| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 18:49:18 |
| WDS: | HDO275 | WDS ID/Discoverer |
| P: | 98.600 | Orbital period (years) |
| a: | 0.629 | Semi-major axis (arcseconds) |
| i: | 150.1 | Inclination (degrees) |
| Ω: | 266.3 | Longitude of ascending node (degrees) |
| T: | 1986.760 | Epoch of periastron passage (year) |
| e: | 0.319 | Eccentricity |
| ω: | 58.6 | Longitude of periastron (degrees) |
| Start-Year: | 1976.0 | Year |
| End-Year: | 2074.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 174419.81-721315.4 | Epoch-2000 right ascension and declination |
| WDS-ID: | 17443-7213 | WDS designation |
| Discoverer Code: | HDO275 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 159964 | HD catalog number |
| Hipparcos number: | 86815 | Hipparcos catalog number |
| V1: | 6.85 | Magnitude of the primary |
| V2: | 8.11 | 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: | Flags |
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Year Sep[“] PA[°] --------------------------------------------- 2025.0 0.766 54.0 ------------------------- 1976.0 0.508 276.9 1977.0 0.498 272.2 1978.0 0.487 267.3 1979.0 0.475 262.2 1980.0 0.463 256.8 1981.0 0.451 251.1 1982.0 0.438 245.1 1983.0 0.426 238.7 1984.0 0.414 232.0 1985.0 0.403 224.9 1986.0 0.393 217.4 1987.0 0.386 209.5 1988.0 0.381 201.5 1989.0 0.379 193.2 1990.0 0.380 185.0 1991.0 0.385 176.9 1992.0 0.392 169.0 1993.0 0.402 161.5 1994.0 0.415 154.3 1995.0 0.429 147.7 1996.0 0.445 141.4 1997.0 0.463 135.7 1998.0 0.481 130.3 1999.0 0.499 125.4 2000.0 0.517 120.8 2001.0 0.535 116.5 2002.0 0.553 112.5 2003.0 0.571 108.7 2004.0 0.587 105.2 2005.0 0.604 101.9 2006.0 0.619 98.7 2007.0 0.634 95.7 2008.0 0.648 92.8 2009.0 0.661 90.0 2010.0 0.673 87.3 2011.0 0.684 84.7 2012.0 0.695 82.3 2013.0 0.705 79.8 2014.0 0.714 77.5 2015.0 0.722 75.2 2016.0 0.730 72.9 2017.0 0.736 70.7 2018.0 0.742 68.5 2019.0 0.748 66.4 2020.0 0.752 64.3 2021.0 0.756 62.2 2022.0 0.759 60.1 2023.0 0.762 58.1 2024.0 0.764 56.0 2025.0 0.766 54.0 2026.0 0.767 52.0 2027.0 0.767 50.0 2028.0 0.767 48.0 2029.0 0.767 45.9 2030.0 0.766 43.9 2031.0 0.764 41.9 2032.0 0.762 39.9 2033.0 0.760 37.8 2034.0 0.757 35.7 2035.0 0.754 33.7 2036.0 0.751 31.6 2037.0 0.747 29.5 2038.0 0.743 27.3 2039.0 0.739 25.2 2040.0 0.735 23.0 2041.0 0.730 20.8 2042.0 0.725 18.5 2043.0 0.720 16.3 2044.0 0.715 13.9 2045.0 0.709 11.6 2046.0 0.704 9.2 2047.0 0.698 6.8 2048.0 0.692 4.4 2049.0 0.686 1.9 2050.0 0.680 359.3 2051.0 0.674 356.7 2052.0 0.668 354.1 2053.0 0.662 351.4 2054.0 0.656 348.7 2055.0 0.649 345.9 2056.0 0.643 343.0 2057.0 0.637 340.1 2058.0 0.631 337.2 2059.0 0.625 334.2 2060.0 0.618 331.1 2061.0 0.612 328.0 2062.0 0.606 324.8 2063.0 0.599 321.5 2064.0 0.593 318.1 2065.0 0.586 314.7 2066.0 0.579 311.2 2067.0 0.572 307.7 2068.0 0.565 304.0 2069.0 0.558 300.2 2070.0 0.550 296.4 2071.0 0.542 292.4 2072.0 0.533 288.3 2073.0 0.524 284.0