| WDS: | A1801 | WDS ID/Discoverer |
| P: | 229.000 | Orbital period (years) |
| a: | 0.435 | Semi-major axis (arcseconds) |
| i: | 94.1 | Inclination (degrees) |
| Ω: | 195.9 | Longitude of ascending node (degrees) |
| T: | 2020.000 | Epoch of periastron passage (year) |
| e: | 0.132 | Eccentricity |
| ω: | 151.4 | Longitude of periastron (degrees) |
| Start-Year: | 1910.5 | Year |
| End-Year: | 2139.5 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for A1801 |
||
| Position: | 000957.47+083437.3 | Epoch-2000 right ascension and declination |
| WDS-ID: | 00100+0835 | WDS designation |
| Discoverer Code: | A1801 | Discover designation and components |
| ADS number: | 120 | Aitken Double Star catalog |
| HD number: | . | HD catalog number |
| Hipparcos number: | 807 | Hipparcos catalog number |
| V1: | 9.5 | Magnitude of the primary |
| V2: | 9.5 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2021 | Date of last observation |
| Orbit grade: | 4 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | Flags | |
| Ephemerides: | Ephemerides | |
| Code: | Tok2021c | Reference |
-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --
| Green plus signs: | Visual (micrometric) measures |
| Violet asterisks: | Photographic measures |
| Blue symbols: | Various interferometric techniques |
| Dot-dash line: | Indicates the line of nodes |
Year Sep[“] PA[°] --------------------------------------------- 2026.50 0.366 17.01 -------------------------- 1910.50 0.455 197.60 1911.50 0.458 197.50 1912.50 0.462 197.40 1913.50 0.465 197.30 1914.50 0.468 197.20 1915.50 0.471 197.11 1916.50 0.473 197.01 1917.50 0.476 196.92 1918.50 0.478 196.83 1919.50 0.479 196.73 1920.50 0.481 196.64 1921.50 0.482 196.55 1922.50 0.483 196.46 1923.50 0.484 196.37 1924.50 0.484 196.28 1925.50 0.485 196.19 1926.50 0.484 196.10 1927.50 0.484 196.01 1928.50 0.484 195.92 1929.50 0.483 195.83 1930.50 0.482 195.74 1931.50 0.480 195.65 1932.50 0.479 195.56 1933.50 0.477 195.46 1934.50 0.475 195.37 1935.50 0.472 195.28 1936.50 0.470 195.18 1937.50 0.467 195.09 1938.50 0.463 194.99 1939.50 0.460 194.89 1940.50 0.456 194.79 1941.50 0.452 194.69 1942.50 0.448 194.58 1943.50 0.443 194.48 1944.50 0.438 194.37 1945.50 0.433 194.26 1946.50 0.428 194.14 1947.50 0.422 194.03 1948.50 0.416 193.91 1949.50 0.410 193.78 1950.50 0.404 193.66 1951.50 0.397 193.52 1952.50 0.390 193.39 1953.50 0.383 193.25 1954.50 0.376 193.10 1955.50 0.368 192.95 1956.50 0.360 192.79 1957.50 0.352 192.62 1958.50 0.344 192.45 1959.50 0.335 192.27 1960.50 0.326 192.07 1961.50 0.317 191.87 1962.50 0.308 191.66 1963.50 0.299 191.43 1964.50 0.289 191.18 1965.50 0.279 190.92 1966.50 0.269 190.64 1967.50 0.259 190.34 1968.50 0.248 190.01 1969.50 0.238 189.65 1970.50 0.227 189.26 1971.50 0.216 188.83 1972.50 0.205 188.35 1973.50 0.193 187.82 1974.50 0.182 187.22 1975.50 0.170 186.54 1976.50 0.159 185.76 1977.50 0.147 184.85 1978.50 0.135 183.79 1979.50 0.123 182.52 1980.50 0.111 180.99 1981.50 0.099 179.08 1982.50 0.087 176.65 1983.50 0.076 173.46 1984.50 0.064 169.11 1985.50 0.053 162.92 1986.50 0.043 153.65 1987.50 0.035 139.33 1988.50 0.029 118.16 1989.50 0.029 93.04 1990.50 0.034 71.79 1991.50 0.043 57.39 1992.50 0.053 48.07 1993.50 0.064 41.85 1994.50 0.075 37.48 1995.50 0.087 34.28 1996.50 0.099 31.84 1997.50 0.111 29.92 1998.50 0.123 28.38 1999.50 0.135 27.10 2000.50 0.146 26.03 2001.50 0.158 25.12 2002.50 0.169 24.33 2003.50 0.181 23.65 2004.50 0.192 23.04 2005.50 0.203 22.50 2006.50 0.214 22.01 2007.50 0.224 21.57 2008.50 0.235 21.17 2009.50 0.245 20.80 2010.50 0.254 20.47 2011.50 0.264 20.15 2012.50 0.273 19.86 2013.50 0.282 19.59 2014.50 0.291 19.33 2015.50 0.299 19.09 2016.50 0.307 18.86 2017.50 0.314 18.64 2018.50 0.322 18.43 2019.50 0.328 18.23 2020.50 0.335 18.04 2021.50 0.341 17.85 2022.50 0.347 17.67 2023.50 0.352 17.50 2024.50 0.357 17.33 2025.50 0.362 17.17 2026.50 0.366 17.01 2027.50 0.369 16.86 2028.50 0.373 16.70 2029.50 0.375 16.55 2030.50 0.378 16.40 2031.50 0.380 16.26 2032.50 0.381 16.11 2033.50 0.383 15.97 2034.50 0.383 15.82 2035.50 0.384 15.68 2036.50 0.384 15.54 2037.50 0.383 15.39 2038.50 0.382 15.25 2039.50 0.381 15.10 2040.50 0.379 14.96 2041.50 0.377 14.81 2042.50 0.375 14.66 2043.50 0.372 14.51 2044.50 0.368 14.36 2045.50 0.365 14.20 2046.50 0.361 14.04 2047.50 0.356 13.87 2048.50 0.352 13.71 2049.50 0.347 13.53 2050.50 0.341 13.36 2051.50 0.335 13.17 2052.50 0.329 12.98 2053.50 0.323 12.78 2054.50 0.316 12.58 2055.50 0.310 12.36 2056.50 0.302 12.14 2057.50 0.295 11.90 2058.50 0.287 11.65 2059.50 0.279 11.39 2060.50 0.271 11.11 2061.50 0.263 10.81 2062.50 0.254 10.50 2063.50 0.245 10.16 2064.50 0.236 9.79 2065.50 0.227 9.40 2066.50 0.217 8.97 2067.50 0.208 8.51 2068.50 0.198 7.99 2069.50 0.188 7.43 2070.50 0.178 6.80 2071.50 0.168 6.10 2072.50 0.158 5.31 2073.50 0.148 4.40 2074.50 0.137 3.37 2075.50 0.127 2.16 2076.50 0.117 0.74 2077.50 0.106 359.03 2078.50 0.096 356.96 2079.50 0.086 354.39 2080.50 0.075 351.12 2081.50 0.066 346.86 2082.50 0.056 341.12 2083.50 0.047 333.20 2084.50 0.040 322.05 2085.50 0.035 306.74 2086.50 0.033 287.82 2087.50 0.034 268.60 2088.50 0.039 252.69 2089.50 0.046 240.99 2090.50 0.055 232.67 2091.50 0.064 226.68 2092.50 0.074 222.24 2093.50 0.084 218.85 2094.50 0.094 216.20 2095.50 0.105 214.07 2096.50 0.115 212.32 2097.50 0.126 210.87 2098.50 0.136 209.64 2099.50 0.147 208.58 2100.50 0.157 207.67 2101.50 0.167 206.86 2102.50 0.178 206.16 2103.50 0.188 205.52 2104.50 0.198 204.96 2105.50 0.208 204.44 2106.50 0.218 203.98 2107.50 0.228 203.55 2108.50 0.237 203.16 2109.50 0.247 202.80 2110.50 0.256 202.47 2111.50 0.266 202.16 2112.50 0.275 201.87 2113.50 0.284 201.60 2114.50 0.293 201.35 2115.50 0.301 201.11 2116.50 0.310 200.88 2117.50 0.318 200.67 2118.50 0.327 200.47 2119.50 0.335 200.27 2120.50 0.343 200.09 2121.50 0.350 199.91 2122.50 0.358 199.75 2123.50 0.365 199.59 2124.50 0.372 199.43 2125.50 0.379 199.28 2126.50 0.386 199.14 2127.50 0.393 199.00 2128.50 0.399 198.86 2129.50 0.405 198.73 2130.50 0.411 198.61 2131.50 0.417 198.48 2132.50 0.422 198.36 2133.50 0.428 198.25 2134.50 0.433 198.13 2135.50 0.438 198.02 2136.50 0.442 197.91 2137.50 0.447 197.81 2138.50 0.451 197.70
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 14:36:00 |