Double Star Calculator - Orbit

Orbital Elements for STF511
WDS: STF511 WDS ID/Discoverer
P: 343.000 Orbital period (years)
a: 0.535 Semi-major axis (arcseconds)
i: 148.0 Inclination (degrees)
Ω: 128.5 Longitude of ascending node (degrees)
T: 1933.000 Epoch of periastron passage (year)
e: 0.31 Eccentricity
ω: 298.0 Longitude of periastron (degrees)
Start-Year: 1853.5 Year
End-Year: 2196.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF511
Position: 041755.70+584726.7 Epoch-2000 right ascension and declination
WDS-ID: 04179+5847 WDS designation
Discoverer Code: STF511 Discover designation and components
ADS number: 3098 Aitken Double Star catalog
HD number: 26839 HD catalog number
Hipparcos number: 20046 Hipparcos catalog number
V1: 7.37 Magnitude of the primary
V2: 8.70 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Hei1996c Reference

Double Star Orbit for STF511



WDS 6th Orbit including measures of STF511

-- 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 STF511
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.526    64.20
--------------------------
1853.50    0.566   308.60
1854.50    0.563   307.84
1855.50    0.561   307.07
1856.50    0.558   306.30
1857.50    0.555   305.51
1858.50    0.551   304.72
1859.50    0.548   303.92
1860.50    0.545   303.11
1861.50    0.542   302.29
1862.50    0.538   301.46
1863.50    0.535   300.62
1864.50    0.532   299.77
1865.50    0.528   298.90
1866.50    0.525   298.03
1867.50    0.521   297.14
1868.50    0.517   296.24
1869.50    0.513   295.33
1870.50    0.510   294.41
1871.50    0.506   293.47
1872.50    0.502   292.51
1873.50    0.498   291.54
1874.50    0.494   290.56
1875.50    0.490   289.55
1876.50    0.486   288.54
1877.50    0.481   287.50
1878.50    0.477   286.45
1879.50    0.473   285.37
1880.50    0.469   284.28
1881.50    0.464   283.17
1882.50    0.460   282.03
1883.50    0.455   280.87
1884.50    0.451   279.70
1885.50    0.446   278.49
1886.50    0.442   277.26
1887.50    0.437   276.01
1888.50    0.433   274.73
1889.50    0.428   273.43
1890.50    0.424   272.09
1891.50    0.419   270.73
1892.50    0.415   269.34
1893.50    0.410   267.91
1894.50    0.406   266.46
1895.50    0.401   264.97
1896.50    0.397   263.45
1897.50    0.392   261.89
1898.50    0.388   260.30
1899.50    0.384   258.67
1900.50    0.379   257.01
1901.50    0.375   255.30
1902.50    0.371   253.56
1903.50    0.367   251.78
1904.50    0.363   249.96
1905.50    0.359   248.10
1906.50    0.355   246.20
1907.50    0.352   244.27
1908.50    0.348   242.29
1909.50    0.345   240.27
1910.50    0.342   238.22
1911.50    0.339   236.13
1912.50    0.336   234.00
1913.50    0.333   231.83
1914.50    0.331   229.64
1915.50    0.329   227.41
1916.50    0.327   225.15
1917.50    0.325   222.87
1918.50    0.323   220.56
1919.50    0.322   218.23
1920.50    0.321   215.89
1921.50    0.320   213.52
1922.50    0.319   211.15
1923.50    0.319   208.77
1924.50    0.319   206.38
1925.50    0.319   204.00
1926.50    0.319   201.61
1927.50    0.319   199.24
1928.50    0.320   196.87
1929.50    0.321   194.51
1930.50    0.322   192.17
1931.50    0.324   189.85
1932.50    0.325   187.55
1933.50    0.327   185.28
1934.50    0.329   183.03
1935.50    0.331   180.81
1936.50    0.334   178.61
1937.50    0.336   176.45
1938.50    0.338   174.32
1939.50    0.341   172.22
1940.50    0.344   170.16
1941.50    0.347   168.13
1942.50    0.350   166.13
1943.50    0.353   164.17
1944.50    0.356   162.24
1945.50    0.359   160.34
1946.50    0.362   158.48
1947.50    0.365   156.65
1948.50    0.369   154.85
1949.50    0.372   153.09
1950.50    0.375   151.35
1951.50    0.379   149.65
1952.50    0.382   147.97
1953.50    0.385   146.33
1954.50    0.388   144.71
1955.50    0.392   143.12
1956.50    0.395   141.55
1957.50    0.398   140.01
1958.50    0.401   138.49
1959.50    0.404   137.00
1960.50    0.407   135.53
1961.50    0.410   134.08
1962.50    0.413   132.66
1963.50    0.416   131.25
1964.50    0.419   129.86
1965.50    0.422   128.49
1966.50    0.425   127.14
1967.50    0.428   125.81
1968.50    0.430   124.50
1969.50    0.433   123.20
1970.50    0.436   121.91
1971.50    0.438   120.64
1972.50    0.441   119.39
1973.50    0.443   118.15
1974.50    0.445   116.92
1975.50    0.448   115.71
1976.50    0.450   114.50
1977.50    0.452   113.31
1978.50    0.454   112.14
1979.50    0.457   110.97
1980.50    0.459   109.81
1981.50    0.461   108.67
1982.50    0.463   107.53
1983.50    0.465   106.40
1984.50    0.467   105.29
1985.50    0.468   104.18
1986.50    0.470   103.08
1987.50    0.472   101.99
1988.50    0.474   100.91
1989.50    0.476    99.83
1990.50    0.477    98.76
1991.50    0.479    97.70
1992.50    0.481    96.65
1993.50    0.482    95.61
1994.50    0.484    94.57
1995.50    0.485    93.54
1996.50    0.487    92.51
1997.50    0.488    91.49
1998.50    0.490    90.48
1999.50    0.491    89.47
2000.50    0.493    88.47
2001.50    0.494    87.48
2002.50    0.495    86.49
2003.50    0.497    85.50
2004.50    0.498    84.52
2005.50    0.500    83.55
2006.50    0.501    82.58
2007.50    0.502    81.62
2008.50    0.503    80.66
2009.50    0.505    79.71
2010.50    0.506    78.76
2011.50    0.507    77.82
2012.50    0.509    76.88
2013.50    0.510    75.94
2014.50    0.511    75.01
2015.50    0.512    74.09
2016.50    0.514    73.17
2017.50    0.515    72.25
2018.50    0.516    71.34
2019.50    0.517    70.43
2020.50    0.518    69.53
2021.50    0.520    68.63
2022.50    0.521    67.74
2023.50    0.522    66.85
2024.50    0.523    65.96
2025.50    0.524    65.08
2026.50    0.526    64.20
2027.50    0.527    63.32
2028.50    0.528    62.45
2029.50    0.529    61.59
2030.50    0.531    60.72
2031.50    0.532    59.87
2032.50    0.533    59.01
2033.50    0.534    58.16
2034.50    0.535    57.31
2035.50    0.537    56.47
2036.50    0.538    55.63
2037.50    0.539    54.79
2038.50    0.540    53.96
2039.50    0.542    53.14
2040.50    0.543    52.31
2041.50    0.544    51.49
2042.50    0.545    50.67
2043.50    0.546    49.86
2044.50    0.548    49.05
2045.50    0.549    48.25
2046.50    0.550    47.44
2047.50    0.551    46.65
2048.50    0.553    45.85
2049.50    0.554    45.06
2050.50    0.555    44.27
2051.50    0.556    43.49
2052.50    0.558    42.71
2053.50    0.559    41.93
2054.50    0.560    41.16
2055.50    0.562    40.39
2056.50    0.563    39.62
2057.50    0.564    38.86
2058.50    0.565    38.10
2059.50    0.567    37.34
2060.50    0.568    36.59
2061.50    0.569    35.84
2062.50    0.570    35.09
2063.50    0.572    34.35
2064.50    0.573    33.61
2065.50    0.574    32.88
2066.50    0.576    32.14
2067.50    0.577    31.41
2068.50    0.578    30.69
2069.50    0.579    29.96
2070.50    0.581    29.24
2071.50    0.582    28.53
2072.50    0.583    27.81
2073.50    0.584    27.10
2074.50    0.586    26.39
2075.50    0.587    25.69
2076.50    0.588    24.99
2077.50    0.589    24.29
2078.50    0.591    23.59
2079.50    0.592    22.90
2080.50    0.593    22.21
2081.50    0.594    21.52
2082.50    0.595    20.84
2083.50    0.597    20.16
2084.50    0.598    19.48
2085.50    0.599    18.80
2086.50    0.600    18.13
2087.50    0.601    17.46
2088.50    0.603    16.79
2089.50    0.604    16.12
2090.50    0.605    15.46
2091.50    0.606    14.80
2092.50    0.607    14.14
2093.50    0.608    13.48
2094.50    0.609    12.83
2095.50    0.610    12.18
2096.50    0.611    11.53
2097.50    0.612    10.88
2098.50    0.613    10.24
2099.50    0.615     9.59
2100.50    0.616     8.95
2101.50    0.617     8.32
2102.50    0.617     7.68
2103.50    0.618     7.05
2104.50    0.619     6.41
2105.50    0.620     5.78
2106.50    0.621     5.15
2107.50    0.622     4.53
2108.50    0.623     3.90
2109.50    0.624     3.28
2110.50    0.625     2.66
2111.50    0.626     2.04
2112.50    0.626     1.42
2113.50    0.627     0.80
2114.50    0.628     0.19
2115.50    0.629   359.57
2116.50    0.629   358.96
2117.50    0.630   358.35
2118.50    0.631   357.74
2119.50    0.631   357.13
2120.50    0.632   356.53
2121.50    0.632   355.92
2122.50    0.633   355.31
2123.50    0.634   354.71
2124.50    0.634   354.11
2125.50    0.635   353.50
2126.50    0.635   352.90
2127.50    0.635   352.30
2128.50    0.636   351.70
2129.50    0.636   351.11
2130.50    0.636   350.51
2131.50    0.637   349.91
2132.50    0.637   349.31
2133.50    0.637   348.72
2134.50    0.638   348.12
2135.50    0.638   347.52
2136.50    0.638   346.93
2137.50    0.638   346.33
2138.50    0.638   345.74
2139.50    0.638   345.14
2140.50    0.638   344.55
2141.50    0.638   343.95
2142.50    0.638   343.36
2143.50    0.638   342.76
2144.50    0.638   342.17
2145.50    0.638   341.57
2146.50    0.637   340.98
2147.50    0.637   340.38
2148.50    0.637   339.78
2149.50    0.637   339.19
2150.50    0.636   338.59
2151.50    0.636   337.99
2152.50    0.635   337.39
2153.50    0.635   336.79
2154.50    0.634   336.19
2155.50    0.634   335.58
2156.50    0.633   334.98
2157.50    0.632   334.37
2158.50    0.632   333.77
2159.50    0.631   333.16
2160.50    0.630   332.55
2161.50    0.629   331.94
2162.50    0.628   331.33
2163.50    0.627   330.71
2164.50    0.626   330.10
2165.50    0.625   329.48
2166.50    0.624   328.86
2167.50    0.623   328.24
2168.50    0.622   327.61
2169.50    0.621   326.98
2170.50    0.619   326.35
2171.50    0.618   325.72
2172.50    0.617   325.09
2173.50    0.615   324.45
2174.50    0.614   323.81
2175.50    0.612   323.16
2176.50    0.611   322.51
2177.50    0.609   321.86
2178.50    0.607   321.21
2179.50    0.605   320.55
2180.50    0.604   319.88
2181.50    0.602   319.22
2182.50    0.600   318.55
2183.50    0.598   317.87
2184.50    0.596   317.19
2185.50    0.594   316.51
2186.50    0.591   315.82
2187.50    0.589   315.12
2188.50    0.587   314.42
2189.50    0.585   313.71
2190.50    0.582   313.00
2191.50    0.580   312.28
2192.50    0.577   311.56
2193.50    0.574   310.83
2194.50    0.572   310.09
2195.50    0.569   309.35






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 15:20:16



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