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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 18:05:42
WDS:
A7
WDS ID/Discoverer
P:
204.320
Orbital period (years)
a:
0.447
Semi-major axis (arcseconds)
i:
105.1
Inclination (degrees)
Ω:
93.3
Longitude of ascending node (degrees)
T:
2050.540
Epoch of periastron passage (year)
e:
0.656
Eccentricity
ω:
59.8
Longitude of periastron (degrees)
Start-Year:
1923.0
Year
End-Year:
2127.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
112943.17-061831.3
Epoch-2000 right ascension and declination
WDS-ID:
11297-0619
WDS designation
Discoverer Code:
A7
Discover designation and components
ADS number:
8182
Aitken Double Star catalog
HD number:
99917
HD catalog number
Hipparcos number:
.
Hipparcos catalog number
V1:
9.7
Magnitude of the primary
V2:
9.7
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2014
Date of last observation
Orbit grade:
4
Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:
Flags
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Click to expand/collapse ephemeris:
Year Sep[“] PA[°]
---------------------------------------------
2025.0 0.197 122.6
-------------------------
1923.0 0.500 257.6
1924.0 0.497 257.4
1925.0 0.495 257.1
1926.0 0.492 256.8
1927.0 0.489 256.5
1928.0 0.486 256.2
1929.0 0.483 255.9
1930.0 0.480 255.6
1931.0 0.477 255.3
1932.0 0.474 255.0
1933.0 0.470 254.7
1934.0 0.467 254.4
1935.0 0.463 254.1
1936.0 0.460 253.7
1937.0 0.456 253.4
1938.0 0.452 253.1
1939.0 0.448 252.7
1940.0 0.444 252.4
1941.0 0.440 252.0
1942.0 0.436 251.7
1943.0 0.432 251.3
1944.0 0.427 250.9
1945.0 0.423 250.5
1946.0 0.419 250.2
1947.0 0.414 249.8
1948.0 0.410 249.3
1949.0 0.405 248.9
1950.0 0.400 248.5
1951.0 0.396 248.1
1952.0 0.391 247.6
1953.0 0.386 247.2
1954.0 0.381 246.7
1955.0 0.376 246.2
1956.0 0.371 245.7
1957.0 0.366 245.2
1958.0 0.361 244.7
1959.0 0.356 244.1
1960.0 0.351 243.6
1961.0 0.345 243.0
1962.0 0.340 242.4
1963.0 0.335 241.8
1964.0 0.329 241.2
1965.0 0.324 240.5
1966.0 0.319 239.9
1967.0 0.313 239.2
1968.0 0.308 238.5
1969.0 0.302 237.7
1970.0 0.297 236.9
1971.0 0.291 236.1
1972.0 0.286 235.3
1973.0 0.280 234.4
1974.0 0.275 233.5
1975.0 0.269 232.6
1976.0 0.264 231.6
1977.0 0.258 230.6
1978.0 0.253 229.6
1979.0 0.247 228.4
1980.0 0.242 227.3
1981.0 0.236 226.1
1982.0 0.231 224.8
1983.0 0.226 223.5
1984.0 0.221 222.1
1985.0 0.216 220.6
1986.0 0.211 219.1
1987.0 0.206 217.5
1988.0 0.201 215.8
1989.0 0.196 214.1
1990.0 0.191 212.2
1991.0 0.187 210.3
1992.0 0.183 208.3
1993.0 0.179 206.2
1994.0 0.175 203.9
1995.0 0.171 201.6
1996.0 0.168 199.2
1997.0 0.165 196.7
1998.0 0.162 194.1
1999.0 0.159 191.4
2000.0 0.157 188.6
2001.0 0.155 185.8
2002.0 0.153 182.8
2003.0 0.152 179.9
2004.0 0.151 176.8
2005.0 0.150 173.8
2006.0 0.150 170.7
2007.0 0.150 167.6
2008.0 0.150 164.5
2009.0 0.151 161.5
2010.0 0.152 158.5
2011.0 0.154 155.5
2012.0 0.156 152.6
2013.0 0.158 149.8
2014.0 0.160 147.0
2015.0 0.163 144.4
2016.0 0.165 141.8
2017.0 0.168 139.3
2018.0 0.172 136.9
2019.0 0.175 134.6
2020.0 0.179 132.4
2021.0 0.182 130.3
2022.0 0.186 128.2
2023.0 0.190 126.3
2024.0 0.193 124.4
2025.0 0.197 122.6
2026.0 0.201 120.8
2027.0 0.204 119.1
2028.0 0.207 117.5
2029.0 0.211 115.9
2030.0 0.214 114.4
2031.0 0.217 112.9
2032.0 0.219 111.4
2033.0 0.221 110.0
2034.0 0.223 108.6
2035.0 0.224 107.2
2036.0 0.225 105.8
2037.0 0.225 104.4
2038.0 0.224 103.1
2039.0 0.222 101.7
2040.0 0.220 100.3
2041.0 0.216 98.8
2042.0 0.210 97.3
2043.0 0.203 95.7
2044.0 0.195 93.9
2045.0 0.184 92.0
2046.0 0.171 89.8
2047.0 0.156 87.2
2048.0 0.138 84.0
2049.0 0.118 79.8
2050.0 0.097 73.7
2051.0 0.075 64.2
2052.0 0.055 47.0
2053.0 0.043 16.0
2054.0 0.047 339.4
2055.0 0.064 316.1
2056.0 0.087 303.7
2057.0 0.110 296.4
2058.0 0.133 291.7
2059.0 0.156 288.4
2060.0 0.177 285.9
2061.0 0.198 283.9
2062.0 0.218 282.3
2063.0 0.236 280.9
2064.0 0.254 279.8
2065.0 0.271 278.8
2066.0 0.287 277.9
2067.0 0.302 277.1
2068.0 0.316 276.4
2069.0 0.329 275.7
2070.0 0.342 275.1
2071.0 0.354 274.5
2072.0 0.365 274.0
2073.0 0.376 273.5
2074.0 0.387 273.0
2075.0 0.396 272.5
2076.0 0.405 272.1
2077.0 0.414 271.7
2078.0 0.422 271.3
2079.0 0.430 270.9
2080.0 0.438 270.6
2081.0 0.445 270.2
2082.0 0.451 269.9
2083.0 0.457 269.5
2084.0 0.463 269.2
2085.0 0.469 268.9
2086.0 0.474 268.6
2087.0 0.479 268.3
2088.0 0.483 268.0
2089.0 0.488 267.7
2090.0 0.492 267.4
2091.0 0.495 267.1
2092.0 0.499 266.8
2093.0 0.502 266.5
2094.0 0.505 266.3
2095.0 0.508 266.0
2096.0 0.510 265.7
2097.0 0.513 265.5
2098.0 0.515 265.2
2099.0 0.516 264.9
2100.0 0.518 264.7
2101.0 0.520 264.4
2102.0 0.521 264.2
2103.0 0.522 263.9
2104.0 0.523 263.7
2105.0 0.523 263.4
2106.0 0.524 263.2
2107.0 0.524 262.9
2108.0 0.524 262.7
2109.0 0.524 262.4
2110.0 0.524 262.1
2111.0 0.524 261.9
2112.0 0.524 261.6
2113.0 0.523 261.4
2114.0 0.522 261.1
2115.0 0.521 260.9
2116.0 0.520 260.6
2117.0 0.519 260.4
2118.0 0.518 260.1
2119.0 0.516 259.9
2120.0 0.515 259.6
2121.0 0.513 259.3
2122.0 0.511 259.1
2123.0 0.510 258.8
2124.0 0.507 258.5
2125.0 0.505 258.3
2126.0 0.503 258.0
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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