Double Star Calculator - Orbit

Orbital Elements for BU382AB
WDS: BU382AB WDS ID/Discoverer
P: 104.850 Orbital period (years)
a: 0.626 Semi-major axis (arcseconds)
i: 47.2 Inclination (degrees)
Ω: 29.9 Longitude of ascending node (degrees)
T: 2043.800 Epoch of periastron passage (year)
e: 0.541 Eccentricity
ω: 9.0 Longitude of periastron (degrees)
Start-Year: 1972.575 Year
End-Year: 2077.425 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU382AB
Position: 225340.16+444457.1 Epoch-2000 right ascension and declination
WDS-ID: 22537+4445 WDS designation
Discoverer Code: BU382AB Discover designation and components
ADS number: 16345 Aitken Double Star catalog
HD number: 216608 HD catalog number
Hipparcos number: 113048 Hipparcos catalog number
V1: 5.97 Magnitude of the primary
V2: 7.79 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2011 Date of last observation
Orbit grade: 2 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Sca2014a Reference

Double Star Orbit for BU382AB



WDS 6th Orbit including measures of BU382AB

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


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of BU382AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.467   266.56
--------------------------
1972.58    0.856   199.27
1973.58    0.868   200.30
1974.58    0.880   201.31
1975.58    0.891   202.29
1976.58    0.901   203.25
1977.58    0.910   204.19
1978.58    0.919   205.11
1979.58    0.926   206.01
1980.58    0.933   206.90
1981.58    0.939   207.78
1982.58    0.944   208.64
1983.58    0.949   209.50
1984.58    0.953   210.35
1985.58    0.956   211.19
1986.58    0.958   212.03
1987.58    0.959   212.87
1988.58    0.960   213.70
1989.58    0.960   214.54
1990.58    0.959   215.37
1991.58    0.958   216.21
1992.58    0.956   217.05
1993.58    0.953   217.89
1994.58    0.949   218.74
1995.58    0.945   219.60
1996.58    0.939   220.47
1997.58    0.934   221.34
1998.58    0.927   222.23
1999.58    0.920   223.13
2000.58    0.912   224.05
2001.58    0.903   224.98
2002.58    0.893   225.94
2003.58    0.883   226.91
2004.58    0.872   227.91
2005.58    0.861   228.93
2006.58    0.848   229.99
2007.58    0.835   231.07
2008.58    0.821   232.19
2009.58    0.807   233.35
2010.58    0.792   234.55
2011.58    0.776   235.81
2012.58    0.759   237.11
2013.58    0.742   238.47
2014.58    0.724   239.91
2015.58    0.705   241.41
2016.58    0.686   243.00
2017.58    0.666   244.68
2018.58    0.646   246.47
2019.58    0.625   248.37
2020.58    0.603   250.41
2021.58    0.581   252.61
2022.58    0.558   254.98
2023.58    0.535   257.55
2024.58    0.512   260.36
2025.58    0.488   263.44
2026.58    0.465   266.83
2027.58    0.441   270.57
2028.58    0.418   274.74
2029.58    0.396   279.38
2030.58    0.374   284.57
2031.58    0.354   290.37
2032.58    0.336   296.83
2033.58    0.320   303.99
2034.58    0.307   311.84
2035.58    0.297   320.30
2036.58    0.290   329.25
2037.58    0.287   338.52
2038.58    0.286   347.90
2039.58    0.288   357.26
2040.58    0.290     6.49
2041.58    0.291    15.61
2042.58    0.290    24.70
2043.58    0.287    33.93
2044.58    0.280    43.49
2045.58    0.272    53.58
2046.58    0.263    64.34
2047.58    0.256    75.75
2048.57    0.254    87.60
2049.57    0.257    99.46
2050.57    0.265   110.80
2051.57    0.280   121.20
2052.57    0.299   130.44
2053.57    0.321   138.47
2054.57    0.346   145.40
2055.57    0.373   151.35
2056.57    0.401   156.50
2057.57    0.429   160.97
2058.57    0.457   164.89
2059.57    0.485   168.36
2060.57    0.513   171.45
2061.57    0.540   174.23
2062.57    0.566   176.74
2063.57    0.592   179.04
2064.57    0.616   181.15
2065.57    0.640   183.09
2066.57    0.663   184.90
2067.57    0.685   186.59
2068.57    0.707   188.18
2069.57    0.727   189.68
2070.57    0.746   191.09
2071.57    0.765   192.44
2072.57    0.783   193.72
2073.57    0.799   194.95
2074.57    0.815   196.13
2075.57    0.830   197.27
2076.57    0.844   198.37






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This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 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.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 18:44:55



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