Double Star Calculator - Orbit

Orbital Elements for COU1003AA,AB
WDS: COU1003AA,AB WDS ID/Discoverer
P: 159.300 Orbital period (years)
a: 0.233 Semi-major axis (arcseconds)
i: 100.4 Inclination (degrees)
Ω: 51.0 Longitude of ascending node (degrees)
T: 1971.200 Epoch of periastron passage (year)
e: 0.178 Eccentricity
ω: 317.0 Longitude of periastron (degrees)
Start-Year: 1945.35 Year
End-Year: 2104.65 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for COU1003AA,AB
Position: 175924.52+292929.6 Epoch-2000 right ascension and declination
WDS-ID: 17594+2929 WDS designation
Discoverer Code: COU1003AA,AB Discover designation and components
ADS number: 10961 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.92 Magnitude of the primary
V2: 9.92 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 COU1003AA,AB



WDS 6th Orbit including measures of COU1003AA,AB

-- 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 COU1003AA,AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.056   288.22
--------------------------
1945.35    0.116   214.09
1946.35    0.107   212.34
1947.35    0.099   210.28
1948.35    0.090   207.82
1949.35    0.081   204.83
1950.35    0.072   201.11
1951.35    0.064   196.41
1952.35    0.056   190.31
1953.35    0.049   182.30
1954.35    0.043   171.73
1955.35    0.038   158.21
1956.35    0.036   142.32
1957.35    0.037   126.05
1958.35    0.041   111.67
1959.35    0.047   100.20
1960.35    0.054    91.45
1961.35    0.061    84.81
1962.35    0.070    79.71
1963.35    0.078    75.71
1964.35    0.087    72.49
1965.35    0.095    69.86
1966.35    0.104    67.66
1967.35    0.112    65.79
1968.35    0.120    64.18
1969.35    0.128    62.77
1970.35    0.136    61.52
1971.35    0.143    60.39
1972.35    0.150    59.38
1973.35    0.157    58.45
1974.35    0.163    57.60
1975.35    0.168    56.80
1976.35    0.174    56.06
1977.35    0.179    55.36
1978.35    0.183    54.69
1979.35    0.187    54.05
1980.35    0.190    53.44
1981.35    0.193    52.85
1982.35    0.196    52.27
1983.35    0.198    51.71
1984.35    0.199    51.16
1985.35    0.200    50.61
1986.35    0.201    50.07
1987.35    0.201    49.53
1988.35    0.201    48.99
1989.35    0.200    48.45
1990.35    0.199    47.90
1991.35    0.197    47.34
1992.35    0.195    46.77
1993.35    0.192    46.19
1994.35    0.190    45.60
1995.35    0.186    44.98
1996.35    0.183    44.34
1997.35    0.179    43.67
1998.35    0.175    42.98
1999.35    0.170    42.24
2000.35    0.165    41.47
2001.35    0.160    40.65
2002.35    0.155    39.77
2003.35    0.150    38.83
2004.35    0.144    37.82
2005.35    0.138    36.72
2006.35    0.132    35.53
2007.35    0.126    34.21
2008.35    0.119    32.76
2009.35    0.113    31.14
2010.35    0.106    29.33
2011.35    0.100    27.28
2012.35    0.093    24.95
2013.35    0.087    22.26
2014.35    0.081    19.15
2015.35    0.074    15.52
2016.35    0.068    11.23
2017.35    0.063     6.17
2018.35    0.058     0.16
2019.35    0.053   353.09
2020.35    0.050   344.90
2021.35    0.048   335.67
2022.35    0.046   325.74
2023.35    0.047   315.63
2024.35    0.048   305.92
2025.35    0.051   297.06
2026.35    0.055   289.29
2027.35    0.060   282.64
2028.35    0.065   277.01
2029.35    0.071   272.27
2030.35    0.077   268.26
2031.35    0.083   264.85
2032.35    0.090   261.92
2033.35    0.096   259.40
2034.35    0.103   257.20
2035.35    0.110   255.27
2036.35    0.116   253.56
2037.35    0.123   252.04
2038.35    0.130   250.67
2039.35    0.136   249.44
2040.35    0.143   248.32
2041.35    0.149   247.29
2042.35    0.155   246.35
2043.35    0.162   245.49
2044.35    0.168   244.68
2045.35    0.174   243.93
2046.35    0.179   243.23
2047.35    0.185   242.58
2048.35    0.191   241.96
2049.35    0.196   241.38
2050.35    0.201   240.82
2051.35    0.206   240.30
2052.35    0.211   239.79
2053.35    0.215   239.31
2054.35    0.220   238.85
2055.35    0.224   238.41
2056.35    0.228   237.99
2057.35    0.232   237.58
2058.35    0.236   237.18
2059.35    0.239   236.79
2060.35    0.242   236.41
2061.35    0.245   236.05
2062.35    0.248   235.69
2063.35    0.250   235.34
2064.35    0.253   234.99
2065.35    0.255   234.65
2066.35    0.256   234.32
2067.35    0.258   233.99
2068.35    0.259   233.67
2069.35    0.260   233.34
2070.35    0.261   233.02
2071.35    0.261   232.70
2072.35    0.262   232.38
2073.35    0.262   232.07
2074.35    0.261   231.75
2075.35    0.261   231.43
2076.35    0.260   231.11
2077.35    0.259   230.78
2078.35    0.257   230.45
2079.35    0.255   230.12
2080.35    0.253   229.78
2081.35    0.251   229.44
2082.35    0.248   229.09
2083.35    0.245   228.73
2084.35    0.242   228.37
2085.35    0.239   227.99
2086.35    0.235   227.60
2087.35    0.231   227.20
2088.35    0.226   226.78
2089.35    0.222   226.35
2090.35    0.217   225.89
2091.35    0.211   225.42
2092.35    0.206   224.92
2093.35    0.200   224.39
2094.35    0.194   223.82
2095.35    0.187   223.22
2096.35    0.181   222.58
2097.35    0.174   221.89
2098.35    0.166   221.13
2099.35    0.159   220.31
2100.35    0.151   219.40
2101.35    0.143   218.40
2102.35    0.135   217.28
2103.35    0.127   216.01
2104.35    0.119   214.56






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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 17:45:48



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