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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 19:41:00
WDS:
HU400
WDS ID/Discoverer
P:
173.660
Orbital period (years)
a:
0.409
Semi-major axis (arcseconds)
i:
130.8
Inclination (degrees)
Ω:
46.2
Longitude of ascending node (degrees)
T:
1881.160
Epoch of periastron passage (year)
e:
0.31
Eccentricity
ω:
76.3
Longitude of periastron (degrees)
Start-Year:
1939.0
Year
End-Year:
2111.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
231737.32+181817.5
Epoch-2000 right ascension and declination
WDS-ID:
23176+1818
WDS designation
Discoverer Code:
HU400
Discover designation and components
ADS number:
16650
Aitken Double Star catalog
HD number:
219675
HD catalog number
Hipparcos number:
115011
Hipparcos catalog number
V1:
7.01
Magnitude of the primary
V2:
8.80
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2000
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 0.371 60.5
-------------------------
1939.0 0.429 196.4
1940.0 0.428 195.3
1941.0 0.426 194.1
1942.0 0.425 192.9
1943.0 0.423 191.7
1944.0 0.421 190.5
1945.0 0.419 189.2
1946.0 0.417 188.0
1947.0 0.414 186.8
1948.0 0.412 185.5
1949.0 0.410 184.2
1950.0 0.407 182.9
1951.0 0.405 181.6
1952.0 0.402 180.3
1953.0 0.400 179.0
1954.0 0.397 177.6
1955.0 0.395 176.2
1956.0 0.392 174.9
1957.0 0.390 173.4
1958.0 0.387 172.0
1959.0 0.384 170.6
1960.0 0.382 169.1
1961.0 0.379 167.6
1962.0 0.377 166.1
1963.0 0.374 164.6
1964.0 0.372 163.0
1965.0 0.370 161.5
1966.0 0.367 159.9
1967.0 0.365 158.3
1968.0 0.363 156.6
1969.0 0.361 155.0
1970.0 0.359 153.3
1971.0 0.357 151.7
1972.0 0.355 150.0
1973.0 0.354 148.2
1974.0 0.352 146.5
1975.0 0.351 144.8
1976.0 0.349 143.0
1977.0 0.348 141.2
1978.0 0.347 139.5
1979.0 0.346 137.7
1980.0 0.346 135.9
1981.0 0.345 134.1
1982.0 0.344 132.3
1983.0 0.344 130.4
1984.0 0.344 128.6
1985.0 0.344 126.8
1986.0 0.344 125.0
1987.0 0.344 123.1
1988.0 0.344 121.3
1989.0 0.344 119.5
1990.0 0.345 117.7
1991.0 0.346 115.9
1992.0 0.346 114.1
1993.0 0.347 112.3
1994.0 0.348 110.5
1995.0 0.349 108.7
1996.0 0.350 107.0
1997.0 0.351 105.2
1998.0 0.353 103.5
1999.0 0.354 101.8
2000.0 0.355 100.0
2001.0 0.357 98.3
2002.0 0.358 96.7
2003.0 0.360 95.0
2004.0 0.361 93.3
2005.0 0.362 91.7
2006.0 0.364 90.0
2007.0 0.365 88.4
2008.0 0.367 86.8
2009.0 0.368 85.2
2010.0 0.369 83.6
2011.0 0.370 82.1
2012.0 0.372 80.5
2013.0 0.372 78.9
2014.0 0.373 77.4
2015.0 0.374 75.8
2016.0 0.375 74.3
2017.0 0.375 72.8
2018.0 0.375 71.2
2019.0 0.375 69.7
2020.0 0.375 68.2
2021.0 0.375 66.6
2022.0 0.374 65.1
2023.0 0.373 63.6
2024.0 0.372 62.0
2025.0 0.371 60.5
2026.0 0.369 58.9
2027.0 0.367 57.3
2028.0 0.364 55.7
2029.0 0.362 54.0
2030.0 0.359 52.4
2031.0 0.355 50.7
2032.0 0.351 49.0
2033.0 0.347 47.2
2034.0 0.342 45.4
2035.0 0.337 43.5
2036.0 0.332 41.6
2037.0 0.326 39.6
2038.0 0.319 37.5
2039.0 0.313 35.4
2040.0 0.306 33.1
2041.0 0.298 30.8
2042.0 0.290 28.3
2043.0 0.282 25.6
2044.0 0.274 22.8
2045.0 0.265 19.9
2046.0 0.256 16.7
2047.0 0.248 13.3
2048.0 0.239 9.7
2049.0 0.230 5.8
2050.0 0.222 1.5
2051.0 0.214 357.0
2052.0 0.207 352.1
2053.0 0.200 346.9
2054.0 0.195 341.4
2055.0 0.191 335.6
2056.0 0.187 329.6
2057.0 0.186 323.4
2058.0 0.186 317.1
2059.0 0.187 310.9
2060.0 0.190 304.8
2061.0 0.194 298.9
2062.0 0.199 293.3
2063.0 0.205 288.0
2064.0 0.213 283.1
2065.0 0.221 278.5
2066.0 0.229 274.2
2067.0 0.238 270.3
2068.0 0.247 266.6
2069.0 0.257 263.2
2070.0 0.267 260.1
2071.0 0.276 257.2
2072.0 0.286 254.4
2073.0 0.295 251.9
2074.0 0.304 249.5
2075.0 0.313 247.2
2076.0 0.322 245.1
2077.0 0.331 243.1
2078.0 0.339 241.1
2079.0 0.346 239.3
2080.0 0.354 237.6
2081.0 0.361 235.9
2082.0 0.368 234.2
2083.0 0.374 232.7
2084.0 0.380 231.2
2085.0 0.386 229.7
2086.0 0.392 228.3
2087.0 0.397 226.9
2088.0 0.401 225.5
2089.0 0.406 224.2
2090.0 0.410 222.9
2091.0 0.413 221.6
2092.0 0.417 220.4
2093.0 0.420 219.2
2094.0 0.423 218.0
2095.0 0.425 216.8
2096.0 0.427 215.6
2097.0 0.429 214.4
2098.0 0.431 213.2
2099.0 0.432 212.1
2100.0 0.433 210.9
2101.0 0.434 209.8
2102.0 0.435 208.6
2103.0 0.435 207.5
2104.0 0.435 206.4
2105.0 0.435 205.2
2106.0 0.435 204.1
2107.0 0.435 202.9
2108.0 0.434 201.8
2109.0 0.433 200.7
2110.0 0.433 199.5
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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