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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:00:59

Orbital Elements for COU567
WDS: COU567 WDS ID/Discoverer
P: 135.400 Orbital period (years)
a: 0.187 Semi-major axis (arcseconds)
i: 109.8 Inclination (degrees)
Ω: 5.3 Longitude of ascending node (degrees)
T: 2002.000 Epoch of periastron passage (year)
e: 0.84 Eccentricity
ω: 108.7 Longitude of periastron (degrees)
Start-Year: 1958.0 Year
End-Year: 2092.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU567
Position: 042948.12+174039.4 Epoch-2000 right ascension and declination
WDS-ID: 04298+1741 WDS designation
Discoverer Code: COU567 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 28436 HD catalog number
Hipparcos number: 20971 Hipparcos catalog number
V1: 9.37 Magnitude of the primary
V2: 8.09 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for COU567



WDS 6th Orbit including measures of COU567

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


Ephemeris of COU567
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.082    112.1
-------------------------
1958.0     0.181     36.3
1959.0     0.181     35.8
1960.0     0.181     35.3
1961.0     0.182     34.7
1962.0     0.182     34.2
1963.0     0.182     33.7
1964.0     0.182     33.2
1965.0     0.182     32.7
1966.0     0.182     32.2
1967.0     0.181     31.6
1968.0     0.181     31.1
1969.0     0.181     30.6
1970.0     0.180     30.1
1971.0     0.179     29.5
1972.0     0.179     29.0
1973.0     0.178     28.5
1974.0     0.177     27.9
1975.0     0.176     27.4
1976.0     0.175     26.8
1977.0     0.173     26.3
1978.0     0.172     25.7
1979.0     0.170     25.1
1980.0     0.168     24.5
1981.0     0.166     23.9
1982.0     0.164     23.3
1983.0     0.161     22.6
1984.0     0.159     21.9
1985.0     0.156     21.3
1986.0     0.153     20.5
1987.0     0.149     19.8
1988.0     0.145     19.0
1989.0     0.141     18.2
1990.0     0.136     17.3
1991.0     0.131     16.3
1992.0     0.126     15.3
1993.0     0.120     14.2
1994.0     0.113     12.9
1995.0     0.105     11.5
1996.0     0.096      9.8
1997.0     0.086      7.7
1998.0     0.074      5.1
1999.0     0.060      1.3
2000.0     0.043    354.7
2001.0     0.021    336.0
2002.0     0.014    230.3
2003.0     0.034    192.9
2004.0     0.047    182.4
2005.0     0.056    176.1
2006.0     0.061    171.1
2007.0     0.065    166.9
2008.0     0.068    163.0
2009.0     0.070    159.4
2010.0     0.071    156.0
2011.0     0.072    152.7
2012.0     0.073    149.5
2013.0     0.074    146.3
2014.0     0.075    143.2
2015.0     0.075    140.1
2016.0     0.076    137.1
2017.0     0.076    134.2
2018.0     0.077    131.2
2019.0     0.077    128.4
2020.0     0.078    125.5
2021.0     0.079    122.7
2022.0     0.079    120.0
2023.0     0.080    117.3
2024.0     0.081    114.7
2025.0     0.082    112.1
2026.0     0.083    109.6
2027.0     0.084    107.2
2028.0     0.085    104.8
2029.0     0.087    102.5
2030.0     0.088    100.3
2031.0     0.089     98.1
2032.0     0.091     96.0
2033.0     0.092     94.0
2034.0     0.094     92.0
2035.0     0.095     90.1
2036.0     0.097     88.2
2037.0     0.099     86.4
2038.0     0.100     84.7
2039.0     0.102     83.0
2040.0     0.104     81.4
2041.0     0.105     79.9
2042.0     0.107     78.3
2043.0     0.109     76.9
2044.0     0.111     75.5
2045.0     0.113     74.1
2046.0     0.115     72.8
2047.0     0.116     71.5
2048.0     0.118     70.2
2049.0     0.120     69.0
2050.0     0.122     67.9
2051.0     0.124     66.7
2052.0     0.126     65.6
2053.0     0.127     64.6
2054.0     0.129     63.5
2055.0     0.131     62.5
2056.0     0.133     61.6
2057.0     0.135     60.6
2058.0     0.137     59.7
2059.0     0.138     58.8
2060.0     0.140     57.9
2061.0     0.142     57.0
2062.0     0.144     56.2
2063.0     0.145     55.4
2064.0     0.147     54.6
2065.0     0.149     53.8
2066.0     0.150     53.0
2067.0     0.152     52.3
2068.0     0.153     51.5
2069.0     0.155     50.8
2070.0     0.157     50.1
2071.0     0.158     49.4
2072.0     0.159     48.7
2073.0     0.161     48.1
2074.0     0.162     47.4
2075.0     0.164     46.8
2076.0     0.165     46.1
2077.0     0.166     45.5
2078.0     0.167     44.9
2079.0     0.169     44.3
2080.0     0.170     43.7
2081.0     0.171     43.1
2082.0     0.172     42.5
2083.0     0.173     42.0
2084.0     0.174     41.4
2085.0     0.175     40.8
2086.0     0.176     40.3
2087.0     0.177     39.7
2088.0     0.177     39.2
2089.0     0.178     38.6
2090.0     0.179     38.1
2091.0     0.179     37.6






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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