Double Star Calculator - Orbit

Orbital Elements for VOU31AB

WDS:	VOU31AB	WDS ID/Discoverer
P:	133.300	Orbital period (years)
a:	0.826	Semi-major axis (arcseconds)
i:	121.4	Inclination (degrees)
Ω:	94.3	Longitude of ascending node (degrees)
T:	2027.400	Epoch of periastron passage (year)
e:	0.8023	Eccentricity
ω:	41.4	Longitude of periastron (degrees)
Start-Year:	1958.35	Year
End-Year:	2091.65	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for VOU31AB
Position:	140349.40-602222.9	Epoch-2000 right ascension and declination
WDS-ID:	14038-6022	WDS designation
Discoverer Code:	VOU31AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	122451	HD catalog number
Hipparcos number:	68702	Hipparcos catalog number
V1:	0.58	Magnitude of the primary
V2:	3.95	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2024	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:	Tok2024e	Reference

Double Star Orbit for VOU31AB

WDS 6th Orbit including measures of VOU31AB

-- 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 VOU31AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.177    90.99
--------------------------
1958.35    1.241   250.53
1959.35    1.236   250.16
1960.35    1.231   249.78
1961.35    1.225   249.40
1962.35    1.219   249.02
1963.35    1.213   248.63
1964.35    1.206   248.24
1965.35    1.199   247.84
1966.35    1.191   247.44
1967.35    1.183   247.03
1968.35    1.174   246.62
1969.35    1.165   246.20
1970.35    1.156   245.78
1971.35    1.146   245.34
1972.35    1.136   244.90
1973.35    1.126   244.46
1974.35    1.115   244.00
1975.35    1.104   243.53
1976.35    1.092   243.06
1977.35    1.080   242.57
1978.35    1.068   242.08
1979.35    1.055   241.57
1980.35    1.042   241.04
1981.35    1.028   240.51
1982.35    1.014   239.96
1983.35    1.000   239.39
1984.35    0.985   238.81
1985.35    0.970   238.21
1986.35    0.954   237.59
1987.35    0.938   236.95
1988.35    0.922   236.29
1989.35    0.905   235.60
1990.35    0.888   234.89
1991.35    0.871   234.15
1992.35    0.853   233.38
1993.35    0.835   232.58
1994.35    0.816   231.73
1995.35    0.797   230.85
1996.35    0.778   229.93
1997.35    0.758   228.96
1998.35    0.738   227.93
1999.35    0.718   226.85
2000.35    0.697   225.71
2001.35    0.676   224.49
2002.35    0.654   223.19
2003.35    0.632   221.81
2004.35    0.610   220.32
2005.35    0.588   218.72
2006.35    0.565   217.00
2007.35    0.542   215.12
2008.35    0.519   213.08
2009.35    0.495   210.85
2010.35    0.472   208.40
2011.35    0.448   205.69
2012.35    0.425   202.69
2013.35    0.402   199.34
2014.35    0.379   195.58
2015.35    0.357   191.34
2016.35    0.336   186.56
2017.35    0.315   181.14
2018.35    0.296   175.00
2019.35    0.279   168.06
2020.35    0.264   160.27
2021.35    0.251   151.63
2022.35    0.241   142.14
2023.35    0.232   131.87
2024.35    0.222   120.78
2025.35    0.209   108.50
2026.35    0.182    93.65
2027.35    0.137    71.18
2028.35    0.098    26.17
2029.35    0.126   334.72
2030.35    0.193   310.92
2031.35    0.264   299.70
2032.35    0.330   293.15
2033.35    0.392   288.73
2034.35    0.449   285.48
2035.35    0.501   282.93
2036.35    0.550   280.85
2037.35    0.595   279.10
2038.35    0.637   277.59
2039.35    0.677   276.26
2040.35    0.714   275.07
2041.35    0.749   274.00
2042.35    0.782   273.02
2043.35    0.813   272.12
2044.35    0.843   271.29
2045.35    0.871   270.51
2046.35    0.897   269.77
2047.35    0.922   269.08
2048.35    0.946   268.43
2049.35    0.969   267.80
2050.35    0.990   267.20
2051.35    1.010   266.63
2052.35    1.030   266.08
2053.35    1.048   265.55
2054.35    1.065   265.04
2055.35    1.082   264.54
2056.35    1.097   264.05
2057.35    1.112   263.59
2058.35    1.126   263.13
2059.35    1.139   262.68
2060.35    1.151   262.24
2061.35    1.163   261.82
2062.35    1.174   261.40
2063.35    1.184   260.98
2064.35    1.193   260.58
2065.35    1.202   260.18
2066.35    1.210   259.78
2067.35    1.218   259.40
2068.35    1.225   259.01
2069.35    1.231   258.63
2070.35    1.237   258.26
2071.35    1.242   257.88
2072.35    1.247   257.51
2073.35    1.251   257.15
2074.35    1.255   256.78
2075.35    1.258   256.42
2076.35    1.261   256.06
2077.35    1.263   255.70
2078.35    1.264   255.34
2079.35    1.265   254.98
2080.35    1.266   254.62
2081.35    1.266   254.26
2082.35    1.266   253.91
2083.35    1.265   253.55
2084.35    1.264   253.19
2085.35    1.262   252.83
2086.35    1.260   252.47
2087.35    1.257   252.11
2088.35    1.254   251.74
2089.35    1.251   251.38
2090.35    1.247   251.01
2091.35    1.243   250.64

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 17:02:12