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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 17:40:40
WDS:
BU205AB
WDS ID/Discoverer
P:
140.560
Orbital period (years)
a:
0.526
Semi-major axis (arcseconds)
i:
145.3
Inclination (degrees)
Ω:
172.8
Longitude of ascending node (degrees)
T:
1953.670
Epoch of periastron passage (year)
e:
0.269
Eccentricity
ω:
83.0
Longitude of periastron (degrees)
Start-Year:
1955.0
Year
End-Year:
2095.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
083304.85-243624.8
Epoch-2000 right ascension and declination
WDS-ID:
08331-2436
WDS designation
Discoverer Code:
BU205AB
Discover designation and components
ADS number:
6871
Aitken Double Star catalog
HD number:
72626
HD catalog number
Hipparcos number:
41949
Hipparcos catalog number
V1:
7.14
Magnitude of the primary
V2:
6.84
Magnitude of the secondary
Equinox:
Equinox
Date:
2018
Date of last observation
Orbit grade:
2
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 0.550 269.3
-------------------------
1955.0 0.317 83.9
1956.0 0.318 78.3
1957.0 0.320 72.7
1958.0 0.324 67.3
1959.0 0.329 62.1
1960.0 0.335 57.0
1961.0 0.342 52.1
1962.0 0.350 47.4
1963.0 0.359 42.9
1964.0 0.368 38.7
1965.0 0.377 34.6
1966.0 0.387 30.8
1967.0 0.397 27.1
1968.0 0.407 23.6
1969.0 0.417 20.3
1970.0 0.426 17.2
1971.0 0.436 14.2
1972.0 0.445 11.3
1973.0 0.454 8.5
1974.0 0.463 5.8
1975.0 0.472 3.3
1976.0 0.480 0.8
1977.0 0.487 358.4
1978.0 0.495 356.1
1979.0 0.502 353.8
1980.0 0.508 351.6
1981.0 0.514 349.4
1982.0 0.520 347.3
1983.0 0.525 345.3
1984.0 0.530 343.3
1985.0 0.535 341.3
1986.0 0.539 339.3
1987.0 0.543 337.4
1988.0 0.546 335.5
1989.0 0.549 333.7
1990.0 0.552 331.8
1991.0 0.555 330.0
1992.0 0.557 328.2
1993.0 0.559 326.4
1994.0 0.561 324.6
1995.0 0.562 322.8
1996.0 0.564 321.0
1997.0 0.565 319.3
1998.0 0.566 317.5
1999.0 0.566 315.8
2000.0 0.567 314.0
2001.0 0.567 312.3
2002.0 0.567 310.5
2003.0 0.567 308.8
2004.0 0.567 307.0
2005.0 0.567 305.3
2006.0 0.566 303.5
2007.0 0.566 301.8
2008.0 0.565 300.0
2009.0 0.564 298.3
2010.0 0.564 296.5
2011.0 0.563 294.7
2012.0 0.562 293.0
2013.0 0.561 291.2
2014.0 0.560 289.4
2015.0 0.559 287.6
2016.0 0.558 285.8
2017.0 0.557 284.0
2018.0 0.556 282.2
2019.0 0.555 280.4
2020.0 0.554 278.6
2021.0 0.553 276.7
2022.0 0.552 274.9
2023.0 0.552 273.0
2024.0 0.551 271.2
2025.0 0.550 269.3
2026.0 0.549 267.5
2027.0 0.548 265.6
2028.0 0.548 263.8
2029.0 0.547 261.9
2030.0 0.546 260.0
2031.0 0.546 258.1
2032.0 0.545 256.2
2033.0 0.545 254.4
2034.0 0.544 252.5
2035.0 0.544 250.6
2036.0 0.544 248.7
2037.0 0.543 246.8
2038.0 0.543 244.9
2039.0 0.543 243.0
2040.0 0.542 241.1
2041.0 0.542 239.1
2042.0 0.542 237.2
2043.0 0.542 235.3
2044.0 0.542 233.4
2045.0 0.541 231.5
2046.0 0.541 229.6
2047.0 0.541 227.7
2048.0 0.540 225.7
2049.0 0.540 223.8
2050.0 0.539 221.9
2051.0 0.539 220.0
2052.0 0.538 218.0
2053.0 0.537 216.1
2054.0 0.536 214.1
2055.0 0.535 212.2
2056.0 0.534 210.2
2057.0 0.533 208.2
2058.0 0.531 206.3
2059.0 0.529 204.3
2060.0 0.527 202.3
2061.0 0.525 200.2
2062.0 0.523 198.2
2063.0 0.520 196.1
2064.0 0.517 194.0
2065.0 0.514 191.9
2066.0 0.510 189.8
2067.0 0.506 187.6
2068.0 0.502 185.4
2069.0 0.497 183.2
2070.0 0.492 180.9
2071.0 0.487 178.5
2072.0 0.481 176.1
2073.0 0.475 173.7
2074.0 0.468 171.1
2075.0 0.461 168.5
2076.0 0.454 165.9
2077.0 0.446 163.1
2078.0 0.438 160.2
2079.0 0.430 157.2
2080.0 0.421 154.1
2081.0 0.412 150.9
2082.0 0.403 147.5
2083.0 0.394 144.0
2084.0 0.384 140.3
2085.0 0.375 136.4
2086.0 0.366 132.3
2087.0 0.358 128.0
2088.0 0.349 123.5
2089.0 0.342 118.8
2090.0 0.335 113.9
2091.0 0.329 108.8
2092.0 0.324 103.5
2093.0 0.320 98.1
2094.0 0.318 92.6
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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