| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 19:11:34 |
| WDS: | BU1205 | WDS ID/Discoverer |
| P: | 139.900 | Orbital period (years) |
| a: | 0.486 | Semi-major axis (arcseconds) |
| i: | 78.3 | Inclination (degrees) |
| Ω: | 231.24 | Longitude of ascending node (degrees) |
| T: | 1983.500 | Epoch of periastron passage (year) |
| e: | 0.384 | Eccentricity |
| ω: | 10.4 | Longitude of periastron (degrees) |
| Start-Year: | 1956.0 | Year |
| End-Year: | 2094.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 201215.32-080532.1 | Epoch-2000 right ascension and declination |
| WDS-ID: | 20123-0806 | WDS designation |
| Discoverer Code: | BU1205 | Discover designation and components |
| ADS number: | 13493 | Aitken Double Star catalog |
| HD number: | 191841 | HD catalog number |
| Hipparcos number: | 99558 | Hipparcos catalog number |
| V1: | 7.5 | Magnitude of the primary |
| V2: | 8.8 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2008 | Date of last observation |
| Orbit grade: | 4 | Orbit grade, ranging from 1 'definitive' to 5 'indeterminate' |
| Flags: | Flags |
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Year Sep[“] PA[°] --------------------------------------------- 2025.0 0.526 45.1 ------------------------- 1956.0 0.159 89.0 1957.0 0.142 94.0 1958.0 0.126 100.4 1959.0 0.112 108.4 1960.0 0.101 118.5 1961.0 0.093 130.7 1962.0 0.090 144.4 1963.0 0.092 158.3 1964.0 0.099 170.9 1965.0 0.109 181.6 1966.0 0.122 190.1 1967.0 0.137 196.9 1968.0 0.153 202.3 1969.0 0.170 206.7 1970.0 0.186 210.3 1971.0 0.203 213.3 1972.0 0.219 215.9 1973.0 0.234 218.1 1974.0 0.248 220.1 1975.0 0.261 221.9 1976.0 0.272 223.5 1977.0 0.282 224.9 1978.0 0.290 226.3 1979.0 0.296 227.7 1980.0 0.300 228.9 1981.0 0.301 230.2 1982.0 0.300 231.4 1983.0 0.297 232.7 1984.0 0.292 234.0 1985.0 0.284 235.4 1986.0 0.273 236.9 1987.0 0.261 238.5 1988.0 0.247 240.2 1989.0 0.231 242.2 1990.0 0.213 244.5 1991.0 0.195 247.3 1992.0 0.176 250.6 1993.0 0.156 254.7 1994.0 0.137 260.1 1995.0 0.118 267.1 1996.0 0.101 276.6 1997.0 0.088 289.5 1998.0 0.080 306.0 1999.0 0.079 324.4 2000.0 0.086 341.4 2001.0 0.098 355.0 2002.0 0.115 5.1 2003.0 0.134 12.5 2004.0 0.154 18.1 2005.0 0.175 22.3 2006.0 0.196 25.7 2007.0 0.217 28.4 2008.0 0.238 30.6 2009.0 0.258 32.4 2010.0 0.279 34.0 2011.0 0.299 35.4 2012.0 0.318 36.6 2013.0 0.337 37.6 2014.0 0.356 38.6 2015.0 0.374 39.4 2016.0 0.392 40.2 2017.0 0.409 40.9 2018.0 0.426 41.6 2019.0 0.442 42.2 2020.0 0.457 42.7 2021.0 0.472 43.3 2022.0 0.486 43.7 2023.0 0.500 44.2 2024.0 0.514 44.7 2025.0 0.526 45.1 2026.0 0.538 45.5 2027.0 0.550 45.9 2028.0 0.561 46.2 2029.0 0.571 46.6 2030.0 0.581 46.9 2031.0 0.591 47.3 2032.0 0.599 47.6 2033.0 0.608 47.9 2034.0 0.616 48.2 2035.0 0.623 48.5 2036.0 0.629 48.8 2037.0 0.635 49.1 2038.0 0.641 49.4 2039.0 0.646 49.6 2040.0 0.651 49.9 2041.0 0.655 50.2 2042.0 0.658 50.4 2043.0 0.661 50.7 2044.0 0.664 51.0 2045.0 0.666 51.2 2046.0 0.667 51.5 2047.0 0.668 51.7 2048.0 0.668 52.0 2049.0 0.668 52.2 2050.0 0.668 52.5 2051.0 0.667 52.7 2052.0 0.665 53.0 2053.0 0.663 53.3 2054.0 0.661 53.5 2055.0 0.658 53.8 2056.0 0.654 54.0 2057.0 0.650 54.3 2058.0 0.646 54.6 2059.0 0.641 54.9 2060.0 0.635 55.1 2061.0 0.629 55.4 2062.0 0.623 55.7 2063.0 0.616 56.0 2064.0 0.609 56.3 2065.0 0.601 56.6 2066.0 0.592 56.9 2067.0 0.584 57.3 2068.0 0.575 57.6 2069.0 0.565 58.0 2070.0 0.555 58.3 2071.0 0.544 58.7 2072.0 0.533 59.1 2073.0 0.522 59.5 2074.0 0.510 59.9 2075.0 0.497 60.4 2076.0 0.485 60.9 2077.0 0.471 61.3 2078.0 0.458 61.9 2079.0 0.444 62.4 2080.0 0.429 63.0 2081.0 0.414 63.7 2082.0 0.399 64.4 2083.0 0.383 65.1 2084.0 0.367 65.9 2085.0 0.351 66.8 2086.0 0.334 67.8 2087.0 0.317 68.8 2088.0 0.300 70.0 2089.0 0.282 71.4 2090.0 0.264 72.9 2091.0 0.246 74.7 2092.0 0.228 76.7 2093.0 0.210 79.0