Double Star Calculator - Orbit

Orbital Elements for COU2459AB
WDS: COU2459AB WDS ID/Discoverer
P: 633.600 Orbital period (years)
a: 1.833 Semi-major axis (arcseconds)
i: 120.9 Inclination (degrees)
Ω: 95.9 Longitude of ascending node (degrees)
T: 2586.000 Epoch of periastron passage (year)
e: 0.445 Eccentricity
ω: 223.6 Longitude of periastron (degrees)
Start-Year: 1708.2 Year
End-Year: 2341.8 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for COU2459AB
Position: 042432.79+505042.6 Epoch-2000 right ascension and declination
WDS-ID: 04245+5051 WDS designation
Discoverer Code: COU2459AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 27673 HD catalog number
Hipparcos number: 20586 Hipparcos catalog number
V1: 7.05 Magnitude of the primary
V2: 10.19 Magnitude of the secondary
Equinox: Equinox
Date: 2016 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: Ksr2021 Reference

Double Star Orbit for COU2459AB



WDS 6th Orbit including measures of COU2459AB

-- 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 COU2459AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.191   122.71
--------------------------
1708.20    1.667    52.18
1709.20    1.660    51.87
1710.20    1.653    51.55
1711.20    1.645    51.22
1712.20    1.638    50.90
1713.20    1.631    50.57
1714.20    1.623    50.24
1715.20    1.616    49.90
1716.20    1.608    49.57
1717.20    1.601    49.22
1718.20    1.594    48.88
1719.20    1.586    48.53
1720.20    1.579    48.18
1721.20    1.571    47.83
1722.20    1.564    47.47
1723.20    1.557    47.11
1724.20    1.549    46.75
1725.20    1.542    46.38
1726.20    1.534    46.01
1727.20    1.527    45.63
1728.20    1.520    45.26
1729.20    1.512    44.87
1730.20    1.505    44.49
1731.20    1.498    44.10
1732.20    1.490    43.70
1733.20    1.483    43.31
1734.20    1.476    42.91
1735.20    1.468    42.50
1736.20    1.461    42.09
1737.20    1.454    41.68
1738.20    1.446    41.26
1739.20    1.439    40.84
1740.20    1.432    40.41
1741.20    1.425    39.98
1742.20    1.417    39.55
1743.20    1.410    39.11
1744.20    1.403    38.66
1745.20    1.396    38.22
1746.20    1.389    37.76
1747.20    1.382    37.31
1748.20    1.375    36.84
1749.20    1.368    36.38
1750.20    1.361    35.90
1751.20    1.354    35.43
1752.20    1.347    34.95
1753.20    1.340    34.46
1754.20    1.333    33.97
1755.20    1.326    33.47
1756.20    1.320    32.97
1757.20    1.313    32.46
1758.20    1.306    31.95
1759.20    1.300    31.44
1760.20    1.293    30.91
1761.20    1.287    30.39
1762.20    1.280    29.85
1763.20    1.274    29.31
1764.20    1.267    28.77
1765.20    1.261    28.22
1766.20    1.255    27.67
1767.20    1.249    27.11
1768.20    1.242    26.54
1769.20    1.236    25.97
1770.20    1.230    25.39
1771.20    1.224    24.81
1772.20    1.218    24.22
1773.20    1.213    23.62
1774.20    1.207    23.02
1775.20    1.201    22.42
1776.20    1.196    21.81
1777.20    1.190    21.19
1778.20    1.185    20.57
1779.20    1.179    19.94
1780.20    1.174    19.30
1781.20    1.169    18.66
1782.20    1.163    18.02
1783.20    1.158    17.37
1784.20    1.153    16.71
1785.20    1.149    16.05
1786.20    1.144    15.38
1787.20    1.139    14.71
1788.20    1.134    14.03
1789.20    1.130    13.34
1790.20    1.126    12.65
1791.20    1.121    11.96
1792.20    1.117    11.25
1793.20    1.113    10.55
1794.20    1.109     9.84
1795.20    1.105     9.12
1796.20    1.101     8.40
1797.20    1.098     7.67
1798.20    1.094     6.94
1799.20    1.091     6.21
1800.20    1.087     5.47
1801.20    1.084     4.72
1802.20    1.081     3.97
1803.20    1.078     3.22
1804.20    1.075     2.46
1805.20    1.072     1.70
1806.20    1.070     0.93
1807.20    1.067     0.16
1808.20    1.065   359.39
1809.20    1.062   358.61
1810.20    1.060   357.83
1811.20    1.058   357.05
1812.20    1.056   356.27
1813.20    1.054   355.48
1814.20    1.053   354.69
1815.20    1.051   353.89
1816.20    1.050   353.10
1817.20    1.048   352.30
1818.20    1.047   351.50
1819.20    1.046   350.70
1820.20    1.045   349.90
1821.20    1.044   349.09
1822.20    1.044   348.29
1823.20    1.043   347.48
1824.20    1.043   346.67
1825.20    1.042   345.86
1826.20    1.042   345.06
1827.20    1.042   344.25
1828.20    1.042   343.44
1829.20    1.042   342.63
1830.20    1.043   341.82
1831.20    1.043   341.02
1832.20    1.044   340.21
1833.20    1.044   339.40
1834.20    1.045   338.60
1835.20    1.046   337.80
1836.20    1.047   336.99
1837.20    1.048   336.19
1838.20    1.049   335.39
1839.20    1.050   334.60
1840.20    1.051   333.80
1841.20    1.053   333.01
1842.20    1.054   332.22
1843.20    1.056   331.43
1844.20    1.058   330.64
1845.20    1.060   329.86
1846.20    1.062   329.08
1847.20    1.064   328.30
1848.20    1.066   327.53
1849.20    1.068   326.76
1850.20    1.070   325.99
1851.20    1.072   325.22
1852.20    1.075   324.46
1853.20    1.077   323.70
1854.20    1.079   322.95
1855.20    1.082   322.19
1856.20    1.084   321.44
1857.20    1.087   320.70
1858.20    1.090   319.96
1859.20    1.092   319.22
1860.20    1.095   318.49
1861.20    1.098   317.76
1862.20    1.101   317.03
1863.20    1.103   316.31
1864.20    1.106   315.59
1865.20    1.109   314.87
1866.20    1.112   314.16
1867.20    1.115   313.45
1868.20    1.118   312.75
1869.20    1.121   312.05
1870.20    1.123   311.35
1871.20    1.126   310.66
1872.20    1.129   309.97
1873.20    1.132   309.28
1874.20    1.135   308.60
1875.20    1.137   307.92
1876.20    1.140   307.24
1877.20    1.143   306.57
1878.20    1.145   305.89
1879.20    1.148   305.23
1880.20    1.151   304.56
1881.20    1.153   303.90
1882.20    1.155   303.24
1883.20    1.158   302.58
1884.20    1.160   301.93
1885.20    1.162   301.28
1886.20    1.164   300.63
1887.20    1.166   299.98
1888.20    1.168   299.34
1889.20    1.170   298.70
1890.20    1.171   298.06
1891.20    1.173   297.42
1892.20    1.174   296.78
1893.20    1.175   296.14
1894.20    1.176   295.51
1895.20    1.177   294.87
1896.20    1.178   294.24
1897.20    1.179   293.61
1898.20    1.179   292.98
1899.20    1.180   292.35
1900.20    1.180   291.72
1901.20    1.180   291.09
1902.20    1.179   290.45
1903.20    1.179   289.82
1904.20    1.178   289.19
1905.20    1.178   288.56
1906.20    1.176   287.92
1907.20    1.175   287.29
1908.20    1.174   286.65
1909.20    1.172   286.01
1910.20    1.170   285.37
1911.20    1.168   284.73
1912.20    1.165   284.09
1913.20    1.162   283.44
1914.20    1.159   282.79
1915.20    1.156   282.13
1916.20    1.152   281.47
1917.20    1.148   280.81
1918.20    1.144   280.14
1919.20    1.140   279.47
1920.20    1.135   278.79
1921.20    1.130   278.10
1922.20    1.124   277.41
1923.20    1.119   276.71
1924.20    1.113   276.01
1925.20    1.106   275.30
1926.20    1.100   274.57
1927.20    1.093   273.84
1928.20    1.085   273.10
1929.20    1.078   272.35
1930.20    1.070   271.59
1931.20    1.062   270.82
1932.20    1.053   270.03
1933.20    1.044   269.23
1934.20    1.035   268.42
1935.20    1.025   267.59
1936.20    1.015   266.75
1937.20    1.005   265.89
1938.20    0.995   265.01
1939.20    0.984   264.12
1940.20    0.973   263.20
1941.20    0.961   262.26
1942.20    0.950   261.30
1943.20    0.938   260.31
1944.20    0.926   259.30
1945.20    0.914   258.26
1946.20    0.901   257.20
1947.20    0.888   256.10
1948.20    0.876   254.97
1949.20    0.863   253.81
1950.20    0.849   252.61
1951.20    0.836   251.38
1952.20    0.823   250.10
1953.20    0.809   248.78
1954.20    0.796   247.42
1955.20    0.783   246.01
1956.20    0.769   244.55
1957.20    0.756   243.04
1958.20    0.743   241.48
1959.20    0.730   239.86
1960.20    0.717   238.18
1961.20    0.704   236.44
1962.20    0.692   234.64
1963.20    0.680   232.77
1964.20    0.668   230.84
1965.20    0.657   228.84
1966.20    0.646   226.77
1967.20    0.636   224.64
1968.20    0.627   222.44
1969.20    0.618   220.17
1970.20    0.609   217.83
1971.20    0.602   215.44
1972.20    0.595   212.98
1973.20    0.589   210.48
1974.20    0.584   207.92
1975.20    0.579   205.33
1976.20    0.576   202.69
1977.20    0.574   200.04
1978.20    0.572   197.36
1979.20    0.572   194.68
1980.20    0.573   192.00
1981.20    0.574   189.33
1982.20    0.577   186.67
1983.20    0.580   184.05
1984.20    0.585   181.46
1985.20    0.590   178.92
1986.20    0.597   176.42
1987.20    0.604   173.99
1988.20    0.612   171.61
1989.20    0.621   169.30
1990.20    0.630   167.05
1991.20    0.641   164.88
1992.20    0.652   162.77
1993.20    0.663   160.74
1994.20    0.675   158.78
1995.20    0.688   156.89
1996.20    0.701   155.07
1997.20    0.715   153.32
1998.20    0.729   151.63
1999.20    0.743   150.01
2000.20    0.758   148.45
2001.20    0.773   146.95
2002.20    0.788   145.51
2003.20    0.804   144.12
2004.20    0.820   142.79
2005.20    0.836   141.51
2006.20    0.852   140.28
2007.20    0.868   139.09
2008.20    0.885   137.95
2009.20    0.901   136.85
2010.20    0.918   135.78
2011.20    0.935   134.76
2012.20    0.951   133.77
2013.20    0.968   132.82
2014.20    0.985   131.90
2015.20    1.002   131.01
2016.20    1.019   130.15
2017.20    1.036   129.32
2018.20    1.053   128.51
2019.20    1.070   127.73
2020.20    1.086   126.98
2021.20    1.103   126.25
2022.20    1.120   125.54
2023.20    1.137   124.85
2024.20    1.153   124.18
2025.20    1.170   123.53
2026.20    1.186   122.89
2027.20    1.203   122.28
2028.20    1.219   121.68
2029.20    1.235   121.10
2030.20    1.251   120.53
2031.20    1.268   119.97
2032.20    1.284   119.44
2033.20    1.299   118.91
2034.20    1.315   118.39
2035.20    1.331   117.89
2036.20    1.346   117.40
2037.20    1.362   116.92
2038.20    1.377   116.46
2039.20    1.392   116.00
2040.20    1.407   115.55
2041.20    1.422   115.11
2042.20    1.437   114.68
2043.20    1.452   114.26
2044.20    1.467   113.85
2045.20    1.481   113.45
2046.20    1.495   113.05
2047.20    1.510   112.66
2048.20    1.524   112.28
2049.20    1.538   111.90
2050.20    1.552   111.54
2051.20    1.565   111.17
2052.20    1.579   110.82
2053.20    1.592   110.47
2054.20    1.606   110.13
2055.20    1.619   109.79
2056.20    1.632   109.46
2057.20    1.645   109.13
2058.20    1.658   108.81
2059.20    1.670   108.49
2060.20    1.683   108.18
2061.20    1.695   107.87
2062.20    1.708   107.57
2063.20    1.720   107.27
2064.20    1.732   106.97
2065.20    1.744   106.68
2066.20    1.756   106.40
2067.20    1.767   106.11
2068.20    1.779   105.83
2069.20    1.790   105.56
2070.20    1.802   105.29
2071.20    1.813   105.02
2072.20    1.824   104.75
2073.20    1.835   104.49
2074.20    1.845   104.23
2075.20    1.856   103.97
2076.20    1.867   103.72
2077.20    1.877   103.47
2078.20    1.887   103.22
2079.20    1.897   102.98
2080.20    1.907   102.73
2081.20    1.917   102.49
2082.20    1.927   102.26
2083.20    1.937   102.02
2084.20    1.946   101.79
2085.20    1.956   101.56
2086.20    1.965   101.33
2087.20    1.974   101.10
2088.20    1.983   100.88
2089.20    1.992   100.66
2090.20    2.001   100.44
2091.20    2.010   100.22
2092.20    2.018   100.00
2093.20    2.027    99.79
2094.20    2.035    99.57
2095.20    2.043    99.36
2096.20    2.051    99.15
2097.20    2.059    98.94
2098.20    2.067    98.74
2099.20    2.075    98.53
2100.20    2.083    98.33
2101.20    2.090    98.13
2102.20    2.097    97.93
2103.20    2.105    97.73
2104.20    2.112    97.53
2105.20    2.119    97.34
2106.20    2.126    97.14
2107.20    2.133    96.95
2108.20    2.140    96.76
2109.20    2.146    96.56
2110.20    2.153    96.37
2111.20    2.159    96.19
2112.20    2.166    96.00
2113.20    2.172    95.81
2114.20    2.178    95.63
2115.20    2.184    95.44
2116.20    2.190    95.26
2117.20    2.196    95.07
2118.20    2.202    94.89
2119.20    2.207    94.71
2120.20    2.213    94.53
2121.20    2.218    94.35
2122.20    2.223    94.18
2123.20    2.229    94.00
2124.20    2.234    93.82
2125.20    2.239    93.65
2126.20    2.244    93.47
2127.20    2.248    93.30
2128.20    2.253    93.12
2129.20    2.258    92.95
2130.20    2.262    92.78
2131.20    2.267    92.61
2132.20    2.271    92.44
2133.20    2.275    92.27
2134.20    2.279    92.10
2135.20    2.283    91.93
2136.20    2.287    91.76
2137.20    2.291    91.59
2138.20    2.295    91.43
2139.20    2.298    91.26
2140.20    2.302    91.10
2141.20    2.306    90.93
2142.20    2.309    90.76
2143.20    2.312    90.60
2144.20    2.315    90.44
2145.20    2.319    90.27
2146.20    2.322    90.11
2147.20    2.324    89.95
2148.20    2.327    89.78
2149.20    2.330    89.62
2150.20    2.333    89.46
2151.20    2.335    89.30
2152.20    2.338    89.14
2153.20    2.340    88.98
2154.20    2.343    88.82
2155.20    2.345    88.66
2156.20    2.347    88.50
2157.20    2.349    88.34
2158.20    2.351    88.18
2159.20    2.353    88.02
2160.20    2.355    87.86
2161.20    2.356    87.71
2162.20    2.358    87.55
2163.20    2.360    87.39
2164.20    2.361    87.23
2165.20    2.363    87.08
2166.20    2.364    86.92
2167.20    2.365    86.76
2168.20    2.366    86.60
2169.20    2.367    86.45
2170.20    2.368    86.29
2171.20    2.369    86.13
2172.20    2.370    85.98
2173.20    2.371    85.82
2174.20    2.372    85.67
2175.20    2.372    85.51
2176.20    2.373    85.35
2177.20    2.373    85.20
2178.20    2.374    85.04
2179.20    2.374    84.89
2180.20    2.374    84.73
2181.20    2.374    84.57
2182.20    2.374    84.42
2183.20    2.374    84.26
2184.20    2.374    84.11
2185.20    2.374    83.95
2186.20    2.374    83.80
2187.20    2.374    83.64
2188.20    2.373    83.48
2189.20    2.373    83.33
2190.20    2.372    83.17
2191.20    2.372    83.02
2192.20    2.371    82.86
2193.20    2.371    82.70
2194.20    2.370    82.55
2195.20    2.369    82.39
2196.20    2.368    82.23
2197.20    2.367    82.08
2198.20    2.366    81.92
2199.20    2.365    81.76
2200.20    2.364    81.61
2201.20    2.362    81.45
2202.20    2.361    81.29
2203.20    2.360    81.14
2204.20    2.358    80.98
2205.20    2.357    80.82
2206.20    2.355    80.66
2207.20    2.353    80.50
2208.20    2.352    80.34
2209.20    2.350    80.19
2210.20    2.348    80.03
2211.20    2.346    79.87
2212.20    2.344    79.71
2213.20    2.342    79.55
2214.20    2.340    79.39
2215.20    2.338    79.23
2216.20    2.336    79.07
2217.20    2.333    78.90
2218.20    2.331    78.74
2219.20    2.328    78.58
2220.20    2.326    78.42
2221.20    2.323    78.26
2222.20    2.321    78.09
2223.20    2.318    77.93
2224.20    2.315    77.77
2225.20    2.313    77.60
2226.20    2.310    77.44
2227.20    2.307    77.27
2228.20    2.304    77.11
2229.20    2.301    76.94
2230.20    2.298    76.78
2231.20    2.295    76.61
2232.20    2.291    76.44
2233.20    2.288    76.28
2234.20    2.285    76.11
2235.20    2.281    75.94
2236.20    2.278    75.77
2237.20    2.275    75.60
2238.20    2.271    75.43
2239.20    2.267    75.26
2240.20    2.264    75.09
2241.20    2.260    74.92
2242.20    2.256    74.75
2243.20    2.252    74.57
2244.20    2.249    74.40
2245.20    2.245    74.23
2246.20    2.241    74.05
2247.20    2.237    73.88
2248.20    2.233    73.70
2249.20    2.228    73.52
2250.20    2.224    73.35
2251.20    2.220    73.17
2252.20    2.216    72.99
2253.20    2.211    72.81
2254.20    2.207    72.63
2255.20    2.203    72.45
2256.20    2.198    72.27
2257.20    2.193    72.09
2258.20    2.189    71.91
2259.20    2.184    71.72
2260.20    2.180    71.54
2261.20    2.175    71.35
2262.20    2.170    71.17
2263.20    2.165    70.98
2264.20    2.160    70.79
2265.20    2.155    70.60
2266.20    2.150    70.41
2267.20    2.145    70.22
2268.20    2.140    70.03
2269.20    2.135    69.84
2270.20    2.130    69.65
2271.20    2.125    69.45
2272.20    2.120    69.26
2273.20    2.114    69.06
2274.20    2.109    68.86
2275.20    2.104    68.67
2276.20    2.098    68.47
2277.20    2.093    68.27
2278.20    2.087    68.07
2279.20    2.082    67.86
2280.20    2.076    67.66
2281.20    2.070    67.46
2282.20    2.065    67.25
2283.20    2.059    67.05
2284.20    2.053    66.84
2285.20    2.047    66.63
2286.20    2.042    66.42
2287.20    2.036    66.21
2288.20    2.030    66.00
2289.20    2.024    65.78
2290.20    2.018    65.57
2291.20    2.012    65.35
2292.20    2.006    65.13
2293.20    2.000    64.91
2294.20    1.993    64.69
2295.20    1.987    64.47
2296.20    1.981    64.25
2297.20    1.975    64.02
2298.20    1.969    63.80
2299.20    1.962    63.57
2300.20    1.956    63.34
2301.20    1.949    63.11
2302.20    1.943    62.88
2303.20    1.937    62.65
2304.20    1.930    62.41
2305.20    1.924    62.18
2306.20    1.917    61.94
2307.20    1.910    61.70
2308.20    1.904    61.46
2309.20    1.897    61.21
2310.20    1.890    60.97
2311.20    1.884    60.72
2312.20    1.877    60.47
2313.20    1.870    60.22
2314.20    1.864    59.97
2315.20    1.857    59.72
2316.20    1.850    59.46
2317.20    1.843    59.21
2318.20    1.836    58.95
2319.20    1.829    58.68
2320.20    1.822    58.42
2321.20    1.815    58.16
2322.20    1.808    57.89
2323.20    1.801    57.62
2324.20    1.794    57.35
2325.20    1.787    57.07
2326.20    1.780    56.80
2327.20    1.773    56.52
2328.20    1.766    56.24
2329.20    1.759    55.96
2330.20    1.752    55.67
2331.20    1.744    55.38
2332.20    1.737    55.09
2333.20    1.730    54.80
2334.20    1.723    54.51
2335.20    1.716    54.21
2336.20    1.708    53.91
2337.20    1.701    53.61
2338.20    1.694    53.30
2339.20    1.686    53.00
2340.20    1.679    52.69
2341.20    1.672    52.37






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 15:23:05



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