| WDS: | B557AA,AB | WDS ID/Discoverer |
| P: | 106.210 | Orbital period (years) |
| a: | 0.359 | Semi-major axis (arcseconds) |
| i: | 112.2 | Inclination (degrees) |
| Ω: | 189.1 | Longitude of ascending node (degrees) |
| T: | 2020.010 | Epoch of periastron passage (year) |
| e: | 0.898 | Eccentricity |
| ω: | 73.2 | Longitude of periastron (degrees) |
| Start-Year: | 1971.895 | Year |
| End-Year: | 2078.105 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for B557AA,AB |
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| Position: | 222157.60-343113.0 | Epoch-2000 right ascension and declination |
| WDS-ID: | 22220-3431 | WDS designation |
| Discoverer Code: | B557AA,AB | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 212025 | HD catalog number |
| Hipparcos number: | 110419 | Hipparcos catalog number |
| V1: | 8.31 | Magnitude of the primary |
| V2: | 8.26 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2021 | Date of last observation |
| Orbit grade: | 3 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | n | Flags |
| Ephemerides: | Ephemerides | |
| Code: | Tok2022g | Reference |
-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --
| Green plus signs: | Visual (micrometric) measures |
| Violet asterisks: | Photographic measures |
| Blue symbols: | Various interferometric techniques |
| Dot-dash line: | Indicates the line of nodes |
Year Sep[“] PA[°] --------------------------------------------- 2026.50 0.209 353.27 -------------------------- 1971.89 0.302 313.92 1972.89 0.298 313.12 1973.89 0.295 312.29 1974.89 0.292 311.45 1975.89 0.289 310.59 1976.89 0.285 309.71 1977.89 0.282 308.80 1978.89 0.278 307.87 1979.89 0.274 306.92 1980.89 0.270 305.94 1981.89 0.267 304.94 1982.89 0.263 303.90 1983.89 0.259 302.83 1984.89 0.255 301.73 1985.89 0.250 300.59 1986.89 0.246 299.41 1987.89 0.242 298.19 1988.89 0.237 296.92 1989.89 0.233 295.61 1990.89 0.229 294.25 1991.89 0.224 292.83 1992.89 0.220 291.36 1993.89 0.215 289.82 1994.89 0.210 288.21 1995.89 0.206 286.53 1996.89 0.201 284.78 1997.89 0.196 282.94 1998.89 0.192 281.01 1999.89 0.187 278.98 2000.89 0.182 276.84 2001.89 0.177 274.60 2002.89 0.173 272.23 2003.89 0.168 269.72 2004.89 0.163 267.07 2005.89 0.159 264.27 2006.89 0.154 261.29 2007.89 0.149 258.13 2008.89 0.145 254.77 2009.89 0.140 251.19 2010.89 0.135 247.36 2011.89 0.131 243.27 2012.89 0.126 238.86 2013.89 0.121 234.08 2014.89 0.115 228.87 2015.89 0.109 223.08 2016.89 0.101 216.46 2017.89 0.089 208.43 2018.89 0.070 197.05 2019.89 0.024 158.98 2020.89 0.059 18.11 2021.89 0.105 6.96 2022.89 0.137 2.01 2023.89 0.162 358.76 2024.89 0.182 356.31 2025.89 0.200 354.33 2026.89 0.215 352.63 2027.89 0.228 351.15 2028.89 0.240 349.82 2029.89 0.250 348.61 2030.89 0.260 347.49 2031.89 0.268 346.45 2032.89 0.276 345.47 2033.89 0.283 344.54 2034.89 0.289 343.65 2035.89 0.295 342.80 2036.89 0.301 341.99 2037.89 0.306 341.20 2038.89 0.310 340.43 2039.89 0.314 339.68 2040.89 0.318 338.96 2041.89 0.321 338.25 2042.89 0.324 337.55 2043.89 0.327 336.86 2044.89 0.329 336.19 2045.89 0.331 335.53 2046.89 0.333 334.87 2047.89 0.335 334.22 2048.89 0.336 333.57 2049.89 0.337 332.93 2050.89 0.338 332.30 2051.89 0.339 331.66 2052.89 0.340 331.03 2053.89 0.340 330.41 2054.89 0.340 329.78 2055.89 0.340 329.15 2056.89 0.340 328.52 2057.89 0.339 327.89 2058.89 0.339 327.26 2059.89 0.338 326.63 2060.89 0.337 325.99 2061.89 0.336 325.35 2062.89 0.335 324.70 2063.89 0.334 324.05 2064.89 0.332 323.40 2065.89 0.331 322.74 2066.89 0.329 322.07 2067.89 0.327 321.39 2068.89 0.325 320.71 2069.89 0.323 320.02 2070.89 0.321 319.32 2071.89 0.318 318.61 2072.89 0.316 317.89 2073.89 0.313 317.15 2074.89 0.311 316.41 2075.89 0.308 315.65 2076.89 0.305 314.88 2077.89 0.302 314.09
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 18:38:50 |