Double Star Calculator - Orbit

Orbital Elements for HU481

WDS:	HU481	WDS ID/Discoverer
P:	119.500	Orbital period (years)
a:	0.464	Semi-major axis (arcseconds)
i:	146.8	Inclination (degrees)
Ω:	172.6	Longitude of ascending node (degrees)
T:	1997.950	Epoch of periastron passage (year)
e:	0.567	Eccentricity
ω:	160.5	Longitude of periastron (degrees)
Start-Year:	1965.25	Year
End-Year:	2084.75	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU481
Position:	162114.74+225918.8	Epoch-2000 right ascension and declination
WDS-ID:	16212+2259	WDS designation
Discoverer Code:	HU481	Discover designation and components
ADS number:	10017	Aitken Double Star catalog
HD number:	147442	HD catalog number
Hipparcos number:	80117	Hipparcos catalog number
V1:	8.21	Magnitude of the primary
V2:	10.04	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2009	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:	Hrt2010a	Reference

Double Star Orbit for HU481

WDS 6th Orbit including measures of HU481

-- 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 HU481

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.513   224.03
--------------------------
1965.25    0.612   163.32
1966.25    0.602   162.11
1967.25    0.592   160.85
1968.25    0.582   159.56
1969.25    0.571   158.21
1970.25    0.559   156.81
1971.25    0.547   155.35
1972.25    0.535   153.82
1973.25    0.522   152.22
1974.25    0.508   150.53
1975.25    0.494   148.75
1976.25    0.480   146.87
1977.25    0.465   144.86
1978.25    0.449   142.72
1979.25    0.433   140.42
1980.25    0.416   137.94
1981.25    0.399   135.26
1982.25    0.382   132.33
1983.25    0.364   129.11
1984.25    0.346   125.57
1985.25    0.328   121.62
1986.25    0.309   117.21
1987.25    0.291   112.23
1988.25    0.273   106.59
1989.25    0.255   100.17
1990.25    0.239    92.84
1991.25    0.224    84.49
1992.25    0.212    75.07
1993.25    0.202    64.60
1994.25    0.196    53.25
1995.25    0.192    41.33
1996.25    0.192    29.21
1997.25    0.195    17.25
1998.25    0.199     5.69
1999.25    0.204   354.67
2000.25    0.210   344.23
2001.25    0.216   334.36
2002.25    0.223   325.06
2003.25    0.230   316.32
2004.25    0.238   308.15
2005.25    0.247   300.53
2006.25    0.257   293.47
2007.25    0.267   286.94
2008.25    0.278   280.93
2009.25    0.290   275.40
2010.25    0.303   270.32
2011.25    0.316   265.64
2012.25    0.329   261.34
2013.25    0.342   257.37
2014.25    0.356   253.70
2015.25    0.369   250.30
2016.25    0.383   247.14
2017.25    0.397   244.20
2018.25    0.410   241.45
2019.25    0.423   238.88
2020.25    0.437   236.46
2021.25    0.449   234.18
2022.25    0.462   232.03
2023.25    0.475   229.99
2024.25    0.487   228.05
2025.25    0.499   226.21
2026.25    0.511   224.46
2027.25    0.522   222.78
2028.25    0.533   221.17
2029.25    0.544   219.63
2030.25    0.554   218.15
2031.25    0.564   216.72
2032.25    0.574   215.34
2033.25    0.584   214.01
2034.25    0.593   212.72
2035.25    0.602   211.47
2036.25    0.611   210.25
2037.25    0.619   209.07
2038.25    0.627   207.92
2039.25    0.634   206.79
2040.25    0.642   205.69
2041.25    0.649   204.62
2042.25    0.655   203.57
2043.25    0.662   202.54
2044.25    0.667   201.52
2045.25    0.673   200.53
2046.25    0.678   199.55
2047.25    0.683   198.59
2048.25    0.688   197.63
2049.25    0.692   196.70
2050.25    0.696   195.77
2051.25    0.700   194.85
2052.25    0.703   193.94
2053.25    0.706   193.04
2054.25    0.709   192.15
2055.25    0.711   191.26
2056.25    0.713   190.38
2057.25    0.714   189.50
2058.25    0.715   188.62
2059.25    0.716   187.75
2060.25    0.717   186.88
2061.25    0.717   186.01
2062.25    0.717   185.14
2063.25    0.716   184.27
2064.25    0.715   183.40
2065.25    0.714   182.52
2066.25    0.712   181.65
2067.25    0.710   180.76
2068.25    0.708   179.87
2069.25    0.705   178.98
2070.25    0.702   178.08
2071.25    0.699   177.17
2072.25    0.695   176.25
2073.25    0.691   175.31
2074.25    0.686   174.37
2075.25    0.681   173.41
2076.25    0.675   172.44
2077.25    0.669   171.45
2078.25    0.663   170.45
2079.25    0.656   169.42
2080.25    0.649   168.37
2081.25    0.642   167.30
2082.25    0.634   166.20
2083.25    0.625   165.07
2084.25    0.616   163.91

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 17:25:39