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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 19:40:30
WDS:
HO197AB
WDS ID/Discoverer
P:
170.300
Orbital period (years)
a:
0.419
Semi-major axis (arcseconds)
i:
106.7
Inclination (degrees)
Ω:
120.4
Longitude of ascending node (degrees)
T:
1843.590
Epoch of periastron passage (year)
e:
0.456
Eccentricity
ω:
249.6
Longitude of periastron (degrees)
Start-Year:
1940.0
Year
End-Year:
2110.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
231125.83+381311.3
Epoch-2000 right ascension and declination
WDS-ID:
23114+3813
WDS designation
Discoverer Code:
HO197AB
Discover designation and components
ADS number:
16576
Aitken Double Star catalog
HD number:
218917
HD catalog number
Hipparcos number:
114504
Hipparcos catalog number
V1:
8.47
Magnitude of the primary
V2:
9.16
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2009
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 0.191 138.3
-------------------------
1940.0 0.202 62.8
1941.0 0.197 60.4
1942.0 0.192 57.9
1943.0 0.188 55.2
1944.0 0.183 52.5
1945.0 0.180 49.6
1946.0 0.176 46.6
1947.0 0.174 43.5
1948.0 0.171 40.3
1949.0 0.169 37.0
1950.0 0.168 33.6
1951.0 0.167 30.2
1952.0 0.166 26.8
1953.0 0.166 23.4
1954.0 0.167 19.9
1955.0 0.168 16.5
1956.0 0.169 13.2
1957.0 0.171 9.9
1958.0 0.173 6.7
1959.0 0.176 3.6
1960.0 0.180 0.6
1961.0 0.183 357.7
1962.0 0.187 354.9
1963.0 0.191 352.3
1964.0 0.196 349.7
1965.0 0.201 347.3
1966.0 0.206 345.0
1967.0 0.211 342.8
1968.0 0.216 340.7
1969.0 0.221 338.8
1970.0 0.227 336.9
1971.0 0.232 335.1
1972.0 0.238 333.3
1973.0 0.243 331.7
1974.0 0.249 330.1
1975.0 0.255 328.6
1976.0 0.260 327.2
1977.0 0.265 325.8
1978.0 0.270 324.5
1979.0 0.276 323.2
1980.0 0.280 322.0
1981.0 0.285 320.8
1982.0 0.290 319.7
1983.0 0.294 318.6
1984.0 0.298 317.5
1985.0 0.301 316.4
1986.0 0.305 315.4
1987.0 0.308 314.4
1988.0 0.310 313.4
1989.0 0.312 312.4
1990.0 0.314 311.4
1991.0 0.315 310.5
1992.0 0.315 309.5
1993.0 0.315 308.6
1994.0 0.315 307.6
1995.0 0.313 306.6
1996.0 0.311 305.7
1997.0 0.308 304.7
1998.0 0.304 303.7
1999.0 0.299 302.6
2000.0 0.293 301.5
2001.0 0.286 300.4
2002.0 0.278 299.2
2003.0 0.269 298.0
2004.0 0.259 296.6
2005.0 0.247 295.1
2006.0 0.235 293.5
2007.0 0.221 291.7
2008.0 0.205 289.6
2009.0 0.189 287.1
2010.0 0.172 284.2
2011.0 0.153 280.6
2012.0 0.135 276.0
2013.0 0.116 270.0
2014.0 0.099 261.7
2015.0 0.083 250.0
2016.0 0.071 233.7
2017.0 0.067 213.4
2018.0 0.071 192.9
2019.0 0.082 176.2
2020.0 0.097 164.1
2021.0 0.115 155.5
2022.0 0.134 149.4
2023.0 0.153 144.7
2024.0 0.172 141.1
2025.0 0.191 138.3
2026.0 0.210 135.9
2027.0 0.227 133.9
2028.0 0.244 132.2
2029.0 0.261 130.7
2030.0 0.276 129.4
2031.0 0.291 128.2
2032.0 0.304 127.1
2033.0 0.318 126.1
2034.0 0.330 125.2
2035.0 0.341 124.4
2036.0 0.352 123.6
2037.0 0.362 122.9
2038.0 0.372 122.2
2039.0 0.381 121.5
2040.0 0.389 120.9
2041.0 0.397 120.2
2042.0 0.404 119.6
2043.0 0.410 119.1
2044.0 0.416 118.5
2045.0 0.421 118.0
2046.0 0.426 117.4
2047.0 0.430 116.9
2048.0 0.434 116.4
2049.0 0.437 115.9
2050.0 0.440 115.4
2051.0 0.443 114.9
2052.0 0.445 114.5
2053.0 0.447 114.0
2054.0 0.448 113.5
2055.0 0.449 113.0
2056.0 0.450 112.6
2057.0 0.450 112.1
2058.0 0.450 111.6
2059.0 0.449 111.2
2060.0 0.449 110.7
2061.0 0.448 110.2
2062.0 0.446 109.7
2063.0 0.445 109.3
2064.0 0.443 108.8
2065.0 0.441 108.3
2066.0 0.439 107.8
2067.0 0.436 107.3
2068.0 0.433 106.8
2069.0 0.430 106.3
2070.0 0.427 105.8
2071.0 0.423 105.3
2072.0 0.420 104.7
2073.0 0.416 104.2
2074.0 0.412 103.6
2075.0 0.407 103.1
2076.0 0.403 102.5
2077.0 0.398 101.9
2078.0 0.394 101.3
2079.0 0.389 100.7
2080.0 0.384 100.0
2081.0 0.378 99.4
2082.0 0.373 98.7
2083.0 0.368 98.0
2084.0 0.362 97.3
2085.0 0.356 96.6
2086.0 0.351 95.8
2087.0 0.345 95.0
2088.0 0.339 94.2
2089.0 0.333 93.4
2090.0 0.326 92.5
2091.0 0.320 91.6
2092.0 0.314 90.6
2093.0 0.308 89.6
2094.0 0.301 88.6
2095.0 0.295 87.5
2096.0 0.288 86.4
2097.0 0.282 85.3
2098.0 0.275 84.0
2099.0 0.269 82.8
2100.0 0.263 81.4
2101.0 0.256 80.0
2102.0 0.250 78.5
2103.0 0.244 77.0
2104.0 0.237 75.3
2105.0 0.231 73.6
2106.0 0.225 71.8
2107.0 0.220 69.9
2108.0 0.214 67.8
2109.0 0.208 65.7
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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