Double Star Calculator - Orbit

Orbital Elements for AC4
WDS: AC4 WDS ID/Discoverer
P: 581.320 Orbital period (years)
a: 0.957 Semi-major axis (arcseconds)
i: 52.6 Inclination (degrees)
Ω: 157.5 Longitude of ascending node (degrees)
T: 2031.700 Epoch of periastron passage (year)
e: 0.761 Eccentricity
ω: 280.6 Longitude of periastron (degrees)
Start-Year: 1734.34 Year
End-Year: 2315.66 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for AC4
Position: 064857.74-150841.0 Epoch-2000 right ascension and declination
WDS-ID: 06490-1509 WDS designation
Discoverer Code: AC4 Discover designation and components
ADS number: 5487 Aitken Double Star catalog
HD number: 49662 HD catalog number
Hipparcos number: 32677 Hipparcos catalog number
V1: 5.57 Magnitude of the primary
V2: 7.23 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2014 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: Tok2015c Reference

Double Star Orbit for AC4



WDS 6th Orbit including measures of AC4

-- 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 AC4
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.170    31.20
--------------------------
1734.34    1.048   263.27
1735.34    1.049   263.47
1736.34    1.049   263.67
1737.34    1.050   263.88
1738.34    1.051   264.08
1739.34    1.052   264.28
1740.34    1.052   264.48
1741.34    1.053   264.69
1742.34    1.054   264.89
1743.34    1.054   265.09
1744.34    1.055   265.29
1745.34    1.056   265.49
1746.34    1.056   265.69
1747.34    1.057   265.89
1748.34    1.058   266.09
1749.34    1.058   266.29
1750.34    1.059   266.49
1751.34    1.059   266.69
1752.34    1.060   266.89
1753.34    1.061   267.09
1754.34    1.061   267.28
1755.34    1.062   267.48
1756.34    1.062   267.68
1757.34    1.063   267.88
1758.34    1.063   268.08
1759.34    1.064   268.27
1760.34    1.064   268.47
1761.34    1.065   268.67
1762.34    1.065   268.87
1763.34    1.066   269.06
1764.34    1.066   269.26
1765.34    1.067   269.46
1766.34    1.067   269.65
1767.34    1.068   269.85
1768.34    1.068   270.04
1769.34    1.069   270.24
1770.34    1.069   270.44
1771.34    1.069   270.63
1772.34    1.070   270.83
1773.34    1.070   271.02
1774.34    1.070   271.22
1775.34    1.071   271.41
1776.34    1.071   271.61
1777.34    1.071   271.80
1778.34    1.072   272.00
1779.34    1.072   272.19
1780.34    1.072   272.38
1781.34    1.073   272.58
1782.34    1.073   272.77
1783.34    1.073   272.97
1784.34    1.073   273.16
1785.34    1.074   273.36
1786.34    1.074   273.55
1787.34    1.074   273.74
1788.34    1.074   273.94
1789.34    1.074   274.13
1790.34    1.075   274.32
1791.34    1.075   274.52
1792.34    1.075   274.71
1793.34    1.075   274.90
1794.34    1.075   275.10
1795.34    1.075   275.29
1796.34    1.075   275.48
1797.34    1.076   275.68
1798.34    1.076   275.87
1799.34    1.076   276.06
1800.34    1.076   276.26
1801.34    1.076   276.45
1802.34    1.076   276.64
1803.34    1.076   276.84
1804.34    1.076   277.03
1805.34    1.076   277.22
1806.34    1.076   277.42
1807.34    1.076   277.61
1808.34    1.076   277.80
1809.34    1.076   277.99
1810.34    1.075   278.19
1811.34    1.075   278.38
1812.34    1.075   278.57
1813.34    1.075   278.77
1814.34    1.075   278.96
1815.34    1.075   279.15
1816.34    1.075   279.35
1817.34    1.075   279.54
1818.34    1.074   279.74
1819.34    1.074   279.93
1820.34    1.074   280.12
1821.34    1.074   280.32
1822.34    1.073   280.51
1823.34    1.073   280.70
1824.34    1.073   280.90
1825.34    1.073   281.09
1826.34    1.072   281.29
1827.34    1.072   281.48
1828.34    1.072   281.68
1829.34    1.071   281.87
1830.34    1.071   282.07
1831.34    1.070   282.26
1832.34    1.070   282.46
1833.34    1.070   282.65
1834.34    1.069   282.85
1835.34    1.069   283.04
1836.34    1.068   283.24
1837.34    1.068   283.43
1838.34    1.067   283.63
1839.34    1.067   283.83
1840.34    1.066   284.02
1841.34    1.066   284.22
1842.34    1.065   284.42
1843.34    1.064   284.61
1844.34    1.064   284.81
1845.34    1.063   285.01
1846.34    1.063   285.21
1847.34    1.062   285.40
1848.34    1.061   285.60
1849.34    1.061   285.80
1850.34    1.060   286.00
1851.34    1.059   286.20
1852.34    1.058   286.40
1853.34    1.058   286.60
1854.34    1.057   286.80
1855.34    1.056   287.00
1856.34    1.055   287.20
1857.34    1.054   287.40
1858.34    1.053   287.60
1859.34    1.053   287.80
1860.34    1.052   288.00
1861.34    1.051   288.21
1862.34    1.050   288.41
1863.34    1.049   288.61
1864.34    1.048   288.82
1865.34    1.047   289.02
1866.34    1.046   289.22
1867.34    1.045   289.43
1868.34    1.044   289.63
1869.34    1.043   289.84
1870.34    1.041   290.04
1871.34    1.040   290.25
1872.34    1.039   290.46
1873.34    1.038   290.66
1874.34    1.037   290.87
1875.34    1.036   291.08
1876.34    1.034   291.29
1877.34    1.033   291.50
1878.34    1.032   291.71
1879.34    1.030   291.92
1880.34    1.029   292.13
1881.34    1.028   292.34
1882.34    1.026   292.55
1883.34    1.025   292.76
1884.34    1.024   292.98
1885.34    1.022   293.19
1886.34    1.021   293.40
1887.34    1.019   293.62
1888.34    1.018   293.83
1889.34    1.016   294.05
1890.34    1.014   294.27
1891.34    1.013   294.49
1892.34    1.011   294.70
1893.34    1.009   294.92
1894.34    1.008   295.14
1895.34    1.006   295.36
1896.34    1.004   295.58
1897.34    1.003   295.81
1898.34    1.001   296.03
1899.34    0.999   296.25
1900.34    0.997   296.48
1901.34    0.995   296.70
1902.34    0.993   296.93
1903.34    0.991   297.16
1904.34    0.989   297.38
1905.34    0.987   297.61
1906.34    0.985   297.84
1907.34    0.983   298.07
1908.34    0.981   298.30
1909.34    0.979   298.54
1910.34    0.977   298.77
1911.34    0.974   299.01
1912.34    0.972   299.24
1913.34    0.970   299.48
1914.34    0.968   299.72
1915.34    0.965   299.96
1916.34    0.963   300.20
1917.34    0.960   300.44
1918.34    0.958   300.68
1919.34    0.955   300.93
1920.34    0.953   301.17
1921.34    0.950   301.42
1922.34    0.948   301.67
1923.34    0.945   301.92
1924.34    0.942   302.17
1925.34    0.940   302.42
1926.34    0.937   302.67
1927.34    0.934   302.93
1928.34    0.931   303.18
1929.34    0.928   303.44
1930.34    0.925   303.70
1931.34    0.922   303.97
1932.34    0.919   304.23
1933.34    0.916   304.49
1934.34    0.913   304.76
1935.34    0.910   305.03
1936.34    0.907   305.30
1937.34    0.903   305.57
1938.34    0.900   305.85
1939.34    0.897   306.13
1940.34    0.893   306.40
1941.34    0.890   306.69
1942.34    0.886   306.97
1943.34    0.883   307.25
1944.34    0.879   307.54
1945.34    0.876   307.83
1946.34    0.872   308.13
1947.34    0.868   308.42
1948.34    0.864   308.72
1949.34    0.860   309.02
1950.34    0.856   309.32
1951.34    0.852   309.63
1952.34    0.848   309.94
1953.34    0.844   310.25
1954.34    0.840   310.57
1955.34    0.835   310.88
1956.34    0.831   311.21
1957.34    0.827   311.53
1958.34    0.822   311.86
1959.34    0.818   312.19
1960.34    0.813   312.53
1961.34    0.808   312.87
1962.34    0.803   313.21
1963.34    0.798   313.56
1964.34    0.793   313.92
1965.34    0.788   314.27
1966.34    0.783   314.63
1967.34    0.778   315.00
1968.34    0.773   315.37
1969.34    0.767   315.75
1970.34    0.762   316.13
1971.34    0.756   316.52
1972.34    0.751   316.91
1973.34    0.745   317.31
1974.34    0.739   317.72
1975.34    0.733   318.13
1976.34    0.727   318.55
1977.34    0.721   318.98
1978.34    0.714   319.41
1979.34    0.708   319.85
1980.34    0.701   320.30
1981.34    0.695   320.76
1982.34    0.688   321.23
1983.34    0.681   321.71
1984.34    0.674   322.19
1985.34    0.667   322.69
1986.34    0.659   323.20
1987.34    0.652   323.72
1988.34    0.644   324.25
1989.34    0.636   324.80
1990.34    0.628   325.36
1991.34    0.620   325.93
1992.34    0.612   326.52
1993.34    0.603   327.13
1994.34    0.594   327.75
1995.34    0.585   328.39
1996.34    0.576   329.06
1997.34    0.567   329.74
1998.34    0.557   330.45
1999.34    0.548   331.18
2000.34    0.538   331.94
2001.34    0.527   332.73
2002.34    0.517   333.55
2003.34    0.506   334.40
2004.34    0.495   335.30
2005.34    0.483   336.23
2006.34    0.472   337.21
2007.34    0.460   338.24
2008.34    0.447   339.33
2009.34    0.435   340.48
2010.34    0.422   341.69
2011.34    0.408   342.99
2012.34    0.395   344.38
2013.34    0.380   345.87
2014.34    0.366   347.47
2015.34    0.351   349.21
2016.34    0.336   351.11
2017.34    0.320   353.19
2018.34    0.304   355.49
2019.34    0.287   358.05
2020.34    0.271     0.92
2021.34    0.254     4.17
2022.34    0.237     7.89
2023.34    0.220    12.19
2024.34    0.203    17.19
2025.34    0.187    23.06
2026.34    0.173    29.98
2027.34    0.160    38.10
2028.34    0.150    47.48
2029.34    0.143    58.00
2030.34    0.140    69.27
2031.34    0.141    80.64
2032.34    0.147    91.45
2033.34    0.156   101.22
2034.34    0.168   109.76
2035.34    0.182   117.09
2036.34    0.197   123.35
2037.34    0.212   128.70
2038.34    0.228   133.32
2039.34    0.244   137.34
2040.34    0.259   140.88
2041.34    0.274   144.02
2042.34    0.289   146.84
2043.34    0.303   149.39
2044.34    0.317   151.72
2045.34    0.330   153.86
2046.34    0.342   155.84
2047.34    0.355   157.68
2048.34    0.366   159.40
2049.34    0.377   161.02
2050.34    0.388   162.54
2051.34    0.398   163.99
2052.34    0.408   165.36
2053.34    0.418   166.67
2054.34    0.427   167.92
2055.34    0.436   169.12
2056.34    0.445   170.27
2057.34    0.453   171.38
2058.34    0.461   172.45
2059.34    0.469   173.48
2060.34    0.477   174.48
2061.34    0.484   175.45
2062.34    0.491   176.39
2063.34    0.498   177.30
2064.34    0.505   178.19
2065.34    0.512   179.05
2066.34    0.518   179.89
2067.34    0.524   180.72
2068.34    0.530   181.52
2069.34    0.536   182.31
2070.34    0.542   183.08
2071.34    0.548   183.83
2072.34    0.553   184.57
2073.34    0.559   185.29
2074.34    0.564   186.00
2075.34    0.569   186.69
2076.34    0.574   187.38
2077.34    0.579   188.05
2078.34    0.584   188.71
2079.34    0.589   189.36
2080.34    0.594   190.00
2081.34    0.598   190.63
2082.34    0.603   191.25
2083.34    0.607   191.86
2084.34    0.611   192.46
2085.34    0.616   193.05
2086.34    0.620   193.64
2087.34    0.624   194.22
2088.34    0.628   194.79
2089.34    0.632   195.35
2090.34    0.636   195.91
2091.34    0.640   196.45
2092.34    0.644   197.00
2093.34    0.648   197.53
2094.34    0.651   198.06
2095.34    0.655   198.59
2096.34    0.659   199.10
2097.34    0.662   199.62
2098.34    0.666   200.12
2099.34    0.669   200.62
2100.34    0.673   201.12
2101.34    0.676   201.61
2102.34    0.680   202.10
2103.34    0.683   202.58
2104.34    0.686   203.06
2105.34    0.689   203.53
2106.34    0.693   204.00
2107.34    0.696   204.46
2108.34    0.699   204.92
2109.34    0.702   205.38
2110.34    0.705   205.83
2111.34    0.708   206.27
2112.34    0.711   206.72
2113.34    0.714   207.16
2114.34    0.717   207.59
2115.34    0.720   208.03
2116.34    0.723   208.46
2117.34    0.726   208.88
2118.34    0.729   209.30
2119.34    0.731   209.72
2120.34    0.734   210.14
2121.34    0.737   210.55
2122.34    0.740   210.96
2123.34    0.742   211.37
2124.34    0.745   211.77
2125.34    0.748   212.17
2126.34    0.750   212.57
2127.34    0.753   212.97
2128.34    0.756   213.36
2129.34    0.758   213.75
2130.34    0.761   214.14
2131.34    0.763   214.52
2132.34    0.766   214.91
2133.34    0.768   215.28
2134.34    0.771   215.66
2135.34    0.773   216.04
2136.34    0.776   216.41
2137.34    0.778   216.78
2138.34    0.781   217.15
2139.34    0.783   217.51
2140.34    0.785   217.88
2141.34    0.788   218.24
2142.34    0.790   218.60
2143.34    0.793   218.95
2144.34    0.795   219.31
2145.34    0.797   219.66
2146.34    0.799   220.01
2147.34    0.802   220.36
2148.34    0.804   220.71
2149.34    0.806   221.05
2150.34    0.808   221.39
2151.34    0.811   221.74
2152.34    0.813   222.08
2153.34    0.815   222.41
2154.34    0.817   222.75
2155.34    0.819   223.08
2156.34    0.821   223.41
2157.34    0.824   223.74
2158.34    0.826   224.07
2159.34    0.828   224.40
2160.34    0.830   224.72
2161.34    0.832   225.05
2162.34    0.834   225.37
2163.34    0.836   225.69
2164.34    0.838   226.01
2165.34    0.840   226.33
2166.34    0.842   226.64
2167.34    0.844   226.96
2168.34    0.846   227.27
2169.34    0.848   227.58
2170.34    0.850   227.89
2171.34    0.852   228.20
2172.34    0.854   228.51
2173.34    0.856   228.81
2174.34    0.858   229.12
2175.34    0.860   229.42
2176.34    0.862   229.72
2177.34    0.864   230.02
2178.34    0.866   230.32
2179.34    0.868   230.62
2180.34    0.870   230.91
2181.34    0.871   231.21
2182.34    0.873   231.50
2183.34    0.875   231.79
2184.34    0.877   232.08
2185.34    0.879   232.37
2186.34    0.881   232.66
2187.34    0.882   232.95
2188.34    0.884   233.24
2189.34    0.886   233.52
2190.34    0.888   233.81
2191.34    0.890   234.09
2192.34    0.891   234.37
2193.34    0.893   234.65
2194.34    0.895   234.93
2195.34    0.897   235.21
2196.34    0.898   235.49
2197.34    0.900   235.76
2198.34    0.902   236.04
2199.34    0.904   236.31
2200.34    0.905   236.59
2201.34    0.907   236.86
2202.34    0.909   237.13
2203.34    0.910   237.40
2204.34    0.912   237.67
2205.34    0.914   237.94
2206.34    0.915   238.21
2207.34    0.917   238.47
2208.34    0.919   238.74
2209.34    0.920   239.00
2210.34    0.922   239.26
2211.34    0.923   239.53
2212.34    0.925   239.79
2213.34    0.927   240.05
2214.34    0.928   240.31
2215.34    0.930   240.57
2216.34    0.931   240.83
2217.34    0.933   241.08
2218.34    0.934   241.34
2219.34    0.936   241.60
2220.34    0.938   241.85
2221.34    0.939   242.10
2222.34    0.941   242.36
2223.34    0.942   242.61
2224.34    0.944   242.86
2225.34    0.945   243.11
2226.34    0.947   243.36
2227.34    0.948   243.61
2228.34    0.950   243.86
2229.34    0.951   244.11
2230.34    0.953   244.35
2231.34    0.954   244.60
2232.34    0.955   244.84
2233.34    0.957   245.09
2234.34    0.958   245.33
2235.34    0.960   245.57
2236.34    0.961   245.82
2237.34    0.963   246.06
2238.34    0.964   246.30
2239.34    0.965   246.54
2240.34    0.967   246.78
2241.34    0.968   247.02
2242.34    0.969   247.26
2243.34    0.971   247.49
2244.34    0.972   247.73
2245.34    0.974   247.97
2246.34    0.975   248.20
2247.34    0.976   248.44
2248.34    0.977   248.67
2249.34    0.979   248.90
2250.34    0.980   249.14
2251.34    0.981   249.37
2252.34    0.983   249.60
2253.34    0.984   249.83
2254.34    0.985   250.06
2255.34    0.987   250.29
2256.34    0.988   250.52
2257.34    0.989   250.75
2258.34    0.990   250.98
2259.34    0.992   251.21
2260.34    0.993   251.43
2261.34    0.994   251.66
2262.34    0.995   251.89
2263.34    0.996   252.11
2264.34    0.998   252.34
2265.34    0.999   252.56
2266.34    1.000   252.78
2267.34    1.001   253.01
2268.34    1.002   253.23
2269.34    1.003   253.45
2270.34    1.005   253.67
2271.34    1.006   253.90
2272.34    1.007   254.12
2273.34    1.008   254.34
2274.34    1.009   254.56
2275.34    1.010   254.78
2276.34    1.011   254.99
2277.34    1.012   255.21
2278.34    1.013   255.43
2279.34    1.015   255.65
2280.34    1.016   255.86
2281.34    1.017   256.08
2282.34    1.018   256.30
2283.34    1.019   256.51
2284.34    1.020   256.73
2285.34    1.021   256.94
2286.34    1.022   257.16
2287.34    1.023   257.37
2288.34    1.024   257.58
2289.34    1.025   257.80
2290.34    1.026   258.01
2291.34    1.027   258.22
2292.34    1.028   258.43
2293.34    1.029   258.64
2294.34    1.030   258.86
2295.34    1.031   259.07
2296.34    1.032   259.28
2297.34    1.033   259.49
2298.34    1.033   259.70
2299.34    1.034   259.90
2300.34    1.035   260.11
2301.34    1.036   260.32
2302.34    1.037   260.53
2303.34    1.038   260.74
2304.34    1.039   260.94
2305.34    1.040   261.15
2306.34    1.040   261.36
2307.34    1.041   261.56
2308.34    1.042   261.77
2309.34    1.043   261.98
2310.34    1.044   262.18
2311.34    1.045   262.39
2312.34    1.045   262.59
2313.34    1.046   262.80
2314.34    1.047   263.00
2315.34    1.048   263.20






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 15:51:25



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