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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 18:34:59
WDS:
NZO65
WDS ID/Discoverer
P:
120.600
Orbital period (years)
a:
0.6831
Semi-major axis (arcseconds)
i:
85.7
Inclination (degrees)
Ω:
122.2
Longitude of ascending node (degrees)
T:
2009.880
Epoch of periastron passage (year)
e:
0.464
Eccentricity
ω:
219.0
Longitude of periastron (degrees)
Start-Year:
1965.0
Year
End-Year:
2085.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
155448.49-655404.3
Epoch-2000 right ascension and declination
WDS-ID:
15548-6554
WDS designation
Discoverer Code:
NZO65
Discover designation and components
ADS number:
.
Aitken Double Star catalog
HD number:
141747
HD catalog number
Hipparcos number:
77921
Hipparcos catalog number
V1:
8.35
Magnitude of the primary
V2:
8.49
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
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 0.425 118.3
-------------------------
1965.0 0.499 129.2
1966.0 0.476 129.6
1967.0 0.453 130.0
1968.0 0.430 130.5
1969.0 0.406 131.0
1970.0 0.381 131.6
1971.0 0.357 132.3
1972.0 0.332 133.1
1973.0 0.306 134.0
1974.0 0.281 135.1
1975.0 0.255 136.4
1976.0 0.229 138.0
1977.0 0.202 140.0
1978.0 0.176 142.6
1979.0 0.150 146.1
1980.0 0.125 151.0
1981.0 0.101 158.4
1982.0 0.079 170.1
1983.0 0.063 189.1
1984.0 0.057 216.0
1985.0 0.064 242.4
1986.0 0.081 260.4
1987.0 0.103 271.5
1988.0 0.128 278.5
1989.0 0.153 283.3
1990.0 0.178 286.7
1991.0 0.204 289.2
1992.0 0.229 291.2
1993.0 0.253 292.8
1994.0 0.277 294.1
1995.0 0.300 295.2
1996.0 0.321 296.2
1997.0 0.341 297.0
1998.0 0.359 297.8
1999.0 0.375 298.4
2000.0 0.388 299.1
2001.0 0.398 299.7
2002.0 0.404 300.3
2003.0 0.407 300.8
2004.0 0.405 301.4
2005.0 0.398 301.9
2006.0 0.386 302.5
2007.0 0.368 303.2
2008.0 0.345 303.9
2009.0 0.315 304.8
2010.0 0.281 305.8
2011.0 0.241 307.2
2012.0 0.197 309.1
2013.0 0.151 312.2
2014.0 0.103 318.2
2015.0 0.056 334.3
2016.0 0.031 39.7
2017.0 0.064 92.4
2018.0 0.112 105.3
2019.0 0.161 110.4
2020.0 0.209 113.2
2021.0 0.255 114.9
2022.0 0.301 116.1
2023.0 0.344 117.0
2024.0 0.385 117.7
2025.0 0.425 118.3
2026.0 0.463 118.7
2027.0 0.499 119.1
2028.0 0.533 119.5
2029.0 0.565 119.8
2030.0 0.595 120.1
2031.0 0.624 120.3
2032.0 0.651 120.5
2033.0 0.676 120.8
2034.0 0.700 120.9
2035.0 0.722 121.1
2036.0 0.743 121.3
2037.0 0.762 121.5
2038.0 0.780 121.6
2039.0 0.796 121.8
2040.0 0.811 121.9
2041.0 0.825 122.1
2042.0 0.837 122.2
2043.0 0.849 122.3
2044.0 0.859 122.4
2045.0 0.867 122.6
2046.0 0.875 122.7
2047.0 0.882 122.8
2048.0 0.887 122.9
2049.0 0.892 123.0
2050.0 0.895 123.2
2051.0 0.898 123.3
2052.0 0.899 123.4
2053.0 0.900 123.5
2054.0 0.900 123.6
2055.0 0.898 123.7
2056.0 0.896 123.8
2057.0 0.893 124.0
2058.0 0.889 124.1
2059.0 0.884 124.2
2060.0 0.879 124.3
2061.0 0.872 124.4
2062.0 0.865 124.6
2063.0 0.857 124.7
2064.0 0.849 124.8
2065.0 0.839 124.9
2066.0 0.829 125.1
2067.0 0.818 125.2
2068.0 0.806 125.4
2069.0 0.794 125.5
2070.0 0.781 125.6
2071.0 0.767 125.8
2072.0 0.753 126.0
2073.0 0.738 126.1
2074.0 0.722 126.3
2075.0 0.706 126.5
2076.0 0.689 126.7
2077.0 0.672 126.9
2078.0 0.654 127.1
2079.0 0.635 127.3
2080.0 0.616 127.5
2081.0 0.596 127.8
2082.0 0.576 128.1
2083.0 0.555 128.4
2084.0 0.534 128.7
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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