Double Star Calculator - Orbit

Orbital Elements for COU1667

WDS:	COU1667	WDS ID/Discoverer
P:	223.200	Orbital period (years)
a:	0.218	Semi-major axis (arcseconds)
i:	124.2	Inclination (degrees)
Ω:	58.5	Longitude of ascending node (degrees)
T:	2009.800	Epoch of periastron passage (year)
e:	0.596	Eccentricity
ω:	77.2	Longitude of periastron (degrees)
Start-Year:	1913.4	Year
End-Year:	2136.6	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU1667
Position:	021043.10+442618.2	Epoch-2000 right ascension and declination
WDS-ID:	02107+4426	WDS designation
Discoverer Code:	COU1667	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.2	Magnitude of the primary
V2:	9.2	Magnitude of the secondary
Equinox:		Equinox
Date:		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:	BAE2021	Reference

Double Star Orbit for COU1667

WDS 6th Orbit including measures of COU1667

-- 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 COU1667

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.141   244.75
--------------------------
1913.40    0.195   157.35
1914.40    0.194   156.43
1915.40    0.193   155.51
1916.40    0.193   154.58
1917.40    0.192   153.64
1918.40    0.191   152.70
1919.40    0.191   151.75
1920.40    0.190   150.79
1921.40    0.189   149.83
1922.40    0.189   148.87
1923.40    0.188   147.89
1924.40    0.188   146.92
1925.40    0.187   145.93
1926.40    0.187   144.94
1927.40    0.186   143.95
1928.40    0.186   142.94
1929.40    0.185   141.94
1930.40    0.185   140.93
1931.40    0.184   139.91
1932.40    0.184   138.89
1933.40    0.183   137.86
1934.40    0.183   136.83
1935.40    0.183   135.80
1936.40    0.182   134.76
1937.40    0.182   133.71
1938.40    0.181   132.67
1939.40    0.181   131.61
1940.40    0.181   130.56
1941.40    0.181   129.50
1942.40    0.180   128.43
1943.40    0.180   127.37
1944.40    0.180   126.30
1945.40    0.179   125.22
1946.40    0.179   124.14
1947.40    0.179   123.06
1948.40    0.179   121.98
1949.40    0.178   120.89
1950.40    0.178   119.81
1951.40    0.178   118.71
1952.40    0.178   117.62
1953.40    0.177   116.52
1954.40    0.177   115.42
1955.40    0.177   114.32
1956.40    0.177   113.21
1957.40    0.177   112.10
1958.40    0.176   110.99
1959.40    0.176   109.88
1960.40    0.176   108.76
1961.40    0.176   107.64
1962.40    0.175   106.52
1963.40    0.175   105.39
1964.40    0.175   104.26
1965.40    0.174   103.12
1966.40    0.174   101.98
1967.40    0.174   100.84
1968.40    0.173    99.69
1969.40    0.173    98.54
1970.40    0.172    97.38
1971.40    0.172    96.21
1972.40    0.171    95.04
1973.40    0.171    93.86
1974.40    0.170    92.67
1975.40    0.170    91.47
1976.40    0.169    90.26
1977.40    0.168    89.04
1978.40    0.167    87.80
1979.40    0.166    86.56
1980.40    0.165    85.30
1981.40    0.164    84.02
1982.40    0.163    82.72
1983.40    0.161    81.40
1984.40    0.160    80.06
1985.40    0.158    78.69
1986.40    0.156    77.29
1987.40    0.155    75.86
1988.40    0.152    74.39
1989.40    0.150    72.88
1990.40    0.148    71.32
1991.40    0.145    69.71
1992.40    0.142    68.03
1993.40    0.139    66.29
1994.40    0.136    64.45
1995.40    0.132    62.53
1996.40    0.128    60.48
1997.40    0.124    58.30
1998.40    0.119    55.95
1999.40    0.114    53.41
2000.40    0.109    50.62
2001.40    0.103    47.54
2002.40    0.097    44.07
2003.40    0.090    40.13
2004.40    0.084    35.57
2005.40    0.077    30.21
2006.40    0.070    23.81
2007.40    0.064    16.07
2008.40    0.058     6.70
2009.40    0.053   355.49
2010.40    0.051   342.61
2011.40    0.050   328.82
2012.40    0.052   315.30
2013.40    0.055   303.11
2014.40    0.061   292.75
2015.40    0.067   284.21
2016.40    0.074   277.20
2017.40    0.081   271.43
2018.40    0.089   266.62
2019.40    0.096   262.54
2020.40    0.103   259.04
2021.40    0.110   255.98
2022.40    0.117   253.29
2023.40    0.123   250.88
2024.40    0.129   248.71
2025.40    0.135   246.73
2026.40    0.141   244.92
2027.40    0.146   243.24
2028.40    0.151   241.68
2029.40    0.156   240.21
2030.40    0.161   238.84
2031.40    0.165   237.54
2032.40    0.169   236.30
2033.40    0.173   235.12
2034.40    0.177   233.99
2035.40    0.181   232.91
2036.40    0.184   231.87
2037.40    0.187   230.87
2038.40    0.190   229.90
2039.40    0.193   228.96
2040.40    0.196   228.04
2041.40    0.198   227.15
2042.40    0.201   226.29
2043.40    0.203   225.44
2044.40    0.205   224.61
2045.40    0.208   223.80
2046.40    0.209   223.00
2047.40    0.211   222.22
2048.40    0.213   221.45
2049.40    0.215   220.70
2050.40    0.216   219.95
2051.40    0.218   219.22
2052.40    0.219   218.49
2053.40    0.220   217.77
2054.40    0.221   217.07
2055.40    0.223   216.36
2056.40    0.224   215.67
2057.40    0.225   214.98
2058.40    0.225   214.30
2059.40    0.226   213.62
2060.40    0.227   212.94
2061.40    0.228   212.27
2062.40    0.228   211.61
2063.40    0.229   210.95
2064.40    0.229   210.29
2065.40    0.230   209.63
2066.40    0.230   208.98
2067.40    0.230   208.32
2068.40    0.231   207.67
2069.40    0.231   207.02
2070.40    0.231   206.38
2071.40    0.231   205.73
2072.40    0.231   205.08
2073.40    0.231   204.44
2074.40    0.231   203.79
2075.40    0.231   203.15
2076.40    0.231   202.50
2077.40    0.231   201.85
2078.40    0.231   201.21
2079.40    0.231   200.56
2080.40    0.231   199.91
2081.40    0.230   199.26
2082.40    0.230   198.61
2083.40    0.230   197.95
2084.40    0.230   197.30
2085.40    0.229   196.64
2086.40    0.229   195.98
2087.40    0.228   195.32
2088.40    0.228   194.65
2089.40    0.228   193.99
2090.40    0.227   193.32
2091.40    0.227   192.65
2092.40    0.226   191.97
2093.40    0.226   191.29
2094.40    0.225   190.61
2095.40    0.224   189.93
2096.40    0.224   189.24
2097.40    0.223   188.54
2098.40    0.223   187.85
2099.40    0.222   187.15
2100.40    0.221   186.44
2101.40    0.221   185.73
2102.40    0.220   185.02
2103.40    0.219   184.30
2104.40    0.219   183.58
2105.40    0.218   182.85
2106.40    0.217   182.12
2107.40    0.216   181.39
2108.40    0.216   180.64
2109.40    0.215   179.90
2110.40    0.214   179.15
2111.40    0.213   178.39
2112.40    0.213   177.63
2113.40    0.212   176.86
2114.40    0.211   176.09
2115.40    0.210   175.31
2116.40    0.210   174.52
2117.40    0.209   173.73
2118.40    0.208   172.93
2119.40    0.207   172.13
2120.40    0.206   171.32
2121.40    0.206   170.51
2122.40    0.205   169.69
2123.40    0.204   168.86
2124.40    0.203   168.03
2125.40    0.203   167.19
2126.40    0.202   166.34
2127.40    0.201   165.49
2128.40    0.200   164.63
2129.40    0.200   163.77
2130.40    0.199   162.90
2131.40    0.198   162.02
2132.40    0.197   161.13
2133.40    0.197   160.24
2134.40    0.196   159.35
2135.40    0.195   158.44
2136.40    0.195   157.53

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 14:57:27