Double Star Calculator - Orbit

Orbital Elements for HU400
WDS: HU400 WDS ID/Discoverer
P: 173.660 Orbital period (years)
a: 0.409 Semi-major axis (arcseconds)
i: 130.8 Inclination (degrees)
Ω: 46.2 Longitude of ascending node (degrees)
T: 1881.160 Epoch of periastron passage (year)
e: 0.31 Eccentricity
ω: 76.3 Longitude of periastron (degrees)
Start-Year: 1938.17 Year
End-Year: 2111.83 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HU400
Position: 231737.32+181817.5 Epoch-2000 right ascension and declination
WDS-ID: 23176+1818 WDS designation
Discoverer Code: HU400 Discover designation and components
ADS number: 16650 Aitken Double Star catalog
HD number: 219675 HD catalog number
Hipparcos number: 115011 Hipparcos catalog number
V1: 7.01 Magnitude of the primary
V2: 8.80 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2000 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: Sca2002d Reference

Double Star Orbit for HU400



WDS 6th Orbit including measures of HU400

-- 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 HU400
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.368    58.09
--------------------------
1938.17    0.430   197.39
1939.17    0.429   196.23
1940.17    0.428   195.05
1941.17    0.426   193.87
1942.17    0.424   192.68
1943.17    0.422   191.48
1944.17    0.420   190.26
1945.17    0.418   189.04
1946.17    0.416   187.80
1947.17    0.414   186.55
1948.17    0.412   185.29
1949.17    0.409   184.01
1950.17    0.407   182.72
1951.17    0.404   181.41
1952.17    0.402   180.08
1953.17    0.399   178.74
1954.17    0.397   177.38
1955.17    0.394   176.01
1956.17    0.392   174.61
1957.17    0.389   173.20
1958.17    0.387   171.77
1959.17    0.384   170.32
1960.17    0.381   168.84
1961.17    0.379   167.35
1962.17    0.376   165.84
1963.17    0.374   164.31
1964.17    0.372   162.76
1965.17    0.369   161.19
1966.17    0.367   159.60
1967.17    0.365   157.99
1968.17    0.363   156.36
1969.17    0.361   154.72
1970.17    0.359   153.05
1971.17    0.357   151.37
1972.17    0.355   149.67
1973.17    0.353   147.95
1974.17    0.352   146.22
1975.17    0.351   144.47
1976.17    0.349   142.71
1977.17    0.348   140.94
1978.17    0.347   139.16
1979.17    0.346   137.37
1980.17    0.345   135.57
1981.17    0.345   133.76
1982.17    0.344   131.94
1983.17    0.344   130.12
1984.17    0.344   128.30
1985.17    0.344   126.48
1986.17    0.344   124.65
1987.17    0.344   122.83
1988.17    0.344   121.01
1989.17    0.345   119.19
1990.17    0.345   117.38
1991.17    0.346   115.57
1992.17    0.346   113.77
1993.17    0.347   111.98
1994.17    0.348   110.20
1995.17    0.349   108.43
1996.17    0.350   106.67
1997.17    0.352   104.92
1998.17    0.353   103.18
1999.17    0.354   101.46
2000.17    0.356    99.75
2001.17    0.357    98.05
2002.17    0.358    96.37
2003.17    0.360    94.70
2004.17    0.361    93.04
2005.17    0.363    91.40
2006.17    0.364    89.77
2007.17    0.366    88.15
2008.17    0.367    86.54
2009.17    0.368    84.95
2010.17    0.369    83.36
2011.17    0.371    81.79
2012.17    0.372    80.23
2013.17    0.373    78.67
2014.17    0.373    77.12
2015.17    0.374    75.58
2016.17    0.375    74.04
2017.17    0.375    72.51
2018.17    0.375    70.98
2019.17    0.375    69.45
2020.17    0.375    67.92
2021.17    0.375    66.39
2022.17    0.374    64.85
2023.17    0.373    63.31
2024.17    0.372    61.75
2025.17    0.370    60.19
2026.17    0.369    58.61
2027.17    0.366    57.02
2028.17    0.364    55.40
2029.17    0.361    53.76
2030.17    0.358    52.10
2031.17    0.354    50.40
2032.17    0.350    48.66
2033.17    0.346    46.89
2034.17    0.341    45.07
2035.17    0.336    43.19
2036.17    0.331    41.25
2037.17    0.325    39.25
2038.17    0.318    37.17
2039.17    0.312    34.99
2040.17    0.304    32.72
2041.17    0.297    30.34
2042.17    0.289    27.83
2043.17    0.281    25.17
2044.17    0.272    22.35
2045.17    0.264    19.35
2046.17    0.255    16.15
2047.17    0.246    12.71
2048.17    0.237     9.02
2049.17    0.229     5.05
2050.17    0.221     0.78
2051.17    0.213   356.19
2052.17    0.206   351.27
2053.17    0.199   346.01
2054.17    0.194   340.43
2055.17    0.190   334.58
2056.17    0.187   328.51
2057.17    0.186   322.30
2058.17    0.186   316.04
2059.17    0.187   309.83
2060.17    0.190   303.77
2061.17    0.194   297.94
2062.17    0.200   292.39
2063.17    0.206   287.17
2064.17    0.214   282.29
2065.17    0.222   277.75
2066.17    0.231   273.54
2067.17    0.240   269.64
2068.17    0.249   266.03
2069.17    0.259   262.69
2070.17    0.268   259.58
2071.17    0.278   256.69
2072.17    0.287   253.99
2073.17    0.297   251.47
2074.17    0.306   249.09
2075.17    0.315   246.86
2076.17    0.324   244.74
2077.17    0.332   242.74
2078.17    0.340   240.83
2079.17    0.348   239.01
2080.17    0.355   237.26
2081.17    0.362   235.59
2082.17    0.369   233.98
2083.17    0.375   232.42
2084.17    0.381   230.92
2085.17    0.387   229.46
2086.17    0.392   228.04
2087.17    0.397   226.66
2088.17    0.402   225.31
2089.17    0.406   223.99
2090.17    0.410   222.70
2091.17    0.414   221.43
2092.17    0.417   220.19
2093.17    0.420   218.96
2094.17    0.423   217.75
2095.17    0.425   216.55
2096.17    0.428   215.36
2097.17    0.429   214.19
2098.17    0.431   213.03
2099.17    0.432   211.87
2100.17    0.433   210.72
2101.17    0.434   209.58
2102.17    0.435   208.44
2103.17    0.435   207.30
2104.17    0.435   206.16
2105.17    0.435   205.03
2106.17    0.435   203.89
2107.17    0.435   202.75
2108.17    0.434   201.61
2109.17    0.433   200.46
2110.17    0.432   199.32
2111.17    0.431   198.16






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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 18:49:29



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