Double Star Calculator - Orbit

Orbital Elements for ES608AB
WDS: ES608AB WDS ID/Discoverer
P: 322.772 Orbital period (years)
a: 3.53563 Semi-major axis (arcseconds)
i: 74.317 Inclination (degrees)
Ω: 110.117 Longitude of ascending node (degrees)
T: 1933.943 Epoch of periastron passage (year)
e: 0.4779 Eccentricity
ω: 116.016 Longitude of periastron (degrees)
Start-Year: 1863.6138 Year
End-Year: 2186.3862 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for ES608AB
Position: 133751.20+480817.2 Epoch-2000 right ascension and declination
WDS-ID: 13379+4808 WDS designation
Discoverer Code: ES608AB Discover designation and components
ADS number: 8980 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 66492 Hipparcos catalog number
V1: 10.28 Magnitude of the primary
V2: 11.49 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Izm2019 Reference

Double Star Orbit for ES608AB



WDS 6th Orbit including measures of ES608AB

-- 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 ES608AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.363   352.61
--------------------------
1863.61    3.847   106.01
1864.61    3.832   106.24
1865.61    3.816   106.46
1866.61    3.799   106.69
1867.61    3.780   106.92
1868.61    3.761   107.15
1869.61    3.741   107.39
1870.61    3.720   107.63
1871.61    3.697   107.87
1872.61    3.674   108.11
1873.61    3.649   108.36
1874.61    3.623   108.61
1875.61    3.596   108.86
1876.61    3.568   109.12
1877.61    3.538   109.38
1878.61    3.507   109.65
1879.61    3.475   109.92
1880.61    3.442   110.20
1881.61    3.407   110.48
1882.61    3.371   110.77
1883.61    3.334   111.06
1884.61    3.295   111.36
1885.61    3.254   111.67
1886.61    3.213   111.99
1887.61    3.169   112.31
1888.61    3.125   112.65
1889.61    3.078   112.99
1890.61    3.031   113.35
1891.61    2.981   113.71
1892.61    2.930   114.09
1893.61    2.877   114.49
1894.61    2.823   114.89
1895.61    2.767   115.32
1896.61    2.709   115.76
1897.61    2.649   116.22
1898.61    2.588   116.70
1899.61    2.525   117.21
1900.61    2.460   117.74
1901.61    2.393   118.31
1902.61    2.324   118.90
1903.61    2.254   119.53
1904.61    2.181   120.21
1905.61    2.107   120.93
1906.61    2.031   121.70
1907.61    1.954   122.53
1908.61    1.874   123.44
1909.61    1.793   124.42
1910.61    1.710   125.50
1911.61    1.626   126.69
1912.61    1.540   128.01
1913.61    1.453   129.49
1914.61    1.365   131.16
1915.61    1.276   133.06
1916.61    1.187   135.25
1917.61    1.098   137.79
1918.61    1.009   140.78
1919.61    0.922   144.34
1920.61    0.837   148.63
1921.61    0.757   153.86
1922.61    0.682   160.28
1923.61    0.617   168.16
1924.61    0.565   177.69
1925.61    0.530   188.82
1926.61    0.516   201.03
1927.61    0.524   213.37
1928.61    0.555   224.82
1929.61    0.603   234.76
1930.61    0.665   243.03
1931.61    0.737   249.79
1932.61    0.816   255.30
1933.61    0.898   259.83
1934.61    0.983   263.58
1935.61    1.068   266.74
1936.61    1.154   269.42
1937.61    1.238   271.74
1938.61    1.321   273.76
1939.61    1.403   275.55
1940.61    1.482   277.14
1941.61    1.558   278.58
1942.61    1.631   279.88
1943.61    1.702   281.07
1944.61    1.769   282.17
1945.61    1.833   283.19
1946.61    1.894   284.14
1947.61    1.951   285.04
1948.61    2.006   285.88
1949.61    2.056   286.69
1950.61    2.104   287.45
1951.61    2.148   288.18
1952.61    2.189   288.89
1953.61    2.226   289.57
1954.61    2.261   290.23
1955.61    2.293   290.86
1956.61    2.321   291.49
1957.61    2.347   292.09
1958.61    2.371   292.69
1959.61    2.391   293.27
1960.61    2.409   293.85
1961.61    2.425   294.41
1962.61    2.438   294.97
1963.61    2.449   295.53
1964.61    2.458   296.08
1965.61    2.465   296.62
1966.61    2.470   297.17
1967.61    2.473   297.71
1968.61    2.474   298.25
1969.61    2.474   298.79
1970.61    2.472   299.33
1971.61    2.468   299.87
1972.61    2.463   300.42
1973.61    2.456   300.97
1974.61    2.448   301.52
1975.61    2.439   302.07
1976.61    2.428   302.63
1977.61    2.416   303.19
1978.61    2.404   303.76
1979.61    2.390   304.34
1980.61    2.375   304.92
1981.61    2.359   305.51
1982.61    2.342   306.11
1983.61    2.324   306.72
1984.61    2.306   307.34
1985.61    2.287   307.97
1986.61    2.267   308.61
1987.61    2.246   309.26
1988.61    2.225   309.92
1989.61    2.203   310.59
1990.61    2.181   311.28
1991.61    2.158   311.99
1992.61    2.135   312.70
1993.61    2.111   313.44
1994.61    2.087   314.19
1995.61    2.063   314.96
1996.61    2.038   315.75
1997.61    2.013   316.55
1998.61    1.988   317.38
1999.61    1.963   318.23
2000.61    1.937   319.10
2001.61    1.912   319.99
2002.61    1.886   320.91
2003.61    1.861   321.85
2004.61    1.835   322.82
2005.61    1.809   323.82
2006.61    1.784   324.85
2007.61    1.759   325.90
2008.61    1.733   326.99
2009.61    1.708   328.11
2010.61    1.684   329.26
2011.61    1.659   330.44
2012.61    1.635   331.66
2013.61    1.612   332.92
2014.61    1.588   334.21
2015.61    1.566   335.54
2016.61    1.544   336.91
2017.61    1.522   338.32
2018.61    1.501   339.77
2019.61    1.481   341.26
2020.61    1.461   342.79
2021.61    1.442   344.36
2022.61    1.424   345.97
2023.61    1.407   347.63
2024.61    1.391   349.32
2025.61    1.376   351.05
2026.61    1.362   352.81
2027.61    1.349   354.62
2028.61    1.337   356.45
2029.61    1.326   358.32
2030.61    1.316     0.22
2031.61    1.308     2.14
2032.61    1.301     4.09
2033.61    1.295     6.05
2034.61    1.291     8.04
2035.61    1.288    10.03
2036.61    1.286    12.03
2037.61    1.285    14.03
2038.61    1.286    16.03
2039.61    1.289    18.03
2040.61    1.292    20.02
2041.61    1.297    21.99
2042.61    1.304    23.95
2043.61    1.311    25.89
2044.61    1.320    27.80
2045.61    1.331    29.69
2046.61    1.342    31.54
2047.61    1.355    33.36
2048.61    1.369    35.15
2049.61    1.383    36.89
2050.61    1.399    38.61
2051.61    1.416    40.28
2052.61    1.434    41.91
2053.61    1.453    43.49
2054.61    1.473    45.04
2055.61    1.494    46.55
2056.61    1.515    48.01
2057.61    1.537    49.43
2058.61    1.560    50.81
2059.61    1.584    52.15
2060.61    1.608    53.45
2061.61    1.633    54.71
2062.61    1.658    55.93
2063.61    1.684    57.12
2064.61    1.710    58.27
2065.61    1.737    59.38
2066.61    1.764    60.46
2067.61    1.792    61.51
2068.61    1.820    62.53
2069.61    1.848    63.51
2070.61    1.877    64.46
2071.61    1.906    65.39
2072.61    1.935    66.29
2073.61    1.964    67.16
2074.61    1.994    68.01
2075.61    2.023    68.83
2076.61    2.053    69.62
2077.61    2.083    70.40
2078.61    2.113    71.15
2079.61    2.144    71.88
2080.61    2.174    72.59
2081.61    2.204    73.28
2082.61    2.235    73.95
2083.61    2.265    74.61
2084.61    2.296    75.24
2085.61    2.326    75.86
2086.61    2.357    76.47
2087.61    2.387    77.06
2088.61    2.418    77.63
2089.61    2.448    78.19
2090.61    2.478    78.73
2091.61    2.508    79.27
2092.61    2.539    79.79
2093.61    2.569    80.29
2094.61    2.599    80.79
2095.61    2.628    81.27
2096.61    2.658    81.75
2097.61    2.688    82.21
2098.61    2.717    82.67
2099.61    2.746    83.11
2100.61    2.776    83.54
2101.61    2.805    83.97
2102.61    2.833    84.39
2103.61    2.862    84.79
2104.61    2.890    85.19
2105.61    2.918    85.59
2106.61    2.946    85.97
2107.61    2.974    86.35
2108.61    3.002    86.72
2109.61    3.029    87.08
2110.61    3.056    87.44
2111.61    3.083    87.79
2112.61    3.109    88.14
2113.61    3.136    88.48
2114.61    3.162    88.81
2115.61    3.187    89.14
2116.61    3.213    89.46
2117.61    3.238    89.78
2118.61    3.263    90.10
2119.61    3.287    90.40
2120.61    3.312    90.71
2121.61    3.336    91.01
2122.61    3.359    91.30
2123.61    3.382    91.59
2124.61    3.405    91.88
2125.61    3.428    92.17
2126.61    3.450    92.45
2127.61    3.472    92.72
2128.61    3.494    92.99
2129.61    3.515    93.26
2130.61    3.535    93.53
2131.61    3.556    93.79
2132.61    3.576    94.05
2133.61    3.595    94.31
2134.61    3.615    94.57
2135.61    3.633    94.82
2136.61    3.652    95.07
2137.61    3.670    95.32
2138.61    3.687    95.56
2139.61    3.704    95.80
2140.61    3.721    96.04
2141.61    3.737    96.28
2142.61    3.752    96.52
2143.61    3.768    96.75
2144.61    3.782    96.98
2145.61    3.796    97.21
2146.61    3.810    97.44
2147.61    3.823    97.67
2148.61    3.836    97.90
2149.61    3.848    98.12
2150.61    3.860    98.34
2151.61    3.871    98.56
2152.61    3.882    98.78
2153.61    3.892    99.00
2154.61    3.901    99.22
2155.61    3.910    99.44
2156.61    3.918    99.66
2157.61    3.926    99.87
2158.61    3.933   100.08
2159.61    3.939   100.30
2160.61    3.945   100.51
2161.61    3.951   100.72
2162.61    3.955   100.94
2163.61    3.959   101.15
2164.61    3.962   101.36
2165.61    3.965   101.57
2166.61    3.967   101.78
2167.61    3.968   101.99
2168.61    3.969   102.20
2169.61    3.969   102.41
2170.61    3.968   102.62
2171.61    3.966   102.83
2172.61    3.964   103.04
2173.61    3.961   103.25
2174.61    3.957   103.46
2175.61    3.952   103.68
2176.61    3.946   103.89
2177.61    3.940   104.10
2178.61    3.933   104.31
2179.61    3.925   104.53
2180.61    3.916   104.74
2181.61    3.906   104.96
2182.61    3.896   105.18
2183.61    3.884   105.40
2184.61    3.871   105.62
2185.61    3.858   105.84






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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.


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Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 16:58:24



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