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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:07:34

Orbital Elements for STF2556
WDS: STF2556 WDS ID/Discoverer
P: 622.400 Orbital period (years)
a: 0.678 Semi-major axis (arcseconds)
i: 140.9 Inclination (degrees)
Ω: 44.5 Longitude of ascending node (degrees)
T: 1970.310 Epoch of periastron passage (year)
e: 0.476 Eccentricity
ω: 356.0 Longitude of periastron (degrees)
Start-Year: 1714.0 Year
End-Year: 2336.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF2556
Position: 193926.31+221523.4 Epoch-2000 right ascension and declination
WDS-ID: 19394+2215 WDS designation
Discoverer Code: STF2556 Discover designation and components
ADS number: 12752 Aitken Double Star catalog
HD number: 185661 HD catalog number
Hipparcos number: 96691 Hipparcos catalog number
V1: 7.71 Magnitude of the primary
V2: 8.92 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1997 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for STF2556



WDS 6th Orbit including measures of STF2556

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


Ephemeris of STF2556
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.384    331.6
-------------------------
1714.0     0.973    217.5
1715.0     0.972    217.3
1716.0     0.971    217.1
1717.0     0.970    216.9
1718.0     0.969    216.7
1719.0     0.967    216.5
1720.0     0.966    216.3
1721.0     0.965    216.1
1722.0     0.964    215.9
1723.0     0.962    215.7
1724.0     0.961    215.5
1725.0     0.960    215.3
1726.0     0.958    215.1
1727.0     0.957    214.9
1728.0     0.956    214.8
1729.0     0.954    214.6
1730.0     0.953    214.4
1731.0     0.951    214.2
1732.0     0.950    214.0
1733.0     0.948    213.8
1734.0     0.947    213.5
1735.0     0.945    213.3
1736.0     0.944    213.1
1737.0     0.942    212.9
1738.0     0.941    212.7
1739.0     0.939    212.5
1740.0     0.937    212.3
1741.0     0.936    212.1
1742.0     0.934    211.9
1743.0     0.932    211.7
1744.0     0.930    211.5
1745.0     0.929    211.3
1746.0     0.927    211.1
1747.0     0.925    210.9
1748.0     0.923    210.6
1749.0     0.921    210.4
1750.0     0.919    210.2
1751.0     0.918    210.0
1752.0     0.916    209.8
1753.0     0.914    209.6
1754.0     0.912    209.4
1755.0     0.910    209.1
1756.0     0.908    208.9
1757.0     0.906    208.7
1758.0     0.904    208.5
1759.0     0.902    208.2
1760.0     0.899    208.0
1761.0     0.897    207.8
1762.0     0.895    207.6
1763.0     0.893    207.3
1764.0     0.891    207.1
1765.0     0.889    206.9
1766.0     0.886    206.7
1767.0     0.884    206.4
1768.0     0.882    206.2
1769.0     0.879    206.0
1770.0     0.877    205.7
1771.0     0.875    205.5
1772.0     0.872    205.3
1773.0     0.870    205.0
1774.0     0.868    204.8
1775.0     0.865    204.5
1776.0     0.863    204.3
1777.0     0.860    204.0
1778.0     0.858    203.8
1779.0     0.855    203.5
1780.0     0.853    203.3
1781.0     0.850    203.0
1782.0     0.847    202.8
1783.0     0.845    202.5
1784.0     0.842    202.3
1785.0     0.839    202.0
1786.0     0.837    201.8
1787.0     0.834    201.5
1788.0     0.831    201.3
1789.0     0.829    201.0
1790.0     0.826    200.7
1791.0     0.823    200.5
1792.0     0.820    200.2
1793.0     0.817    199.9
1794.0     0.814    199.6
1795.0     0.812    199.4
1796.0     0.809    199.1
1797.0     0.806    198.8
1798.0     0.803    198.5
1799.0     0.800    198.3
1800.0     0.797    198.0
1801.0     0.794    197.7
1802.0     0.791    197.4
1803.0     0.788    197.1
1804.0     0.785    196.8
1805.0     0.781    196.5
1806.0     0.778    196.2
1807.0     0.775    195.9
1808.0     0.772    195.6
1809.0     0.769    195.3
1810.0     0.766    195.0
1811.0     0.762    194.7
1812.0     0.759    194.4
1813.0     0.756    194.1
1814.0     0.752    193.7
1815.0     0.749    193.4
1816.0     0.746    193.1
1817.0     0.742    192.8
1818.0     0.739    192.4
1819.0     0.736    192.1
1820.0     0.732    191.8
1821.0     0.729    191.4
1822.0     0.725    191.1
1823.0     0.722    190.7
1824.0     0.718    190.4
1825.0     0.715    190.0
1826.0     0.711    189.7
1827.0     0.708    189.3
1828.0     0.704    188.9
1829.0     0.701    188.6
1830.0     0.697    188.2
1831.0     0.693    187.8
1832.0     0.690    187.4
1833.0     0.686    187.1
1834.0     0.682    186.7
1835.0     0.679    186.3
1836.0     0.675    185.9
1837.0     0.671    185.5
1838.0     0.667    185.1
1839.0     0.664    184.7
1840.0     0.660    184.3
1841.0     0.656    183.8
1842.0     0.652    183.4
1843.0     0.648    183.0
1844.0     0.645    182.6
1845.0     0.641    182.1
1846.0     0.637    181.7
1847.0     0.633    181.2
1848.0     0.629    180.8
1849.0     0.625    180.3
1850.0     0.621    179.8
1851.0     0.617    179.4
1852.0     0.613    178.9
1853.0     0.609    178.4
1854.0     0.605    177.9
1855.0     0.601    177.4
1856.0     0.597    176.9
1857.0     0.593    176.4
1858.0     0.589    175.9
1859.0     0.585    175.3
1860.0     0.581    174.8
1861.0     0.577    174.3
1862.0     0.573    173.7
1863.0     0.569    173.2
1864.0     0.565    172.6
1865.0     0.561    172.0
1866.0     0.557    171.5
1867.0     0.553    170.9
1868.0     0.549    170.3
1869.0     0.545    169.7
1870.0     0.541    169.0
1871.0     0.537    168.4
1872.0     0.533    167.8
1873.0     0.529    167.1
1874.0     0.525    166.5
1875.0     0.521    165.8
1876.0     0.517    165.1
1877.0     0.513    164.5
1878.0     0.509    163.8
1879.0     0.505    163.1
1880.0     0.501    162.3
1881.0     0.497    161.6
1882.0     0.493    160.9
1883.0     0.489    160.1
1884.0     0.485    159.4
1885.0     0.481    158.6
1886.0     0.477    157.8
1887.0     0.473    157.0
1888.0     0.469    156.2
1889.0     0.465    155.3
1890.0     0.462    154.5
1891.0     0.458    153.6
1892.0     0.454    152.8
1893.0     0.450    151.9
1894.0     0.447    151.0
1895.0     0.443    150.0
1896.0     0.439    149.1
1897.0     0.436    148.2
1898.0     0.432    147.2
1899.0     0.429    146.2
1900.0     0.425    145.2
1901.0     0.422    144.2
1902.0     0.418    143.2
1903.0     0.415    142.1
1904.0     0.412    141.1
1905.0     0.409    140.0
1906.0     0.405    138.9
1907.0     0.402    137.8
1908.0     0.399    136.7
1909.0     0.396    135.5
1910.0     0.394    134.4
1911.0     0.391    133.2
1912.0     0.388    132.0
1913.0     0.385    130.8
1914.0     0.383    129.5
1915.0     0.380    128.3
1916.0     0.378    127.0
1917.0     0.375    125.7
1918.0     0.373    124.4
1919.0     0.371    123.1
1920.0     0.369    121.8
1921.0     0.367    120.5
1922.0     0.365    119.1
1923.0     0.363    117.7
1924.0     0.361    116.3
1925.0     0.359    114.9
1926.0     0.358    113.5
1927.0     0.356    112.1
1928.0     0.355    110.7
1929.0     0.354    109.2
1930.0     0.353    107.8
1931.0     0.351    106.3
1932.0     0.350    104.8
1933.0     0.350    103.4
1934.0     0.349    101.9
1935.0     0.348    100.4
1936.0     0.347     98.9
1937.0     0.347     97.4
1938.0     0.346     95.9
1939.0     0.346     94.3
1940.0     0.346     92.8
1941.0     0.345     91.3
1942.0     0.345     89.8
1943.0     0.345     88.3
1944.0     0.345     86.7
1945.0     0.345     85.2
1946.0     0.345     83.7
1947.0     0.345     82.2
1948.0     0.346     80.6
1949.0     0.346     79.1
1950.0     0.346     77.6
1951.0     0.346     76.1
1952.0     0.347     74.6
1953.0     0.347     73.1
1954.0     0.348     71.6
1955.0     0.348     70.1
1956.0     0.349     68.6
1957.0     0.349     67.1
1958.0     0.350     65.6
1959.0     0.350     64.1
1960.0     0.351     62.6
1961.0     0.351     61.2
1962.0     0.351     59.7
1963.0     0.352     58.2
1964.0     0.352     56.8
1965.0     0.353     55.3
1966.0     0.353     53.8
1967.0     0.354     52.4
1968.0     0.354     50.9
1969.0     0.354     49.5
1970.0     0.355     48.1
1971.0     0.355     46.6
1972.0     0.355     45.2
1973.0     0.356     43.7
1974.0     0.356     42.3
1975.0     0.356     40.9
1976.0     0.356     39.4
1977.0     0.356     38.0
1978.0     0.357     36.6
1979.0     0.357     35.2
1980.0     0.357     33.7
1981.0     0.357     32.3
1982.0     0.357     30.9
1983.0     0.357     29.5
1984.0     0.357     28.0
1985.0     0.357     26.6
1986.0     0.357     25.2
1987.0     0.357     23.8
1988.0     0.357     22.3
1989.0     0.357     20.9
1990.0     0.357     19.5
1991.0     0.357     18.1
1992.0     0.357     16.6
1993.0     0.357     15.2
1994.0     0.357     13.8
1995.0     0.357     12.4
1996.0     0.357     10.9
1997.0     0.357      9.5
1998.0     0.357      8.1
1999.0     0.358      6.7
2000.0     0.358      5.3
2001.0     0.358      3.8
2002.0     0.359      2.4
2003.0     0.359      1.0
2004.0     0.359    359.6
2005.0     0.360    358.2
2006.0     0.360    356.8
2007.0     0.361    355.4
2008.0     0.362    354.0
2009.0     0.363    352.6
2010.0     0.363    351.3
2011.0     0.364    349.9
2012.0     0.365    348.5
2013.0     0.366    347.2
2014.0     0.367    345.8
2015.0     0.368    344.5
2016.0     0.370    343.2
2017.0     0.371    341.8
2018.0     0.372    340.5
2019.0     0.374    339.2
2020.0     0.375    337.9
2021.0     0.377    336.6
2022.0     0.379    335.4
2023.0     0.380    334.1
2024.0     0.382    332.9
2025.0     0.384    331.6
2026.0     0.386    330.4
2027.0     0.388    329.2
2028.0     0.390    328.0
2029.0     0.392    326.8
2030.0     0.395    325.6
2031.0     0.397    324.5
2032.0     0.399    323.3
2033.0     0.402    322.2
2034.0     0.404    321.1
2035.0     0.407    320.0
2036.0     0.409    318.9
2037.0     0.412    317.8
2038.0     0.415    316.8
2039.0     0.418    315.7
2040.0     0.420    314.7
2041.0     0.423    313.7
2042.0     0.426    312.6
2043.0     0.429    311.7
2044.0     0.432    310.7
2045.0     0.435    309.7
2046.0     0.438    308.8
2047.0     0.442    307.8
2048.0     0.445    306.9
2049.0     0.448    306.0
2050.0     0.451    305.1
2051.0     0.455    304.2
2052.0     0.458    303.3
2053.0     0.461    302.5
2054.0     0.465    301.6
2055.0     0.468    300.8
2056.0     0.472    300.0
2057.0     0.475    299.2
2058.0     0.479    298.4
2059.0     0.482    297.6
2060.0     0.486    296.8
2061.0     0.489    296.0
2062.0     0.493    295.3
2063.0     0.497    294.5
2064.0     0.500    293.8
2065.0     0.504    293.1
2066.0     0.507    292.4
2067.0     0.511    291.7
2068.0     0.515    291.0
2069.0     0.519    290.3
2070.0     0.522    289.6
2071.0     0.526    289.0
2072.0     0.530    288.3
2073.0     0.533    287.7
2074.0     0.537    287.1
2075.0     0.541    286.4
2076.0     0.545    285.8
2077.0     0.548    285.2
2078.0     0.552    284.6
2079.0     0.556    284.0
2080.0     0.560    283.4
2081.0     0.564    282.9
2082.0     0.567    282.3
2083.0     0.571    281.7
2084.0     0.575    281.2
2085.0     0.579    280.6
2086.0     0.582    280.1
2087.0     0.586    279.6
2088.0     0.590    279.0
2089.0     0.594    278.5
2090.0     0.597    278.0
2091.0     0.601    277.5
2092.0     0.605    277.0
2093.0     0.609    276.5
2094.0     0.612    276.0
2095.0     0.616    275.5
2096.0     0.620    275.1
2097.0     0.623    274.6
2098.0     0.627    274.1
2099.0     0.631    273.7
2100.0     0.635    273.2
2101.0     0.638    272.8
2102.0     0.642    272.3
2103.0     0.646    271.9
2104.0     0.649    271.5
2105.0     0.653    271.0
2106.0     0.656    270.6
2107.0     0.660    270.2
2108.0     0.664    269.8
2109.0     0.667    269.4
2110.0     0.671    269.0
2111.0     0.674    268.6
2112.0     0.678    268.2
2113.0     0.681    267.8
2114.0     0.685    267.4
2115.0     0.688    267.0
2116.0     0.692    266.6
2117.0     0.695    266.2
2118.0     0.699    265.9
2119.0     0.702    265.5
2120.0     0.706    265.1
2121.0     0.709    264.8
2122.0     0.712    264.4
2123.0     0.716    264.1
2124.0     0.719    263.7
2125.0     0.722    263.4
2126.0     0.726    263.0
2127.0     0.729    262.7
2128.0     0.732    262.3
2129.0     0.736    262.0
2130.0     0.739    261.7
2131.0     0.742    261.3
2132.0     0.745    261.0
2133.0     0.749    260.7
2134.0     0.752    260.3
2135.0     0.755    260.0
2136.0     0.758    259.7
2137.0     0.761    259.4
2138.0     0.764    259.1
2139.0     0.767    258.8
2140.0     0.771    258.5
2141.0     0.774    258.2
2142.0     0.777    257.9
2143.0     0.780    257.6
2144.0     0.783    257.3
2145.0     0.786    257.0
2146.0     0.789    256.7
2147.0     0.792    256.4
2148.0     0.795    256.1
2149.0     0.797    255.8
2150.0     0.800    255.5
2151.0     0.803    255.2
2152.0     0.806    255.0
2153.0     0.809    254.7
2154.0     0.812    254.4
2155.0     0.814    254.1
2156.0     0.817    253.9
2157.0     0.820    253.6
2158.0     0.823    253.3
2159.0     0.825    253.1
2160.0     0.828    252.8
2161.0     0.831    252.5
2162.0     0.833    252.3
2163.0     0.836    252.0
2164.0     0.839    251.7
2165.0     0.841    251.5
2166.0     0.844    251.2
2167.0     0.846    251.0
2168.0     0.849    250.7
2169.0     0.852    250.5
2170.0     0.854    250.2
2171.0     0.856    250.0
2172.0     0.859    249.7
2173.0     0.861    249.5
2174.0     0.864    249.2
2175.0     0.866    249.0
2176.0     0.869    248.8
2177.0     0.871    248.5
2178.0     0.873    248.3
2179.0     0.876    248.0
2180.0     0.878    247.8
2181.0     0.880    247.6
2182.0     0.882    247.3
2183.0     0.885    247.1
2184.0     0.887    246.9
2185.0     0.889    246.6
2186.0     0.891    246.4
2187.0     0.893    246.2
2188.0     0.895    246.0
2189.0     0.897    245.7
2190.0     0.900    245.5
2191.0     0.902    245.3
2192.0     0.904    245.1
2193.0     0.906    244.8
2194.0     0.908    244.6
2195.0     0.910    244.4
2196.0     0.912    244.2
2197.0     0.913    244.0
2198.0     0.915    243.7
2199.0     0.917    243.5
2200.0     0.919    243.3
2201.0     0.921    243.1
2202.0     0.923    242.9
2203.0     0.925    242.7
2204.0     0.926    242.5
2205.0     0.928    242.2
2206.0     0.930    242.0
2207.0     0.932    241.8
2208.0     0.933    241.6
2209.0     0.935    241.4
2210.0     0.937    241.2
2211.0     0.938    241.0
2212.0     0.940    240.8
2213.0     0.942    240.6
2214.0     0.943    240.4
2215.0     0.945    240.2
2216.0     0.946    240.0
2217.0     0.948    239.8
2218.0     0.949    239.6
2219.0     0.951    239.4
2220.0     0.952    239.2
2221.0     0.954    239.0
2222.0     0.955    238.8
2223.0     0.956    238.6
2224.0     0.958    238.4
2225.0     0.959    238.2
2226.0     0.960    238.0
2227.0     0.962    237.8
2228.0     0.963    237.6
2229.0     0.964    237.4
2230.0     0.965    237.2
2231.0     0.967    237.0
2232.0     0.968    236.8
2233.0     0.969    236.6
2234.0     0.970    236.4
2235.0     0.971    236.2
2236.0     0.972    236.0
2237.0     0.973    235.8
2238.0     0.974    235.7
2239.0     0.975    235.5
2240.0     0.976    235.3
2241.0     0.977    235.1
2242.0     0.978    234.9
2243.0     0.979    234.7
2244.0     0.980    234.5
2245.0     0.981    234.3
2246.0     0.982    234.1
2247.0     0.983    234.0
2248.0     0.984    233.8
2249.0     0.985    233.6
2250.0     0.985    233.4
2251.0     0.986    233.2
2252.0     0.987    233.0
2253.0     0.988    232.8
2254.0     0.988    232.6
2255.0     0.989    232.5
2256.0     0.990    232.3
2257.0     0.991    232.1
2258.0     0.991    231.9
2259.0     0.992    231.7
2260.0     0.992    231.5
2261.0     0.993    231.3
2262.0     0.993    231.2
2263.0     0.994    231.0
2264.0     0.994    230.8
2265.0     0.995    230.6
2266.0     0.995    230.4
2267.0     0.996    230.2
2268.0     0.996    230.1
2269.0     0.997    229.9
2270.0     0.997    229.7
2271.0     0.997    229.5
2272.0     0.998    229.3
2273.0     0.998    229.2
2274.0     0.998    229.0
2275.0     0.999    228.8
2276.0     0.999    228.6
2277.0     0.999    228.4
2278.0     0.999    228.2
2279.0     0.999    228.1
2280.0     1.000    227.9
2281.0     1.000    227.7
2282.0     1.000    227.5
2283.0     1.000    227.3
2284.0     1.000    227.2
2285.0     1.000    227.0
2286.0     1.000    226.8
2287.0     1.000    226.6
2288.0     1.000    226.4
2289.0     1.000    226.2
2290.0     1.000    226.1
2291.0     1.000    225.9
2292.0     1.000    225.7
2293.0     1.000    225.5
2294.0     0.999    225.3
2295.0     0.999    225.2
2296.0     0.999    225.0
2297.0     0.999    224.8
2298.0     0.999    224.6
2299.0     0.998    224.4
2300.0     0.998    224.2
2301.0     0.998    224.1
2302.0     0.998    223.9
2303.0     0.997    223.7
2304.0     0.997    223.5
2305.0     0.996    223.3
2306.0     0.996    223.2
2307.0     0.996    223.0
2308.0     0.995    222.8
2309.0     0.995    222.6
2310.0     0.994    222.4
2311.0     0.994    222.2
2312.0     0.993    222.1
2313.0     0.993    221.9
2314.0     0.992    221.7
2315.0     0.991    221.5
2316.0     0.991    221.3
2317.0     0.990    221.1
2318.0     0.989    220.9
2319.0     0.989    220.8
2320.0     0.988    220.6
2321.0     0.987    220.4
2322.0     0.987    220.2
2323.0     0.986    220.0
2324.0     0.985    219.8
2325.0     0.984    219.6
2326.0     0.983    219.5
2327.0     0.982    219.3
2328.0     0.981    219.1
2329.0     0.981    218.9
2330.0     0.980    218.7
2331.0     0.979    218.5
2332.0     0.978    218.3
2333.0     0.977    218.1
2334.0     0.976    217.9
2335.0     0.975    217.7






Disclaimer
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.


www.stella-vega.de