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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 19:30:04
WDS:
HU380BC
WDS ID/Discoverer
P:
116.610
Orbital period (years)
a:
0.315
Semi-major axis (arcseconds)
i:
128.0
Inclination (degrees)
Ω:
76.1
Longitude of ascending node (degrees)
T:
1949.620
Epoch of periastron passage (year)
e:
0.279
Eccentricity
ω:
14.8
Longitude of periastron (degrees)
Start-Year:
1967.0
Year
End-Year:
2083.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
215346.85-200023.7
Epoch-2000 right ascension and declination
WDS-ID:
21538-2000
WDS designation
Discoverer Code:
HU380BC
Discover designation and components
ADS number:
15419
Aitken Double Star catalog
HD number:
.
HD catalog number
Hipparcos number:
108072
Hipparcos catalog number
V1:
10.34
Magnitude of the primary
V2:
10.56
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2007
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 0.311 222.7
-------------------------
1967.0 0.178 331.3
1968.0 0.184 325.8
1969.0 0.192 320.6
1970.0 0.200 315.9
1971.0 0.208 311.5
1972.0 0.217 307.5
1973.0 0.227 303.8
1974.0 0.236 300.5
1975.0 0.246 297.3
1976.0 0.255 294.5
1977.0 0.265 291.8
1978.0 0.274 289.3
1979.0 0.284 287.0
1980.0 0.293 284.8
1981.0 0.301 282.7
1982.0 0.310 280.8
1983.0 0.318 279.0
1984.0 0.326 277.2
1985.0 0.333 275.5
1986.0 0.341 273.9
1987.0 0.347 272.4
1988.0 0.354 270.9
1989.0 0.360 269.5
1990.0 0.365 268.1
1991.0 0.370 266.8
1992.0 0.375 265.5
1993.0 0.379 264.2
1994.0 0.383 263.0
1995.0 0.387 261.8
1996.0 0.390 260.6
1997.0 0.393 259.4
1998.0 0.395 258.2
1999.0 0.397 257.1
2000.0 0.398 255.9
2001.0 0.399 254.8
2002.0 0.400 253.6
2003.0 0.400 252.5
2004.0 0.399 251.4
2005.0 0.399 250.2
2006.0 0.398 249.1
2007.0 0.396 247.9
2008.0 0.394 246.8
2009.0 0.392 245.6
2010.0 0.390 244.4
2011.0 0.387 243.2
2012.0 0.383 242.0
2013.0 0.380 240.8
2014.0 0.376 239.5
2015.0 0.371 238.2
2016.0 0.367 236.9
2017.0 0.361 235.5
2018.0 0.356 234.1
2019.0 0.350 232.6
2020.0 0.344 231.1
2021.0 0.338 229.6
2022.0 0.332 228.0
2023.0 0.325 226.3
2024.0 0.318 224.5
2025.0 0.311 222.7
2026.0 0.304 220.8
2027.0 0.296 218.8
2028.0 0.288 216.6
2029.0 0.281 214.4
2030.0 0.273 212.0
2031.0 0.265 209.5
2032.0 0.257 206.9
2033.0 0.250 204.1
2034.0 0.242 201.1
2035.0 0.235 197.9
2036.0 0.228 194.5
2037.0 0.221 190.9
2038.0 0.215 187.1
2039.0 0.209 183.0
2040.0 0.203 178.8
2041.0 0.199 174.3
2042.0 0.195 169.6
2043.0 0.192 164.7
2044.0 0.190 159.8
2045.0 0.188 154.7
2046.0 0.188 149.5
2047.0 0.188 144.4
2048.0 0.189 139.3
2049.0 0.191 134.3
2050.0 0.194 129.4
2051.0 0.197 124.6
2052.0 0.200 120.0
2053.0 0.204 115.6
2054.0 0.208 111.3
2055.0 0.212 107.2
2056.0 0.216 103.2
2057.0 0.220 99.4
2058.0 0.223 95.7
2059.0 0.226 92.1
2060.0 0.228 88.6
2061.0 0.229 85.1
2062.0 0.230 81.7
2063.0 0.229 78.2
2064.0 0.228 74.8
2065.0 0.226 71.3
2066.0 0.223 67.7
2067.0 0.220 64.0
2068.0 0.215 60.2
2069.0 0.210 56.2
2070.0 0.204 51.9
2071.0 0.198 47.5
2072.0 0.192 42.7
2073.0 0.186 37.6
2074.0 0.180 32.2
2075.0 0.175 26.5
2076.0 0.171 20.4
2077.0 0.167 14.1
2078.0 0.165 7.5
2079.0 0.164 0.8
2080.0 0.164 354.0
2081.0 0.166 347.4
2082.0 0.170 341.0
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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