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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 18:34:06
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
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
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
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
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 .
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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