| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 18:45:55 |
| WDS: | COU415 | WDS ID/Discoverer |
| P: | 94.449 | Orbital period (years) |
| a: | 0.308 | Semi-major axis (arcseconds) |
| i: | 135.2 | Inclination (degrees) |
| Ω: | 129.3 | Longitude of ascending node (degrees) |
| T: | 1989.720 | Epoch of periastron passage (year) |
| e: | 0.383 | Eccentricity |
| ω: | 125.5 | Longitude of periastron (degrees) |
| Start-Year: | 1978.0 | Year |
| End-Year: | 2072.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 172204.55+230940.4 | Epoch-2000 right ascension and declination |
| WDS-ID: | 17221+2310 | WDS designation |
| Discoverer Code: | COU415 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 157392 | HD catalog number |
| Hipparcos number: | 84976 | Hipparcos catalog number |
| V1: | 8.75 | Magnitude of the primary |
| V2: | 9.83 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2009 | 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 0.295 201.5 ------------------------- 1978.0 0.231 99.6 1979.0 0.217 94.9 1980.0 0.203 89.5 1981.0 0.189 83.3 1982.0 0.176 76.2 1983.0 0.164 67.9 1984.0 0.153 58.4 1985.0 0.146 47.8 1986.0 0.141 36.3 1987.0 0.141 24.3 1988.0 0.144 12.5 1989.0 0.150 1.5 1990.0 0.158 351.5 1991.0 0.168 342.5 1992.0 0.178 334.6 1993.0 0.188 327.5 1994.0 0.198 321.2 1995.0 0.206 315.4 1996.0 0.214 310.0 1997.0 0.221 305.0 1998.0 0.226 300.2 1999.0 0.231 295.7 2000.0 0.234 291.3 2001.0 0.237 287.1 2002.0 0.240 282.9 2003.0 0.241 278.8 2004.0 0.243 274.8 2005.0 0.244 270.8 2006.0 0.245 266.8 2007.0 0.246 262.9 2008.0 0.247 259.0 2009.0 0.248 255.1 2010.0 0.250 251.3 2011.0 0.251 247.5 2012.0 0.253 243.8 2013.0 0.254 240.1 2014.0 0.257 236.5 2015.0 0.259 232.9 2016.0 0.262 229.4 2017.0 0.264 226.0 2018.0 0.268 222.6 2019.0 0.271 219.4 2020.0 0.275 216.2 2021.0 0.278 213.1 2022.0 0.282 210.1 2023.0 0.287 207.1 2024.0 0.291 204.3 2025.0 0.295 201.5 2026.0 0.300 198.9 2027.0 0.304 196.3 2028.0 0.309 193.7 2029.0 0.314 191.3 2030.0 0.318 188.9 2031.0 0.323 186.6 2032.0 0.328 184.4 2033.0 0.332 182.2 2034.0 0.337 180.1 2035.0 0.341 178.0 2036.0 0.345 176.0 2037.0 0.349 174.0 2038.0 0.353 172.1 2039.0 0.357 170.2 2040.0 0.360 168.4 2041.0 0.363 166.6 2042.0 0.366 164.8 2043.0 0.369 163.0 2044.0 0.371 161.3 2045.0 0.373 159.6 2046.0 0.375 157.9 2047.0 0.376 156.2 2048.0 0.377 154.5 2049.0 0.377 152.9 2050.0 0.378 151.2 2051.0 0.377 149.5 2052.0 0.377 147.9 2053.0 0.375 146.2 2054.0 0.374 144.5 2055.0 0.371 142.8 2056.0 0.369 141.1 2057.0 0.365 139.3 2058.0 0.361 137.5 2059.0 0.357 135.7 2060.0 0.352 133.8 2061.0 0.346 131.9 2062.0 0.340 129.8 2063.0 0.333 127.7 2064.0 0.325 125.5 2065.0 0.316 123.2 2066.0 0.307 120.8 2067.0 0.297 118.2 2068.0 0.286 115.4 2069.0 0.275 112.4 2070.0 0.263 109.1 2071.0 0.250 105.5