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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:34:06

Orbital Elements for COU66
WDS: COU66 WDS ID/Discoverer
P: 143.200 Orbital period (years)
a: 0.727 Semi-major axis (arcseconds)
i: 147.0 Inclination (degrees)
Ω: 12.0 Longitude of ascending node (degrees)
T: 2031.300 Epoch of periastron passage (year)
e: 0.497 Eccentricity
ω: 25.5 Longitude of periastron (degrees)
Start-Year: 1954.0 Year
End-Year: 2096.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU66
Position: 154632.45+195714.4 Epoch-2000 right ascension and declination
WDS-ID: 15465+1957 WDS designation
Discoverer Code: COU66 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 77269 Hipparcos catalog number
V1: 10.94 Magnitude of the primary
V2: 11.20 Magnitude of the secondary
Equinox: Equinox
Date: 2018 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for COU66



WDS 6th Orbit including measures of COU66

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


Ephemeris of COU66
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.404     32.8
-------------------------
1954.0     1.064    175.1
1955.0     1.064    174.2
1956.0     1.064    173.4
1957.0     1.063    172.5
1958.0     1.061    171.7
1959.0     1.059    170.8
1960.0     1.057    169.9
1961.0     1.055    169.1
1962.0     1.052    168.2
1963.0     1.049    167.3
1964.0     1.045    166.4
1965.0     1.041    165.6
1966.0     1.037    164.7
1967.0     1.032    163.8
1968.0     1.027    162.8
1969.0     1.022    161.9
1970.0     1.016    161.0
1971.0     1.010    160.0
1972.0     1.004    159.1
1973.0     0.997    158.1
1974.0     0.990    157.2
1975.0     0.983    156.2
1976.0     0.975    155.2
1977.0     0.967    154.1
1978.0     0.959    153.1
1979.0     0.951    152.0
1980.0     0.942    150.9
1981.0     0.932    149.8
1982.0     0.923    148.7
1983.0     0.913    147.6
1984.0     0.903    146.4
1985.0     0.893    145.2
1986.0     0.882    144.0
1987.0     0.871    142.7
1988.0     0.860    141.4
1989.0     0.848    140.1
1990.0     0.836    138.7
1991.0     0.824    137.3
1992.0     0.812    135.9
1993.0     0.799    134.4
1994.0     0.787    132.9
1995.0     0.774    131.3
1996.0     0.761    129.6
1997.0     0.747    127.9
1998.0     0.734    126.2
1999.0     0.720    124.3
2000.0     0.706    122.4
2001.0     0.692    120.5
2002.0     0.678    118.4
2003.0     0.664    116.2
2004.0     0.650    114.0
2005.0     0.636    111.7
2006.0     0.622    109.2
2007.0     0.608    106.7
2008.0     0.594    104.0
2009.0     0.580    101.2
2010.0     0.566     98.2
2011.0     0.553     95.2
2012.0     0.540     91.9
2013.0     0.527     88.5
2014.0     0.514     84.9
2015.0     0.502     81.2
2016.0     0.490     77.3
2017.0     0.479     73.1
2018.0     0.468     68.8
2019.0     0.457     64.3
2020.0     0.448     59.6
2021.0     0.438     54.7
2022.0     0.429     49.5
2023.0     0.420     44.2
2024.0     0.412     38.6
2025.0     0.404     32.8
2026.0     0.396     26.7
2027.0     0.388     20.4
2028.0     0.380     13.9
2029.0     0.372      7.0
2030.0     0.365    359.9
2031.0     0.357    352.5
2032.0     0.351    344.8
2033.0     0.346    336.8
2034.0     0.343    328.7
2035.0     0.342    320.4
2036.0     0.344    312.2
2037.0     0.348    304.1
2038.0     0.356    296.3
2039.0     0.366    288.8
2040.0     0.379    281.8
2041.0     0.393    275.3
2042.0     0.410    269.3
2043.0     0.428    263.8
2044.0     0.448    258.8
2045.0     0.468    254.2
2046.0     0.489    250.0
2047.0     0.510    246.1
2048.0     0.531    242.5
2049.0     0.553    239.2
2050.0     0.574    236.2
2051.0     0.595    233.3
2052.0     0.616    230.7
2053.0     0.636    228.2
2054.0     0.657    225.9
2055.0     0.676    223.7
2056.0     0.696    221.7
2057.0     0.714    219.7
2058.0     0.733    217.9
2059.0     0.750    216.1
2060.0     0.768    214.5
2061.0     0.784    212.8
2062.0     0.801    211.3
2063.0     0.816    209.8
2064.0     0.831    208.4
2065.0     0.846    207.0
2066.0     0.860    205.7
2067.0     0.874    204.4
2068.0     0.887    203.2
2069.0     0.900    202.0
2070.0     0.912    200.8
2071.0     0.923    199.6
2072.0     0.934    198.5
2073.0     0.945    197.4
2074.0     0.955    196.3
2075.0     0.965    195.3
2076.0     0.974    194.3
2077.0     0.982    193.3
2078.0     0.991    192.3
2079.0     0.998    191.3
2080.0     1.006    190.3
2081.0     1.013    189.4
2082.0     1.019    188.4
2083.0     1.025    187.5
2084.0     1.030    186.6
2085.0     1.036    185.7
2086.0     1.040    184.8
2087.0     1.044    183.9
2088.0     1.048    183.0
2089.0     1.052    182.1
2090.0     1.055    181.3
2091.0     1.057    180.4
2092.0     1.059    179.5
2093.0     1.061    178.7
2094.0     1.063    177.8
2095.0     1.064    177.0






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.


www.stella-vega.de