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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:29:43

Orbital Elements for BU1000AB,C
WDS: BU1000AB,C WDS ID/Discoverer
P: 120.880 Orbital period (years)
a: 1.571 Semi-major axis (arcseconds)
i: 36.5 Inclination (degrees)
Ω: 132.5 Longitude of ascending node (degrees)
T: 1955.240 Epoch of periastron passage (year)
e: 0.23 Eccentricity
ω: 54.3 Longitude of periastron (degrees)
Start-Year: 1965.0 Year
End-Year: 2085.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU1000AB,C
Position: 013500.96-295438.0 Epoch-2000 right ascension and declination
WDS-ID: 01350-2955 WDS designation
Discoverer Code: BU1000AB,C Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 9770 HD catalog number
Hipparcos number: 7372 Hipparcos catalog number
V1: 7.2 Magnitude of the primary
V2: 11.5 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BU1000AB,C



WDS 6th Orbit including measures of BU1000AB,C

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


Ephemeris of BU1000AB,C
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.569     20.9
-------------------------
1965.0     1.040    235.0
1966.0     1.060    240.3
1967.0     1.084    245.3
1968.0     1.110    250.1
1969.0     1.140    254.6
1970.0     1.170    258.9
1971.0     1.203    263.0
1972.0     1.236    266.9
1973.0     1.270    270.5
1974.0     1.304    274.0
1975.0     1.339    277.3
1976.0     1.372    280.4
1977.0     1.406    283.4
1978.0     1.438    286.2
1979.0     1.470    289.0
1980.0     1.500    291.6
1981.0     1.529    294.1
1982.0     1.557    296.5
1983.0     1.583    298.8
1984.0     1.608    301.1
1985.0     1.632    303.3
1986.0     1.654    305.4
1987.0     1.674    307.5
1988.0     1.693    309.5
1989.0     1.710    311.5
1990.0     1.726    313.4
1991.0     1.740    315.4
1992.0     1.753    317.2
1993.0     1.764    319.1
1994.0     1.773    320.9
1995.0     1.781    322.8
1996.0     1.788    324.6
1997.0     1.793    326.4
1998.0     1.797    328.1
1999.0     1.800    329.9
2000.0     1.801    331.7
2001.0     1.801    333.5
2002.0     1.800    335.2
2003.0     1.798    337.0
2004.0     1.795    338.8
2005.0     1.790    340.6
2006.0     1.785    342.4
2007.0     1.778    344.2
2008.0     1.771    346.0
2009.0     1.763    347.9
2010.0     1.754    349.7
2011.0     1.745    351.6
2012.0     1.734    353.5
2013.0     1.724    355.4
2014.0     1.712    357.4
2015.0     1.700    359.3
2016.0     1.688      1.4
2017.0     1.675      3.4
2018.0     1.662      5.4
2019.0     1.649      7.5
2020.0     1.636      9.7
2021.0     1.622     11.8
2022.0     1.609     14.0
2023.0     1.596     16.3
2024.0     1.582     18.6
2025.0     1.569     20.9
2026.0     1.556     23.2
2027.0     1.543     25.6
2028.0     1.531     28.1
2029.0     1.519     30.5
2030.0     1.508     33.0
2031.0     1.497     35.6
2032.0     1.486     38.2
2033.0     1.477     40.8
2034.0     1.468     43.5
2035.0     1.459     46.1
2036.0     1.451     48.9
2037.0     1.444     51.6
2038.0     1.438     54.4
2039.0     1.432     57.2
2040.0     1.427     60.0
2041.0     1.423     62.8
2042.0     1.419     65.7
2043.0     1.416     68.5
2044.0     1.413     71.4
2045.0     1.411     74.3
2046.0     1.409     77.2
2047.0     1.408     80.1
2048.0     1.406     83.0
2049.0     1.405     85.9
2050.0     1.404     88.8
2051.0     1.403     91.7
2052.0     1.401     94.6
2053.0     1.400     97.6
2054.0     1.397    100.5
2055.0     1.394    103.5
2056.0     1.391    106.4
2057.0     1.386    109.4
2058.0     1.380    112.4
2059.0     1.373    115.4
2060.0     1.365    118.5
2061.0     1.356    121.6
2062.0     1.344    124.8
2063.0     1.332    128.0
2064.0     1.318    131.3
2065.0     1.302    134.6
2066.0     1.284    138.1
2067.0     1.265    141.6
2068.0     1.245    145.2
2069.0     1.223    149.0
2070.0     1.200    152.9
2071.0     1.177    157.0
2072.0     1.153    161.2
2073.0     1.129    165.7
2074.0     1.105    170.3
2075.0     1.083    175.1
2076.0     1.062    180.1
2077.0     1.043    185.3
2078.0     1.027    190.7
2079.0     1.014    196.2
2080.0     1.005    201.8
2081.0     1.000    207.6
2082.0     0.999    213.3
2083.0     1.003    219.1
2084.0     1.012    224.7






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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