Double Star Calculator - Orbit

Orbital Elements for A829
WDS: A829 WDS ID/Discoverer
P: 111.380 Orbital period (years)
a: 0.417 Semi-major axis (arcseconds)
i: 120.6 Inclination (degrees)
Ω: 260.1 Longitude of ascending node (degrees)
T: 1985.100 Epoch of periastron passage (year)
e: 0.743 Eccentricity
ω: 77.2 Longitude of periastron (degrees)
Start-Year: 1969.31 Year
End-Year: 2080.69 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A829
Position: 032608.81+122854.7 Epoch-2000 right ascension and declination
WDS-ID: 03261+1229 WDS designation
Discoverer Code: A829 Discover designation and components
ADS number: 2531 Aitken Double Star catalog
HD number: 21261 HD catalog number
Hipparcos number: 16008 Hipparcos catalog number
V1: 8.82 Magnitude of the primary
V2: 10.38 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2003 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Hrt2008 Reference

Double Star Orbit for A829



WDS 6th Orbit including measures of A829

-- 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 A829
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.425    30.33
--------------------------
1969.31    0.279   305.19
1970.31    0.276   302.71
1971.31    0.272   300.15
1972.31    0.267   297.51
1973.31    0.262   294.77
1974.31    0.256   291.92
1975.31    0.250   288.93
1976.31    0.242   285.76
1977.31    0.233   282.37
1978.31    0.223   278.70
1979.31    0.210   274.62
1980.31    0.195   269.95
1981.31    0.175   264.36
1982.31    0.150   257.13
1983.31    0.119   246.53
1984.31    0.082   226.98
1985.31    0.056   181.64
1986.31    0.073   128.33
1987.31    0.112   104.70
1988.31    0.151    93.41
1989.31    0.184    86.54
1990.31    0.213    81.69
1991.31    0.238    77.93
1992.31    0.260    74.85
1993.31    0.279    72.22
1994.31    0.296    69.91
1995.31    0.312    67.84
1996.31    0.325    65.95
1997.31    0.337    64.21
1998.31    0.348    62.58
1999.31    0.358    61.04
2000.31    0.367    59.58
2001.31    0.375    58.19
2002.31    0.382    56.85
2003.31    0.388    55.56
2004.31    0.394    54.31
2005.31    0.399    53.09
2006.31    0.404    51.91
2007.31    0.408    50.75
2008.31    0.412    49.61
2009.31    0.415    48.49
2010.31    0.418    47.38
2011.31    0.420    46.29
2012.31    0.423    45.22
2013.31    0.424    44.15
2014.31    0.426    43.09
2015.31    0.427    42.04
2016.31    0.428    40.99
2017.31    0.429    39.94
2018.31    0.429    38.90
2019.31    0.429    37.86
2020.31    0.429    36.82
2021.31    0.429    35.78
2022.31    0.428    34.74
2023.31    0.428    33.69
2024.31    0.427    32.65
2025.31    0.426    31.59
2026.31    0.425    30.53
2027.31    0.424    29.47
2028.31    0.422    28.40
2029.31    0.421    27.32
2030.31    0.419    26.23
2031.31    0.417    25.14
2032.31    0.415    24.03
2033.31    0.413    22.91
2034.31    0.411    21.79
2035.31    0.409    20.65
2036.31    0.406    19.49
2037.31    0.404    18.33
2038.31    0.402    17.15
2039.31    0.399    15.95
2040.31    0.396    14.74
2041.31    0.394    13.51
2042.31    0.391    12.27
2043.31    0.388    11.01
2044.31    0.385     9.73
2045.31    0.383     8.43
2046.31    0.380     7.11
2047.31    0.377     5.77
2048.31    0.374     4.41
2049.31    0.371     3.03
2050.31    0.368     1.63
2051.31    0.365     0.20
2052.31    0.362   358.75
2053.31    0.359   357.28
2054.31    0.356   355.78
2055.31    0.353   354.26
2056.31    0.350   352.71
2057.31    0.347   351.13
2058.31    0.344   349.53
2059.31    0.341   347.90
2060.31    0.338   346.24
2061.31    0.335   344.55
2062.31    0.333   342.84
2063.31    0.330   341.09
2064.31    0.327   339.31
2065.31    0.324   337.50
2066.31    0.321   335.67
2067.31    0.319   333.79
2068.31    0.316   331.89
2069.31    0.313   329.96
2070.31    0.310   327.98
2071.31    0.308   325.98
2072.31    0.305   323.94
2073.31    0.302   321.86
2074.31    0.299   319.74
2075.31    0.297   317.59
2076.31    0.294   315.39
2077.31    0.291   313.15
2078.31    0.288   310.86
2079.31    0.284   308.52
2080.31    0.281   306.12






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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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Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 15:10:13



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