Double Star Calculator - Orbit

Orbital Elements for COU357
WDS: COU357 WDS ID/Discoverer
P: 393.800 Orbital period (years)
a: 0.369 Semi-major axis (arcseconds)
i: 123.0 Inclination (degrees)
Ω: 128.9 Longitude of ascending node (degrees)
T: 2360.800 Epoch of periastron passage (year)
e: 0.253 Eccentricity
ω: 316.0 Longitude of periastron (degrees)
Start-Year: 1828.1 Year
End-Year: 2221.9 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for COU357
Position: 022501.89+252912.9 Epoch-2000 right ascension and declination
WDS-ID: 02250+2529 WDS designation
Discoverer Code: COU357 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 14918 HD catalog number
Hipparcos number: 11265 Hipparcos catalog number
V1: 8.28 Magnitude of the primary
V2: 9.39 Magnitude of the secondary
Equinox: Equinox
Date: 2013 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Ksr2021 Reference

Double Star Orbit for COU357



WDS 6th Orbit including measures of COU357

-- 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 COU357
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.286   105.79
--------------------------
1828.10    0.432   314.43
1829.10    0.432   314.07
1830.10    0.432   313.72
1831.10    0.431   313.37
1832.10    0.431   313.02
1833.10    0.430   312.67
1834.10    0.430   312.31
1835.10    0.429   311.96
1836.10    0.429   311.60
1837.10    0.428   311.24
1838.10    0.427   310.88
1839.10    0.426   310.52
1840.10    0.426   310.16
1841.10    0.425   309.80
1842.10    0.424   309.43
1843.10    0.423   309.07
1844.10    0.422   308.70
1845.10    0.421   308.33
1846.10    0.419   307.96
1847.10    0.418   307.58
1848.10    0.417   307.21
1849.10    0.415   306.83
1850.10    0.414   306.45
1851.10    0.413   306.06
1852.10    0.411   305.68
1853.10    0.410   305.29
1854.10    0.408   304.89
1855.10    0.406   304.50
1856.10    0.404   304.10
1857.10    0.403   303.70
1858.10    0.401   303.29
1859.10    0.399   302.88
1860.10    0.397   302.47
1861.10    0.395   302.05
1862.10    0.393   301.63
1863.10    0.391   301.20
1864.10    0.389   300.77
1865.10    0.386   300.33
1866.10    0.384   299.89
1867.10    0.382   299.44
1868.10    0.379   298.99
1869.10    0.377   298.53
1870.10    0.374   298.06
1871.10    0.372   297.59
1872.10    0.369   297.11
1873.10    0.366   296.63
1874.10    0.364   296.13
1875.10    0.361   295.63
1876.10    0.358   295.13
1877.10    0.355   294.61
1878.10    0.352   294.08
1879.10    0.349   293.55
1880.10    0.346   293.01
1881.10    0.343   292.45
1882.10    0.340   291.89
1883.10    0.336   291.32
1884.10    0.333   290.73
1885.10    0.330   290.13
1886.10    0.326   289.52
1887.10    0.323   288.90
1888.10    0.319   288.26
1889.10    0.316   287.61
1890.10    0.312   286.95
1891.10    0.309   286.27
1892.10    0.305   285.57
1893.10    0.301   284.86
1894.10    0.298   284.13
1895.10    0.294   283.38
1896.10    0.290   282.61
1897.10    0.286   281.82
1898.10    0.283   281.01
1899.10    0.279   280.18
1900.10    0.275   279.32
1901.10    0.271   278.44
1902.10    0.267   277.53
1903.10    0.263   276.60
1904.10    0.259   275.64
1905.10    0.255   274.64
1906.10    0.251   273.62
1907.10    0.247   272.56
1908.10    0.243   271.47
1909.10    0.239   270.34
1910.10    0.235   269.17
1911.10    0.231   267.96
1912.10    0.227   266.71
1913.10    0.223   265.42
1914.10    0.219   264.08
1915.10    0.216   262.69
1916.10    0.212   261.26
1917.10    0.208   259.77
1918.10    0.204   258.23
1919.10    0.201   256.63
1920.10    0.197   254.98
1921.10    0.194   253.26
1922.10    0.191   251.49
1923.10    0.187   249.65
1924.10    0.184   247.75
1925.10    0.181   245.79
1926.10    0.179   243.76
1927.10    0.176   241.67
1928.10    0.173   239.52
1929.10    0.171   237.31
1930.10    0.169   235.04
1931.10    0.167   232.71
1932.10    0.165   230.34
1933.10    0.164   227.91
1934.10    0.162   225.44
1935.10    0.161   222.93
1936.10    0.160   220.40
1937.10    0.160   217.84
1938.10    0.159   215.26
1939.10    0.159   212.68
1940.10    0.159   210.09
1941.10    0.160   207.51
1942.10    0.160   204.95
1943.10    0.161   202.41
1944.10    0.162   199.89
1945.10    0.163   197.42
1946.10    0.165   194.98
1947.10    0.166   192.59
1948.10    0.168   190.25
1949.10    0.170   187.96
1950.10    0.173   185.73
1951.10    0.175   183.56
1952.10    0.177   181.45
1953.10    0.180   179.39
1954.10    0.183   177.40
1955.10    0.186   175.47
1956.10    0.189   173.60
1957.10    0.192   171.79
1958.10    0.195   170.03
1959.10    0.198   168.33
1960.10    0.201   166.68
1961.10    0.204   165.09
1962.10    0.208   163.55
1963.10    0.211   162.05
1964.10    0.214   160.60
1965.10    0.218   159.20
1966.10    0.221   157.83
1967.10    0.224   156.51
1968.10    0.228   155.23
1969.10    0.231   153.98
1970.10    0.234   152.77
1971.10    0.237   151.59
1972.10    0.240   150.44
1973.10    0.244   149.32
1974.10    0.247   148.22
1975.10    0.250   147.16
1976.10    0.252   146.12
1977.10    0.255   145.10
1978.10    0.258   144.10
1979.10    0.261   143.13
1980.10    0.263   142.17
1981.10    0.266   141.23
1982.10    0.268   140.31
1983.10    0.271   139.41
1984.10    0.273   138.52
1985.10    0.275   137.65
1986.10    0.277   136.79
1987.10    0.279   135.94
1988.10    0.281   135.10
1989.10    0.283   134.28
1990.10    0.284   133.46
1991.10    0.286   132.65
1992.10    0.287   131.86
1993.10    0.289   131.07
1994.10    0.290   130.28
1995.10    0.291   129.51
1996.10    0.292   128.74
1997.10    0.293   127.97
1998.10    0.294   127.21
1999.10    0.295   126.46
2000.10    0.296   125.71
2001.10    0.296   124.96
2002.10    0.297   124.22
2003.10    0.297   123.47
2004.10    0.298   122.73
2005.10    0.298   121.99
2006.10    0.298   121.26
2007.10    0.298   120.52
2008.10    0.298   119.78
2009.10    0.298   119.04
2010.10    0.298   118.31
2011.10    0.298   117.57
2012.10    0.297   116.83
2013.10    0.297   116.08
2014.10    0.297   115.34
2015.10    0.296   114.59
2016.10    0.295   113.84
2017.10    0.295   113.09
2018.10    0.294   112.33
2019.10    0.293   111.57
2020.10    0.292   110.81
2021.10    0.291   110.04
2022.10    0.290   109.26
2023.10    0.289   108.48
2024.10    0.288   107.70
2025.10    0.287   106.91
2026.10    0.286   106.11
2027.10    0.285   105.30
2028.10    0.284   104.49
2029.10    0.282   103.67
2030.10    0.281   102.85
2031.10    0.280   102.01
2032.10    0.278   101.17
2033.10    0.277   100.32
2034.10    0.275    99.46
2035.10    0.274    98.59
2036.10    0.272    97.71
2037.10    0.271    96.82
2038.10    0.269    95.92
2039.10    0.268    95.02
2040.10    0.266    94.10
2041.10    0.265    93.17
2042.10    0.263    92.23
2043.10    0.262    91.27
2044.10    0.260    90.31
2045.10    0.259    89.34
2046.10    0.257    88.35
2047.10    0.256    87.35
2048.10    0.254    86.34
2049.10    0.253    85.32
2050.10    0.251    84.28
2051.10    0.250    83.24
2052.10    0.248    82.18
2053.10    0.247    81.11
2054.10    0.245    80.02
2055.10    0.244    78.92
2056.10    0.243    77.82
2057.10    0.241    76.70
2058.10    0.240    75.56
2059.10    0.239    74.42
2060.10    0.238    73.26
2061.10    0.236    72.09
2062.10    0.235    70.92
2063.10    0.234    69.73
2064.10    0.233    68.53
2065.10    0.232    67.32
2066.10    0.231    66.10
2067.10    0.231    64.87
2068.10    0.230    63.63
2069.10    0.229    62.39
2070.10    0.229    61.13
2071.10    0.228    59.88
2072.10    0.227    58.61
2073.10    0.227    57.34
2074.10    0.227    56.06
2075.10    0.226    54.78
2076.10    0.226    53.50
2077.10    0.226    52.22
2078.10    0.226    50.93
2079.10    0.226    49.64
2080.10    0.226    48.35
2081.10    0.226    47.07
2082.10    0.226    45.78
2083.10    0.226    44.50
2084.10    0.227    43.22
2085.10    0.227    41.94
2086.10    0.227    40.67
2087.10    0.228    39.41
2088.10    0.229    38.15
2089.10    0.229    36.90
2090.10    0.230    35.66
2091.10    0.231    34.42
2092.10    0.232    33.19
2093.10    0.233    31.98
2094.10    0.234    30.77
2095.10    0.235    29.58
2096.10    0.236    28.39
2097.10    0.237    27.22
2098.10    0.238    26.06
2099.10    0.240    24.91
2100.10    0.241    23.78
2101.10    0.243    22.65
2102.10    0.244    21.55
2103.10    0.246    20.45
2104.10    0.247    19.37
2105.10    0.249    18.30
2106.10    0.250    17.25
2107.10    0.252    16.21
2108.10    0.254    15.19
2109.10    0.256    14.18
2110.10    0.258    13.18
2111.10    0.260    12.20
2112.10    0.261    11.24
2113.10    0.263    10.28
2114.10    0.265     9.35
2115.10    0.267     8.42
2116.10    0.270     7.51
2117.10    0.272     6.62
2118.10    0.274     5.73
2119.10    0.276     4.87
2120.10    0.278     4.01
2121.10    0.280     3.17
2122.10    0.282     2.34
2123.10    0.285     1.52
2124.10    0.287     0.72
2125.10    0.289   359.93
2126.10    0.291   359.15
2127.10    0.294   358.39
2128.10    0.296   357.63
2129.10    0.298   356.89
2130.10    0.301   356.16
2131.10    0.303   355.44
2132.10    0.305   354.73
2133.10    0.308   354.03
2134.10    0.310   353.34
2135.10    0.312   352.66
2136.10    0.315   351.99
2137.10    0.317   351.33
2138.10    0.319   350.69
2139.10    0.322   350.05
2140.10    0.324   349.42
2141.10    0.326   348.80
2142.10    0.328   348.18
2143.10    0.331   347.58
2144.10    0.333   346.99
2145.10    0.335   346.40
2146.10    0.338   345.82
2147.10    0.340   345.25
2148.10    0.342   344.68
2149.10    0.344   344.13
2150.10    0.347   343.58
2151.10    0.349   343.04
2152.10    0.351   342.50
2153.10    0.353   341.97
2154.10    0.355   341.45
2155.10    0.358   340.93
2156.10    0.360   340.42
2157.10    0.362   339.92
2158.10    0.364   339.42
2159.10    0.366   338.93
2160.10    0.368   338.44
2161.10    0.370   337.96
2162.10    0.372   337.49
2163.10    0.374   337.02
2164.10    0.376   336.55
2165.10    0.378   336.09
2166.10    0.380   335.63
2167.10    0.382   335.18
2168.10    0.384   334.73
2169.10    0.386   334.29
2170.10    0.387   333.85
2171.10    0.389   333.42
2172.10    0.391   332.99
2173.10    0.393   332.56
2174.10    0.394   332.13
2175.10    0.396   331.72
2176.10    0.398   331.30
2177.10    0.399   330.89
2178.10    0.401   330.48
2179.10    0.403   330.07
2180.10    0.404   329.67
2181.10    0.406   329.27
2182.10    0.407   328.87
2183.10    0.408   328.48
2184.10    0.410   328.08
2185.10    0.411   327.69
2186.10    0.412   327.31
2187.10    0.414   326.92
2188.10    0.415   326.54
2189.10    0.416   326.16
2190.10    0.417   325.78
2191.10    0.418   325.41
2192.10    0.420   325.03
2193.10    0.421   324.66
2194.10    0.422   324.29
2195.10    0.423   323.92
2196.10    0.424   323.56
2197.10    0.424   323.19
2198.10    0.425   322.83
2199.10    0.426   322.47
2200.10    0.427   322.11
2201.10    0.428   321.75
2202.10    0.428   321.39
2203.10    0.429   321.03
2204.10    0.429   320.68
2205.10    0.430   320.32
2206.10    0.431   319.97
2207.10    0.431   319.61
2208.10    0.431   319.26
2209.10    0.432   318.91
2210.10    0.432   318.56
2211.10    0.432   318.21
2212.10    0.433   317.86
2213.10    0.433   317.51
2214.10    0.433   317.16
2215.10    0.433   316.81
2216.10    0.433   316.46
2217.10    0.433   316.11
2218.10    0.433   315.76
2219.10    0.433   315.41
2220.10    0.433   315.06
2221.10    0.433   314.71






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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.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 15:00:01



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