Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:40:40

Orbital Elements for BU205AB
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

Further data from the WDS Sixth Catalog of Orbits for BU205AB
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

Double Star Orbit for BU205AB



WDS 6th Orbit including measures of BU205AB

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of BU205AB
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






Disclaimer
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.


Acknowledgements
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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