| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 19:28:49 |
| 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: | 1972.0 | Year |
| End-Year: | 2078.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| 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' to 5 'indeterminate' |
| Flags: | n | Flags |
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Year Sep[“] PA[°] --------------------------------------------- 2025.0 0.421 198.2 ------------------------- 1972.0 0.247 208.7 1973.0 0.255 208.3 1974.0 0.263 207.9 1975.0 0.271 207.6 1976.0 0.278 207.2 1977.0 0.285 206.9 1978.0 0.292 206.6 1979.0 0.299 206.3 1980.0 0.306 206.0 1981.0 0.312 205.7 1982.0 0.319 205.4 1983.0 0.325 205.2 1984.0 0.331 204.9 1985.0 0.337 204.7 1986.0 0.342 204.5 1987.0 0.348 204.3 1988.0 0.353 204.1 1989.0 0.358 203.8 1990.0 0.363 203.6 1991.0 0.368 203.4 1992.0 0.372 203.3 1993.0 0.377 203.1 1994.0 0.381 202.9 1995.0 0.385 202.7 1996.0 0.389 202.5 1997.0 0.393 202.4 1998.0 0.396 202.2 1999.0 0.400 202.0 2000.0 0.403 201.9 2001.0 0.406 201.7 2002.0 0.409 201.6 2003.0 0.412 201.4 2004.0 0.414 201.2 2005.0 0.417 201.1 2006.0 0.419 200.9 2007.0 0.421 200.8 2008.0 0.422 200.6 2009.0 0.424 200.5 2010.0 0.425 200.4 2011.0 0.427 200.2 2012.0 0.428 200.1 2013.0 0.429 199.9 2014.0 0.429 199.8 2015.0 0.430 199.6 2016.0 0.430 199.5 2017.0 0.430 199.4 2018.0 0.429 199.2 2019.0 0.429 199.1 2020.0 0.428 198.9 2021.0 0.427 198.8 2022.0 0.426 198.6 2023.0 0.425 198.5 2024.0 0.423 198.4 2025.0 0.421 198.2 2026.0 0.419 198.1 2027.0 0.416 197.9 2028.0 0.413 197.8 2029.0 0.410 197.6 2030.0 0.407 197.4 2031.0 0.403 197.3 2032.0 0.398 197.1 2033.0 0.394 197.0 2034.0 0.389 196.8 2035.0 0.383 196.6 2036.0 0.378 196.4 2037.0 0.371 196.2 2038.0 0.364 196.1 2039.0 0.357 195.9 2040.0 0.349 195.6 2041.0 0.341 195.4 2042.0 0.331 195.2 2043.0 0.321 194.9 2044.0 0.310 194.7 2045.0 0.298 194.4 2046.0 0.285 194.1 2047.0 0.271 193.8 2048.0 0.255 193.4 2049.0 0.237 192.9 2050.0 0.217 192.4 2051.0 0.193 191.8 2052.0 0.165 191.0 2053.0 0.128 189.8 2054.0 0.070 187.0 2055.0 0.032 344.1 2056.0 0.030 317.5 2057.0 0.031 288.8 2058.0 0.037 265.7 2059.0 0.047 250.5 2060.0 0.058 240.8 2061.0 0.069 234.2 2062.0 0.081 229.5 2063.0 0.092 226.0 2064.0 0.104 223.2 2065.0 0.115 221.0 2066.0 0.126 219.2 2067.0 0.137 217.7 2068.0 0.147 216.4 2069.0 0.157 215.3 2070.0 0.167 214.3 2071.0 0.177 213.4 2072.0 0.187 212.6 2073.0 0.196 211.9 2074.0 0.205 211.2 2075.0 0.214 210.6 2076.0 0.223 210.1 2077.0 0.232 209.6