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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 17:44:13
WDS:
HU718
WDS ID/Discoverer
P:
139.765
Orbital period (years)
a:
0.552
Semi-major axis (arcseconds)
i:
102.1
Inclination (degrees)
Ω:
34.3
Longitude of ascending node (degrees)
T:
2019.142
Epoch of periastron passage (year)
e:
0.783
Eccentricity
ω:
79.3
Longitude of periastron (degrees)
Start-Year:
1956.0
Year
End-Year:
2094.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
090030.68+322503.2
Epoch-2000 right ascension and declination
WDS-ID:
09005+3225
WDS designation
Discoverer Code:
HU718
Discover designation and components
ADS number:
7124
Aitken Double Star catalog
HD number:
76975
HD catalog number
Hipparcos number:
44230
Hipparcos catalog number
V1:
9.30
Magnitude of the primary
V2:
9.49
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 0.267 213.4
-------------------------
1956.0 0.238 155.7
1957.0 0.234 153.8
1958.0 0.229 151.9
1959.0 0.225 149.9
1960.0 0.221 147.9
1961.0 0.217 145.7
1962.0 0.213 143.5
1963.0 0.209 141.2
1964.0 0.206 138.9
1965.0 0.203 136.4
1966.0 0.201 133.9
1967.0 0.199 131.3
1968.0 0.197 128.7
1969.0 0.195 126.1
1970.0 0.194 123.3
1971.0 0.193 120.6
1972.0 0.192 117.8
1973.0 0.192 115.1
1974.0 0.192 112.3
1975.0 0.193 109.5
1976.0 0.194 106.8
1977.0 0.195 104.1
1978.0 0.196 101.4
1979.0 0.198 98.8
1980.0 0.200 96.2
1981.0 0.203 93.7
1982.0 0.206 91.2
1983.0 0.209 88.9
1984.0 0.212 86.5
1985.0 0.215 84.3
1986.0 0.219 82.1
1987.0 0.223 80.0
1988.0 0.226 78.0
1989.0 0.230 76.0
1990.0 0.234 74.1
1991.0 0.238 72.3
1992.0 0.243 70.5
1993.0 0.247 68.8
1994.0 0.251 67.2
1995.0 0.255 65.6
1996.0 0.259 64.0
1997.0 0.262 62.5
1998.0 0.266 61.0
1999.0 0.269 59.6
2000.0 0.272 58.2
2001.0 0.275 56.8
2002.0 0.278 55.5
2003.0 0.280 54.2
2004.0 0.281 52.9
2005.0 0.282 51.6
2006.0 0.282 50.3
2007.0 0.281 49.0
2008.0 0.280 47.7
2009.0 0.277 46.4
2010.0 0.273 45.0
2011.0 0.266 43.6
2012.0 0.258 42.2
2013.0 0.246 40.5
2014.0 0.231 38.8
2015.0 0.211 36.7
2016.0 0.184 34.0
2017.0 0.147 30.3
2018.0 0.098 23.3
2019.0 0.040 357.3
2020.0 0.046 248.0
2021.0 0.105 226.5
2022.0 0.157 220.4
2023.0 0.201 217.2
2024.0 0.237 215.0
2025.0 0.267 213.4
2026.0 0.293 212.1
2027.0 0.315 211.0
2028.0 0.334 210.0
2029.0 0.350 209.1
2030.0 0.365 208.3
2031.0 0.377 207.6
2032.0 0.389 206.9
2033.0 0.398 206.2
2034.0 0.407 205.6
2035.0 0.414 205.0
2036.0 0.421 204.4
2037.0 0.426 203.8
2038.0 0.431 203.3
2039.0 0.435 202.7
2040.0 0.438 202.2
2041.0 0.441 201.7
2042.0 0.444 201.2
2043.0 0.445 200.6
2044.0 0.446 200.1
2045.0 0.447 199.6
2046.0 0.448 199.1
2047.0 0.448 198.6
2048.0 0.447 198.1
2049.0 0.446 197.6
2050.0 0.445 197.0
2051.0 0.444 196.5
2052.0 0.442 196.0
2053.0 0.440 195.5
2054.0 0.438 195.0
2055.0 0.436 194.4
2056.0 0.433 193.9
2057.0 0.430 193.3
2058.0 0.427 192.8
2059.0 0.424 192.2
2060.0 0.420 191.6
2061.0 0.416 191.0
2062.0 0.412 190.4
2063.0 0.408 189.8
2064.0 0.404 189.2
2065.0 0.400 188.6
2066.0 0.396 187.9
2067.0 0.391 187.3
2068.0 0.386 186.6
2069.0 0.381 185.9
2070.0 0.377 185.2
2071.0 0.372 184.5
2072.0 0.366 183.7
2073.0 0.361 182.9
2074.0 0.356 182.1
2075.0 0.351 181.3
2076.0 0.345 180.5
2077.0 0.340 179.6
2078.0 0.334 178.7
2079.0 0.329 177.8
2080.0 0.323 176.8
2081.0 0.318 175.8
2082.0 0.312 174.8
2083.0 0.306 173.7
2084.0 0.301 172.6
2085.0 0.295 171.4
2086.0 0.290 170.2
2087.0 0.284 169.0
2088.0 0.279 167.7
2089.0 0.273 166.4
2090.0 0.268 165.0
2091.0 0.262 163.5
2092.0 0.257 162.0
2093.0 0.252 160.4
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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