Double Star Calculator - Orbit

Orbital Elements for A513AB
WDS: A513AB WDS ID/Discoverer
P: 347.000 Orbital period (years)
a: 0.674 Semi-major axis (arcseconds)
i: 126.0 Inclination (degrees)
Ω: 78.6 Longitude of ascending node (degrees)
T: 1970.000 Epoch of periastron passage (year)
e: 0.31 Eccentricity
ω: 197.5 Longitude of periastron (degrees)
Start-Year: 1851.5 Year
End-Year: 2198.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A513AB
Position: 065245.07+245806.2 Epoch-2000 right ascension and declination
WDS-ID: 06528+2458 WDS designation
Discoverer Code: A513AB Discover designation and components
ADS number: 5535 Aitken Double Star catalog
HD number: 50106 HD catalog number
Hipparcos number: 33011 Hipparcos catalog number
V1: 9.9 Magnitude of the primary
V2: 10.0 Magnitude of the secondary
Equinox: Equinox
Date: 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: Hei1996c Reference

Double Star Orbit for A513AB



WDS 6th Orbit including measures of A513AB

-- 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 A513AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.410   134.70
--------------------------
1851.50    0.642    42.97
1852.50    0.636    42.33
1853.50    0.631    41.67
1854.50    0.625    41.00
1855.50    0.619    40.32
1856.50    0.613    39.63
1857.50    0.608    38.92
1858.50    0.602    38.20
1859.50    0.596    37.47
1860.50    0.590    36.72
1861.50    0.584    35.95
1862.50    0.579    35.18
1863.50    0.573    34.38
1864.50    0.567    33.57
1865.50    0.561    32.74
1866.50    0.555    31.90
1867.50    0.549    31.03
1868.50    0.544    30.15
1869.50    0.538    29.25
1870.50    0.532    28.33
1871.50    0.526    27.39
1872.50    0.520    26.43
1873.50    0.515    25.44
1874.50    0.509    24.44
1875.50    0.503    23.41
1876.50    0.498    22.36
1877.50    0.492    21.29
1878.50    0.487    20.19
1879.50    0.482    19.07
1880.50    0.476    17.92
1881.50    0.471    16.74
1882.50    0.466    15.54
1883.50    0.461    14.32
1884.50    0.456    13.06
1885.50    0.451    11.78
1886.50    0.446    10.48
1887.50    0.442     9.14
1888.50    0.437     7.78
1889.50    0.433     6.38
1890.50    0.429     4.97
1891.50    0.425     3.52
1892.50    0.421     2.04
1893.50    0.417     0.54
1894.50    0.413   359.02
1895.50    0.410   357.46
1896.50    0.407   355.88
1897.50    0.404   354.28
1898.50    0.401   352.65
1899.50    0.398   351.00
1900.50    0.396   349.33
1901.50    0.394   347.64
1902.50    0.392   345.94
1903.50    0.390   344.21
1904.50    0.388   342.47
1905.50    0.387   340.72
1906.50    0.386   338.95
1907.50    0.385   337.18
1908.50    0.384   335.40
1909.50    0.384   333.62
1910.50    0.384   331.83
1911.50    0.384   330.04
1912.50    0.384   328.25
1913.50    0.384   326.47
1914.50    0.385   324.69
1915.50    0.386   322.92
1916.50    0.387   321.15
1917.50    0.388   319.40
1918.50    0.390   317.66
1919.50    0.391   315.93
1920.50    0.393   314.22
1921.50    0.395   312.53
1922.50    0.397   310.85
1923.50    0.400   309.19
1924.50    0.402   307.55
1925.50    0.404   305.93
1926.50    0.407   304.33
1927.50    0.410   302.75
1928.50    0.412   301.19
1929.50    0.415   299.65
1930.50    0.418   298.14
1931.50    0.421   296.64
1932.50    0.424   295.17
1933.50    0.427   293.71
1934.50    0.430   292.28
1935.50    0.433   290.87
1936.50    0.436   289.47
1937.50    0.439   288.10
1938.50    0.442   286.74
1939.50    0.445   285.40
1940.50    0.448   284.08
1941.50    0.450   282.77
1942.50    0.453   281.48
1943.50    0.455   280.21
1944.50    0.458   278.94
1945.50    0.460   277.69
1946.50    0.462   276.46
1947.50    0.464   275.23
1948.50    0.466   274.01
1949.50    0.467   272.80
1950.50    0.469   271.60
1951.50    0.470   270.40
1952.50    0.471   269.22
1953.50    0.472   268.03
1954.50    0.473   266.85
1955.50    0.473   265.67
1956.50    0.473   264.50
1957.50    0.473   263.32
1958.50    0.473   262.14
1959.50    0.472   260.96
1960.50    0.471   259.78
1961.50    0.470   258.59
1962.50    0.469   257.39
1963.50    0.467   256.19
1964.50    0.465   254.98
1965.50    0.463   253.76
1966.50    0.461   252.53
1967.50    0.459   251.28
1968.50    0.456   250.02
1969.50    0.453   248.75
1970.50    0.449   247.45
1971.50    0.446   246.14
1972.50    0.442   244.80
1973.50    0.438   243.44
1974.50    0.434   242.06
1975.50    0.430   240.65
1976.50    0.426   239.21
1977.50    0.421   237.74
1978.50    0.417   236.24
1979.50    0.412   234.71
1980.50    0.407   233.14
1981.50    0.402   231.53
1982.50    0.397   229.88
1983.50    0.392   228.18
1984.50    0.387   226.45
1985.50    0.382   224.67
1986.50    0.377   222.84
1987.50    0.372   220.96
1988.50    0.367   219.03
1989.50    0.363   217.06
1990.50    0.358   215.03
1991.50    0.354   212.94
1992.50    0.349   210.81
1993.50    0.345   208.63
1994.50    0.341   206.39
1995.50    0.338   204.11
1996.50    0.335   201.78
1997.50    0.332   199.41
1998.50    0.329   197.00
1999.50    0.327   194.55
2000.50    0.325   192.08
2001.50    0.324   189.57
2002.50    0.323   187.05
2003.50    0.322   184.51
2004.50    0.322   181.97
2005.50    0.322   179.42
2006.50    0.322   176.89
2007.50    0.324   174.36
2008.50    0.325   171.86
2009.50    0.327   169.38
2010.50    0.329   166.93
2011.50    0.332   164.52
2012.50    0.335   162.15
2013.50    0.338   159.82
2014.50    0.342   157.55
2015.50    0.347   155.33
2016.50    0.351   153.16
2017.50    0.356   151.06
2018.50    0.361   149.00
2019.50    0.366   147.01
2020.50    0.372   145.08
2021.50    0.378   143.21
2022.50    0.384   141.39
2023.50    0.390   139.63
2024.50    0.397   137.93
2025.50    0.403   136.29
2026.50    0.410   134.70
2027.50    0.417   133.16
2028.50    0.424   131.67
2029.50    0.431   130.23
2030.50    0.439   128.84
2031.50    0.446   127.49
2032.50    0.453   126.19
2033.50    0.461   124.93
2034.50    0.468   123.71
2035.50    0.476   122.53
2036.50    0.484   121.39
2037.50    0.491   120.28
2038.50    0.499   119.20
2039.50    0.506   118.16
2040.50    0.514   117.15
2041.50    0.522   116.17
2042.50    0.529   115.21
2043.50    0.537   114.29
2044.50    0.544   113.39
2045.50    0.552   112.51
2046.50    0.559   111.66
2047.50    0.567   110.83
2048.50    0.574   110.02
2049.50    0.581   109.23
2050.50    0.589   108.46
2051.50    0.596   107.71
2052.50    0.603   106.97
2053.50    0.610   106.26
2054.50    0.617   105.56
2055.50    0.624   104.88
2056.50    0.631   104.21
2057.50    0.638   103.55
2058.50    0.645   102.91
2059.50    0.651   102.28
2060.50    0.658   101.67
2061.50    0.664   101.07
2062.50    0.671   100.48
2063.50    0.677    99.89
2064.50    0.683    99.33
2065.50    0.689    98.77
2066.50    0.695    98.22
2067.50    0.701    97.68
2068.50    0.707    97.14
2069.50    0.713    96.62
2070.50    0.718    96.11
2071.50    0.724    95.60
2072.50    0.729    95.10
2073.50    0.735    94.61
2074.50    0.740    94.13
2075.50    0.745    93.65
2076.50    0.750    93.18
2077.50    0.755    92.71
2078.50    0.760    92.25
2079.50    0.765    91.80
2080.50    0.769    91.35
2081.50    0.774    90.91
2082.50    0.778    90.47
2083.50    0.783    90.04
2084.50    0.787    89.61
2085.50    0.791    89.19
2086.50    0.795    88.77
2087.50    0.799    88.36
2088.50    0.803    87.95
2089.50    0.807    87.54
2090.50    0.810    87.14
2091.50    0.814    86.74
2092.50    0.817    86.34
2093.50    0.821    85.95
2094.50    0.824    85.56
2095.50    0.827    85.17
2096.50    0.830    84.79
2097.50    0.833    84.41
2098.50    0.836    84.03
2099.50    0.838    83.65
2100.50    0.841    83.28
2101.50    0.843    82.91
2102.50    0.846    82.54
2103.50    0.848    82.17
2104.50    0.850    81.81
2105.50    0.852    81.44
2106.50    0.854    81.08
2107.50    0.856    80.72
2108.50    0.858    80.36
2109.50    0.859    80.01
2110.50    0.861    79.65
2111.50    0.862    79.29
2112.50    0.864    78.94
2113.50    0.865    78.59
2114.50    0.866    78.24
2115.50    0.867    77.89
2116.50    0.868    77.54
2117.50    0.869    77.19
2118.50    0.870    76.84
2119.50    0.870    76.49
2120.50    0.871    76.14
2121.50    0.871    75.80
2122.50    0.872    75.45
2123.50    0.872    75.10
2124.50    0.872    74.76
2125.50    0.872    74.41
2126.50    0.872    74.06
2127.50    0.872    73.72
2128.50    0.872    73.37
2129.50    0.871    73.02
2130.50    0.871    72.68
2131.50    0.870    72.33
2132.50    0.870    71.98
2133.50    0.869    71.63
2134.50    0.868    71.28
2135.50    0.867    70.93
2136.50    0.866    70.58
2137.50    0.865    70.23
2138.50    0.864    69.88
2139.50    0.863    69.53
2140.50    0.861    69.17
2141.50    0.860    68.82
2142.50    0.858    68.46
2143.50    0.856    68.10
2144.50    0.855    67.74
2145.50    0.853    67.38
2146.50    0.851    67.02
2147.50    0.849    66.65
2148.50    0.847    66.29
2149.50    0.845    65.92
2150.50    0.842    65.55
2151.50    0.840    65.17
2152.50    0.837    64.80
2153.50    0.835    64.42
2154.50    0.832    64.04
2155.50    0.829    63.66
2156.50    0.827    63.28
2157.50    0.824    62.89
2158.50    0.821    62.50
2159.50    0.818    62.11
2160.50    0.814    61.71
2161.50    0.811    61.32
2162.50    0.808    60.91
2163.50    0.805    60.51
2164.50    0.801    60.10
2165.50    0.798    59.69
2166.50    0.794    59.27
2167.50    0.790    58.85
2168.50    0.786    58.43
2169.50    0.783    58.00
2170.50    0.779    57.57
2171.50    0.775    57.13
2172.50    0.770    56.69
2173.50    0.766    56.24
2174.50    0.762    55.79
2175.50    0.758    55.34
2176.50    0.753    54.88
2177.50    0.749    54.41
2178.50    0.744    53.94
2179.50    0.740    53.46
2180.50    0.735    52.97
2181.50    0.731    52.48
2182.50    0.726    51.99
2183.50    0.721    51.48
2184.50    0.716    50.97
2185.50    0.711    50.46
2186.50    0.706    49.93
2187.50    0.701    49.40
2188.50    0.696    48.86
2189.50    0.691    48.31
2190.50    0.685    47.76
2191.50    0.680    47.19
2192.50    0.675    46.62
2193.50    0.669    46.03
2194.50    0.664    45.44
2195.50    0.659    44.84
2196.50    0.653    44.23
2197.50    0.648    43.60






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 15:52:16



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