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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 19:36:21
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
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
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
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
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 .
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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