Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:36:21

Orbital Elements for HU91BC
WDS: HU91BC WDS ID/Discoverer
P: 240.000 Orbital period (years)
a: 0.143 Semi-major axis (arcseconds)
i: 99.0 Inclination (degrees)
Ω: 208.0 Longitude of ascending node (degrees)
T: 1985.000 Epoch of periastron passage (year)
e: 0.3 Eccentricity
ω: 110.0 Longitude of periastron (degrees)
Start-Year: 1905.0 Year
End-Year: 2145.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU91BC
Position: 224304.32+471007.5 Epoch-2000 right ascension and declination
WDS-ID: 22431+4710 WDS designation
Discoverer Code: HU91BC Discover designation and components
ADS number: 16214 Aitken Double Star catalog
HD number: 215242 HD catalog number
Hipparcos number: 112170 Hipparcos catalog number
V1: 8.0 Magnitude of the primary
V2: 10.0 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2000 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for HU91BC



WDS 6th Orbit including measures of HU91BC

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of HU91BC
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.122     24.0
-------------------------
1905.0     0.143    214.1
1906.0     0.144    213.9
1907.0     0.145    213.7
1908.0     0.146    213.4
1909.0     0.147    213.2
1910.0     0.147    213.0
1911.0     0.148    212.8
1912.0     0.149    212.6
1913.0     0.150    212.4
1914.0     0.150    212.2
1915.0     0.151    212.0
1916.0     0.151    211.8
1917.0     0.151    211.6
1918.0     0.152    211.4
1919.0     0.152    211.2
1920.0     0.152    211.0
1921.0     0.152    210.8
1922.0     0.152    210.6
1923.0     0.152    210.4
1924.0     0.152    210.2
1925.0     0.152    210.0
1926.0     0.151    209.8
1927.0     0.151    209.6
1928.0     0.150    209.4
1929.0     0.150    209.2
1930.0     0.149    209.0
1931.0     0.148    208.8
1932.0     0.148    208.6
1933.0     0.147    208.4
1934.0     0.146    208.1
1935.0     0.145    207.9
1936.0     0.143    207.7
1937.0     0.142    207.5
1938.0     0.141    207.3
1939.0     0.139    207.0
1940.0     0.138    206.8
1941.0     0.136    206.5
1942.0     0.134    206.3
1943.0     0.132    206.0
1944.0     0.130    205.8
1945.0     0.128    205.5
1946.0     0.126    205.2
1947.0     0.124    204.9
1948.0     0.121    204.6
1949.0     0.119    204.3
1950.0     0.116    204.0
1951.0     0.114    203.6
1952.0     0.111    203.3
1953.0     0.108    202.9
1954.0     0.105    202.5
1955.0     0.102    202.0
1956.0     0.098    201.6
1957.0     0.095    201.1
1958.0     0.091    200.6
1959.0     0.088    200.0
1960.0     0.084    199.4
1961.0     0.080    198.7
1962.0     0.076    197.9
1963.0     0.072    197.1
1964.0     0.068    196.2
1965.0     0.064    195.1
1966.0     0.060    194.0
1967.0     0.056    192.6
1968.0     0.051    191.0
1969.0     0.047    189.1
1970.0     0.043    186.8
1971.0     0.038    184.1
1972.0     0.034    180.6
1973.0     0.030    176.1
1974.0     0.026    170.2
1975.0     0.022    162.2
1976.0     0.019    151.3
1977.0     0.017    136.9
1978.0     0.016    119.6
1979.0     0.016    101.8
1980.0     0.018     86.5
1981.0     0.021     74.8
1982.0     0.025     66.2
1983.0     0.029     59.8
1984.0     0.033     55.0
1985.0     0.037     51.3
1986.0     0.042     48.3
1987.0     0.046     45.9
1988.0     0.050     43.9
1989.0     0.054     42.2
1990.0     0.059     40.8
1991.0     0.063     39.6
1992.0     0.067     38.5
1993.0     0.071     37.5
1994.0     0.074     36.6
1995.0     0.078     35.8
1996.0     0.082     35.1
1997.0     0.085     34.5
1998.0     0.088     33.9
1999.0     0.091     33.3
2000.0     0.094     32.8
2001.0     0.097     32.3
2002.0     0.100     31.8
2003.0     0.102     31.3
2004.0     0.105     30.9
2005.0     0.107     30.5
2006.0     0.109     30.1
2007.0     0.111     29.7
2008.0     0.113     29.4
2009.0     0.114     29.0
2010.0     0.116     28.7
2011.0     0.117     28.3
2012.0     0.118     28.0
2013.0     0.119     27.7
2014.0     0.120     27.3
2015.0     0.121     27.0
2016.0     0.121     26.7
2017.0     0.122     26.4
2018.0     0.122     26.1
2019.0     0.123     25.8
2020.0     0.123     25.5
2021.0     0.123     25.2
2022.0     0.123     24.9
2023.0     0.122     24.6
2024.0     0.122     24.3
2025.0     0.122     24.0
2026.0     0.121     23.6
2027.0     0.120     23.3
2028.0     0.120     23.0
2029.0     0.119     22.7
2030.0     0.118     22.4
2031.0     0.117     22.0
2032.0     0.116     21.7
2033.0     0.115     21.4
2034.0     0.114     21.0
2035.0     0.112     20.6
2036.0     0.111     20.3
2037.0     0.110     19.9
2038.0     0.108     19.5
2039.0     0.107     19.1
2040.0     0.105     18.7
2041.0     0.103     18.3
2042.0     0.102     17.9
2043.0     0.100     17.4
2044.0     0.098     16.9
2045.0     0.096     16.5
2046.0     0.094     16.0
2047.0     0.092     15.4
2048.0     0.090     14.9
2049.0     0.088     14.3
2050.0     0.086     13.7
2051.0     0.084     13.1
2052.0     0.082     12.4
2053.0     0.080     11.7
2054.0     0.078     11.0
2055.0     0.076     10.2
2056.0     0.073      9.4
2057.0     0.071      8.5
2058.0     0.069      7.6
2059.0     0.067      6.6
2060.0     0.064      5.5
2061.0     0.062      4.4
2062.0     0.060      3.2
2063.0     0.058      1.8
2064.0     0.055      0.4
2065.0     0.053    358.9
2066.0     0.051    357.2
2067.0     0.049    355.3
2068.0     0.047    353.3
2069.0     0.045    351.1
2070.0     0.043    348.7
2071.0     0.041    346.1
2072.0     0.039    343.1
2073.0     0.037    339.9
2074.0     0.035    336.4
2075.0     0.034    332.5
2076.0     0.032    328.3
2077.0     0.031    323.7
2078.0     0.030    318.8
2079.0     0.029    313.5
2080.0     0.029    308.1
2081.0     0.028    302.4
2082.0     0.028    296.7
2083.0     0.029    291.1
2084.0     0.029    285.6
2085.0     0.030    280.3
2086.0     0.031    275.4
2087.0     0.032    270.8
2088.0     0.033    266.5
2089.0     0.035    262.6
2090.0     0.037    259.0
2091.0     0.039    255.8
2092.0     0.040    252.9
2093.0     0.042    250.2
2094.0     0.044    247.8
2095.0     0.047    245.5
2096.0     0.049    243.5
2097.0     0.051    241.7
2098.0     0.053    240.0
2099.0     0.055    238.4
2100.0     0.058    237.0
2101.0     0.060    235.7
2102.0     0.062    234.4
2103.0     0.065    233.3
2104.0     0.067    232.2
2105.0     0.069    231.3
2106.0     0.072    230.3
2107.0     0.074    229.5
2108.0     0.076    228.7
2109.0     0.078    227.9
2110.0     0.081    227.2
2111.0     0.083    226.5
2112.0     0.085    225.8
2113.0     0.087    225.2
2114.0     0.090    224.6
2115.0     0.092    224.1
2116.0     0.094    223.5
2117.0     0.096    223.0
2118.0     0.098    222.6
2119.0     0.100    222.1
2120.0     0.103    221.6
2121.0     0.105    221.2
2122.0     0.107    220.8
2123.0     0.109    220.4
2124.0     0.111    220.0
2125.0     0.112    219.7
2126.0     0.114    219.3
2127.0     0.116    219.0
2128.0     0.118    218.6
2129.0     0.120    218.3
2130.0     0.122    218.0
2131.0     0.123    217.7
2132.0     0.125    217.4
2133.0     0.127    217.1
2134.0     0.128    216.8
2135.0     0.130    216.5
2136.0     0.131    216.3
2137.0     0.133    216.0
2138.0     0.134    215.8
2139.0     0.136    215.5
2140.0     0.137    215.3
2141.0     0.138    215.0
2142.0     0.140    214.8
2143.0     0.141    214.6
2144.0     0.142    214.3






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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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