Double Star Calculator - Orbit

Orbital Elements for HU120

WDS:	HU120	WDS ID/Discoverer
P:	197.600	Orbital period (years)
a:	0.475	Semi-major axis (arcseconds)
i:	45.6	Inclination (degrees)
Ω:	140.2	Longitude of ascending node (degrees)
T:	1983.190	Epoch of periastron passage (year)
e:	0.375	Eccentricity
ω:	82.5	Longitude of periastron (degrees)
Start-Year:	1926.2	Year
End-Year:	2123.8	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU120
Position:	084609.03-142204.1	Epoch-2000 right ascension and declination
WDS-ID:	08462-1422	WDS designation
Discoverer Code:	HU120	Discover designation and components
ADS number:	6989	Aitken Double Star catalog
HD number:	74861	HD catalog number
Hipparcos number:	43038	Hipparcos catalog number
V1:	9.19	Magnitude of the primary
V2:	9.21	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:		Flags
Ephemerides:		Ephemerides
Code:	Hrt2010a	Reference

Double Star Orbit for HU120

WDS 6th Orbit including measures of HU120

-- 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 HU120

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.485   337.16
--------------------------
1926.20    0.457    93.56
1927.20    0.457    94.83
1928.20    0.458    96.11
1929.20    0.458    97.38
1930.20    0.458    98.65
1931.20    0.458    99.93
1932.20    0.457   101.20
1933.20    0.457   102.47
1934.20    0.457   103.75
1935.20    0.457   105.03
1936.20    0.456   106.31
1937.20    0.455   107.59
1938.20    0.455   108.88
1939.20    0.454   110.17
1940.20    0.453   111.47
1941.20    0.452   112.77
1942.20    0.450   114.08
1943.20    0.449   115.40
1944.20    0.447   116.73
1945.20    0.445   118.07
1946.20    0.443   119.42
1947.20    0.441   120.78
1948.20    0.439   122.16
1949.20    0.436   123.56
1950.20    0.433   124.97
1951.20    0.430   126.40
1952.20    0.426   127.86
1953.20    0.422   129.34
1954.20    0.418   130.85
1955.20    0.414   132.38
1956.20    0.409   133.96
1957.20    0.404   135.57
1958.20    0.399   137.22
1959.20    0.394   138.92
1960.20    0.388   140.66
1961.20    0.381   142.47
1962.20    0.375   144.33
1963.20    0.368   146.27
1964.20    0.360   148.28
1965.20    0.352   150.39
1966.20    0.344   152.58
1967.20    0.336   154.89
1968.20    0.327   157.31
1969.20    0.318   159.87
1970.20    0.309   162.58
1971.20    0.300   165.46
1972.20    0.290   168.52
1973.20    0.281   171.79
1974.20    0.271   175.29
1975.20    0.262   179.05
1976.20    0.253   183.08
1977.20    0.244   187.40
1978.20    0.236   192.04
1979.20    0.228   196.99
1980.20    0.222   202.25
1981.20    0.217   207.80
1982.20    0.212   213.60
1983.20    0.210   219.60
1984.20    0.208   225.72
1985.20    0.208   231.88
1986.20    0.210   237.97
1987.20    0.213   243.92
1988.20    0.218   249.66
1989.20    0.224   255.13
1990.20    0.231   260.30
1991.20    0.238   265.15
1992.20    0.247   269.68
1993.20    0.256   273.89
1994.20    0.266   277.81
1995.20    0.276   281.45
1996.20    0.286   284.84
1997.20    0.296   287.99
1998.20    0.306   290.94
1999.20    0.316   293.70
2000.20    0.326   296.29
2001.20    0.336   298.73
2002.20    0.345   301.03
2003.20    0.354   303.21
2004.20    0.363   305.28
2005.20    0.372   307.26
2006.20    0.380   309.14
2007.20    0.389   310.94
2008.20    0.396   312.67
2009.20    0.404   314.34
2010.20    0.411   315.95
2011.20    0.418   317.50
2012.20    0.424   319.00
2013.20    0.430   320.46
2014.20    0.436   321.88
2015.20    0.442   323.27
2016.20    0.447   324.62
2017.20    0.452   325.94
2018.20    0.457   327.23
2019.20    0.461   328.50
2020.20    0.465   329.74
2021.20    0.469   330.96
2022.20    0.472   332.17
2023.20    0.476   333.35
2024.20    0.479   334.53
2025.20    0.482   335.68
2026.20    0.484   336.82
2027.20    0.487   337.95
2028.20    0.489   339.08
2029.20    0.491   340.19
2030.20    0.493   341.29
2031.20    0.494   342.38
2032.20    0.496   343.47
2033.20    0.497   344.55
2034.20    0.498   345.63
2035.20    0.499   346.70
2036.20    0.500   347.77
2037.20    0.500   348.84
2038.20    0.501   349.90
2039.20    0.501   350.96
2040.20    0.501   352.02
2041.20    0.502   353.08
2042.20    0.502   354.14
2043.20    0.501   355.20
2044.20    0.501   356.26
2045.20    0.501   357.32
2046.20    0.500   358.39
2047.20    0.500   359.45
2048.20    0.499     0.52
2049.20    0.499     1.59
2050.20    0.498     2.67
2051.20    0.497     3.74
2052.20    0.496     4.82
2053.20    0.495     5.91
2054.20    0.494     7.00
2055.20    0.493     8.09
2056.20    0.492     9.19
2057.20    0.491    10.29
2058.20    0.490    11.40
2059.20    0.489    12.51
2060.20    0.487    13.63
2061.20    0.486    14.76
2062.20    0.485    15.89
2063.20    0.484    17.02
2064.20    0.482    18.17
2065.20    0.481    19.32
2066.20    0.480    20.47
2067.20    0.478    21.63
2068.20    0.477    22.80
2069.20    0.476    23.97
2070.20    0.475    25.16
2071.20    0.473    26.34
2072.20    0.472    27.54
2073.20    0.471    28.74
2074.20    0.470    29.94
2075.20    0.468    31.15
2076.20    0.467    32.37
2077.20    0.466    33.60
2078.20    0.465    34.83
2079.20    0.464    36.06
2080.20    0.463    37.31
2081.20    0.462    38.55
2082.20    0.461    39.81
2083.20    0.460    41.07
2084.20    0.459    42.33
2085.20    0.458    43.60
2086.20    0.457    44.87
2087.20    0.457    46.14
2088.20    0.456    47.43
2089.20    0.455    48.71
2090.20    0.455    50.00
2091.20    0.454    51.29
2092.20    0.454    52.58
2093.20    0.453    53.88
2094.20    0.453    55.18
2095.20    0.453    56.48
2096.20    0.452    57.78
2097.20    0.452    59.09
2098.20    0.452    60.39
2099.20    0.452    61.70
2100.20    0.452    63.00
2101.20    0.452    64.31
2102.20    0.452    65.62
2103.20    0.452    66.93
2104.20    0.452    68.23
2105.20    0.452    69.54
2106.20    0.452    70.85
2107.20    0.452    72.15
2108.20    0.452    73.45
2109.20    0.453    74.76
2110.20    0.453    76.06
2111.20    0.453    77.36
2112.20    0.454    78.65
2113.20    0.454    79.95
2114.20    0.454    81.24
2115.20    0.455    82.53
2116.20    0.455    83.82
2117.20    0.455    85.11
2118.20    0.456    86.39
2119.20    0.456    87.68
2120.20    0.456    88.96
2121.20    0.457    90.24
2122.20    0.457    91.52
2123.20    0.457    92.79

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 16:10:47