Double Star Calculator - Orbit

Orbital Elements for STT251
WDS: STT251 WDS ID/Discoverer
P: 540.560 Orbital period (years)
a: 0.553 Semi-major axis (arcseconds)
i: 33.4 Inclination (degrees)
Ω: 165.1 Longitude of ascending node (degrees)
T: 1894.330 Epoch of periastron passage (year)
e: 0.855 Eccentricity
ω: 96.0 Longitude of periastron (degrees)
Start-Year: 1754.72 Year
End-Year: 2295.2799999999997 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT251
Position: 122907.72+312325.4 Epoch-2000 right ascension and declination
WDS-ID: 12291+3123 WDS designation
Discoverer Code: STT251 Discover designation and components
ADS number: 8569 Aitken Double Star catalog
HD number: 108693 HD catalog number
Hipparcos number: 60920 Hipparcos catalog number
V1: 8.35 Magnitude of the primary
V2: 9.27 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1997 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Sca2003c Reference

Double Star Orbit for STT251



WDS 6th Orbit including measures of STT251

-- 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 STT251
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.704    63.37
--------------------------
1754.72    0.736    99.51
1755.72    0.734    99.67
1756.72    0.732    99.83
1757.72    0.730   100.00
1758.72    0.728   100.16
1759.72    0.726   100.33
1760.72    0.724   100.50
1761.72    0.721   100.67
1762.72    0.719   100.84
1763.72    0.717   101.01
1764.72    0.715   101.18
1765.72    0.712   101.35
1766.72    0.710   101.53
1767.72    0.708   101.70
1768.72    0.705   101.88
1769.72    0.703   102.06
1770.72    0.701   102.24
1771.72    0.698   102.42
1772.72    0.696   102.60
1773.72    0.693   102.78
1774.72    0.691   102.97
1775.72    0.688   103.15
1776.72    0.686   103.34
1777.72    0.683   103.53
1778.72    0.681   103.72
1779.72    0.678   103.91
1780.72    0.675   104.10
1781.72    0.673   104.29
1782.72    0.670   104.49
1783.72    0.667   104.69
1784.72    0.665   104.88
1785.72    0.662   105.09
1786.72    0.659   105.29
1787.72    0.656   105.49
1788.72    0.653   105.70
1789.72    0.651   105.90
1790.72    0.648   106.11
1791.72    0.645   106.32
1792.72    0.642   106.54
1793.72    0.639   106.75
1794.72    0.636   106.97
1795.72    0.633   107.19
1796.72    0.630   107.41
1797.72    0.627   107.63
1798.72    0.624   107.86
1799.72    0.620   108.09
1800.72    0.617   108.32
1801.72    0.614   108.55
1802.72    0.611   108.79
1803.72    0.607   109.02
1804.72    0.604   109.26
1805.72    0.601   109.51
1806.72    0.597   109.75
1807.72    0.594   110.00
1808.72    0.591   110.25
1809.72    0.587   110.51
1810.72    0.584   110.76
1811.72    0.580   111.02
1812.72    0.577   111.29
1813.72    0.573   111.55
1814.72    0.569   111.82
1815.72    0.566   112.10
1816.72    0.562   112.38
1817.72    0.558   112.66
1818.72    0.554   112.94
1819.72    0.551   113.23
1820.72    0.547   113.52
1821.72    0.543   113.82
1822.72    0.539   114.12
1823.72    0.535   114.43
1824.72    0.531   114.74
1825.72    0.527   115.05
1826.72    0.523   115.37
1827.72    0.519   115.70
1828.72    0.514   116.03
1829.72    0.510   116.37
1830.72    0.506   116.71
1831.72    0.502   117.06
1832.72    0.497   117.41
1833.72    0.493   117.77
1834.72    0.488   118.14
1835.72    0.484   118.51
1836.72    0.479   118.89
1837.72    0.475   119.28
1838.72    0.470   119.67
1839.72    0.465   120.08
1840.72    0.460   120.49
1841.72    0.456   120.91
1842.72    0.451   121.34
1843.72    0.446   121.78
1844.72    0.441   122.22
1845.72    0.436   122.68
1846.72    0.430   123.15
1847.72    0.425   123.64
1848.72    0.420   124.13
1849.72    0.415   124.64
1850.72    0.409   125.16
1851.72    0.404   125.69
1852.72    0.398   126.24
1853.72    0.393   126.80
1854.72    0.387   127.38
1855.72    0.381   127.98
1856.72    0.375   128.60
1857.72    0.369   129.23
1858.72    0.363   129.89
1859.72    0.357   130.57
1860.72    0.351   131.28
1861.72    0.344   132.01
1862.72    0.338   132.76
1863.72    0.331   133.55
1864.72    0.325   134.37
1865.72    0.318   135.22
1866.72    0.311   136.11
1867.72    0.304   137.05
1868.72    0.297   138.02
1869.72    0.290   139.05
1870.72    0.282   140.12
1871.72    0.275   141.26
1872.72    0.267   142.46
1873.72    0.259   143.74
1874.72    0.251   145.10
1875.72    0.243   146.54
1876.72    0.234   148.09
1877.72    0.226   149.76
1878.72    0.217   151.57
1879.72    0.207   153.53
1880.72    0.198   155.67
1881.72    0.188   158.04
1882.72    0.178   160.66
1883.72    0.168   163.59
1884.72    0.158   166.91
1885.72    0.147   170.72
1886.72    0.136   175.14
1887.72    0.124   180.37
1888.72    0.113   186.67
1889.72    0.101   194.42
1890.72    0.090   204.13
1891.72    0.080   216.47
1892.72    0.072   231.96
1893.72    0.067   250.34
1894.72    0.068   269.85
1895.72    0.073   287.92
1896.72    0.081   303.04
1897.72    0.091   315.10
1898.72    0.102   324.69
1899.72    0.113   332.40
1900.72    0.124   338.74
1901.72    0.134   344.06
1902.72    0.145   348.60
1903.72    0.155   352.53
1904.72    0.165   355.99
1905.72    0.174   359.06
1906.72    0.184     1.82
1907.72    0.193     4.31
1908.72    0.201     6.59
1909.72    0.210     8.67
1910.72    0.218    10.60
1911.72    0.226    12.38
1912.72    0.234    14.05
1913.72    0.242    15.60
1914.72    0.250    17.06
1915.72    0.257    18.43
1916.72    0.264    19.73
1917.72    0.272    20.96
1918.72    0.279    22.13
1919.72    0.285    23.23
1920.72    0.292    24.29
1921.72    0.299    25.30
1922.72    0.305    26.27
1923.72    0.312    27.19
1924.72    0.318    28.08
1925.72    0.324    28.93
1926.72    0.331    29.76
1927.72    0.337    30.55
1928.72    0.343    31.31
1929.72    0.349    32.05
1930.72    0.354    32.76
1931.72    0.360    33.46
1932.72    0.366    34.13
1933.72    0.371    34.77
1934.72    0.377    35.40
1935.72    0.382    36.02
1936.72    0.388    36.61
1937.72    0.393    37.19
1938.72    0.398    37.75
1939.72    0.403    38.30
1940.72    0.408    38.84
1941.72    0.414    39.36
1942.72    0.419    39.87
1943.72    0.423    40.37
1944.72    0.428    40.85
1945.72    0.433    41.33
1946.72    0.438    41.79
1947.72    0.443    42.25
1948.72    0.447    42.69
1949.72    0.452    43.13
1950.72    0.457    43.56
1951.72    0.461    43.98
1952.72    0.466    44.39
1953.72    0.470    44.79
1954.72    0.474    45.19
1955.72    0.479    45.57
1956.72    0.483    45.95
1957.72    0.487    46.33
1958.72    0.492    46.70
1959.72    0.496    47.06
1960.72    0.500    47.42
1961.72    0.504    47.77
1962.72    0.508    48.11
1963.72    0.512    48.45
1964.72    0.516    48.78
1965.72    0.520    49.11
1966.72    0.524    49.44
1967.72    0.528    49.75
1968.72    0.532    50.07
1969.72    0.535    50.38
1970.72    0.539    50.68
1971.72    0.543    50.99
1972.72    0.547    51.28
1973.72    0.550    51.58
1974.72    0.554    51.87
1975.72    0.557    52.15
1976.72    0.561    52.43
1977.72    0.565    52.71
1978.72    0.568    52.99
1979.72    0.571    53.26
1980.72    0.575    53.53
1981.72    0.578    53.79
1982.72    0.582    54.05
1983.72    0.585    54.31
1984.72    0.588    54.57
1985.72    0.592    54.82
1986.72    0.595    55.07
1987.72    0.598    55.32
1988.72    0.601    55.57
1989.72    0.605    55.81
1990.72    0.608    56.05
1991.72    0.611    56.29
1992.72    0.614    56.52
1993.72    0.617    56.75
1994.72    0.620    56.98
1995.72    0.623    57.21
1996.72    0.626    57.44
1997.72    0.629    57.66
1998.72    0.632    57.88
1999.72    0.635    58.10
2000.72    0.638    58.32
2001.72    0.641    58.54
2002.72    0.643    58.75
2003.72    0.646    58.96
2004.72    0.649    59.17
2005.72    0.652    59.38
2006.72    0.655    59.59
2007.72    0.657    59.79
2008.72    0.660    60.00
2009.72    0.663    60.20
2010.72    0.665    60.40
2011.72    0.668    60.60
2012.72    0.671    60.79
2013.72    0.673    60.99
2014.72    0.676    61.18
2015.72    0.678    61.38
2016.72    0.681    61.57
2017.72    0.683    61.76
2018.72    0.686    61.94
2019.72    0.688    62.13
2020.72    0.691    62.32
2021.72    0.693    62.50
2022.72    0.695    62.68
2023.72    0.698    62.87
2024.72    0.700    63.05
2025.72    0.702    63.23
2026.72    0.705    63.40
2027.72    0.707    63.58
2028.72    0.709    63.76
2029.72    0.711    63.93
2030.72    0.714    64.11
2031.72    0.716    64.28
2032.72    0.718    64.45
2033.72    0.720    64.62
2034.72    0.722    64.79
2035.72    0.724    64.96
2036.72    0.727    65.13
2037.72    0.729    65.29
2038.72    0.731    65.46
2039.72    0.733    65.62
2040.72    0.735    65.79
2041.72    0.737    65.95
2042.72    0.739    66.11
2043.72    0.741    66.27
2044.72    0.743    66.43
2045.72    0.745    66.59
2046.72    0.747    66.75
2047.72    0.748    66.91
2048.72    0.750    67.07
2049.72    0.752    67.22
2050.72    0.754    67.38
2051.72    0.756    67.53
2052.72    0.758    67.69
2053.72    0.759    67.84
2054.72    0.761    67.99
2055.72    0.763    68.14
2056.72    0.765    68.29
2057.72    0.766    68.44
2058.72    0.768    68.59
2059.72    0.770    68.74
2060.72    0.771    68.89
2061.72    0.773    69.04
2062.72    0.775    69.19
2063.72    0.776    69.33
2064.72    0.778    69.48
2065.72    0.780    69.63
2066.72    0.781    69.77
2067.72    0.783    69.91
2068.72    0.784    70.06
2069.72    0.786    70.20
2070.72    0.787    70.34
2071.72    0.789    70.49
2072.72    0.790    70.63
2073.72    0.792    70.77
2074.72    0.793    70.91
2075.72    0.794    71.05
2076.72    0.796    71.19
2077.72    0.797    71.33
2078.72    0.799    71.47
2079.72    0.800    71.60
2080.72    0.801    71.74
2081.72    0.802    71.88
2082.72    0.804    72.02
2083.72    0.805    72.15
2084.72    0.806    72.29
2085.72    0.808    72.42
2086.72    0.809    72.56
2087.72    0.810    72.69
2088.72    0.811    72.83
2089.72    0.812    72.96
2090.72    0.814    73.09
2091.72    0.815    73.23
2092.72    0.816    73.36
2093.72    0.817    73.49
2094.72    0.818    73.62
2095.72    0.819    73.76
2096.72    0.820    73.89
2097.72    0.821    74.02
2098.72    0.822    74.15
2099.72    0.823    74.28
2100.72    0.824    74.41
2101.72    0.825    74.54
2102.72    0.826    74.67
2103.72    0.827    74.80
2104.72    0.828    74.92
2105.72    0.829    75.05
2106.72    0.830    75.18
2107.72    0.831    75.31
2108.72    0.832    75.44
2109.72    0.833    75.56
2110.72    0.834    75.69
2111.72    0.835    75.82
2112.72    0.835    75.94
2113.72    0.836    76.07
2114.72    0.837    76.20
2115.72    0.838    76.32
2116.72    0.839    76.45
2117.72    0.839    76.57
2118.72    0.840    76.70
2119.72    0.841    76.82
2120.72    0.842    76.95
2121.72    0.842    77.07
2122.72    0.843    77.20
2123.72    0.844    77.32
2124.72    0.844    77.44
2125.72    0.845    77.57
2126.72    0.845    77.69
2127.72    0.846    77.81
2128.72    0.847    77.94
2129.72    0.847    78.06
2130.72    0.848    78.18
2131.72    0.848    78.31
2132.72    0.849    78.43
2133.72    0.849    78.55
2134.72    0.850    78.67
2135.72    0.850    78.79
2136.72    0.851    78.92
2137.72    0.851    79.04
2138.72    0.852    79.16
2139.72    0.852    79.28
2140.72    0.853    79.40
2141.72    0.853    79.52
2142.72    0.853    79.64
2143.72    0.854    79.77
2144.72    0.854    79.89
2145.72    0.855    80.01
2146.72    0.855    80.13
2147.72    0.855    80.25
2148.72    0.856    80.37
2149.72    0.856    80.49
2150.72    0.856    80.61
2151.72    0.856    80.73
2152.72    0.857    80.85
2153.72    0.857    80.97
2154.72    0.857    81.09
2155.72    0.857    81.21
2156.72    0.857    81.33
2157.72    0.858    81.45
2158.72    0.858    81.57
2159.72    0.858    81.69
2160.72    0.858    81.81
2161.72    0.858    81.93
2162.72    0.858    82.05
2163.72    0.858    82.17
2164.72    0.858    82.29
2165.72    0.858    82.41
2166.72    0.859    82.53
2167.72    0.859    82.65
2168.72    0.859    82.77
2169.72    0.859    82.89
2170.72    0.859    83.01
2171.72    0.859    83.13
2172.72    0.859    83.25
2173.72    0.858    83.37
2174.72    0.858    83.49
2175.72    0.858    83.60
2176.72    0.858    83.72
2177.72    0.858    83.84
2178.72    0.858    83.96
2179.72    0.858    84.08
2180.72    0.858    84.20
2181.72    0.857    84.32
2182.72    0.857    84.44
2183.72    0.857    84.56
2184.72    0.857    84.68
2185.72    0.857    84.80
2186.72    0.856    84.92
2187.72    0.856    85.04
2188.72    0.856    85.16
2189.72    0.856    85.29
2190.72    0.855    85.41
2191.72    0.855    85.53
2192.72    0.855    85.65
2193.72    0.854    85.77
2194.72    0.854    85.89
2195.72    0.854    86.01
2196.72    0.853    86.13
2197.72    0.853    86.25
2198.72    0.852    86.37
2199.72    0.852    86.49
2200.72    0.851    86.62
2201.72    0.851    86.74
2202.72    0.850    86.86
2203.72    0.850    86.98
2204.72    0.849    87.10
2205.72    0.849    87.23
2206.72    0.848    87.35
2207.72    0.848    87.47
2208.72    0.847    87.59
2209.72    0.847    87.72
2210.72    0.846    87.84
2211.72    0.845    87.96
2212.72    0.845    88.09
2213.72    0.844    88.21
2214.72    0.844    88.33
2215.72    0.843    88.46
2216.72    0.842    88.58
2217.72    0.841    88.71
2218.72    0.841    88.83
2219.72    0.840    88.96
2220.72    0.839    89.08
2221.72    0.838    89.21
2222.72    0.838    89.33
2223.72    0.837    89.46
2224.72    0.836    89.58
2225.72    0.835    89.71
2226.72    0.834    89.84
2227.72    0.834    89.96
2228.72    0.833    90.09
2229.72    0.832    90.22
2230.72    0.831    90.35
2231.72    0.830    90.47
2232.72    0.829    90.60
2233.72    0.828    90.73
2234.72    0.827    90.86
2235.72    0.826    90.99
2236.72    0.825    91.12
2237.72    0.824    91.25
2238.72    0.823    91.38
2239.72    0.822    91.51
2240.72    0.821    91.64
2241.72    0.820    91.77
2242.72    0.819    91.90
2243.72    0.818    92.03
2244.72    0.816    92.16
2245.72    0.815    92.30
2246.72    0.814    92.43
2247.72    0.813    92.56
2248.72    0.812    92.70
2249.72    0.811    92.83
2250.72    0.809    92.96
2251.72    0.808    93.10
2252.72    0.807    93.23
2253.72    0.806    93.37
2254.72    0.804    93.51
2255.72    0.803    93.64
2256.72    0.802    93.78
2257.72    0.800    93.92
2258.72    0.799    94.06
2259.72    0.797    94.19
2260.72    0.796    94.33
2261.72    0.795    94.47
2262.72    0.793    94.61
2263.72    0.792    94.75
2264.72    0.790    94.89
2265.72    0.789    95.04
2266.72    0.787    95.18
2267.72    0.786    95.32
2268.72    0.784    95.46
2269.72    0.783    95.61
2270.72    0.781    95.75
2271.72    0.779    95.90
2272.72    0.778    96.04
2273.72    0.776    96.19
2274.72    0.775    96.33
2275.72    0.773    96.48
2276.72    0.771    96.63
2277.72    0.770    96.78
2278.72    0.768    96.93
2279.72    0.766    97.08
2280.72    0.764    97.23
2281.72    0.763    97.38
2282.72    0.761    97.53
2283.72    0.759    97.68
2284.72    0.757    97.84
2285.72    0.755    97.99
2286.72    0.753    98.15
2287.72    0.751    98.30
2288.72    0.749    98.46
2289.72    0.748    98.62
2290.72    0.746    98.77
2291.72    0.744    98.93
2292.72    0.742    99.09
2293.72    0.740    99.25
2294.72    0.738    99.42






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 16:46:53



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