Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:47:27

Orbital Elements for COU936
WDS: COU936 WDS ID/Discoverer
P: 180.500 Orbital period (years)
a: 0.565 Semi-major axis (arcseconds)
i: 108.6 Inclination (degrees)
Ω: 45.0 Longitude of ascending node (degrees)
T: 1945.300 Epoch of periastron passage (year)
e: 0.738 Eccentricity
ω: 8.4 Longitude of periastron (degrees)
Start-Year: 1935.0 Year
End-Year: 2115.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU936
Position: 092900.67+191718.6 Epoch-2000 right ascension and declination
WDS-ID: 09290+1917 WDS designation
Discoverer Code: COU936 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 81899 HD catalog number
Hipparcos number: 46501 Hipparcos catalog number
V1: 8.42 Magnitude of the primary
V2: 9.96 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for COU936



WDS 6th Orbit including measures of COU936

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of COU936
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.971    223.8
-------------------------
1935.0     0.114    160.2
1936.0     0.100    148.1
1937.0     0.091    133.0
1938.0     0.089    115.8
1939.0     0.093     99.1
1940.0     0.103     84.7
1941.0     0.116     73.3
1942.0     0.130     64.2
1943.0     0.142     56.8
1944.0     0.148     50.4
1945.0     0.148     44.2
1946.0     0.140     37.7
1947.0     0.125     29.9
1948.0     0.106     19.6
1949.0     0.087      4.7
1950.0     0.075    343.4
1951.0     0.073    317.6
1952.0     0.085    295.1
1953.0     0.104    279.4
1954.0     0.128    269.1
1955.0     0.153    262.1
1956.0     0.179    257.2
1957.0     0.205    253.5
1958.0     0.231    250.6
1959.0     0.256    248.3
1960.0     0.281    246.3
1961.0     0.305    244.7
1962.0     0.328    243.4
1963.0     0.351    242.2
1964.0     0.373    241.1
1965.0     0.394    240.2
1966.0     0.415    239.4
1967.0     0.436    238.6
1968.0     0.455    237.9
1969.0     0.475    237.3
1970.0     0.493    236.7
1971.0     0.512    236.2
1972.0     0.529    235.7
1973.0     0.546    235.2
1974.0     0.563    234.7
1975.0     0.579    234.3
1976.0     0.595    233.9
1977.0     0.611    233.5
1978.0     0.625    233.2
1979.0     0.640    232.8
1980.0     0.654    232.5
1981.0     0.668    232.2
1982.0     0.681    231.9
1983.0     0.694    231.6
1984.0     0.707    231.3
1985.0     0.719    231.1
1986.0     0.731    230.8
1987.0     0.742    230.6
1988.0     0.754    230.3
1989.0     0.765    230.1
1990.0     0.775    229.8
1991.0     0.785    229.6
1992.0     0.795    229.4
1993.0     0.805    229.2
1994.0     0.814    229.0
1995.0     0.823    228.8
1996.0     0.832    228.6
1997.0     0.840    228.4
1998.0     0.848    228.2
1999.0     0.856    228.0
2000.0     0.864    227.8
2001.0     0.871    227.6
2002.0     0.878    227.4
2003.0     0.885    227.3
2004.0     0.891    227.1
2005.0     0.898    226.9
2006.0     0.904    226.8
2007.0     0.909    226.6
2008.0     0.915    226.4
2009.0     0.920    226.3
2010.0     0.925    226.1
2011.0     0.930    225.9
2012.0     0.934    225.8
2013.0     0.938    225.6
2014.0     0.942    225.5
2015.0     0.946    225.3
2016.0     0.950    225.2
2017.0     0.953    225.0
2018.0     0.956    224.9
2019.0     0.959    224.7
2020.0     0.961    224.6
2021.0     0.964    224.4
2022.0     0.966    224.3
2023.0     0.968    224.1
2024.0     0.969    224.0
2025.0     0.971    223.8
2026.0     0.972    223.7
2027.0     0.973    223.5
2028.0     0.974    223.4
2029.0     0.974    223.2
2030.0     0.975    223.1
2031.0     0.975    223.0
2032.0     0.975    222.8
2033.0     0.974    222.7
2034.0     0.974    222.5
2035.0     0.973    222.4
2036.0     0.972    222.2
2037.0     0.971    222.1
2038.0     0.969    221.9
2039.0     0.968    221.8
2040.0     0.966    221.7
2041.0     0.964    221.5
2042.0     0.962    221.4
2043.0     0.959    221.2
2044.0     0.956    221.1
2045.0     0.953    220.9
2046.0     0.950    220.8
2047.0     0.947    220.6
2048.0     0.943    220.5
2049.0     0.939    220.3
2050.0     0.935    220.1
2051.0     0.931    220.0
2052.0     0.927    219.8
2053.0     0.922    219.7
2054.0     0.917    219.5
2055.0     0.912    219.3
2056.0     0.906    219.2
2057.0     0.901    219.0
2058.0     0.895    218.8
2059.0     0.889    218.7
2060.0     0.883    218.5
2061.0     0.876    218.3
2062.0     0.869    218.1
2063.0     0.862    218.0
2064.0     0.855    217.8
2065.0     0.848    217.6
2066.0     0.840    217.4
2067.0     0.832    217.2
2068.0     0.824    217.0
2069.0     0.815    216.8
2070.0     0.807    216.6
2071.0     0.798    216.4
2072.0     0.789    216.1
2073.0     0.779    215.9
2074.0     0.769    215.7
2075.0     0.760    215.5
2076.0     0.749    215.2
2077.0     0.739    215.0
2078.0     0.728    214.7
2079.0     0.717    214.5
2080.0     0.706    214.2
2081.0     0.694    213.9
2082.0     0.683    213.6
2083.0     0.670    213.3
2084.0     0.658    213.0
2085.0     0.645    212.7
2086.0     0.632    212.3
2087.0     0.619    212.0
2088.0     0.606    211.6
2089.0     0.592    211.2
2090.0     0.577    210.8
2091.0     0.563    210.4
2092.0     0.548    210.0
2093.0     0.533    209.5
2094.0     0.517    209.0
2095.0     0.502    208.5
2096.0     0.485    207.9
2097.0     0.469    207.3
2098.0     0.452    206.7
2099.0     0.435    206.0
2100.0     0.417    205.2
2101.0     0.399    204.4
2102.0     0.381    203.5
2103.0     0.362    202.5
2104.0     0.343    201.4
2105.0     0.324    200.2
2106.0     0.304    198.8
2107.0     0.284    197.2
2108.0     0.264    195.4
2109.0     0.243    193.2
2110.0     0.222    190.7
2111.0     0.201    187.6
2112.0     0.181    183.9
2113.0     0.160    179.1
2114.0     0.141    173.1






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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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