| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 19:17:41 |
| WDS: | HDS2989DA,DB | WDS ID/Discoverer |
| P: | 212.700 | Orbital period (years) |
| a: | 0.94 | Semi-major axis (arcseconds) |
| i: | 90.9 | Inclination (degrees) |
| Ω: | 154.5 | Longitude of ascending node (degrees) |
| T: | 2142.300 | Epoch of periastron passage (year) |
| e: | 0.85 | Eccentricity |
| ω: | 270.0 | Longitude of periastron (degrees) |
| Start-Year: | 1919.0 | Year |
| End-Year: | 2131.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 205811.46+401129.0 | Epoch-2000 right ascension and declination |
| WDS-ID: | 20599+4016 | WDS designation |
| Discoverer Code: | HDS2989DA,DB | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | . | HD catalog number |
| Hipparcos number: | 103502 | Hipparcos catalog number |
| V1: | 11.16 | Magnitude of the primary |
| V2: | 12.46 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2018 | Date of last observation |
| Orbit grade: | 4 | 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 0.090 137.1 ------------------------- 1919.0 0.430 335.2 1920.0 0.416 335.1 1921.0 0.400 335.1 1922.0 0.381 335.0 1923.0 0.359 334.9 1924.0 0.332 334.8 1925.0 0.300 334.7 1926.0 0.260 334.5 1927.0 0.209 334.3 1928.0 0.142 333.9 1929.0 0.058 332.4 1930.0 0.039 157.7 1931.0 0.127 155.3 1932.0 0.197 154.8 1933.0 0.251 154.5 1934.0 0.293 154.4 1935.0 0.327 154.2 1936.0 0.354 154.1 1937.0 0.377 154.0 1938.0 0.397 154.0 1939.0 0.413 153.9 1940.0 0.427 153.8 1941.0 0.439 153.8 1942.0 0.450 153.7 1943.0 0.458 153.6 1944.0 0.466 153.6 1945.0 0.472 153.5 1946.0 0.478 153.5 1947.0 0.482 153.4 1948.0 0.486 153.4 1949.0 0.489 153.3 1950.0 0.491 153.3 1951.0 0.493 153.2 1952.0 0.494 153.1 1953.0 0.495 153.1 1954.0 0.495 153.0 1955.0 0.495 153.0 1956.0 0.495 152.9 1957.0 0.494 152.9 1958.0 0.492 152.8 1959.0 0.491 152.8 1960.0 0.489 152.7 1961.0 0.486 152.7 1962.0 0.484 152.6 1963.0 0.481 152.6 1964.0 0.478 152.5 1965.0 0.475 152.5 1966.0 0.471 152.4 1967.0 0.468 152.4 1968.0 0.464 152.3 1969.0 0.460 152.3 1970.0 0.456 152.2 1971.0 0.451 152.1 1972.0 0.447 152.1 1973.0 0.442 152.0 1974.0 0.437 151.9 1975.0 0.432 151.9 1976.0 0.427 151.8 1977.0 0.422 151.7 1978.0 0.417 151.7 1979.0 0.411 151.6 1980.0 0.406 151.5 1981.0 0.400 151.4 1982.0 0.394 151.4 1983.0 0.388 151.3 1984.0 0.382 151.2 1985.0 0.376 151.1 1986.0 0.370 151.0 1987.0 0.364 150.9 1988.0 0.357 150.8 1989.0 0.351 150.7 1990.0 0.345 150.6 1991.0 0.338 150.5 1992.0 0.331 150.4 1993.0 0.325 150.3 1994.0 0.318 150.2 1995.0 0.311 150.1 1996.0 0.304 149.9 1997.0 0.297 149.8 1998.0 0.290 149.7 1999.0 0.283 149.5 2000.0 0.276 149.3 2001.0 0.269 149.2 2002.0 0.262 149.0 2003.0 0.255 148.8 2004.0 0.248 148.6 2005.0 0.240 148.4 2006.0 0.233 148.2 2007.0 0.226 148.0 2008.0 0.218 147.7 2009.0 0.211 147.4 2010.0 0.204 147.2 2011.0 0.196 146.8 2012.0 0.189 146.5 2013.0 0.181 146.1 2014.0 0.174 145.8 2015.0 0.166 145.3 2016.0 0.159 144.9 2017.0 0.151 144.3 2018.0 0.143 143.8 2019.0 0.136 143.1 2020.0 0.128 142.4 2021.0 0.121 141.6 2022.0 0.113 140.7 2023.0 0.106 139.7 2024.0 0.098 138.5 2025.0 0.090 137.1 2026.0 0.083 135.4 2027.0 0.076 133.5 2028.0 0.068 131.1 2029.0 0.061 128.1 2030.0 0.054 124.4 2031.0 0.048 119.6 2032.0 0.041 113.3 2033.0 0.036 105.0 2034.0 0.031 93.9 2035.0 0.028 79.9 2036.0 0.027 63.7 2037.0 0.029 47.6 2038.0 0.032 33.8 2039.0 0.036 23.0 2040.0 0.042 14.9 2041.0 0.048 8.8 2042.0 0.055 4.2 2043.0 0.062 0.6 2044.0 0.069 357.7 2045.0 0.076 355.3 2046.0 0.084 353.4 2047.0 0.091 351.8 2048.0 0.099 350.4 2049.0 0.106 349.2 2050.0 0.114 348.2 2051.0 0.121 347.3 2052.0 0.129 346.5 2053.0 0.137 345.8 2054.0 0.144 345.2 2055.0 0.152 344.6 2056.0 0.159 344.1 2057.0 0.167 343.6 2058.0 0.174 343.2 2059.0 0.182 342.8 2060.0 0.189 342.5 2061.0 0.197 342.1 2062.0 0.204 341.8 2063.0 0.212 341.5 2064.0 0.219 341.3 2065.0 0.227 341.0 2066.0 0.234 340.8 2067.0 0.241 340.6 2068.0 0.248 340.4 2069.0 0.256 340.2 2070.0 0.263 340.0 2071.0 0.270 339.8 2072.0 0.277 339.6 2073.0 0.284 339.5 2074.0 0.291 339.3 2075.0 0.298 339.2 2076.0 0.305 339.1 2077.0 0.312 338.9 2078.0 0.319 338.8 2079.0 0.325 338.7 2080.0 0.332 338.6 2081.0 0.339 338.5 2082.0 0.345 338.3 2083.0 0.352 338.2 2084.0 0.358 338.1 2085.0 0.364 338.1 2086.0 0.371 338.0 2087.0 0.377 337.9 2088.0 0.383 337.8 2089.0 0.389 337.7 2090.0 0.395 337.6 2091.0 0.400 337.5 2092.0 0.406 337.5 2093.0 0.412 337.4 2094.0 0.417 337.3 2095.0 0.422 337.3 2096.0 0.428 337.2 2097.0 0.433 337.1 2098.0 0.438 337.1 2099.0 0.443 337.0 2100.0 0.447 336.9 2101.0 0.452 336.9 2102.0 0.456 336.8 2103.0 0.460 336.7 2104.0 0.464 336.7 2105.0 0.468 336.6 2106.0 0.472 336.6 2107.0 0.475 336.5 2108.0 0.478 336.5 2109.0 0.481 336.4 2110.0 0.484 336.4 2111.0 0.487 336.3 2112.0 0.489 336.3 2113.0 0.491 336.2 2114.0 0.492 336.1 2115.0 0.494 336.1 2116.0 0.495 336.0 2117.0 0.495 336.0 2118.0 0.495 335.9 2119.0 0.495 335.9 2120.0 0.494 335.8 2121.0 0.493 335.8 2122.0 0.491 335.7 2123.0 0.489 335.7 2124.0 0.486 335.6 2125.0 0.482 335.6 2126.0 0.477 335.5 2127.0 0.472 335.5 2128.0 0.465 335.4 2129.0 0.458 335.4 2130.0 0.449 335.3