Double Star Calculator - Orbit

Orbital Elements for HU66AB
WDS: HU66AB WDS ID/Discoverer
P: 300.000 Orbital period (years)
a: 0.392 Semi-major axis (arcseconds)
i: 123.2 Inclination (degrees)
Ω: 59.7 Longitude of ascending node (degrees)
T: 2022.000 Epoch of periastron passage (year)
e: 0.546 Eccentricity
ω: 269.6 Longitude of periastron (degrees)
Start-Year: 1875.0 Year
End-Year: 2175.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HU66AB
Position: 182518.20+484542.5 Epoch-2000 right ascension and declination
WDS-ID: 18253+4846 WDS designation
Discoverer Code: HU66AB Discover designation and components
ADS number: 11344 Aitken Double Star catalog
HD number: 170109 HD catalog number
Hipparcos number: 90284 Hipparcos catalog number
V1: 7.90 Magnitude of the primary
V2: 8.40 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1995 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: USN2002 Reference

Double Star Orbit for HU66AB



WDS 6th Orbit including measures of HU66AB

-- 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 HU66AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.114   114.41
--------------------------
1875.00    0.332   328.13
1876.00    0.332   327.36
1877.00    0.332   326.59
1878.00    0.332   325.82
1879.00    0.332   325.05
1880.00    0.332   324.29
1881.00    0.332   323.52
1882.00    0.332   322.76
1883.00    0.333   321.99
1884.00    0.333   321.23
1885.00    0.333   320.46
1886.00    0.333   319.70
1887.00    0.334   318.94
1888.00    0.334   318.18
1889.00    0.334   317.42
1890.00    0.334   316.66
1891.00    0.335   315.91
1892.00    0.335   315.15
1893.00    0.335   314.40
1894.00    0.336   313.65
1895.00    0.336   312.90
1896.00    0.337   312.15
1897.00    0.337   311.41
1898.00    0.337   310.66
1899.00    0.338   309.92
1900.00    0.338   309.18
1901.00    0.339   308.44
1902.00    0.339   307.70
1903.00    0.340   306.97
1904.00    0.340   306.24
1905.00    0.341   305.51
1906.00    0.341   304.78
1907.00    0.342   304.06
1908.00    0.342   303.33
1909.00    0.343   302.61
1910.00    0.343   301.89
1911.00    0.344   301.18
1912.00    0.345   300.46
1913.00    0.345   299.75
1914.00    0.346   299.04
1915.00    0.346   298.34
1916.00    0.347   297.63
1917.00    0.347   296.93
1918.00    0.348   296.23
1919.00    0.349   295.53
1920.00    0.349   294.84
1921.00    0.350   294.15
1922.00    0.350   293.46
1923.00    0.351   292.77
1924.00    0.352   292.08
1925.00    0.352   291.40
1926.00    0.353   290.72
1927.00    0.353   290.04
1928.00    0.354   289.36
1929.00    0.354   288.69
1930.00    0.355   288.02
1931.00    0.355   287.35
1932.00    0.356   286.68
1933.00    0.356   286.01
1934.00    0.357   285.35
1935.00    0.357   284.68
1936.00    0.358   284.02
1937.00    0.358   283.36
1938.00    0.359   282.70
1939.00    0.359   282.05
1940.00    0.359   281.39
1941.00    0.360   280.74
1942.00    0.360   280.08
1943.00    0.360   279.43
1944.00    0.361   278.78
1945.00    0.361   278.13
1946.00    0.361   277.48
1947.00    0.361   276.83
1948.00    0.361   276.18
1949.00    0.361   275.54
1950.00    0.362   274.89
1951.00    0.362   274.24
1952.00    0.362   273.60
1953.00    0.362   272.95
1954.00    0.361   272.30
1955.00    0.361   271.65
1956.00    0.361   271.00
1957.00    0.361   270.36
1958.00    0.360   269.71
1959.00    0.360   269.05
1960.00    0.360   268.40
1961.00    0.359   267.75
1962.00    0.359   267.09
1963.00    0.358   266.43
1964.00    0.357   265.77
1965.00    0.357   265.11
1966.00    0.356   264.44
1967.00    0.355   263.77
1968.00    0.354   263.10
1969.00    0.353   262.42
1970.00    0.352   261.74
1971.00    0.351   261.05
1972.00    0.349   260.36
1973.00    0.348   259.67
1974.00    0.346   258.96
1975.00    0.345   258.25
1976.00    0.343   257.54
1977.00    0.341   256.82
1978.00    0.339   256.08
1979.00    0.337   255.34
1980.00    0.335   254.59
1981.00    0.332   253.83
1982.00    0.330   253.06
1983.00    0.327   252.28
1984.00    0.325   251.48
1985.00    0.322   250.67
1986.00    0.319   249.85
1987.00    0.315   249.01
1988.00    0.312   248.15
1989.00    0.308   247.27
1990.00    0.304   246.37
1991.00    0.300   245.44
1992.00    0.296   244.49
1993.00    0.292   243.51
1994.00    0.287   242.51
1995.00    0.282   241.46
1996.00    0.277   240.38
1997.00    0.272   239.26
1998.00    0.266   238.09
1999.00    0.261   236.88
2000.00    0.255   235.60
2001.00    0.248   234.26
2002.00    0.242   232.85
2003.00    0.235   231.36
2004.00    0.227   229.77
2005.00    0.220   228.08
2006.00    0.212   226.27
2007.00    0.204   224.32
2008.00    0.196   222.21
2009.00    0.188   219.91
2010.00    0.179   217.39
2011.00    0.170   214.60
2012.00    0.161   211.52
2013.00    0.152   208.07
2014.00    0.143   204.19
2015.00    0.135   199.81
2016.00    0.126   194.84
2017.00    0.119   189.19
2018.00    0.112   182.81
2019.00    0.106   175.65
2020.00    0.101   167.76
2021.00    0.099   159.27
2022.00    0.097   150.43
2023.00    0.098   141.57
2024.00    0.101   133.01
2025.00    0.105   125.02
2026.00    0.111   117.75
2027.00    0.118   111.26
2028.00    0.125   105.52
2029.00    0.134   100.46
2030.00    0.142    96.00
2031.00    0.151    92.06
2032.00    0.160    88.55
2033.00    0.169    85.42
2034.00    0.178    82.60
2035.00    0.186    80.05
2036.00    0.195    77.73
2037.00    0.203    75.59
2038.00    0.211    73.62
2039.00    0.219    71.80
2040.00    0.227    70.10
2041.00    0.234    68.50
2042.00    0.241    67.00
2043.00    0.248    65.59
2044.00    0.254    64.24
2045.00    0.260    62.96
2046.00    0.266    61.74
2047.00    0.272    60.58
2048.00    0.277    59.46
2049.00    0.283    58.38
2050.00    0.287    57.34
2051.00    0.292    56.33
2052.00    0.297    55.35
2053.00    0.301    54.41
2054.00    0.305    53.48
2055.00    0.309    52.59
2056.00    0.313    51.71
2057.00    0.316    50.86
2058.00    0.320    50.02
2059.00    0.323    49.20
2060.00    0.326    48.39
2061.00    0.329    47.60
2062.00    0.331    46.83
2063.00    0.334    46.06
2064.00    0.336    45.31
2065.00    0.339    44.57
2066.00    0.341    43.83
2067.00    0.343    43.11
2068.00    0.345    42.39
2069.00    0.347    41.68
2070.00    0.348    40.98
2071.00    0.350    40.29
2072.00    0.351    39.60
2073.00    0.353    38.92
2074.00    0.354    38.24
2075.00    0.355    37.57
2076.00    0.356    36.90
2077.00    0.357    36.23
2078.00    0.358    35.57
2079.00    0.359    34.92
2080.00    0.360    34.26
2081.00    0.361    33.61
2082.00    0.361    32.96
2083.00    0.362    32.31
2084.00    0.362    31.67
2085.00    0.363    31.03
2086.00    0.363    30.38
2087.00    0.364    29.74
2088.00    0.364    29.10
2089.00    0.364    28.47
2090.00    0.364    27.83
2091.00    0.364    27.19
2092.00    0.365    26.55
2093.00    0.365    25.92
2094.00    0.365    25.28
2095.00    0.365    24.64
2096.00    0.364    24.01
2097.00    0.364    23.37
2098.00    0.364    22.73
2099.00    0.364    22.10
2100.00    0.364    21.46
2101.00    0.364    20.82
2102.00    0.363    20.18
2103.00    0.363    19.54
2104.00    0.363    18.89
2105.00    0.362    18.25
2106.00    0.362    17.60
2107.00    0.361    16.96
2108.00    0.361    16.31
2109.00    0.361    15.66
2110.00    0.360    15.01
2111.00    0.360    14.35
2112.00    0.359    13.70
2113.00    0.359    13.04
2114.00    0.358    12.38
2115.00    0.358    11.72
2116.00    0.357    11.06
2117.00    0.356    10.39
2118.00    0.356     9.73
2119.00    0.355     9.06
2120.00    0.355     8.39
2121.00    0.354     7.71
2122.00    0.353     7.04
2123.00    0.353     6.36
2124.00    0.352     5.68
2125.00    0.352     4.99
2126.00    0.351     4.31
2127.00    0.350     3.62
2128.00    0.350     2.93
2129.00    0.349     2.24
2130.00    0.348     1.54
2131.00    0.348     0.84
2132.00    0.347     0.14
2133.00    0.347   359.44
2134.00    0.346   358.74
2135.00    0.345   358.03
2136.00    0.345   357.32
2137.00    0.344   356.60
2138.00    0.344   355.89
2139.00    0.343   355.17
2140.00    0.342   354.45
2141.00    0.342   353.73
2142.00    0.341   353.00
2143.00    0.341   352.28
2144.00    0.340   351.55
2145.00    0.340   350.82
2146.00    0.339   350.08
2147.00    0.339   349.35
2148.00    0.338   348.61
2149.00    0.338   347.87
2150.00    0.337   347.13
2151.00    0.337   346.38
2152.00    0.337   345.64
2153.00    0.336   344.89
2154.00    0.336   344.14
2155.00    0.335   343.39
2156.00    0.335   342.63
2157.00    0.335   341.88
2158.00    0.334   341.12
2159.00    0.334   340.37
2160.00    0.334   339.61
2161.00    0.334   338.85
2162.00    0.333   338.09
2163.00    0.333   337.32
2164.00    0.333   336.56
2165.00    0.333   335.80
2166.00    0.332   335.03
2167.00    0.332   334.27
2168.00    0.332   333.50
2169.00    0.332   332.73
2170.00    0.332   331.97
2171.00    0.332   331.20
2172.00    0.332   330.43
2173.00    0.332   329.66
2174.00    0.332   328.89






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 17:51:40



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