Double Star Calculator - Orbit

Orbital Elements for STF2758AB
WDS: STF2758AB WDS ID/Discoverer
P: 664.370 Orbital period (years)
a: 24.36 Semi-major axis (arcseconds)
i: 53.29 Inclination (degrees)
Ω: 174.88 Longitude of ascending node (degrees)
T: 1700.370 Epoch of periastron passage (year)
e: 0.457 Eccentricity
ω: 149.32 Longitude of periastron (degrees)
Start-Year: 1692.815 Year
End-Year: 2357.185 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2758AB
Position: 210653.95+384457.9 Epoch-2000 right ascension and declination
WDS-ID: 21069+3845 WDS designation
Discoverer Code: STF2758AB Discover designation and components
ADS number: 14636 Aitken Double Star catalog
HD number: 201091 HD catalog number
Hipparcos number: 104214 Hipparcos catalog number
V1: 5.20 Magnitude of the primary
V2: 6.05 Magnitude of the secondary
Equinox: Equinox
Date: 2006 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: PkO2017b Reference

Double Star Orbit for STF2758AB



WDS 6th Orbit including measures of STF2758AB

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


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of STF2758AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50   32.112   154.36
--------------------------
1692.82   11.158   325.77
1693.82   11.281   327.13
1694.82   11.403   328.46
1695.82   11.525   329.76
1696.82   11.647   331.03
1697.82   11.767   332.28
1698.82   11.887   333.50
1699.82   12.005   334.70
1700.82   12.122   335.87
1701.82   12.237   337.03
1702.82   12.350   338.16
1703.82   12.461   339.27
1704.82   12.569   340.36
1705.82   12.675   341.43
1706.82   12.779   342.49
1707.82   12.879   343.53
1708.82   12.977   344.55
1709.82   13.072   345.56
1710.82   13.163   346.55
1711.82   13.252   347.53
1712.82   13.337   348.50
1713.82   13.419   349.45
1714.82   13.498   350.40
1715.82   13.573   351.33
1716.82   13.645   352.25
1717.82   13.714   353.17
1718.82   13.779   354.07
1719.82   13.841   354.97
1720.82   13.899   355.86
1721.82   13.954   356.74
1722.82   14.006   357.61
1723.82   14.054   358.48
1724.82   14.099   359.34
1725.82   14.141     0.20
1726.82   14.180     1.05
1727.82   14.215     1.90
1728.82   14.248     2.75
1729.82   14.277     3.59
1730.82   14.304     4.42
1731.82   14.328     5.26
1732.82   14.349     6.09
1733.82   14.367     6.92
1734.82   14.383     7.75
1735.82   14.396     8.57
1736.82   14.407     9.40
1737.82   14.416    10.22
1738.82   14.422    11.04
1739.82   14.426    11.86
1740.82   14.428    12.68
1741.82   14.428    13.51
1742.82   14.427    14.33
1743.82   14.423    15.15
1744.82   14.418    15.97
1745.82   14.411    16.79
1746.82   14.403    17.62
1747.82   14.393    18.44
1748.82   14.383    19.27
1749.82   14.371    20.10
1750.82   14.357    20.92
1751.82   14.343    21.75
1752.82   14.328    22.59
1753.82   14.312    23.42
1754.82   14.296    24.26
1755.82   14.278    25.09
1756.82   14.261    25.93
1757.82   14.242    26.77
1758.82   14.224    27.62
1759.82   14.205    28.46
1760.82   14.185    29.31
1761.82   14.166    30.16
1762.82   14.147    31.02
1763.82   14.127    31.87
1764.82   14.108    32.73
1765.82   14.089    33.59
1766.82   14.070    34.45
1767.82   14.052    35.32
1768.82   14.034    36.18
1769.82   14.016    37.05
1770.82   13.999    37.92
1771.82   13.983    38.80
1772.82   13.967    39.67
1773.82   13.952    40.55
1774.82   13.937    41.43
1775.82   13.924    42.31
1776.82   13.911    43.19
1777.82   13.900    44.08
1778.82   13.889    44.96
1779.82   13.880    45.85
1780.82   13.871    46.74
1781.82   13.864    47.63
1782.82   13.858    48.52
1783.82   13.853    49.41
1784.82   13.849    50.30
1785.82   13.847    51.19
1786.82   13.846    52.08
1787.82   13.846    52.97
1788.82   13.848    53.87
1789.82   13.851    54.76
1790.82   13.856    55.65
1791.82   13.862    56.54
1792.82   13.870    57.43
1793.82   13.880    58.32
1794.82   13.890    59.20
1795.82   13.903    60.09
1796.82   13.917    60.97
1797.82   13.933    61.85
1798.82   13.950    62.73
1799.82   13.969    63.61
1800.82   13.990    64.48
1801.82   14.012    65.36
1802.82   14.036    66.23
1803.82   14.061    67.09
1804.82   14.089    67.96
1805.82   14.118    68.81
1806.82   14.148    69.67
1807.82   14.181    70.52
1808.82   14.215    71.37
1809.82   14.250    72.22
1810.82   14.288    73.05
1811.82   14.326    73.89
1812.82   14.367    74.72
1813.82   14.409    75.55
1814.82   14.453    76.37
1815.82   14.498    77.18
1816.82   14.545    77.99
1817.82   14.594    78.80
1818.82   14.644    79.60
1819.82   14.695    80.39
1820.82   14.749    81.18
1821.82   14.803    81.97
1822.82   14.859    82.74
1823.82   14.917    83.51
1824.82   14.976    84.28
1825.82   15.036    85.04
1826.82   15.098    85.79
1827.82   15.162    86.54
1828.82   15.226    87.28
1829.82   15.292    88.01
1830.82   15.359    88.74
1831.82   15.428    89.46
1832.82   15.497    90.18
1833.82   15.568    90.89
1834.82   15.641    91.59
1835.82   15.714    92.28
1836.82   15.788    92.97
1837.82   15.864    93.66
1838.82   15.941    94.33
1839.82   16.019    95.00
1840.82   16.098    95.67
1841.82   16.178    96.32
1842.82   16.259    96.97
1843.82   16.340    97.62
1844.82   16.423    98.25
1845.82   16.507    98.88
1846.82   16.592    99.51
1847.82   16.677   100.13
1848.82   16.764   100.74
1849.82   16.851   101.34
1850.82   16.939   101.94
1851.82   17.028   102.53
1852.82   17.118   103.12
1853.82   17.208   103.70
1854.82   17.299   104.27
1855.82   17.391   104.84
1856.82   17.483   105.41
1857.82   17.577   105.96
1858.82   17.670   106.51
1859.82   17.765   107.06
1860.82   17.859   107.60
1861.82   17.955   108.13
1862.82   18.051   108.66
1863.82   18.147   109.18
1864.82   18.244   109.69
1865.82   18.342   110.21
1866.82   18.440   110.71
1867.82   18.538   111.21
1868.82   18.637   111.71
1869.82   18.736   112.20
1870.82   18.835   112.68
1871.82   18.935   113.16
1872.82   19.036   113.63
1873.82   19.136   114.10
1874.82   19.237   114.57
1875.82   19.338   115.03
1876.82   19.439   115.48
1877.82   19.541   115.93
1878.82   19.643   116.38
1879.82   19.745   116.82
1880.82   19.847   117.25
1881.82   19.950   117.69
1882.82   20.053   118.11
1883.82   20.155   118.54
1884.82   20.258   118.96
1885.82   20.361   119.37
1886.82   20.465   119.78
1887.82   20.568   120.19
1888.82   20.671   120.59
1889.82   20.775   120.99
1890.82   20.878   121.38
1891.82   20.982   121.77
1892.82   21.085   122.16
1893.82   21.189   122.54
1894.82   21.293   122.92
1895.82   21.396   123.29
1896.82   21.500   123.67
1897.82   21.604   124.03
1898.82   21.707   124.40
1899.82   21.811   124.76
1900.82   21.914   125.12
1901.82   22.017   125.47
1902.82   22.121   125.82
1903.82   22.224   126.17
1904.82   22.327   126.51
1905.82   22.430   126.86
1906.82   22.533   127.19
1907.82   22.635   127.53
1908.82   22.738   127.86
1909.82   22.840   128.19
1910.82   22.943   128.52
1911.82   23.045   128.84
1912.82   23.147   129.16
1913.82   23.248   129.48
1914.82   23.350   129.79
1915.82   23.451   130.11
1916.82   23.552   130.42
1917.82   23.653   130.72
1918.82   23.754   131.03
1919.82   23.854   131.33
1920.82   23.954   131.63
1921.82   24.054   131.92
1922.82   24.154   132.22
1923.82   24.253   132.51
1924.82   24.352   132.80
1925.82   24.451   133.09
1926.82   24.550   133.37
1927.82   24.648   133.65
1928.82   24.746   133.93
1929.82   24.843   134.21
1930.82   24.941   134.49
1931.82   25.038   134.76
1932.82   25.135   135.03
1933.82   25.231   135.30
1934.82   25.327   135.57
1935.82   25.423   135.84
1936.82   25.518   136.10
1937.82   25.613   136.36
1938.82   25.707   136.62
1939.82   25.802   136.88
1940.82   25.896   137.14
1941.82   25.989   137.39
1942.82   26.082   137.64
1943.82   26.175   137.89
1944.82   26.267   138.14
1945.82   26.359   138.39
1946.82   26.451   138.63
1947.82   26.542   138.88
1948.82   26.632   139.12
1949.82   26.723   139.36
1950.82   26.813   139.60
1951.82   26.902   139.83
1952.82   26.991   140.07
1953.82   27.080   140.30
1954.82   27.168   140.54
1955.82   27.255   140.77
1956.82   27.343   141.00
1957.82   27.429   141.22
1958.82   27.516   141.45
1959.82   27.602   141.68
1960.82   27.687   141.90
1961.82   27.772   142.12
1962.82   27.856   142.34
1963.82   27.940   142.56
1964.82   28.024   142.78
1965.82   28.107   143.00
1966.82   28.189   143.21
1967.82   28.271   143.43
1968.82   28.353   143.64
1969.82   28.434   143.85
1970.82   28.515   144.06
1971.82   28.595   144.27
1972.82   28.674   144.48
1973.82   28.753   144.69
1974.82   28.832   144.90
1975.82   28.910   145.10
1976.82   28.987   145.31
1977.82   29.064   145.51
1978.82   29.140   145.71
1979.82   29.216   145.91
1980.82   29.291   146.11
1981.82   29.366   146.31
1982.82   29.440   146.51
1983.82   29.514   146.70
1984.82   29.587   146.90
1985.82   29.660   147.09
1986.82   29.732   147.29
1987.82   29.803   147.48
1988.82   29.874   147.67
1989.82   29.945   147.86
1990.82   30.014   148.05
1991.82   30.084   148.24
1992.82   30.152   148.43
1993.82   30.220   148.62
1994.82   30.288   148.81
1995.82   30.355   148.99
1996.82   30.421   149.18
1997.82   30.487   149.36
1998.82   30.552   149.55
1999.82   30.617   149.73
2000.82   30.681   149.91
2001.82   30.744   150.09
2002.82   30.807   150.27
2003.82   30.869   150.45
2004.82   30.930   150.63
2005.82   30.991   150.81
2006.82   31.052   150.99
2007.82   31.112   151.16
2008.82   31.171   151.34
2009.82   31.229   151.52
2010.82   31.287   151.69
2011.82   31.344   151.87
2012.82   31.401   152.04
2013.82   31.457   152.21
2014.82   31.512   152.38
2015.82   31.567   152.56
2016.82   31.621   152.73
2017.82   31.675   152.90
2018.82   31.727   153.07
2019.82   31.780   153.24
2020.82   31.831   153.41
2021.82   31.882   153.58
2022.82   31.932   153.74
2023.82   31.982   153.91
2024.82   32.031   154.08
2025.82   32.079   154.24
2026.82   32.127   154.41
2027.82   32.174   154.58
2028.82   32.220   154.74
2029.82   32.266   154.90
2030.82   32.311   155.07
2031.82   32.355   155.23
2032.82   32.399   155.40
2033.82   32.442   155.56
2034.82   32.484   155.72
2035.82   32.526   155.88
2036.82   32.566   156.04
2037.82   32.607   156.20
2038.82   32.646   156.37
2039.82   32.685   156.53
2040.82   32.723   156.69
2041.82   32.761   156.84
2042.82   32.797   157.00
2043.82   32.834   157.16
2044.82   32.869   157.32
2045.82   32.904   157.48
2046.82   32.938   157.64
2047.82   32.971   157.79
2048.82   33.003   157.95
2049.82   33.035   158.11
2050.82   33.066   158.26
2051.82   33.097   158.42
2052.82   33.126   158.58
2053.82   33.155   158.73
2054.82   33.184   158.89
2055.82   33.211   159.04
2056.82   33.238   159.20
2057.82   33.264   159.35
2058.82   33.289   159.51
2059.82   33.314   159.66
2060.82   33.338   159.82
2061.82   33.361   159.97
2062.82   33.383   160.12
2063.82   33.405   160.28
2064.82   33.426   160.43
2065.82   33.446   160.58
2066.82   33.465   160.73
2067.82   33.484   160.89
2068.82   33.502   161.04
2069.82   33.519   161.19
2070.82   33.535   161.34
2071.82   33.551   161.50
2072.82   33.566   161.65
2073.82   33.580   161.80
2074.82   33.593   161.95
2075.82   33.606   162.10
2076.82   33.617   162.25
2077.82   33.628   162.40
2078.82   33.639   162.56
2079.82   33.648   162.71
2080.82   33.657   162.86
2081.82   33.665   163.01
2082.82   33.672   163.16
2083.82   33.678   163.31
2084.82   33.683   163.46
2085.82   33.688   163.61
2086.82   33.692   163.76
2087.82   33.695   163.91
2088.82   33.697   164.06
2089.82   33.699   164.21
2090.82   33.699   164.36
2091.82   33.699   164.52
2092.82   33.698   164.67
2093.82   33.697   164.82
2094.82   33.694   164.97
2095.82   33.691   165.12
2096.82   33.686   165.27
2097.82   33.681   165.42
2098.82   33.675   165.57
2099.82   33.669   165.72
2100.82   33.661   165.87
2101.82   33.653   166.02
2102.82   33.643   166.17
2103.82   33.633   166.32
2104.82   33.622   166.48
2105.82   33.611   166.63
2106.82   33.598   166.78
2107.82   33.585   166.93
2108.82   33.570   167.08
2109.82   33.555   167.23
2110.82   33.539   167.38
2111.82   33.522   167.54
2112.82   33.504   167.69
2113.82   33.486   167.84
2114.82   33.466   167.99
2115.82   33.446   168.15
2116.82   33.425   168.30
2117.82   33.402   168.45
2118.82   33.379   168.61
2119.82   33.356   168.76
2120.82   33.331   168.91
2121.82   33.305   169.07
2122.82   33.279   169.22
2123.82   33.251   169.38
2124.82   33.223   169.53
2125.82   33.193   169.69
2126.82   33.163   169.84
2127.82   33.132   170.00
2128.82   33.100   170.15
2129.82   33.067   170.31
2130.82   33.033   170.47
2131.82   32.999   170.62
2132.82   32.963   170.78
2133.82   32.927   170.94
2134.82   32.889   171.10
2135.82   32.851   171.25
2136.82   32.811   171.41
2137.82   32.771   171.57
2138.82   32.730   171.73
2139.82   32.687   171.89
2140.82   32.644   172.05
2141.82   32.600   172.21
2142.82   32.555   172.37
2143.82   32.509   172.53
2144.82   32.462   172.70
2145.82   32.414   172.86
2146.82   32.365   173.02
2147.82   32.316   173.18
2148.82   32.265   173.35
2149.82   32.213   173.51
2150.82   32.160   173.68
2151.82   32.106   173.84
2152.82   32.052   174.01
2153.82   31.996   174.18
2154.82   31.939   174.34
2155.82   31.881   174.51
2156.82   31.823   174.68
2157.82   31.763   174.85
2158.82   31.702   175.02
2159.82   31.641   175.19
2160.82   31.578   175.36
2161.82   31.514   175.53
2162.82   31.449   175.70
2163.82   31.384   175.88
2164.82   31.317   176.05
2165.82   31.249   176.23
2166.82   31.180   176.40
2167.82   31.110   176.58
2168.82   31.039   176.76
2169.82   30.967   176.93
2170.82   30.894   177.11
2171.82   30.820   177.29
2172.82   30.745   177.47
2173.82   30.669   177.65
2174.82   30.592   177.84
2175.82   30.513   178.02
2176.82   30.434   178.20
2177.82   30.354   178.39
2178.82   30.272   178.57
2179.82   30.189   178.76
2180.82   30.106   178.95
2181.82   30.021   179.14
2182.82   29.935   179.33
2183.82   29.848   179.52
2184.82   29.760   179.71
2185.82   29.671   179.91
2186.82   29.581   180.10
2187.82   29.490   180.30
2188.82   29.397   180.49
2189.82   29.304   180.69
2190.82   29.209   180.89
2191.82   29.114   181.09
2192.82   29.017   181.30
2193.82   28.919   181.50
2194.82   28.820   181.70
2195.82   28.720   181.91
2196.82   28.618   182.12
2197.82   28.516   182.33
2198.82   28.412   182.54
2199.82   28.307   182.75
2200.82   28.201   182.97
2201.82   28.094   183.18
2202.82   27.986   183.40
2203.82   27.877   183.62
2204.82   27.766   183.84
2205.82   27.655   184.06
2206.82   27.542   184.29
2207.82   27.428   184.51
2208.82   27.313   184.74
2209.82   27.197   184.97
2210.82   27.079   185.20
2211.82   26.960   185.44
2212.82   26.841   185.67
2213.82   26.720   185.91
2214.82   26.597   186.15
2215.82   26.474   186.40
2216.82   26.350   186.64
2217.82   26.224   186.89
2218.82   26.097   187.14
2219.82   25.969   187.39
2220.82   25.840   187.65
2221.82   25.709   187.90
2222.82   25.577   188.16
2223.82   25.445   188.43
2224.82   25.310   188.69
2225.82   25.175   188.96
2226.82   25.039   189.23
2227.82   24.901   189.50
2228.82   24.762   189.78
2229.82   24.622   190.06
2230.82   24.481   190.35
2231.82   24.339   190.63
2232.82   24.195   190.92
2233.82   24.050   191.22
2234.82   23.904   191.51
2235.82   23.757   191.82
2236.82   23.609   192.12
2237.82   23.459   192.43
2238.82   23.308   192.74
2239.82   23.156   193.06
2240.82   23.003   193.38
2241.82   22.849   193.70
2242.82   22.694   194.03
2243.82   22.537   194.37
2244.82   22.379   194.71
2245.82   22.220   195.05
2246.82   22.060   195.40
2247.82   21.899   195.75
2248.82   21.737   196.11
2249.82   21.573   196.48
2250.82   21.409   196.85
2251.82   21.243   197.22
2252.82   21.076   197.61
2253.82   20.908   197.99
2254.82   20.739   198.39
2255.82   20.569   198.79
2256.82   20.398   199.20
2257.82   20.226   199.61
2258.82   20.053   200.03
2259.82   19.879   200.46
2260.82   19.704   200.90
2261.82   19.528   201.34
2262.82   19.351   201.79
2263.82   19.173   202.25
2264.82   18.994   202.72
2265.82   18.814   203.20
2266.82   18.634   203.69
2267.82   18.452   204.19
2268.82   18.270   204.69
2269.82   18.087   205.21
2270.82   17.904   205.74
2271.82   17.719   206.28
2272.82   17.534   206.83
2273.82   17.348   207.39
2274.82   17.162   207.97
2275.82   16.975   208.55
2276.82   16.788   209.15
2277.82   16.600   209.77
2278.82   16.412   210.39
2279.82   16.223   211.04
2280.82   16.034   211.69
2281.82   15.845   212.37
2282.82   15.656   213.05
2283.82   15.467   213.76
2284.82   15.278   214.48
2285.82   15.088   215.23
2286.82   14.899   215.99
2287.82   14.710   216.77
2288.82   14.522   217.57
2289.82   14.334   218.39
2290.82   14.146   219.23
2291.82   13.959   220.10
2292.82   13.773   220.99
2293.82   13.588   221.90
2294.82   13.403   222.84
2295.82   13.220   223.80
2296.82   13.038   224.79
2297.82   12.858   225.81
2298.82   12.679   226.86
2299.82   12.502   227.94
2300.82   12.327   229.05
2301.82   12.154   230.19
2302.82   11.983   231.37
2303.82   11.815   232.57
2304.82   11.649   233.82
2305.82   11.487   235.09
2306.82   11.327   236.41
2307.82   11.171   237.76
2308.82   11.019   239.15
2309.82   10.870   240.58
2310.82   10.726   242.04
2311.82   10.586   243.55
2312.82   10.451   245.09
2313.82   10.320   246.68
2314.82   10.195   248.30
2315.82   10.076   249.97
2316.82    9.962   251.67
2317.82    9.855   253.41
2318.82    9.753   255.19
2319.82    9.659   257.01
2320.82    9.571   258.86
2321.82    9.490   260.74
2322.82    9.417   262.65
2323.82    9.351   264.60
2324.82    9.293   266.56
2325.82    9.243   268.55
2326.82    9.201   270.56
2327.82    9.166   272.59
2328.82    9.141   274.63
2329.82    9.123   276.68
2330.82    9.114   278.74
2331.82    9.113   280.80
2332.82    9.120   282.86
2333.82    9.135   284.91
2334.82    9.158   286.95
2335.82    9.189   288.98
2336.82    9.228   291.00
2337.82    9.274   293.00
2338.82    9.327   294.98
2339.82    9.387   296.93
2340.82    9.453   298.86
2341.82    9.526   300.75
2342.82    9.604   302.62
2343.82    9.688   304.46
2344.82    9.777   306.27
2345.82    9.871   308.04
2346.82    9.970   309.77
2347.82   10.072   311.48
2348.82   10.178   313.14
2349.82   10.288   314.78
2350.82   10.400   316.38
2351.82   10.514   317.94
2352.82   10.631   319.47
2353.82   10.750   320.96
2354.82   10.870   322.43
2355.82   10.991   323.86
2356.82   11.113   325.26






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 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.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 18:22:42



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