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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 19:28:11
WDS:
A772
WDS ID/Discoverer
P:
138.700
Orbital period (years)
a:
0.198
Semi-major axis (arcseconds)
i:
152.7
Inclination (degrees)
Ω:
42.8
Longitude of ascending node (degrees)
T:
1999.560
Epoch of periastron passage (year)
e:
0.549
Eccentricity
ω:
233.7
Longitude of periastron (degrees)
Start-Year:
1956.0
Year
End-Year:
2094.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
213930.24+300922.2
Epoch-2000 right ascension and declination
WDS-ID:
21395+3009
WDS designation
Discoverer Code:
A772
Discover designation and components
ADS number:
15182
Aitken Double Star catalog
HD number:
206168
HD catalog number
Hipparcos number:
106940
Hipparcos catalog number
V1:
8.70
Magnitude of the primary
V2:
9.80
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 0.212 40.3
-------------------------
1956.0 0.246 325.4
1957.0 0.243 324.1
1958.0 0.241 322.8
1959.0 0.238 321.5
1960.0 0.235 320.2
1961.0 0.233 318.8
1962.0 0.230 317.4
1963.0 0.227 315.9
1964.0 0.224 314.4
1965.0 0.221 312.9
1966.0 0.218 311.3
1967.0 0.214 309.7
1968.0 0.211 308.0
1969.0 0.208 306.3
1970.0 0.204 304.5
1971.0 0.201 302.7
1972.0 0.197 300.8
1973.0 0.194 298.8
1974.0 0.190 296.8
1975.0 0.186 294.6
1976.0 0.183 292.4
1977.0 0.179 290.1
1978.0 0.175 287.7
1979.0 0.171 285.2
1980.0 0.167 282.5
1981.0 0.163 279.7
1982.0 0.159 276.8
1983.0 0.154 273.7
1984.0 0.150 270.5
1985.0 0.146 267.0
1986.0 0.141 263.3
1987.0 0.137 259.4
1988.0 0.132 255.3
1989.0 0.128 250.8
1990.0 0.123 246.0
1991.0 0.118 240.8
1992.0 0.114 235.2
1993.0 0.109 229.1
1994.0 0.104 222.4
1995.0 0.099 215.1
1996.0 0.095 207.1
1997.0 0.091 198.4
1998.0 0.087 188.8
1999.0 0.084 178.4
2000.0 0.082 167.5
2001.0 0.082 156.2
2002.0 0.083 145.0
2003.0 0.085 134.2
2004.0 0.088 124.1
2005.0 0.093 114.9
2006.0 0.098 106.6
2007.0 0.104 99.2
2008.0 0.111 92.7
2009.0 0.118 86.9
2010.0 0.124 81.8
2011.0 0.131 77.1
2012.0 0.138 73.0
2013.0 0.145 69.2
2014.0 0.151 65.7
2015.0 0.158 62.6
2016.0 0.164 59.6
2017.0 0.170 56.9
2018.0 0.176 54.4
2019.0 0.181 52.0
2020.0 0.187 49.8
2021.0 0.192 47.7
2022.0 0.197 45.7
2023.0 0.202 43.8
2024.0 0.207 42.0
2025.0 0.212 40.3
2026.0 0.216 38.6
2027.0 0.220 37.0
2028.0 0.224 35.5
2029.0 0.228 34.0
2030.0 0.232 32.6
2031.0 0.236 31.2
2032.0 0.239 29.9
2033.0 0.242 28.6
2034.0 0.246 27.3
2035.0 0.249 26.1
2036.0 0.252 24.9
2037.0 0.254 23.7
2038.0 0.257 22.5
2039.0 0.259 21.4
2040.0 0.262 20.3
2041.0 0.264 19.2
2042.0 0.266 18.1
2043.0 0.268 17.0
2044.0 0.270 16.0
2045.0 0.272 15.0
2046.0 0.274 14.0
2047.0 0.275 13.0
2048.0 0.277 12.0
2049.0 0.278 11.0
2050.0 0.279 10.0
2051.0 0.280 9.0
2052.0 0.281 8.1
2053.0 0.282 7.1
2054.0 0.283 6.2
2055.0 0.284 5.2
2056.0 0.285 4.3
2057.0 0.285 3.4
2058.0 0.286 2.4
2059.0 0.286 1.5
2060.0 0.286 0.6
2061.0 0.286 359.7
2062.0 0.287 358.8
2063.0 0.287 357.8
2064.0 0.287 356.9
2065.0 0.286 356.0
2066.0 0.286 355.1
2067.0 0.286 354.2
2068.0 0.285 353.2
2069.0 0.285 352.3
2070.0 0.284 351.4
2071.0 0.284 350.4
2072.0 0.283 349.5
2073.0 0.282 348.5
2074.0 0.281 347.6
2075.0 0.280 346.6
2076.0 0.279 345.7
2077.0 0.278 344.7
2078.0 0.277 343.7
2079.0 0.276 342.7
2080.0 0.274 341.7
2081.0 0.273 340.7
2082.0 0.271 339.7
2083.0 0.270 338.7
2084.0 0.268 337.6
2085.0 0.266 336.6
2086.0 0.265 335.5
2087.0 0.263 334.4
2088.0 0.261 333.3
2089.0 0.259 332.2
2090.0 0.257 331.0
2091.0 0.254 329.9
2092.0 0.252 328.7
2093.0 0.250 327.5
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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