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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 17:41:12
WDS:
BU208AB
WDS ID/Discoverer
P:
127.340
Orbital period (years)
a:
1.665
Semi-major axis (arcseconds)
i:
83.6
Inclination (degrees)
Ω:
31.3
Longitude of ascending node (degrees)
T:
1986.200
Epoch of periastron passage (year)
e:
0.298
Eccentricity
ω:
305.0
Longitude of periastron (degrees)
Start-Year:
1962.0
Year
End-Year:
2088.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
083907.90-223942.8
Epoch-2000 right ascension and declination
WDS-ID:
08391-2240
WDS designation
Discoverer Code:
BU208AB
Discover designation and components
ADS number:
6914
Aitken Double Star catalog
HD number:
73752
HD catalog number
Hipparcos number:
42430
Hipparcos catalog number
V1:
5.37
Magnitude of the primary
V2:
6.81
Magnitude of the secondary
Equinox:
Equinox
Date:
2021
Date of last observation
Orbit grade:
2
Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:
n
Flags
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Click to expand/collapse ephemeris:
Year Sep[“] PA[°]
---------------------------------------------
2025.0 0.340 70.4
-------------------------
1962.0 1.508 213.9
1963.0 1.453 214.3
1964.0 1.394 214.7
1965.0 1.331 215.1
1966.0 1.265 215.6
1967.0 1.194 216.2
1968.0 1.120 216.8
1969.0 1.041 217.5
1970.0 0.959 218.3
1971.0 0.874 219.3
1972.0 0.785 220.6
1973.0 0.694 222.1
1974.0 0.600 224.1
1975.0 0.503 226.9
1976.0 0.407 230.9
1977.0 0.311 237.5
1978.0 0.221 249.7
1979.0 0.152 275.3
1980.0 0.141 317.9
1981.0 0.198 349.2
1982.0 0.284 4.2
1983.0 0.379 11.9
1984.0 0.474 16.6
1985.0 0.569 19.7
1986.0 0.661 21.9
1987.0 0.749 23.6
1988.0 0.832 24.9
1989.0 0.910 26.0
1990.0 0.982 26.9
1991.0 1.047 27.7
1992.0 1.106 28.5
1993.0 1.158 29.1
1994.0 1.203 29.7
1995.0 1.241 30.3
1996.0 1.272 30.8
1997.0 1.296 31.3
1998.0 1.314 31.8
1999.0 1.325 32.3
2000.0 1.330 32.7
2001.0 1.330 33.2
2002.0 1.323 33.7
2003.0 1.312 34.2
2004.0 1.296 34.7
2005.0 1.275 35.2
2006.0 1.250 35.7
2007.0 1.221 36.2
2008.0 1.189 36.8
2009.0 1.153 37.4
2010.0 1.114 38.1
2011.0 1.072 38.8
2012.0 1.028 39.5
2013.0 0.981 40.3
2014.0 0.932 41.3
2015.0 0.882 42.3
2016.0 0.830 43.4
2017.0 0.776 44.7
2018.0 0.721 46.2
2019.0 0.666 47.9
2020.0 0.610 50.0
2021.0 0.554 52.5
2022.0 0.498 55.5
2023.0 0.443 59.2
2024.0 0.390 64.1
2025.0 0.340 70.4
2026.0 0.295 78.7
2027.0 0.258 89.7
2028.0 0.233 103.8
2029.0 0.224 120.0
2030.0 0.233 136.2
2031.0 0.259 150.2
2032.0 0.296 161.2
2033.0 0.341 169.4
2034.0 0.392 175.7
2035.0 0.445 180.5
2036.0 0.501 184.2
2037.0 0.557 187.2
2038.0 0.614 189.6
2039.0 0.671 191.7
2040.0 0.728 193.4
2041.0 0.785 194.8
2042.0 0.841 196.1
2043.0 0.897 197.2
2044.0 0.952 198.2
2045.0 1.006 199.1
2046.0 1.059 199.8
2047.0 1.112 200.5
2048.0 1.163 201.2
2049.0 1.213 201.8
2050.0 1.261 202.3
2051.0 1.309 202.8
2052.0 1.355 203.3
2053.0 1.400 203.7
2054.0 1.443 204.2
2055.0 1.484 204.5
2056.0 1.524 204.9
2057.0 1.563 205.3
2058.0 1.599 205.6
2059.0 1.634 205.9
2060.0 1.667 206.2
2061.0 1.698 206.5
2062.0 1.727 206.8
2063.0 1.754 207.1
2064.0 1.779 207.3
2065.0 1.802 207.6
2066.0 1.823 207.9
2067.0 1.841 208.1
2068.0 1.857 208.3
2069.0 1.871 208.6
2070.0 1.882 208.8
2071.0 1.890 209.1
2072.0 1.896 209.3
2073.0 1.899 209.5
2074.0 1.900 209.8
2075.0 1.897 210.0
2076.0 1.892 210.2
2077.0 1.884 210.4
2078.0 1.873 210.7
2079.0 1.858 210.9
2080.0 1.841 211.2
2081.0 1.820 211.4
2082.0 1.796 211.7
2083.0 1.768 211.9
2084.0 1.737 212.2
2085.0 1.702 212.5
2086.0 1.663 212.8
2087.0 1.621 213.1
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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