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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 19:39:35
WDS:
HU994
WDS ID/Discoverer
P:
237.700
Orbital period (years)
a:
0.281
Semi-major axis (arcseconds)
i:
82.1
Inclination (degrees)
Ω:
129.6
Longitude of ascending node (degrees)
T:
1967.400
Epoch of periastron passage (year)
e:
0.289
Eccentricity
ω:
128.4
Longitude of periastron (degrees)
Start-Year:
1907.0
Year
End-Year:
2143.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
230747.74+633800.5
Epoch-2000 right ascension and declination
WDS-ID:
23078+6338
WDS designation
Discoverer Code:
HU994
Discover designation and components
ADS number:
16530
Aitken Double Star catalog
HD number:
218537
HD catalog number
Hipparcos number:
114212
Hipparcos catalog number
V1:
7.16
Magnitude of the primary
V2:
6.87
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2008
Date of last observation
Orbit grade:
3
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 0.121 328.0
-------------------------
1907.0 0.304 130.4
1908.0 0.301 130.6
1909.0 0.298 130.7
1910.0 0.295 130.9
1911.0 0.292 131.1
1912.0 0.289 131.3
1913.0 0.286 131.5
1914.0 0.282 131.7
1915.0 0.278 131.9
1916.0 0.274 132.1
1917.0 0.270 132.3
1918.0 0.266 132.5
1919.0 0.261 132.7
1920.0 0.257 133.0
1921.0 0.252 133.2
1922.0 0.247 133.5
1923.0 0.241 133.7
1924.0 0.236 134.0
1925.0 0.231 134.3
1926.0 0.225 134.6
1927.0 0.219 134.9
1928.0 0.213 135.3
1929.0 0.206 135.6
1930.0 0.200 136.0
1931.0 0.193 136.4
1932.0 0.187 136.8
1933.0 0.180 137.3
1934.0 0.172 137.8
1935.0 0.165 138.4
1936.0 0.158 139.0
1937.0 0.150 139.6
1938.0 0.142 140.4
1939.0 0.134 141.2
1940.0 0.126 142.1
1941.0 0.118 143.2
1942.0 0.110 144.4
1943.0 0.102 145.8
1944.0 0.093 147.5
1945.0 0.085 149.4
1946.0 0.077 151.9
1947.0 0.068 154.9
1948.0 0.060 158.7
1949.0 0.052 163.8
1950.0 0.045 170.6
1951.0 0.038 179.9
1952.0 0.033 192.7
1953.0 0.029 209.3
1954.0 0.029 228.0
1955.0 0.032 245.4
1956.0 0.037 259.1
1957.0 0.043 269.1
1958.0 0.050 276.4
1959.0 0.058 281.8
1960.0 0.066 285.9
1961.0 0.074 289.1
1962.0 0.083 291.7
1963.0 0.091 293.7
1964.0 0.099 295.5
1965.0 0.107 297.0
1966.0 0.115 298.2
1967.0 0.123 299.4
1968.0 0.130 300.3
1969.0 0.138 301.2
1970.0 0.145 302.0
1971.0 0.152 302.7
1972.0 0.158 303.4
1973.0 0.165 304.0
1974.0 0.171 304.5
1975.0 0.176 305.1
1976.0 0.182 305.5
1977.0 0.187 306.0
1978.0 0.191 306.5
1979.0 0.196 306.9
1980.0 0.200 307.3
1981.0 0.204 307.7
1982.0 0.207 308.0
1983.0 0.210 308.4
1984.0 0.213 308.7
1985.0 0.215 309.1
1986.0 0.217 309.4
1987.0 0.219 309.8
1988.0 0.221 310.1
1989.0 0.222 310.4
1990.0 0.223 310.7
1991.0 0.223 311.0
1992.0 0.223 311.4
1993.0 0.223 311.7
1994.0 0.223 312.0
1995.0 0.222 312.3
1996.0 0.222 312.6
1997.0 0.221 312.9
1998.0 0.219 313.3
1999.0 0.218 313.6
2000.0 0.216 313.9
2001.0 0.214 314.3
2002.0 0.212 314.6
2003.0 0.209 315.0
2004.0 0.207 315.3
2005.0 0.204 315.7
2006.0 0.201 316.1
2007.0 0.198 316.5
2008.0 0.194 316.9
2009.0 0.191 317.3
2010.0 0.187 317.8
2011.0 0.184 318.2
2012.0 0.180 318.7
2013.0 0.176 319.2
2014.0 0.172 319.7
2015.0 0.167 320.3
2016.0 0.163 320.8
2017.0 0.159 321.5
2018.0 0.154 322.1
2019.0 0.149 322.8
2020.0 0.145 323.5
2021.0 0.140 324.3
2022.0 0.135 325.1
2023.0 0.130 326.0
2024.0 0.125 327.0
2025.0 0.121 328.0
2026.0 0.116 329.1
2027.0 0.111 330.4
2028.0 0.106 331.7
2029.0 0.101 333.2
2030.0 0.096 334.8
2031.0 0.091 336.6
2032.0 0.086 338.7
2033.0 0.081 340.9
2034.0 0.076 343.5
2035.0 0.072 346.3
2036.0 0.068 349.6
2037.0 0.063 353.2
2038.0 0.059 357.4
2039.0 0.056 2.2
2040.0 0.053 7.5
2041.0 0.050 13.5
2042.0 0.048 20.1
2043.0 0.047 27.1
2044.0 0.046 34.6
2045.0 0.046 42.1
2046.0 0.047 49.4
2047.0 0.048 56.4
2048.0 0.050 62.9
2049.0 0.053 68.8
2050.0 0.056 74.1
2051.0 0.060 78.7
2052.0 0.064 82.8
2053.0 0.068 86.4
2054.0 0.073 89.6
2055.0 0.077 92.4
2056.0 0.082 94.9
2057.0 0.087 97.1
2058.0 0.092 99.1
2059.0 0.097 100.8
2060.0 0.102 102.4
2061.0 0.107 103.9
2062.0 0.112 105.2
2063.0 0.117 106.4
2064.0 0.122 107.5
2065.0 0.127 108.5
2066.0 0.133 109.4
2067.0 0.138 110.3
2068.0 0.143 111.1
2069.0 0.148 111.8
2070.0 0.153 112.5
2071.0 0.158 113.2
2072.0 0.163 113.8
2073.0 0.168 114.4
2074.0 0.173 114.9
2075.0 0.177 115.4
2076.0 0.182 115.9
2077.0 0.187 116.4
2078.0 0.192 116.8
2079.0 0.196 117.2
2080.0 0.201 117.6
2081.0 0.206 118.0
2082.0 0.210 118.4
2083.0 0.214 118.7
2084.0 0.219 119.1
2085.0 0.223 119.4
2086.0 0.227 119.7
2087.0 0.231 120.0
2088.0 0.236 120.3
2089.0 0.240 120.6
2090.0 0.244 120.8
2091.0 0.247 121.1
2092.0 0.251 121.3
2093.0 0.255 121.6
2094.0 0.259 121.8
2095.0 0.262 122.1
2096.0 0.266 122.3
2097.0 0.269 122.5
2098.0 0.272 122.7
2099.0 0.276 122.9
2100.0 0.279 123.1
2101.0 0.282 123.3
2102.0 0.285 123.5
2103.0 0.288 123.7
2104.0 0.290 123.9
2105.0 0.293 124.1
2106.0 0.296 124.3
2107.0 0.298 124.5
2108.0 0.300 124.6
2109.0 0.303 124.8
2110.0 0.305 125.0
2111.0 0.307 125.1
2112.0 0.309 125.3
2113.0 0.311 125.5
2114.0 0.312 125.6
2115.0 0.314 125.8
2116.0 0.316 126.0
2117.0 0.317 126.1
2118.0 0.318 126.3
2119.0 0.319 126.4
2120.0 0.320 126.6
2121.0 0.321 126.7
2122.0 0.322 126.9
2123.0 0.323 127.0
2124.0 0.323 127.2
2125.0 0.324 127.3
2126.0 0.324 127.5
2127.0 0.324 127.6
2128.0 0.324 127.8
2129.0 0.324 127.9
2130.0 0.324 128.1
2131.0 0.324 128.2
2132.0 0.323 128.4
2133.0 0.322 128.5
2134.0 0.322 128.7
2135.0 0.321 128.8
2136.0 0.320 129.0
2137.0 0.318 129.1
2138.0 0.317 129.3
2139.0 0.315 129.5
2140.0 0.314 129.6
2141.0 0.312 129.8
2142.0 0.310 129.9
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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