| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 16:21:02 |
| WDS: | DON7 | WDS ID/Discoverer |
| P: | 150.000 | Orbital period (years) |
| a: | 0.608 | Semi-major axis (arcseconds) |
| i: | 180.0 | Inclination (degrees) |
| Ω: | 175.0 | Longitude of ascending node (degrees) |
| T: | 2037.800 | Epoch of periastron passage (year) |
| e: | 0.186 | Eccentricity |
| ω: | 337.0 | Longitude of periastron (degrees) |
| Start-Year: | 1950.0 | Year |
| End-Year: | 2100.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 003228.68-680026.8 | Epoch-2000 right ascension and declination |
| WDS-ID: | 00325-6800 | WDS designation |
| Discoverer Code: | DON7 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 2989 | HD catalog number |
| Hipparcos number: | 2556 | Hipparcos catalog number |
| V1: | 10.32 | Magnitude of the primary |
| V2: | 10.06 | Magnitude of the secondary |
| Equinox: | Equinox | |
| Date: | 2019 | 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 0.518 242.2 ------------------------- 1950.0 0.710 39.7 1951.0 0.711 38.0 1952.0 0.713 36.2 1953.0 0.714 34.5 1954.0 0.716 32.8 1955.0 0.717 31.1 1956.0 0.718 29.4 1957.0 0.719 27.7 1958.0 0.719 26.1 1959.0 0.720 24.4 1960.0 0.721 22.7 1961.0 0.721 21.0 1962.0 0.721 19.3 1963.0 0.721 17.7 1964.0 0.721 16.0 1965.0 0.721 14.3 1966.0 0.720 12.6 1967.0 0.720 11.0 1968.0 0.719 9.3 1969.0 0.718 7.6 1970.0 0.717 5.9 1971.0 0.716 4.2 1972.0 0.715 2.5 1973.0 0.714 0.8 1974.0 0.712 359.1 1975.0 0.711 357.3 1976.0 0.709 355.6 1977.0 0.707 353.9 1978.0 0.705 352.1 1979.0 0.703 350.4 1980.0 0.700 348.6 1981.0 0.698 346.8 1982.0 0.695 345.0 1983.0 0.693 343.2 1984.0 0.690 341.4 1985.0 0.687 339.5 1986.0 0.684 337.7 1987.0 0.681 335.8 1988.0 0.678 333.9 1989.0 0.674 332.0 1990.0 0.671 330.1 1991.0 0.667 328.1 1992.0 0.663 326.2 1993.0 0.659 324.2 1994.0 0.655 322.2 1995.0 0.651 320.1 1996.0 0.647 318.1 1997.0 0.643 316.0 1998.0 0.639 313.8 1999.0 0.634 311.7 2000.0 0.630 309.5 2001.0 0.625 307.3 2002.0 0.621 305.0 2003.0 0.616 302.8 2004.0 0.611 300.5 2005.0 0.607 298.1 2006.0 0.602 295.7 2007.0 0.597 293.3 2008.0 0.592 290.8 2009.0 0.588 288.3 2010.0 0.583 285.8 2011.0 0.578 283.2 2012.0 0.573 280.6 2013.0 0.568 277.9 2014.0 0.564 275.2 2015.0 0.559 272.4 2016.0 0.554 269.6 2017.0 0.550 266.7 2018.0 0.545 263.8 2019.0 0.541 260.9 2020.0 0.537 257.9 2021.0 0.533 254.8 2022.0 0.529 251.7 2023.0 0.525 248.6 2024.0 0.521 245.4 2025.0 0.518 242.2 2026.0 0.515 238.9 2027.0 0.512 235.6 2028.0 0.509 232.2 2029.0 0.506 228.8 2030.0 0.504 225.4 2031.0 0.502 222.0 2032.0 0.500 218.5 2033.0 0.498 215.0 2034.0 0.497 211.5 2035.0 0.496 207.9 2036.0 0.495 204.4 2037.0 0.495 200.8 2038.0 0.495 197.3 2039.0 0.495 193.7 2040.0 0.496 190.2 2041.0 0.496 186.6 2042.0 0.498 183.1 2043.0 0.499 179.6 2044.0 0.501 176.1 2045.0 0.503 172.6 2046.0 0.505 169.2 2047.0 0.507 165.8 2048.0 0.510 162.4 2049.0 0.513 159.1 2050.0 0.516 155.8 2051.0 0.519 152.5 2052.0 0.523 149.3 2053.0 0.526 146.2 2054.0 0.530 143.0 2055.0 0.534 140.0 2056.0 0.539 136.9 2057.0 0.543 133.9 2058.0 0.547 131.0 2059.0 0.552 128.1 2060.0 0.556 125.3 2061.0 0.561 122.5 2062.0 0.566 119.7 2063.0 0.570 117.0 2064.0 0.575 114.4 2065.0 0.580 111.8 2066.0 0.585 109.2 2067.0 0.590 106.7 2068.0 0.594 104.2 2069.0 0.599 101.7 2070.0 0.604 99.3 2071.0 0.609 96.9 2072.0 0.613 94.6 2073.0 0.618 92.3 2074.0 0.623 90.1 2075.0 0.627 87.8 2076.0 0.632 85.6 2077.0 0.636 83.4 2078.0 0.640 81.3 2079.0 0.645 79.2 2080.0 0.649 77.1 2081.0 0.653 75.1 2082.0 0.657 73.0 2083.0 0.661 71.0 2084.0 0.665 69.0 2085.0 0.668 67.1 2086.0 0.672 65.1 2087.0 0.675 63.2 2088.0 0.679 61.3 2089.0 0.682 59.4 2090.0 0.685 57.6 2091.0 0.688 55.7 2092.0 0.691 53.9 2093.0 0.694 52.1 2094.0 0.697 50.3 2095.0 0.699 48.5 2096.0 0.701 46.7 2097.0 0.704 44.9 2098.0 0.706 43.2 2099.0 0.708 41.4