Content-Type: text/html; charset=UTF-8
Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 18:05:32
WDS:
RST4944
WDS ID/Discoverer
P:
120.500
Orbital period (years)
a:
0.215
Semi-major axis (arcseconds)
i:
134.8
Inclination (degrees)
Ω:
174.4
Longitude of ascending node (degrees)
T:
2025.580
Epoch of periastron passage (year)
e:
0.64
Eccentricity
ω:
51.7
Longitude of periastron (degrees)
Start-Year:
1965.0
Year
End-Year:
2085.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
112753.73-014159.8
Epoch-2000 right ascension and declination
WDS-ID:
11279-0142
WDS designation
Discoverer Code:
RST4944
Discover designation and components
ADS number:
.
Aitken Double Star catalog
HD number:
99651
HD catalog number
Hipparcos number:
55941
Hipparcos catalog number
V1:
6.62
Magnitude of the primary
V2:
8.22
Magnitude of the secondary
Equinox:
Equinox
Date:
2021
Date of last observation
Orbit grade:
3
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 0.069 142.5
-------------------------
1965.0 0.293 312.9
1966.0 0.292 312.1
1967.0 0.290 311.2
1968.0 0.288 310.3
1969.0 0.286 309.4
1970.0 0.284 308.5
1971.0 0.282 307.5
1972.0 0.280 306.6
1973.0 0.278 305.6
1974.0 0.275 304.7
1975.0 0.273 303.7
1976.0 0.270 302.7
1977.0 0.268 301.6
1978.0 0.265 300.6
1979.0 0.262 299.5
1980.0 0.259 298.4
1981.0 0.256 297.3
1982.0 0.253 296.1
1983.0 0.250 294.9
1984.0 0.246 293.7
1985.0 0.243 292.5
1986.0 0.240 291.2
1987.0 0.236 289.9
1988.0 0.233 288.5
1989.0 0.229 287.1
1990.0 0.225 285.6
1991.0 0.222 284.1
1992.0 0.218 282.6
1993.0 0.214 281.0
1994.0 0.210 279.3
1995.0 0.206 277.6
1996.0 0.202 275.8
1997.0 0.198 273.9
1998.0 0.194 272.0
1999.0 0.190 270.0
2000.0 0.186 267.8
2001.0 0.182 265.6
2002.0 0.178 263.3
2003.0 0.174 260.9
2004.0 0.170 258.4
2005.0 0.166 255.7
2006.0 0.162 252.9
2007.0 0.158 250.0
2008.0 0.154 246.9
2009.0 0.150 243.6
2010.0 0.146 240.2
2011.0 0.142 236.6
2012.0 0.138 232.8
2013.0 0.134 228.8
2014.0 0.131 224.5
2015.0 0.127 220.0
2016.0 0.123 215.2
2017.0 0.119 210.1
2018.0 0.115 204.7
2019.0 0.110 198.8
2020.0 0.105 192.4
2021.0 0.100 185.2
2022.0 0.093 177.2
2023.0 0.086 167.9
2024.0 0.077 156.6
2025.0 0.069 142.5
2026.0 0.062 124.7
2027.0 0.058 103.5
2028.0 0.060 81.8
2029.0 0.067 63.1
2030.0 0.078 48.6
2031.0 0.090 37.8
2032.0 0.102 29.6
2033.0 0.115 23.2
2034.0 0.127 18.1
2035.0 0.138 13.8
2036.0 0.149 10.2
2037.0 0.160 7.1
2038.0 0.170 4.3
2039.0 0.179 1.9
2040.0 0.188 359.7
2041.0 0.197 357.6
2042.0 0.204 355.8
2043.0 0.212 354.1
2044.0 0.219 352.4
2045.0 0.226 350.9
2046.0 0.232 349.5
2047.0 0.238 348.1
2048.0 0.243 346.9
2049.0 0.248 345.6
2050.0 0.253 344.4
2051.0 0.258 343.3
2052.0 0.262 342.2
2053.0 0.266 341.1
2054.0 0.270 340.1
2055.0 0.274 339.1
2056.0 0.277 338.1
2057.0 0.280 337.1
2058.0 0.283 336.2
2059.0 0.286 335.2
2060.0 0.288 334.3
2061.0 0.290 333.4
2062.0 0.292 332.6
2063.0 0.294 331.7
2064.0 0.296 330.8
2065.0 0.297 330.0
2066.0 0.298 329.1
2067.0 0.299 328.3
2068.0 0.300 327.5
2069.0 0.301 326.6
2070.0 0.302 325.8
2071.0 0.302 325.0
2072.0 0.303 324.2
2073.0 0.303 323.4
2074.0 0.303 322.5
2075.0 0.303 321.7
2076.0 0.302 320.9
2077.0 0.302 320.1
2078.0 0.301 319.3
2079.0 0.301 318.4
2080.0 0.300 317.6
2081.0 0.299 316.8
2082.0 0.298 315.9
2083.0 0.297 315.1
2084.0 0.296 314.2
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 .
www.stella-vega.de