Double Star Calculator - Orbit

Orbital Elements for COU798
WDS: COU798 WDS ID/Discoverer
P: 154.700 Orbital period (years)
a: 0.259 Semi-major axis (arcseconds)
i: 66.7 Inclination (degrees)
Ω: 46.1 Longitude of ascending node (degrees)
T: 1983.370 Epoch of periastron passage (year)
e: 0.357 Eccentricity
ω: 24.7 Longitude of periastron (degrees)
Start-Year: 1947.65 Year
End-Year: 2102.35 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for COU798
Position: 153440.64+265442.8 Epoch-2000 right ascension and declination
WDS-ID: 15347+2655 WDS designation
Discoverer Code: COU798 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.5 Magnitude of the primary
V2: 9.8 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2007 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Doc2010h Reference

Double Star Orbit for COU798



WDS 6th Orbit including measures of COU798

-- 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 COU798
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.288   217.93
--------------------------
1947.65    0.116   296.68
1948.65    0.113   301.09
1949.65    0.109   305.78
1950.65    0.107   310.71
1951.65    0.105   315.84
1952.65    0.104   321.12
1953.65    0.104   326.48
1954.65    0.104   331.84
1955.65    0.105   337.12
1956.65    0.107   342.27
1957.65    0.109   347.22
1958.65    0.112   351.94
1959.65    0.116   356.39
1960.65    0.119     0.58
1961.65    0.124     4.49
1962.65    0.128     8.14
1963.65    0.132    11.55
1964.65    0.137    14.73
1965.65    0.142    17.70
1966.65    0.146    20.49
1967.65    0.151    23.11
1968.65    0.155    25.59
1969.65    0.159    27.94
1970.65    0.162    30.18
1971.65    0.165    32.33
1972.65    0.168    34.41
1973.65    0.170    36.43
1974.65    0.171    38.41
1975.65    0.172    40.36
1976.65    0.172    42.30
1977.65    0.172    44.24
1978.65    0.171    46.21
1979.65    0.168    48.22
1980.65    0.166    50.28
1981.65    0.162    52.43
1982.65    0.157    54.70
1983.65    0.152    57.10
1984.65    0.146    59.68
1985.65    0.140    62.49
1986.65    0.133    65.58
1987.65    0.126    69.02
1988.65    0.119    72.88
1989.65    0.111    77.26
1990.65    0.104    82.28
1991.65    0.097    88.05
1992.65    0.090    94.68
1993.65    0.085   102.24
1994.65    0.081   110.70
1995.65    0.078   119.91
1996.65    0.077   129.52
1997.65    0.078   139.09
1998.65    0.081   148.18
1999.65    0.086   156.49
2000.65    0.092   163.85
2001.65    0.098   170.26
2002.65    0.106   175.79
2003.65    0.114   180.55
2004.65    0.123   184.67
2005.65    0.132   188.23
2006.65    0.141   191.35
2007.65    0.150   194.09
2008.65    0.159   196.52
2009.65    0.167   198.69
2010.65    0.176   200.65
2011.65    0.185   202.42
2012.65    0.193   204.03
2013.65    0.202   205.51
2014.65    0.210   206.87
2015.65    0.218   208.13
2016.65    0.225   209.31
2017.65    0.233   210.40
2018.65    0.240   211.44
2019.65    0.247   212.41
2020.65    0.254   213.33
2021.65    0.260   214.20
2022.65    0.266   215.04
2023.65    0.272   215.83
2024.65    0.278   216.60
2025.65    0.283   217.33
2026.65    0.288   218.03
2027.65    0.293   218.72
2028.65    0.298   219.38
2029.65    0.302   220.02
2030.65    0.307   220.64
2031.65    0.310   221.24
2032.65    0.314   221.83
2033.65    0.318   222.41
2034.65    0.321   222.98
2035.65    0.324   223.53
2036.65    0.326   224.08
2037.65    0.329   224.62
2038.65    0.331   225.15
2039.65    0.333   225.67
2040.65    0.335   226.19
2041.65    0.336   226.70
2042.65    0.338   227.21
2043.65    0.339   227.71
2044.65    0.340   228.22
2045.65    0.340   228.71
2046.65    0.341   229.21
2047.65    0.341   229.71
2048.65    0.341   230.21
2049.65    0.341   230.70
2050.65    0.340   231.20
2051.65    0.339   231.70
2052.65    0.339   232.20
2053.65    0.338   232.71
2054.65    0.336   233.21
2055.65    0.335   233.73
2056.65    0.333   234.24
2057.65    0.331   234.77
2058.65    0.329   235.29
2059.65    0.327   235.83
2060.65    0.325   236.37
2061.65    0.322   236.92
2062.65    0.319   237.48
2063.65    0.316   238.06
2064.65    0.313   238.64
2065.65    0.310   239.23
2066.65    0.306   239.84
2067.65    0.303   240.46
2068.65    0.299   241.10
2069.65    0.295   241.75
2070.65    0.291   242.42
2071.65    0.287   243.11
2072.65    0.282   243.83
2073.65    0.278   244.56
2074.65    0.273   245.32
2075.65    0.268   246.11
2076.65    0.263   246.93
2077.65    0.258   247.78
2078.65    0.252   248.67
2079.65    0.247   249.59
2080.65    0.241   250.56
2081.65    0.236   251.57
2082.65    0.230   252.64
2083.65    0.224   253.76
2084.65    0.218   254.93
2085.65    0.212   256.18
2086.65    0.206   257.50
2087.65    0.200   258.89
2088.65    0.194   260.38
2089.65    0.188   261.97
2090.65    0.181   263.66
2091.65    0.175   265.48
2092.65    0.169   267.43
2093.65    0.163   269.53
2094.65    0.157   271.79
2095.65    0.151   274.24
2096.65    0.145   276.88
2097.65    0.139   279.75
2098.65    0.134   282.85
2099.65    0.128   286.21
2100.65    0.124   289.85
2101.65    0.119   293.77






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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 17:16:52



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