Double Star Calculator - Orbit

Orbital Elements for VOU44AB
WDS: VOU44AB WDS ID/Discoverer
P: 108.900 Orbital period (years)
a: 0.219 Semi-major axis (arcseconds)
i: 48.5 Inclination (degrees)
Ω: 217.9 Longitude of ascending node (degrees)
T: 1956.500 Epoch of periastron passage (year)
e: 0.272 Eccentricity
ω: -64.3 Longitude of periastron (degrees)
Start-Year: 1970.55 Year
End-Year: 2079.45 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for VOU44AB
Position: 164012.19-275950.4 Epoch-2000 right ascension and declination
WDS-ID: 16402-2800 WDS designation
Discoverer Code: VOU44AB Discover designation and components
ADS number: 10143 Aitken Double Star catalog
HD number: 150148 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.19 Magnitude of the primary
V2: 10.61 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Tok2023a Reference

Double Star Orbit for VOU44AB



WDS 6th Orbit including measures of VOU44AB

-- 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 VOU44AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.241    14.94
--------------------------
1970.55    0.187   224.78
1971.55    0.189   227.63
1972.55    0.191   230.44
1973.55    0.191   233.21
1974.55    0.192   235.96
1975.55    0.192   238.71
1976.55    0.192   241.45
1977.55    0.191   244.21
1978.55    0.191   246.98
1979.55    0.190   249.78
1980.55    0.189   252.60
1981.55    0.187   255.47
1982.55    0.186   258.37
1983.55    0.185   261.31
1984.55    0.183   264.29
1985.55    0.182   267.32
1986.55    0.181   270.39
1987.55    0.180   273.50
1988.55    0.179   276.65
1989.55    0.178   279.84
1990.55    0.177   283.06
1991.55    0.176   286.30
1992.55    0.176   289.56
1993.55    0.176   292.83
1994.55    0.176   296.10
1995.55    0.176   299.37
1996.55    0.177   302.62
1997.55    0.177   305.84
1998.55    0.178   309.04
1999.55    0.180   312.19
2000.55    0.181   315.30
2001.55    0.183   318.36
2002.55    0.185   321.36
2003.55    0.187   324.30
2004.55    0.189   327.17
2005.55    0.191   329.97
2006.55    0.194   332.70
2007.55    0.196   335.36
2008.55    0.199   337.95
2009.55    0.202   340.48
2010.55    0.204   342.93
2011.55    0.207   345.31
2012.55    0.210   347.64
2013.55    0.213   349.90
2014.55    0.216   352.09
2015.55    0.219   354.24
2016.55    0.221   356.33
2017.55    0.224   358.37
2018.55    0.227     0.36
2019.55    0.229     2.31
2020.55    0.231     4.22
2021.55    0.233     6.09
2022.55    0.235     7.93
2023.55    0.237     9.74
2024.55    0.239    11.52
2025.55    0.240    13.28
2026.55    0.241    15.03
2027.55    0.242    16.75
2028.55    0.243    18.47
2029.55    0.244    20.17
2030.55    0.244    21.88
2031.55    0.244    23.58
2032.55    0.243    25.29
2033.55    0.242    27.00
2034.55    0.241    28.73
2035.55    0.240    30.48
2036.55    0.238    32.25
2037.55    0.236    34.05
2038.55    0.233    35.89
2039.55    0.230    37.78
2040.55    0.227    39.71
2041.55    0.223    41.71
2042.55    0.219    43.79
2043.55    0.214    45.94
2044.55    0.209    48.20
2045.55    0.204    50.58
2046.55    0.198    53.09
2047.55    0.191    55.76
2048.55    0.185    58.62
2049.55    0.178    61.70
2050.55    0.171    65.03
2051.55    0.163    68.66
2052.55    0.156    72.64
2053.55    0.148    77.03
2054.55    0.140    81.90
2055.55    0.133    87.30
2056.55    0.126    93.30
2057.55    0.120    99.95
2058.55    0.115   107.24
2059.55    0.111   115.15
2060.55    0.109   123.53
2061.55    0.108   132.20
2062.55    0.108   140.90
2063.55    0.110   149.40
2064.55    0.114   157.47
2065.55    0.118   164.98
2066.55    0.124   171.88
2067.55    0.130   178.16
2068.55    0.136   183.87
2069.55    0.143   189.07
2070.55    0.149   193.82
2071.55    0.155   198.18
2072.55    0.161   202.22
2073.55    0.166   205.99
2074.55    0.171   209.54
2075.55    0.176   212.90
2076.55    0.179   216.10
2077.55    0.183   219.18
2078.55    0.185   222.17






Disclaimer
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 17:29:47



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