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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 18:19:41
WDS:
STF1781AB
WDS ID/Discoverer
P:
253.705
Orbital period (years)
a:
1.00383
Semi-major axis (arcseconds)
i:
44.45
Inclination (degrees)
Ω:
179.465
Longitude of ascending node (degrees)
T:
1976.218
Epoch of periastron passage (year)
e:
0.63185
Eccentricity
ω:
250.326
Longitude of periastron (degrees)
Start-Year:
1899.0
Year
End-Year:
2151.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
134606.75+050656.1
Epoch-2000 right ascension and declination
WDS-ID:
13461+0507
WDS designation
Discoverer Code:
STF1781AB
Discover designation and components
ADS number:
9019
Aitken Double Star catalog
HD number:
119931
HD catalog number
Hipparcos number:
67186
Hipparcos catalog number
V1:
7.89
Magnitude of the primary
V2:
8.10
Magnitude of the secondary
Equinox:
Equinox
Date:
2015
Date of last observation
Orbit grade:
2
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 1.088 201.7
-------------------------
1899.0 1.038 273.0
1900.0 1.033 273.7
1901.0 1.028 274.5
1902.0 1.023 275.2
1903.0 1.018 276.0
1904.0 1.013 276.8
1905.0 1.007 277.5
1906.0 1.002 278.3
1907.0 0.997 279.1
1908.0 0.991 279.9
1909.0 0.986 280.7
1910.0 0.980 281.5
1911.0 0.975 282.4
1912.0 0.969 283.2
1913.0 0.964 284.1
1914.0 0.958 284.9
1915.0 0.952 285.8
1916.0 0.946 286.7
1917.0 0.941 287.5
1918.0 0.935 288.4
1919.0 0.929 289.4
1920.0 0.923 290.3
1921.0 0.917 291.2
1922.0 0.911 292.2
1923.0 0.905 293.1
1924.0 0.899 294.1
1925.0 0.893 295.1
1926.0 0.887 296.1
1927.0 0.880 297.1
1928.0 0.874 298.1
1929.0 0.867 299.2
1930.0 0.861 300.2
1931.0 0.854 301.3
1932.0 0.848 302.4
1933.0 0.841 303.5
1934.0 0.834 304.6
1935.0 0.827 305.8
1936.0 0.820 306.9
1937.0 0.813 308.1
1938.0 0.806 309.3
1939.0 0.798 310.6
1940.0 0.791 311.8
1941.0 0.783 313.1
1942.0 0.775 314.4
1943.0 0.767 315.7
1944.0 0.759 317.1
1945.0 0.751 318.5
1946.0 0.742 319.9
1947.0 0.734 321.3
1948.0 0.725 322.8
1949.0 0.716 324.4
1950.0 0.706 325.9
1951.0 0.696 327.5
1952.0 0.686 329.2
1953.0 0.675 330.9
1954.0 0.665 332.7
1955.0 0.653 334.5
1956.0 0.641 336.4
1957.0 0.629 338.3
1958.0 0.616 340.4
1959.0 0.603 342.5
1960.0 0.589 344.7
1961.0 0.574 347.1
1962.0 0.558 349.5
1963.0 0.542 352.2
1964.0 0.525 354.9
1965.0 0.507 357.9
1966.0 0.488 1.1
1967.0 0.468 4.6
1968.0 0.447 8.4
1969.0 0.425 12.5
1970.0 0.402 17.2
1971.0 0.379 22.4
1972.0 0.356 28.2
1973.0 0.334 34.9
1974.0 0.313 42.5
1975.0 0.295 51.0
1976.0 0.280 60.6
1977.0 0.271 71.1
1978.0 0.268 82.0
1979.0 0.272 92.9
1980.0 0.282 103.3
1981.0 0.297 112.7
1982.0 0.317 121.1
1983.0 0.341 128.5
1984.0 0.366 134.8
1985.0 0.392 140.3
1986.0 0.420 145.2
1987.0 0.447 149.4
1988.0 0.475 153.1
1989.0 0.502 156.4
1990.0 0.528 159.4
1991.0 0.554 162.1
1992.0 0.580 164.6
1993.0 0.604 166.8
1994.0 0.628 168.9
1995.0 0.652 170.8
1996.0 0.674 172.6
1997.0 0.696 174.3
1998.0 0.717 175.9
1999.0 0.737 177.4
2000.0 0.757 178.8
2001.0 0.776 180.2
2002.0 0.794 181.4
2003.0 0.812 182.7
2004.0 0.830 183.8
2005.0 0.846 185.0
2006.0 0.862 186.1
2007.0 0.878 187.1
2008.0 0.893 188.1
2009.0 0.908 189.1
2010.0 0.922 190.0
2011.0 0.936 191.0
2012.0 0.949 191.8
2013.0 0.962 192.7
2014.0 0.974 193.6
2015.0 0.986 194.4
2016.0 0.998 195.2
2017.0 1.009 196.0
2018.0 1.020 196.7
2019.0 1.031 197.5
2020.0 1.041 198.2
2021.0 1.051 198.9
2022.0 1.061 199.7
2023.0 1.070 200.3
2024.0 1.079 201.0
2025.0 1.088 201.7
2026.0 1.096 202.4
2027.0 1.105 203.0
2028.0 1.112 203.7
2029.0 1.120 204.3
2030.0 1.127 204.9
2031.0 1.135 205.5
2032.0 1.141 206.2
2033.0 1.148 206.8
2034.0 1.155 207.4
2035.0 1.161 208.0
2036.0 1.167 208.5
2037.0 1.172 209.1
2038.0 1.178 209.7
2039.0 1.183 210.3
2040.0 1.188 210.8
2041.0 1.193 211.4
2042.0 1.198 211.9
2043.0 1.203 212.5
2044.0 1.207 213.0
2045.0 1.211 213.6
2046.0 1.215 214.1
2047.0 1.219 214.6
2048.0 1.223 215.2
2049.0 1.226 215.7
2050.0 1.230 216.2
2051.0 1.233 216.7
2052.0 1.236 217.3
2053.0 1.239 217.8
2054.0 1.242 218.3
2055.0 1.244 218.8
2056.0 1.247 219.3
2057.0 1.249 219.8
2058.0 1.251 220.3
2059.0 1.253 220.8
2060.0 1.255 221.3
2061.0 1.257 221.8
2062.0 1.258 222.3
2063.0 1.260 222.8
2064.0 1.261 223.3
2065.0 1.262 223.8
2066.0 1.263 224.3
2067.0 1.264 224.8
2068.0 1.265 225.3
2069.0 1.266 225.8
2070.0 1.266 226.3
2071.0 1.267 226.8
2072.0 1.267 227.3
2073.0 1.268 227.8
2074.0 1.268 228.3
2075.0 1.268 228.8
2076.0 1.268 229.3
2077.0 1.268 229.8
2078.0 1.267 230.2
2079.0 1.267 230.7
2080.0 1.267 231.2
2081.0 1.266 231.7
2082.0 1.265 232.2
2083.0 1.265 232.7
2084.0 1.264 233.2
2085.0 1.263 233.7
2086.0 1.262 234.2
2087.0 1.261 234.7
2088.0 1.260 235.2
2089.0 1.258 235.7
2090.0 1.257 236.2
2091.0 1.255 236.7
2092.0 1.254 237.2
2093.0 1.252 237.7
2094.0 1.251 238.2
2095.0 1.249 238.7
2096.0 1.247 239.2
2097.0 1.245 239.7
2098.0 1.243 240.2
2099.0 1.241 240.8
2100.0 1.239 241.3
2101.0 1.236 241.8
2102.0 1.234 242.3
2103.0 1.232 242.8
2104.0 1.229 243.3
2105.0 1.227 243.9
2106.0 1.224 244.4
2107.0 1.221 244.9
2108.0 1.219 245.5
2109.0 1.216 246.0
2110.0 1.213 246.5
2111.0 1.210 247.1
2112.0 1.207 247.6
2113.0 1.204 248.2
2114.0 1.201 248.7
2115.0 1.198 249.3
2116.0 1.194 249.8
2117.0 1.191 250.4
2118.0 1.188 250.9
2119.0 1.184 251.5
2120.0 1.181 252.0
2121.0 1.177 252.6
2122.0 1.173 253.2
2123.0 1.170 253.8
2124.0 1.166 254.3
2125.0 1.162 254.9
2126.0 1.158 255.5
2127.0 1.155 256.1
2128.0 1.151 256.7
2129.0 1.147 257.3
2130.0 1.143 257.9
2131.0 1.138 258.5
2132.0 1.134 259.1
2133.0 1.130 259.7
2134.0 1.126 260.4
2135.0 1.122 261.0
2136.0 1.117 261.6
2137.0 1.113 262.3
2138.0 1.108 262.9
2139.0 1.104 263.6
2140.0 1.099 264.2
2141.0 1.095 264.9
2142.0 1.090 265.5
2143.0 1.086 266.2
2144.0 1.081 266.9
2145.0 1.076 267.5
2146.0 1.071 268.2
2147.0 1.067 268.9
2148.0 1.062 269.6
2149.0 1.057 270.3
2150.0 1.052 271.0
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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