Double Star Calculator - Orbit

Orbital Elements for HU371
WDS: HU371 WDS ID/Discoverer
P: 178.600 Orbital period (years)
a: 0.272 Semi-major axis (arcseconds)
i: 59.7 Inclination (degrees)
Ω: 136.9 Longitude of ascending node (degrees)
T: 1870.200 Epoch of periastron passage (year)
e: 0.31 Eccentricity
ω: 296.6 Longitude of periastron (degrees)
Start-Year: 1935.7 Year
End-Year: 2114.3 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HU371
Position: 213527.03+242707.9 Epoch-2000 right ascension and declination
WDS-ID: 21355+2427 WDS designation
Discoverer Code: HU371 Discover designation and components
ADS number: 15115 Aitken Double Star catalog
HD number: 205541 HD catalog number
Hipparcos number: 106605 Hipparcos catalog number
V1: 6.83 Magnitude of the primary
V2: 7.27 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2005 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: WSI2006b Reference

Double Star Orbit for HU371



WDS 6th Orbit including measures of HU371

-- 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 HU371
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.193   339.23
--------------------------
1935.70    0.171   225.17
1936.70    0.172   227.61
1937.70    0.173   230.02
1938.70    0.174   232.40
1939.70    0.175   234.75
1940.70    0.176   237.07
1941.70    0.178   239.35
1942.70    0.180   241.58
1943.70    0.182   243.77
1944.70    0.184   245.91
1945.70    0.186   248.01
1946.70    0.188   250.05
1947.70    0.191   252.03
1948.70    0.194   253.97
1949.70    0.196   255.85
1950.70    0.199   257.68
1951.70    0.202   259.46
1952.70    0.205   261.19
1953.70    0.208   262.87
1954.70    0.211   264.50
1955.70    0.214   266.08
1956.70    0.217   267.62
1957.70    0.221   269.11
1958.70    0.224   270.56
1959.70    0.227   271.96
1960.70    0.230   273.33
1961.70    0.234   274.66
1962.70    0.237   275.95
1963.70    0.240   277.21
1964.70    0.243   278.43
1965.70    0.247   279.62
1966.70    0.250   280.79
1967.70    0.253   281.92
1968.70    0.256   283.02
1969.70    0.259   284.10
1970.70    0.262   285.16
1971.70    0.265   286.19
1972.70    0.268   287.20
1973.70    0.270   288.18
1974.70    0.273   289.15
1975.70    0.276   290.10
1976.70    0.278   291.03
1977.70    0.281   291.95
1978.70    0.283   292.85
1979.70    0.285   293.73
1980.70    0.287   294.61
1981.70    0.289   295.47
1982.70    0.291   296.31
1983.70    0.293   297.15
1984.70    0.295   297.98
1985.70    0.296   298.80
1986.70    0.298   299.61
1987.70    0.299   300.41
1988.70    0.300   301.21
1989.70    0.301   302.00
1990.70    0.302   302.79
1991.70    0.302   303.58
1992.70    0.303   304.36
1993.70    0.303   305.14
1994.70    0.303   305.92
1995.70    0.303   306.69
1996.70    0.303   307.47
1997.70    0.303   308.25
1998.70    0.302   309.04
1999.70    0.301   309.82
2000.70    0.300   310.62
2001.70    0.299   311.41
2002.70    0.297   312.22
2003.70    0.296   313.03
2004.70    0.294   313.85
2005.70    0.292   314.69
2006.70    0.290   315.53
2007.70    0.287   316.39
2008.70    0.284   317.27
2009.70    0.281   318.16
2010.70    0.278   319.08
2011.70    0.275   320.01
2012.70    0.271   320.98
2013.70    0.267   321.97
2014.70    0.263   322.99
2015.70    0.258   324.04
2016.70    0.253   325.14
2017.70    0.248   326.28
2018.70    0.243   327.46
2019.70    0.237   328.70
2020.70    0.231   330.01
2021.70    0.225   331.38
2022.70    0.219   332.82
2023.70    0.213   334.36
2024.70    0.206   335.99
2025.70    0.199   337.74
2026.70    0.192   339.62
2027.70    0.184   341.64
2028.70    0.177   343.84
2029.70    0.169   346.23
2030.70    0.162   348.85
2031.70    0.154   351.72
2032.70    0.146   354.90
2033.70    0.139   358.43
2034.70    0.131     2.36
2035.70    0.124     6.74
2036.70    0.118    11.63
2037.70    0.112    17.06
2038.70    0.107    23.05
2039.70    0.102    29.60
2040.70    0.099    36.64
2041.70    0.097    44.04
2042.70    0.097    51.63
2043.70    0.098    59.19
2044.70    0.100    66.53
2045.70    0.103    73.48
2046.70    0.108    79.93
2047.70    0.113    85.83
2048.70    0.119    91.18
2049.70    0.125    96.00
2050.70    0.132   100.35
2051.70    0.139   104.27
2052.70    0.146   107.81
2053.70    0.152   111.04
2054.70    0.159   113.98
2055.70    0.166   116.69
2056.70    0.172   119.19
2057.70    0.178   121.51
2058.70    0.184   123.69
2059.70    0.190   125.74
2060.70    0.195   127.67
2061.70    0.200   129.51
2062.70    0.204   131.27
2063.70    0.208   132.96
2064.70    0.211   134.58
2065.70    0.215   136.16
2066.70    0.217   137.70
2067.70    0.220   139.19
2068.70    0.222   140.66
2069.70    0.223   142.11
2070.70    0.225   143.53
2071.70    0.226   144.94
2072.70    0.227   146.34
2073.70    0.227   147.73
2074.70    0.227   149.12
2075.70    0.227   150.50
2076.70    0.226   151.90
2077.70    0.226   153.29
2078.70    0.225   154.70
2079.70    0.224   156.12
2080.70    0.223   157.56
2081.70    0.221   159.01
2082.70    0.220   160.48
2083.70    0.218   161.97
2084.70    0.216   163.49
2085.70    0.214   165.04
2086.70    0.212   166.62
2087.70    0.210   168.22
2088.70    0.208   169.86
2089.70    0.205   171.54
2090.70    0.203   173.26
2091.70    0.201   175.01
2092.70    0.198   176.81
2093.70    0.196   178.64
2094.70    0.194   180.53
2095.70    0.192   182.45
2096.70    0.189   184.43
2097.70    0.187   186.45
2098.70    0.185   188.51
2099.70    0.183   190.62
2100.70    0.181   192.78
2101.70    0.179   194.98
2102.70    0.178   197.23
2103.70    0.176   199.51
2104.70    0.175   201.83
2105.70    0.174   204.19
2106.70    0.173   206.57
2107.70    0.172   208.98
2108.70    0.171   211.42
2109.70    0.171   213.86
2110.70    0.170   216.32
2111.70    0.170   218.79
2112.70    0.171   221.25
2113.70    0.171   223.70






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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.


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Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 18:27:26



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