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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 17:41:59
WDS:
I10AB
WDS ID/Discoverer
P:
146.970
Orbital period (years)
a:
2.002
Semi-major axis (arcseconds)
i:
105.6
Inclination (degrees)
Ω:
344.7
Longitude of ascending node (degrees)
T:
2000.780
Epoch of periastron passage (year)
e:
0.482
Eccentricity
ω:
8.5
Longitude of periastron (degrees)
Start-Year:
1952.0
Year
End-Year:
2098.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
084442.23-544231.8
Epoch-2000 right ascension and declination
WDS-ID:
08447-5443
WDS designation
Discoverer Code:
I10AB
Discover designation and components
ADS number:
.
Aitken Double Star catalog
HD number:
74956
HD catalog number
Hipparcos number:
42913
Hipparcos catalog number
V1:
1.99
Magnitude of the primary
V2:
5.57
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2010
Date of last observation
Orbit grade:
3
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 1.188 186.0
-------------------------
1952.0 2.289 154.4
1953.0 2.242 153.9
1954.0 2.195 153.5
1955.0 2.146 153.0
1956.0 2.095 152.5
1957.0 2.043 151.9
1958.0 1.989 151.3
1959.0 1.934 150.7
1960.0 1.877 150.1
1961.0 1.819 149.4
1962.0 1.759 148.7
1963.0 1.698 147.9
1964.0 1.636 147.1
1965.0 1.572 146.2
1966.0 1.507 145.2
1967.0 1.441 144.2
1968.0 1.374 143.0
1969.0 1.305 141.7
1970.0 1.236 140.3
1971.0 1.166 138.7
1972.0 1.095 136.9
1973.0 1.024 134.8
1974.0 0.952 132.4
1975.0 0.881 129.7
1976.0 0.811 126.4
1977.0 0.742 122.6
1978.0 0.676 118.0
1979.0 0.614 112.4
1980.0 0.557 105.6
1981.0 0.508 97.4
1982.0 0.471 87.7
1983.0 0.447 76.6
1984.0 0.441 64.8
1985.0 0.451 53.1
1986.0 0.478 42.3
1987.0 0.517 32.9
1988.0 0.566 25.0
1989.0 0.621 18.4
1990.0 0.679 12.9
1991.0 0.739 8.3
1992.0 0.798 4.4
1993.0 0.853 1.0
1994.0 0.905 358.0
1995.0 0.950 355.3
1996.0 0.988 352.9
1997.0 1.017 350.6
1998.0 1.035 348.4
1999.0 1.043 346.2
2000.0 1.038 344.1
2001.0 1.022 341.9
2002.0 0.994 339.6
2003.0 0.954 337.2
2004.0 0.904 334.5
2005.0 0.846 331.5
2006.0 0.781 328.0
2007.0 0.712 323.9
2008.0 0.640 318.8
2009.0 0.569 312.4
2010.0 0.502 304.3
2011.0 0.444 293.9
2012.0 0.403 280.9
2013.0 0.384 265.7
2014.0 0.391 250.1
2015.0 0.423 236.0
2016.0 0.475 224.4
2017.0 0.540 215.3
2018.0 0.614 208.3
2019.0 0.693 202.9
2020.0 0.774 198.6
2021.0 0.857 195.1
2022.0 0.941 192.2
2023.0 1.024 189.8
2024.0 1.106 187.8
2025.0 1.188 186.0
2026.0 1.267 184.5
2027.0 1.346 183.1
2028.0 1.422 181.9
2029.0 1.497 180.8
2030.0 1.570 179.9
2031.0 1.641 179.0
2032.0 1.710 178.1
2033.0 1.778 177.4
2034.0 1.843 176.7
2035.0 1.906 176.0
2036.0 1.967 175.4
2037.0 2.027 174.8
2038.0 2.084 174.3
2039.0 2.139 173.7
2040.0 2.193 173.2
2041.0 2.244 172.8
2042.0 2.294 172.3
2043.0 2.342 171.9
2044.0 2.387 171.5
2045.0 2.431 171.1
2046.0 2.473 170.7
2047.0 2.513 170.3
2048.0 2.552 170.0
2049.0 2.588 169.6
2050.0 2.623 169.3
2051.0 2.655 168.9
2052.0 2.686 168.6
2053.0 2.716 168.3
2054.0 2.743 168.0
2055.0 2.769 167.7
2056.0 2.793 167.4
2057.0 2.815 167.1
2058.0 2.836 166.8
2059.0 2.855 166.5
2060.0 2.872 166.2
2061.0 2.887 166.0
2062.0 2.901 165.7
2063.0 2.913 165.4
2064.0 2.923 165.1
2065.0 2.932 164.9
2066.0 2.939 164.6
2067.0 2.945 164.3
2068.0 2.949 164.1
2069.0 2.951 163.8
2070.0 2.952 163.5
2071.0 2.951 163.3
2072.0 2.948 163.0
2073.0 2.944 162.7
2074.0 2.939 162.5
2075.0 2.931 162.2
2076.0 2.922 161.9
2077.0 2.912 161.7
2078.0 2.900 161.4
2079.0 2.886 161.1
2080.0 2.871 160.8
2081.0 2.854 160.5
2082.0 2.836 160.3
2083.0 2.816 160.0
2084.0 2.795 159.7
2085.0 2.772 159.4
2086.0 2.747 159.1
2087.0 2.721 158.8
2088.0 2.693 158.5
2089.0 2.664 158.1
2090.0 2.634 157.8
2091.0 2.601 157.5
2092.0 2.567 157.1
2093.0 2.532 156.8
2094.0 2.495 156.4
2095.0 2.457 156.0
2096.0 2.417 155.6
2097.0 2.375 155.2
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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