| WDS: | BU688AB | WDS ID/Discoverer |
| P: | 106.900 | Orbital period (years) |
| a: | 0.673 | Semi-major axis (arcseconds) |
| i: | 95.9 | Inclination (degrees) |
| Ω: | 182.8 | Longitude of ascending node (degrees) |
| T: | 1947.530 | Epoch of periastron passage (year) |
| e: | 0.986 | Eccentricity |
| ω: | 106.7 | Longitude of periastron (degrees) |
| Start-Year: | 1971.55 | Year |
| End-Year: | 2078.45 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for BU688AB |
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| Position: | 214233.41+410251.0 | Epoch-2000 right ascension and declination |
| WDS-ID: | 21426+4103 | WDS designation |
| Discoverer Code: | BU688AB | Discover designation and components |
| ADS number: | 15251 | Aitken Double Star catalog |
| HD number: | 206656 | HD catalog number |
| Hipparcos number: | 107177 | Hipparcos catalog number |
| V1: | 8.10 | Magnitude of the primary |
| V2: | 8.62 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2017 | 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: | USN2018 | 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 0.417 197.99 -------------------------- 1971.55 0.244 208.92 1972.55 0.252 208.49 1973.55 0.260 208.09 1974.55 0.267 207.72 1975.55 0.275 207.36 1976.55 0.282 207.02 1977.55 0.289 206.70 1978.55 0.296 206.40 1979.55 0.303 206.11 1980.55 0.309 205.83 1981.55 0.316 205.56 1982.55 0.322 205.30 1983.55 0.328 205.06 1984.55 0.334 204.82 1985.55 0.340 204.59 1986.55 0.345 204.36 1987.55 0.351 204.15 1988.55 0.356 203.94 1989.55 0.361 203.73 1990.55 0.366 203.54 1991.55 0.370 203.34 1992.55 0.375 203.15 1993.55 0.379 202.97 1994.55 0.383 202.79 1995.55 0.387 202.61 1996.55 0.391 202.44 1997.55 0.395 202.27 1998.55 0.398 202.11 1999.55 0.402 201.94 2000.55 0.405 201.78 2001.55 0.408 201.62 2002.55 0.410 201.47 2003.55 0.413 201.31 2004.55 0.415 201.16 2005.55 0.418 201.01 2006.55 0.420 200.86 2007.55 0.422 200.71 2008.55 0.423 200.57 2009.55 0.425 200.42 2010.55 0.426 200.28 2011.55 0.427 200.13 2012.55 0.428 199.99 2013.55 0.429 199.85 2014.55 0.429 199.71 2015.55 0.430 199.56 2016.55 0.430 199.42 2017.55 0.430 199.28 2018.55 0.429 199.14 2019.55 0.429 199.00 2020.55 0.428 198.85 2021.55 0.427 198.71 2022.55 0.425 198.57 2023.55 0.424 198.42 2024.55 0.422 198.28 2025.55 0.420 198.13 2026.55 0.417 197.98 2027.55 0.415 197.83 2028.55 0.411 197.67 2029.55 0.408 197.52 2030.55 0.404 197.36 2031.55 0.400 197.20 2032.55 0.396 197.03 2033.55 0.391 196.87 2034.55 0.386 196.69 2035.55 0.380 196.51 2036.55 0.374 196.33 2037.55 0.368 196.14 2038.55 0.361 195.94 2039.55 0.353 195.74 2040.55 0.344 195.52 2041.55 0.336 195.30 2042.55 0.326 195.06 2043.55 0.315 194.80 2044.55 0.304 194.53 2045.55 0.291 194.23 2046.55 0.277 193.91 2047.55 0.262 193.55 2048.55 0.245 193.15 2049.55 0.226 192.68 2050.55 0.204 192.11 2051.55 0.178 191.39 2052.55 0.146 190.40 2053.55 0.101 188.67 2054.55 0.025 357.24 2055.55 0.031 329.95 2056.55 0.030 301.47 2057.55 0.034 275.03 2058.55 0.042 256.51 2059.55 0.053 244.65 2060.55 0.064 236.84 2061.55 0.075 231.41 2062.55 0.087 227.42 2063.55 0.098 224.37 2064.55 0.110 221.95 2065.55 0.121 219.98 2066.55 0.132 218.34 2067.55 0.142 216.95 2068.55 0.153 215.75 2069.55 0.163 214.70 2070.55 0.173 213.77 2071.55 0.183 212.94 2072.55 0.192 212.20 2073.55 0.201 211.52 2074.55 0.210 210.90 2075.55 0.219 210.34 2076.55 0.228 209.81 2077.55 0.236 209.33
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 18:28:56 |