Double Star Calculator - Orbit

Orbital Elements for HU201
WDS: HU201 WDS ID/Discoverer
P: 128.900 Orbital period (years)
a: 0.542 Semi-major axis (arcseconds)
i: 44.1 Inclination (degrees)
Ω: 124.6 Longitude of ascending node (degrees)
T: 1932.970 Epoch of periastron passage (year)
e: 0.688 Eccentricity
ω: 160.0 Longitude of periastron (degrees)
Start-Year: 1960.55 Year
End-Year: 2089.45 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HU201
Position: 005207.81-131350.0 Epoch-2000 right ascension and declination
WDS-ID: 00521-1314 WDS designation
Discoverer Code: HU201 Discover designation and components
ADS number: 713 Aitken Double Star catalog
HD number: 5041 HD catalog number
Hipparcos number: 4066 Hipparcos catalog number
V1: 10.09 Magnitude of the primary
V2: 10.47 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Sca2013d Reference

Double Star Orbit for HU201



WDS 6th Orbit including measures of HU201

-- 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 HU201
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.778   126.78
--------------------------
1960.55    0.578    82.39
1961.55    0.593    83.64
1962.55    0.607    84.83
1963.55    0.622    85.96
1964.55    0.636    87.05
1965.55    0.649    88.08
1966.55    0.662    89.08
1967.55    0.675    90.03
1968.55    0.687    90.95
1969.55    0.699    91.84
1970.55    0.711    92.70
1971.55    0.722    93.54
1972.55    0.733    94.34
1973.55    0.744    95.13
1974.55    0.754    95.89
1975.55    0.764    96.63
1976.55    0.773    97.36
1977.55    0.782    98.06
1978.55    0.791    98.75
1979.55    0.799    99.43
1980.55    0.807   100.09
1981.55    0.815   100.74
1982.55    0.822   101.38
1983.55    0.829   102.01
1984.55    0.836   102.63
1985.55    0.842   103.23
1986.55    0.848   103.83
1987.55    0.853   104.42
1988.55    0.858   105.01
1989.55    0.863   105.58
1990.55    0.868   106.15
1991.55    0.872   106.72
1992.55    0.875   107.28
1993.55    0.879   107.84
1994.55    0.882   108.39
1995.55    0.885   108.93
1996.55    0.887   109.48
1997.55    0.889   110.02
1998.55    0.890   110.56
1999.55    0.892   111.10
2000.55    0.893   111.64
2001.55    0.893   112.17
2002.55    0.893   112.71
2003.55    0.893   113.25
2004.55    0.892   113.78
2005.55    0.891   114.32
2006.55    0.890   114.86
2007.55    0.888   115.40
2008.55    0.886   115.94
2009.55    0.884   116.49
2010.55    0.881   117.04
2011.55    0.877   117.59
2012.55    0.874   118.15
2013.55    0.870   118.71
2014.55    0.865   119.28
2015.55    0.860   119.86
2016.55    0.855   120.44
2017.55    0.849   121.03
2018.55    0.843   121.62
2019.55    0.836   122.23
2020.55    0.829   122.85
2021.55    0.822   123.47
2022.55    0.814   124.11
2023.55    0.805   124.76
2024.55    0.796   125.43
2025.55    0.787   126.11
2026.55    0.777   126.81
2027.55    0.767   127.53
2028.55    0.756   128.27
2029.55    0.744   129.03
2030.55    0.732   129.81
2031.55    0.720   130.62
2032.55    0.707   131.46
2033.55    0.693   132.34
2034.55    0.679   133.25
2035.55    0.664   134.20
2036.55    0.648   135.19
2037.55    0.632   136.23
2038.55    0.615   137.33
2039.55    0.597   138.50
2040.55    0.579   139.73
2041.55    0.560   141.05
2042.55    0.540   142.46
2043.55    0.520   143.99
2044.55    0.498   145.64
2045.55    0.476   147.44
2046.55    0.453   149.43
2047.55    0.429   151.63
2048.55    0.404   154.09
2049.55    0.378   156.89
2050.55    0.352   160.10
2051.55    0.325   163.85
2052.55    0.297   168.29
2053.55    0.269   173.66
2054.55    0.240   180.28
2055.55    0.213   188.62
2056.55    0.189   199.27
2057.55    0.168   212.85
2058.55    0.154   229.52
2059.55    0.149   248.34
2060.55    0.152   267.31
2061.55    0.161   284.78
2062.55    0.171   300.31
2063.55    0.179   314.29
2064.55    0.186   327.15
2065.55    0.192   339.16
2066.55    0.199   350.37
2067.55    0.208     0.71
2068.55    0.219    10.10
2069.55    0.232    18.53
2070.55    0.247    26.01
2071.55    0.263    32.62
2072.55    0.280    38.45
2073.55    0.297    43.59
2074.55    0.316    48.14
2075.55    0.334    52.19
2076.55    0.353    55.81
2077.55    0.372    59.07
2078.55    0.391    62.01
2079.55    0.409    64.68
2080.55    0.428    67.12
2081.55    0.446    69.37
2082.55    0.464    71.44
2083.55    0.481    73.35
2084.55    0.498    75.13
2085.55    0.515    76.80
2086.55    0.532    78.36
2087.55    0.548    79.83
2088.55    0.564    81.21






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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 14:44:18



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