Double Star Calculator - Orbit

Orbital Elements for COU1642
WDS: COU1642 WDS ID/Discoverer
P: 433.800 Orbital period (years)
a: 0.247 Semi-major axis (arcseconds)
i: 59.3 Inclination (degrees)
Ω: 101.3 Longitude of ascending node (degrees)
T: 2026.000 Epoch of periastron passage (year)
e: 0.277 Eccentricity
ω: 11.9 Longitude of periastron (degrees)
Start-Year: 1808.1 Year
End-Year: 2241.9 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for COU1642
Position: 222647.41+403329.6 Epoch-2000 right ascension and declination
WDS-ID: 22268+4033 WDS designation
Discoverer Code: COU1642 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 212900 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 8.5 Magnitude of the primary
V2: 8.5 Magnitude of the secondary
Equinox: Equinox
Date: 2011 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 COU1642



WDS 6th Orbit including measures of COU1642

-- 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 COU1642
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.175   107.84
--------------------------
1808.10    0.311   287.18
1809.10    0.310   287.44
1810.10    0.310   287.70
1811.10    0.310   287.96
1812.10    0.309   288.22
1813.10    0.309   288.48
1814.10    0.308   288.74
1815.10    0.308   289.00
1816.10    0.307   289.26
1817.10    0.306   289.53
1818.10    0.306   289.79
1819.10    0.305   290.06
1820.10    0.304   290.33
1821.10    0.304   290.60
1822.10    0.303   290.87
1823.10    0.302   291.14
1824.10    0.302   291.41
1825.10    0.301   291.68
1826.10    0.300   291.96
1827.10    0.299   292.24
1828.10    0.298   292.51
1829.10    0.297   292.79
1830.10    0.296   293.08
1831.10    0.296   293.36
1832.10    0.295   293.64
1833.10    0.294   293.93
1834.10    0.293   294.22
1835.10    0.292   294.51
1836.10    0.291   294.80
1837.10    0.289   295.10
1838.10    0.288   295.40
1839.10    0.287   295.70
1840.10    0.286   296.00
1841.10    0.285   296.30
1842.10    0.284   296.61
1843.10    0.283   296.92
1844.10    0.281   297.23
1845.10    0.280   297.55
1846.10    0.279   297.87
1847.10    0.278   298.19
1848.10    0.276   298.51
1849.10    0.275   298.84
1850.10    0.274   299.17
1851.10    0.272   299.50
1852.10    0.271   299.84
1853.10    0.270   300.18
1854.10    0.268   300.52
1855.10    0.267   300.87
1856.10    0.265   301.22
1857.10    0.264   301.57
1858.10    0.262   301.93
1859.10    0.261   302.30
1860.10    0.259   302.67
1861.10    0.258   303.04
1862.10    0.256   303.41
1863.10    0.254   303.80
1864.10    0.253   304.18
1865.10    0.251   304.57
1866.10    0.250   304.97
1867.10    0.248   305.37
1868.10    0.246   305.78
1869.10    0.244   306.19
1870.10    0.243   306.61
1871.10    0.241   307.03
1872.10    0.239   307.46
1873.10    0.238   307.90
1874.10    0.236   308.34
1875.10    0.234   308.79
1876.10    0.232   309.25
1877.10    0.230   309.72
1878.10    0.229   310.19
1879.10    0.227   310.67
1880.10    0.225   311.15
1881.10    0.223   311.65
1882.10    0.221   312.15
1883.10    0.219   312.67
1884.10    0.217   313.19
1885.10    0.215   313.72
1886.10    0.214   314.26
1887.10    0.212   314.81
1888.10    0.210   315.37
1889.10    0.208   315.94
1890.10    0.206   316.52
1891.10    0.204   317.11
1892.10    0.202   317.71
1893.10    0.200   318.33
1894.10    0.198   318.96
1895.10    0.196   319.60
1896.10    0.194   320.25
1897.10    0.192   320.92
1898.10    0.190   321.60
1899.10    0.188   322.29
1900.10    0.186   323.00
1901.10    0.184   323.72
1902.10    0.182   324.46
1903.10    0.180   325.22
1904.10    0.178   325.99
1905.10    0.176   326.78
1906.10    0.174   327.59
1907.10    0.173   328.41
1908.10    0.171   329.26
1909.10    0.169   330.12
1910.10    0.167   331.00
1911.10    0.165   331.91
1912.10    0.163   332.83
1913.10    0.161   333.78
1914.10    0.159   334.74
1915.10    0.158   335.73
1916.10    0.156   336.74
1917.10    0.154   337.78
1918.10    0.152   338.84
1919.10    0.151   339.92
1920.10    0.149   341.03
1921.10    0.147   342.16
1922.10    0.146   343.32
1923.10    0.144   344.51
1924.10    0.142   345.72
1925.10    0.141   346.95
1926.10    0.139   348.22
1927.10    0.138   349.51
1928.10    0.137   350.82
1929.10    0.135   352.17
1930.10    0.134   353.53
1931.10    0.133   354.93
1932.10    0.132   356.35
1933.10    0.131   357.79
1934.10    0.129   359.26
1935.10    0.128     0.76
1936.10    0.128     2.27
1937.10    0.127     3.81
1938.10    0.126     5.37
1939.10    0.125     6.94
1940.10    0.124     8.54
1941.10    0.124    10.15
1942.10    0.123    11.77
1943.10    0.123    13.41
1944.10    0.122    15.06
1945.10    0.122    16.72
1946.10    0.122    18.39
1947.10    0.122    20.06
1948.10    0.122    21.74
1949.10    0.122    23.42
1950.10    0.122    25.09
1951.10    0.122    26.77
1952.10    0.122    28.44
1953.10    0.122    30.10
1954.10    0.123    31.75
1955.10    0.123    33.40
1956.10    0.124    35.03
1957.10    0.124    36.64
1958.10    0.125    38.25
1959.10    0.126    39.83
1960.10    0.126    41.40
1961.10    0.127    42.95
1962.10    0.128    44.48
1963.10    0.129    45.98
1964.10    0.130    47.47
1965.10    0.131    48.93
1966.10    0.132    50.38
1967.10    0.133    51.79
1968.10    0.134    53.19
1969.10    0.135    54.56
1970.10    0.136    55.91
1971.10    0.138    57.23
1972.10    0.139    58.53
1973.10    0.140    59.80
1974.10    0.141    61.06
1975.10    0.143    62.29
1976.10    0.144    63.50
1977.10    0.145    64.68
1978.10    0.147    65.84
1979.10    0.148    66.99
1980.10    0.149    68.11
1981.10    0.151    69.21
1982.10    0.152    70.29
1983.10    0.154    71.36
1984.10    0.155    72.40
1985.10    0.156    73.43
1986.10    0.158    74.44
1987.10    0.159    75.43
1988.10    0.160    76.41
1989.10    0.161    77.37
1990.10    0.163    78.32
1991.10    0.164    79.25
1992.10    0.165    80.17
1993.10    0.166    81.07
1994.10    0.167    81.97
1995.10    0.168    82.85
1996.10    0.169    83.72
1997.10    0.170    84.58
1998.10    0.171    85.43
1999.10    0.172    86.28
2000.10    0.173    87.11
2001.10    0.174    87.93
2002.10    0.175    88.75
2003.10    0.175    89.56
2004.10    0.176    90.36
2005.10    0.177    91.16
2006.10    0.177    91.95
2007.10    0.178    92.74
2008.10    0.178    93.52
2009.10    0.179    94.30
2010.10    0.179    95.08
2011.10    0.179    95.85
2012.10    0.180    96.63
2013.10    0.180    97.40
2014.10    0.180    98.16
2015.10    0.180    98.93
2016.10    0.180    99.70
2017.10    0.180   100.47
2018.10    0.179   101.24
2019.10    0.179   102.01
2020.10    0.179   102.79
2021.10    0.179   103.57
2022.10    0.178   104.35
2023.10    0.178   105.13
2024.10    0.177   105.92
2025.10    0.176   106.72
2026.10    0.176   107.52
2027.10    0.175   108.33
2028.10    0.174   109.14
2029.10    0.173   109.97
2030.10    0.172   110.80
2031.10    0.171   111.64
2032.10    0.170   112.49
2033.10    0.169   113.36
2034.10    0.168   114.23
2035.10    0.167   115.12
2036.10    0.165   116.02
2037.10    0.164   116.93
2038.10    0.163   117.86
2039.10    0.161   118.81
2040.10    0.160   119.77
2041.10    0.158   120.75
2042.10    0.157   121.75
2043.10    0.155   122.77
2044.10    0.154   123.81
2045.10    0.152   124.87
2046.10    0.151   125.95
2047.10    0.149   127.06
2048.10    0.147   128.20
2049.10    0.145   129.36
2050.10    0.144   130.54
2051.10    0.142   131.76
2052.10    0.140   133.01
2053.10    0.139   134.28
2054.10    0.137   135.59
2055.10    0.135   136.93
2056.10    0.134   138.31
2057.10    0.132   139.72
2058.10    0.130   141.16
2059.10    0.129   142.65
2060.10    0.127   144.17
2061.10    0.125   145.73
2062.10    0.124   147.33
2063.10    0.122   148.96
2064.10    0.121   150.64
2065.10    0.120   152.35
2066.10    0.118   154.10
2067.10    0.117   155.90
2068.10    0.116   157.72
2069.10    0.115   159.59
2070.10    0.114   161.49
2071.10    0.113   163.42
2072.10    0.112   165.38
2073.10    0.111   167.37
2074.10    0.111   169.38
2075.10    0.110   171.42
2076.10    0.110   173.48
2077.10    0.109   175.55
2078.10    0.109   177.63
2079.10    0.109   179.72
2080.10    0.109   181.82
2081.10    0.109   183.91
2082.10    0.109   186.00
2083.10    0.109   188.08
2084.10    0.110   190.14
2085.10    0.110   192.19
2086.10    0.111   194.22
2087.10    0.112   196.22
2088.10    0.113   198.20
2089.10    0.113   200.14
2090.10    0.114   202.06
2091.10    0.116   203.94
2092.10    0.117   205.78
2093.10    0.118   207.58
2094.10    0.119   209.34
2095.10    0.121   211.07
2096.10    0.122   212.75
2097.10    0.124   214.39
2098.10    0.126   215.98
2099.10    0.127   217.54
2100.10    0.129   219.05
2101.10    0.131   220.52
2102.10    0.133   221.95
2103.10    0.135   223.34
2104.10    0.137   224.69
2105.10    0.139   226.01
2106.10    0.141   227.28
2107.10    0.143   228.52
2108.10    0.145   229.72
2109.10    0.147   230.89
2110.10    0.149   232.02
2111.10    0.151   233.12
2112.10    0.153   234.19
2113.10    0.156   235.23
2114.10    0.158   236.24
2115.10    0.160   237.22
2116.10    0.162   238.18
2117.10    0.165   239.11
2118.10    0.167   240.01
2119.10    0.169   240.89
2120.10    0.172   241.74
2121.10    0.174   242.57
2122.10    0.176   243.38
2123.10    0.179   244.17
2124.10    0.181   244.94
2125.10    0.183   245.69
2126.10    0.185   246.42
2127.10    0.188   247.14
2128.10    0.190   247.83
2129.10    0.192   248.51
2130.10    0.195   249.18
2131.10    0.197   249.83
2132.10    0.199   250.46
2133.10    0.201   251.08
2134.10    0.203   251.69
2135.10    0.206   252.28
2136.10    0.208   252.86
2137.10    0.210   253.43
2138.10    0.212   253.99
2139.10    0.214   254.53
2140.10    0.217   255.07
2141.10    0.219   255.59
2142.10    0.221   256.11
2143.10    0.223   256.61
2144.10    0.225   257.11
2145.10    0.227   257.59
2146.10    0.229   258.07
2147.10    0.231   258.54
2148.10    0.233   259.00
2149.10    0.235   259.45
2150.10    0.237   259.90
2151.10    0.239   260.34
2152.10    0.241   260.77
2153.10    0.243   261.19
2154.10    0.245   261.61
2155.10    0.246   262.02
2156.10    0.248   262.43
2157.10    0.250   262.83
2158.10    0.252   263.22
2159.10    0.254   263.61
2160.10    0.255   264.00
2161.10    0.257   264.37
2162.10    0.259   264.75
2163.10    0.260   265.12
2164.10    0.262   265.48
2165.10    0.264   265.84
2166.10    0.265   266.19
2167.10    0.267   266.55
2168.10    0.268   266.89
2169.10    0.270   267.23
2170.10    0.271   267.57
2171.10    0.273   267.91
2172.10    0.274   268.24
2173.10    0.276   268.57
2174.10    0.277   268.89
2175.10    0.279   269.22
2176.10    0.280   269.53
2177.10    0.281   269.85
2178.10    0.282   270.16
2179.10    0.284   270.47
2180.10    0.285   270.78
2181.10    0.286   271.08
2182.10    0.287   271.39
2183.10    0.289   271.69
2184.10    0.290   271.98
2185.10    0.291   272.28
2186.10    0.292   272.57
2187.10    0.293   272.86
2188.10    0.294   273.15
2189.10    0.295   273.43
2190.10    0.296   273.72
2191.10    0.297   274.00
2192.10    0.298   274.28
2193.10    0.299   274.56
2194.10    0.300   274.84
2195.10    0.300   275.12
2196.10    0.301   275.39
2197.10    0.302   275.66
2198.10    0.303   275.93
2199.10    0.304   276.20
2200.10    0.304   276.47
2201.10    0.305   276.74
2202.10    0.306   277.01
2203.10    0.306   277.27
2204.10    0.307   277.54
2205.10    0.308   277.80
2206.10    0.308   278.06
2207.10    0.309   278.32
2208.10    0.309   278.58
2209.10    0.310   278.84
2210.10    0.310   279.10
2211.10    0.310   279.36
2212.10    0.311   279.62
2213.10    0.311   279.87
2214.10    0.312   280.13
2215.10    0.312   280.38
2216.10    0.312   280.64
2217.10    0.312   280.89
2218.10    0.313   281.15
2219.10    0.313   281.40
2220.10    0.313   281.66
2221.10    0.313   281.91
2222.10    0.313   282.16
2223.10    0.314   282.41
2224.10    0.314   282.67
2225.10    0.314   282.92
2226.10    0.314   283.17
2227.10    0.314   283.42
2228.10    0.314   283.68
2229.10    0.314   283.93
2230.10    0.314   284.18
2231.10    0.313   284.43
2232.10    0.313   284.69
2233.10    0.313   284.94
2234.10    0.313   285.19
2235.10    0.313   285.45
2236.10    0.313   285.70
2237.10    0.312   285.96
2238.10    0.312   286.21
2239.10    0.312   286.47
2240.10    0.311   286.72
2241.10    0.311   286.98






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.


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Report created: 2026-06-25 18:40:01



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