.0     1.720     65.3
1847.0     1.722     64.8
1848.0     1.725     64.2
1849.0     1.728     63.7
1850.0     1.731     63.1
1851.0     1.734     62.6
1852.0     1.737     62.0
1853.0     1.740     61.5
1854.0     1.743     60.9
1855.0     1.747     60.4
1856.0     1.750     59.9
1857.0     1.754     59.3
1858.0     1.757     58.8
1859.0     1.761     58.3
1860.0     1.765     57.7
1861.0     1.769     57.2
1862.0     1.773     56.7
1863.0     1.777     56.1
1864.0     1.781     55.6
1865.0     1.785     55.1
1866.0     1.790     54.6
1867.0     1.794     54.1
1868.0     1.799     53.6
1869.0     1.803     53.1
1870.0     1.808     52.5
1871.0     1.812     52.0
1872.0     1.817     51.5
1873.0     1.822     51.0
1874.0     1.827     50.5
1875.0     1.832     50.1
1876.0     1.837     49.6
1877.0     1.842     49.1
1878.0     1.848     48.6
1879.0     1.853     48.1
1880.0     1.858     47.6
1881.0     1.864     47.1
1882.0     1.869     46.7
1883.0     1.875     46.2
1884.0     1.880     45.7
1885.0     1.886     45.3
1886.0     1.892     44.8
1887.0     1.897     44.3
1888.0     1.903     43.9
1889.0     1.909     43.4
1890.0     1.915     43.0
1891.0     1.921     42.5
1892.0     1.927     42.1
1893.0     1.933     41.6
1894.0     1.939     41.2
1895.0     1.946     40.8
1896.0     1.952     40.3
1897.0     1.958     39.9
1898.0     1.965     39.5
1899.0     1.971     39.0
1900.0     1.977     38.6
1901.0     1.984     38.2
1902.0     1.990     37.8
1903.0     1.997     37.4
1904.0     2.003     37.0
1905.0     2.010     36.5
1906.0     2.017     36.1
1907.0     2.023     35.7
1908.0     2.030     35.3
1909.0     2.037     34.9
1910.0     2.044     34.5
1911.0     2.050     34.1
1912.0     2.057     33.8
1913.0     2.064     33.4
1914.0     2.071     33.0
1915.0     2.078     32.6
1916.0     2.085     32.2
1917.0     2.092     31.8
1918.0     2.099     31.5
1919.0     2.106     31.1
1920.0     2.113     30.7
1921.0     2.120     30.3
1922.0     2.127     30.0
1923.0     2.134     29.6
1924.0     2.141     29.3
1925.0     2.148     28.9
1926.0     2.155     28.5
1927.0     2.163     28.2
1928.0     2.170     27.8
1929.0     2.177     27.5
1930.0     2.184     27.1
1931.0     2.191     26.8
1932.0     2.198     26.5
1933.0     2.206     26.1
1934.0     2.213     25.8
1935.0     2.220     25.4
1936.0     2.227     25.1
1937.0     2.234     24.8
1938.0     2.241     24.4
1939.0     2.249     24.1
1940.0     2.256     23.8
1941.0     2.263     23.5
1942.0     2.270     23.1
1943.0     2.277     22.8
1944.0     2.284     22.5
1945.0     2.292     22.2
1946.0     2.299     21.9
1947.0     2.306     21.6
1948.0     2.313     21.3
1949.0     2.320     20.9
1950.0     2.327     20.6
1951.0     2.334     20.3
1952.0     2.341     20.0
1953.0     2.348     19.7
1954.0     2.355     19.4
1955.0     2.363     19.1
1956.0     2.370     18.8
1957.0     2.377     18.6
1958.0     2.383     18.3
1959.0     2.390     18.0
1960.0     2.397     17.7
1961.0     2.404     17.4
1962.0     2.411     17.1
1963.0     2.418     16.8
1964.0     2.425     16.5
1965.0     2.432     16.3
1966.0     2.438     16.0
1967.0     2.445     15.7
1968.0     2.452     15.4
1969.0     2.458     15.2
1970.0     2.465     14.9
1971.0     2.472     14.6
1972.0     2.478     14.4
1973.0     2.485     14.1
1974.0     2.491     13.8
1975.0     2.498     13.6
1976.0     2.504     13.3
1977.0     2.511     13.0
1978.0     2.517     12.8
1979.0     2.523     12.5
1980.0     2.530     12.2
1981.0     2.536     12.0
1982.0     2.542     11.7
1983.0     2.548     11.5
1984.0     2.554     11.2
1985.0     2.560     11.0
1986.0     2.566     10.7
1987.0     2.572     10.5
1988.0     2.578     10.2
1989.0     2.584     10.0
1990.0     2.590      9.7
1991.0     2.596      9.5
1992.0     2.601      9.2
1993.0     2.607      9.0
1994.0     2.612      8.8
1995.0     2.618      8.5
1996.0     2.623      8.3
1997.0     2.629      8.0
1998.0     2.634      7.8
1999.0     2.640      7.6
2000.0     2.645      7.3
2001.0     2.650      7.1
2002.0     2.655      6.8
2003.0     2.660      6.6
2004.0     2.665      6.4
2005.0     2.670      6.1
2006.0     2.675      5.9
2007.0     2.680      5.7
2008.0     2.684      5.5
2009.0     2.689      5.2
2010.0     2.694      5.0
2011.0     2.698      4.8
2012.0     2.702      4.5
2013.0     2.707      4.3
2014.0     2.711      4.1
2015.0     2.715      3.9
2016.0     2.719      3.7
2017.0     2.723      3.4
2018.0     2.727      3.2
2019.0     2.731      3.0
2020.0     2.735      2.8
2021.0     2.739      2.5
2022.0     2.742      2.3
2023.0     2.746      2.1
2024.0     2.749      1.9
2025.0     2.753      1.7
2026.0     2.756      1.4
2027.0     2.759      1.2
2028.0     2.762      1.0
2029.0     2.765      0.8
2030.0     2.768      0.6
2031.0     2.771      0.4
2032.0     2.774      0.2
2033.0     2.776    359.9
2034.0     2.779    359.7
2035.0     2.781    359.5
2036.0     2.783    359.3
2037.0     2.786    359.1
2038.0     2.788    358.9
2039.0     2.790    358.7
2040.0     2.792    358.4
2041.0     2.793    358.2
2042.0     2.795    358.0
2043.0     2.796    357.8
2044.0     2.798    357.6
2045.0     2.799    357.4
2046.0     2.800    357.2
2047.0     2.801    357.0
2048.0     2.802    356.8
2049.0     2.803    356.6
2050.0     2.804    356.3
2051.0     2.805    356.1
2052.0     2.805    355.9
2053.0     2.805    355.7
2054.0     2.805    355.5
2055.0     2.805    355.3
2056.0     2.805    355.1
2057.0     2.805    354.9
2058.0     2.805    354.7
2059.0     2.804    354.5
2060.0     2.804    354.2
2061.0     2.803    354.0
2062.0     2.802    353.8
2063.0     2.801    353.6
2064.0     2.800    353.4
2065.0     2.798    353.2
2066.0     2.797    353.0
2067.0     2.795    352.8
2068.0     2.793    352.6
2069.0     2.791    352.3
2070.0     2.789    352.1
2071.0     2.787    351.9
2072.0     2.784    351.7
2073.0     2.781    351.5
2074.0     2.779    351.3
2075.0     2.776    351.1
2076.0     2.772    350.9
2077.0     2.769    350.6
2078.0     2.765    350.4
2079.0     2.762    350.2
2080.0     2.758    350.0
2081.0     2.754    349.8
2082.0     2.749    349.6
2083.0     2.745    349.3
2084.0     2.740    349.1
2085.0     2.735    348.9
2086.0     2.730    348.7
2087.0     2.725    348.5
2088.0     2.719    348.2
2089.0     2.714    348.0
2090.0     2.708    347.8
2091.0     2.701    347.6
2092.0     2.695    347.3
2093.0     2.688    347.1
2094.0     2.681    346.9
2095.0     2.674    346.6
2096.0     2.667    346.4
2097.0     2.659    346.2
2098.0     2.652    345.9
2099.0     2.644    345.7
2100.0     2.635    345.5
2101.0     2.627    345.2
2102.0     2.618    345.0
2103.0     2.609    344.8
2104.0     2.599    344.5
2105.0     2.590    344.3
2106.0     2.580    344.0
2107.0     2.570    343.8
2108.0     2.559    343.5
2109.0     2.548    343.3
2110.0     2.537    343.0
2111.0     2.526    342.8
2112.0     2.514    342.5
2113.0     2.502    342.2
2114.0     2.490    342.0
2115.0     2.477    341.7
2116.0     2.464    341.4
2117.0     2.451    341.2
2118.0     2.437    340.9
2119.0     2.423    340.6
2120.0     2.409    340.3
2121.0     2.394    340.0
2122.0     2.379    339.7
2123.0     2.363    339.4
2124.0     2.347    339.1
2125.0     2.331    338.8
2126.0     2.315    338.5
2127.0     2.298    338.2
2128.0     2.280    337.9
2129.0     2.262    337.6
2130.0     2.244    337.3
2131.0     2.225    336.9
2132.0     2.206    336.6
2133.0     2.187    336.3
2134.0     2.166    335.9
2135.0     2.146    335.6
2136.0     2.125    335.2
2137.0     2.104    334.8
2138.0     2.082    334.4
2139.0     2.059    334.1
2140.0     2.036    333.7
2141.0     2.013    333.3
2142.0     1.989    332.9
2143.0     1.964    332.4
2144.0     1.939    332.0
2145.0     1.913    331.6
2146.0     1.887    331.1
2147.0     1.860    330.6
2148.0     1.833    330.1
2149.0     1.805    329.6
2150.0     1.777    329.1
2151.0     1.748    328.6
2152.0     1.718    328.0
2153.0     1.687    327.5
2154.0     1.657    326.9
2155.0     1.625    326.3
2156.0     1.593    325.6
2157.0     1.560    325.0
2158.0     1.526    324.3
2159.0     1.492    323.6
2160.0     1.457    322.8
2161.0     1.422    322.0
2162.0     1.386    321.2
2163.0     1.349    320.3
2164.0     1.312    319.3
2165.0     1.274    318.4
2166.0     1.236    317.3
2167.0     1.197    316.2
2168.0     1.157    315.0
2169.0     1.117    313.7
2170.0     1.077    312.4
2171.0     1.036    310.9
2172.0     0.995    309.3
2173.0     0.954    307.5
2174.0     0.913    305.6
2175.0     0.872    303.6
2176.0     0.831    301.3
2177.0     0.790    298.8
2178.0     0.751    296.0
2179.0     0.712    292.9
2180.0     0.675    289.5
2181.0     0.639    285.6
2182.0     0.606    281.4
2183.0     0.576    276.6
2184.0     0.549    271.4
2185.0     0.526    265.7
2186.0     0.508    259.5
2187.0     0.496    252.9
2188.0     0.489    246.1
2189.0     0.489    239.2
2190.0     0.495    232.4
2191.0     0.507    225.8
2192.0     0.525    219.6
2193.0     0.547    213.8
2194.0     0.573    208.5
2195.0     0.603    203.8
2196.0     0.636    199.5
2197.0     0.670    195.6
2198.0     0.707    192.1
2199.0     0.744    189.0
2200.0     0.782    186.1
2201.0     0.821    183.5
2202.0     0.859    181.2
2203.0     0.898    179.1
2204.0     0.937    177.1
2205.0     0.975    175.3
2206.0     1.012    173.6
2207.0     1.049    172.1
2208.0     1.085    170.6
2209.0     1.121    169.3
2210.0     1.155    168.0
2211.0     1.189    166.8
2212.0     1.222    165.6
2213.0     1.254    164.6
2214.0     1.284    163.5
2215.0     1.314    162.6
2216.0     1.343    161.6
2217.0     1.371    160.7
2218.0     1.398    159.9
2219.0     1.424    159.0
2220.0     1.449    158.2
2221.0     1.474    157.5
2222.0     1.497    156.7
2223.0     1.519    156.0
2224.0     1.541    155.3
2225.0     1.561    154.6
2226.0     1.581    153.9
2227.0     1.600    153.3
2228.0     1.618    152.7
2229.0     1.636    152.0
2230.0     1.653    151.4
2231.0     1.669    150.8
2232.0     1.684    150.2
2233.0     1.698    149.7
2234.0     1.712    149.1
2235.0     1.726    148.5
2236.0     1.738    148.0
2237.0     1.750    147.4
2238.0     1.762    146.9
2239.0     1.773    146.4
2240.0     1.783    145.9
2241.0     1.793    145.3
2242.0     1.802    144.8
2243.0     1.811    144.3
2244.0     1.820    143.8
2245.0     1.827    143.3
2246.0     1.835    142.8
2247.0     1.842    142.3
2248.0     1.848    141.9
2249.0     1.855    141.4
2250.0     1.860    140.9
2251.0     1.866    140.4
2252.0     1.871    139.9
2253.0     1.875    139.5
2254.0     1.880    139.0
2255.0     1.884    138.5
2256.0     1.887    138.1
2257.0     1.891    137.6
2258.0     1.894    137.2
2259.0     1.896    136.7
2260.0     1.899    136.2
2261.0     1.901    135.8
2262.0     1.903    135.3
2263.0     1.905    134.9
2264.0     1.906    134.4
2265.0     1.907    134.0
2266.0     1.908    133.5
2267.0     1.909    133.1
2268.0     1.909    132.6
2269.0     1.910    132.1
2270.0     1.910    131.7
2271.0     1.910    131.2
2272.0     1.910    130.8
2273.0     1.909    130.3
2274.0     1.909    129.9
2275.0     1.908    129.4
2276.0     1.907    129.0
2277.0     1.906    128.5
2278.0     1.905    128.1
2279.0     1.903    127.6
2280.0     1.902    127.2
2281.0     1.900    126.7
2282.0     1.898    126.2
2283.0     1.897    125.8
2284.0     1.895    125.3
2285.0     1.892    124.9
2286.0     1.890    124.4
2287.0     1.888    123.9
2288.0     1.886    123.5
2289.0     1.883    123.0
2290.0     1.881    122.5
2291.0     1.878    122.1
2292.0     1.875    121.6
2293.0     1.872    121.1
2294.0     1.870    120.7
2295.0     1.867    120.2
2296.0     1.864    119.7
2297.0     1.861    119.2
2298.0     1.858    118.8






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This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 4.0.


Acknowledgements
The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.


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