| WDS: | B644 | WDS ID/Discoverer |
| P: | 473.400 | Orbital period (years) |
| a: | 0.366 | Semi-major axis (arcseconds) |
| i: | 51.4 | Inclination (degrees) |
| Ω: | 341.6 | Longitude of ascending node (degrees) |
| T: | 2460.040 | Epoch of periastron passage (year) |
| e: | 0.233 | Eccentricity |
| ω: | 343.5 | Longitude of periastron (degrees) |
| Start-Year: | 1788.3 | Year |
| End-Year: | 2261.7 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for B644 |
||
| Position: | 005320.22-453020.7 | Epoch-2000 right ascension and declination |
| WDS-ID: | 00533-4530 | WDS designation |
| Discoverer Code: | B644 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 5218 | HD catalog number |
| Hipparcos number: | 4177 | Hipparcos catalog number |
| V1: | 9.05 | Magnitude of the primary |
| V2: | 9.05 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2018 | 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: | USN2019 | 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 0.273 2.48 -------------------------- 1788.30 0.444 163.07 1789.30 0.443 163.39 1790.30 0.443 163.70 1791.30 0.442 164.02 1792.30 0.442 164.34 1793.30 0.441 164.65 1794.30 0.440 164.97 1795.30 0.440 165.29 1796.30 0.439 165.61 1797.30 0.438 165.93 1798.30 0.438 166.25 1799.30 0.437 166.58 1800.30 0.436 166.90 1801.30 0.435 167.23 1802.30 0.434 167.55 1803.30 0.433 167.88 1804.30 0.432 168.21 1805.30 0.431 168.54 1806.30 0.430 168.88 1807.30 0.429 169.21 1808.30 0.428 169.55 1809.30 0.427 169.89 1810.30 0.426 170.23 1811.30 0.425 170.57 1812.30 0.424 170.91 1813.30 0.422 171.26 1814.30 0.421 171.60 1815.30 0.420 171.95 1816.30 0.419 172.30 1817.30 0.417 172.66 1818.30 0.416 173.01 1819.30 0.414 173.37 1820.30 0.413 173.73 1821.30 0.412 174.10 1822.30 0.410 174.46 1823.30 0.409 174.83 1824.30 0.407 175.20 1825.30 0.405 175.58 1826.30 0.404 175.96 1827.30 0.402 176.34 1828.30 0.401 176.72 1829.30 0.399 177.11 1830.30 0.397 177.50 1831.30 0.395 177.89 1832.30 0.394 178.29 1833.30 0.392 178.69 1834.30 0.390 179.09 1835.30 0.388 179.50 1836.30 0.386 179.91 1837.30 0.384 180.33 1838.30 0.383 180.75 1839.30 0.381 181.17 1840.30 0.379 181.60 1841.30 0.377 182.04 1842.30 0.375 182.47 1843.30 0.372 182.92 1844.30 0.370 183.36 1845.30 0.368 183.82 1846.30 0.366 184.28 1847.30 0.364 184.74 1848.30 0.362 185.21 1849.30 0.360 185.68 1850.30 0.357 186.16 1851.30 0.355 186.65 1852.30 0.353 187.14 1853.30 0.351 187.64 1854.30 0.348 188.15 1855.30 0.346 188.66 1856.30 0.344 189.18 1857.30 0.341 189.71 1858.30 0.339 190.24 1859.30 0.337 190.79 1860.30 0.334 191.33 1861.30 0.332 191.89 1862.30 0.329 192.46 1863.30 0.327 193.03 1864.30 0.324 193.62 1865.30 0.322 194.21 1866.30 0.319 194.81 1867.30 0.317 195.42 1868.30 0.314 196.04 1869.30 0.312 196.67 1870.30 0.309 197.31 1871.30 0.307 197.96 1872.30 0.304 198.63 1873.30 0.302 199.30 1874.30 0.299 199.99 1875.30 0.296 200.68 1876.30 0.294 201.39 1877.30 0.291 202.12 1878.30 0.289 202.85 1879.30 0.286 203.60 1880.30 0.284 204.36 1881.30 0.281 205.14 1882.30 0.278 205.93 1883.30 0.276 206.73 1884.30 0.273 207.55 1885.30 0.271 208.39 1886.30 0.268 209.24 1887.30 0.266 210.10 1888.30 0.263 210.99 1889.30 0.261 211.89 1890.30 0.258 212.81 1891.30 0.256 213.74 1892.30 0.253 214.70 1893.30 0.251 215.67 1894.30 0.249 216.66 1895.30 0.246 217.67 1896.30 0.244 218.70 1897.30 0.242 219.75 1898.30 0.239 220.81 1899.30 0.237 221.90 1900.30 0.235 223.01 1901.30 0.233 224.14 1902.30 0.231 225.29 1903.30 0.229 226.46 1904.30 0.227 227.65 1905.30 0.225 228.87 1906.30 0.223 230.10 1907.30 0.221 231.35 1908.30 0.219 232.63 1909.30 0.218 233.92 1910.30 0.216 235.24 1911.30 0.214 236.57 1912.30 0.213 237.92 1913.30 0.212 239.30 1914.30 0.210 240.69 1915.30 0.209 242.09 1916.30 0.208 243.52 1917.30 0.207 244.96 1918.30 0.206 246.42 1919.30 0.205 247.89 1920.30 0.204 249.37 1921.30 0.203 250.87 1922.30 0.202 252.37 1923.30 0.202 253.89 1924.30 0.201 255.41 1925.30 0.201 256.95 1926.30 0.200 258.48 1927.30 0.200 260.03 1928.30 0.200 261.57 1929.30 0.200 263.12 1930.30 0.200 264.66 1931.30 0.200 266.21 1932.30 0.200 267.75 1933.30 0.201 269.29 1934.30 0.201 270.83 1935.30 0.201 272.35 1936.30 0.202 273.87 1937.30 0.203 275.38 1938.30 0.203 276.88 1939.30 0.204 278.37 1940.30 0.205 279.85 1941.30 0.206 281.31 1942.30 0.207 282.76 1943.30 0.208 284.20 1944.30 0.209 285.62 1945.30 0.210 287.02 1946.30 0.212 288.41 1947.30 0.213 289.78 1948.30 0.214 291.13 1949.30 0.216 292.47 1950.30 0.217 293.79 1951.30 0.219 295.09 1952.30 0.220 296.37 1953.30 0.222 297.63 1954.30 0.224 298.88 1955.30 0.225 300.11 1956.30 0.227 301.32 1957.30 0.229 302.51 1958.30 0.230 303.68 1959.30 0.232 304.84 1960.30 0.234 305.98 1961.30 0.235 307.11 1962.30 0.237 308.21 1963.30 0.239 309.30 1964.30 0.241 310.38 1965.30 0.242 311.44 1966.30 0.244 312.48 1967.30 0.246 313.51 1968.30 0.248 314.53 1969.30 0.249 315.53 1970.30 0.251 316.52 1971.30 0.253 317.49 1972.30 0.254 318.46 1973.30 0.256 319.41 1974.30 0.257 320.35 1975.30 0.259 321.27 1976.30 0.260 322.19 1977.30 0.262 323.10 1978.30 0.263 323.99 1979.30 0.265 324.88 1980.30 0.266 325.76 1981.30 0.267 326.62 1982.30 0.269 327.48 1983.30 0.270 328.34 1984.30 0.271 329.18 1985.30 0.272 330.02 1986.30 0.273 330.85 1987.30 0.274 331.67 1988.30 0.275 332.49 1989.30 0.276 333.30 1990.30 0.277 334.11 1991.30 0.278 334.91 1992.30 0.279 335.71 1993.30 0.280 336.50 1994.30 0.280 337.29 1995.30 0.281 338.08 1996.30 0.281 338.86 1997.30 0.282 339.64 1998.30 0.282 340.41 1999.30 0.283 341.19 2000.30 0.283 341.96 2001.30 0.283 342.73 2002.30 0.284 343.50 2003.30 0.284 344.27 2004.30 0.284 345.03 2005.30 0.284 345.80 2006.30 0.284 346.57 2007.30 0.284 347.34 2008.30 0.284 348.10 2009.30 0.284 348.87 2010.30 0.283 349.64 2011.30 0.283 350.41 2012.30 0.283 351.18 2013.30 0.282 351.96 2014.30 0.282 352.73 2015.30 0.282 353.51 2016.30 0.281 354.29 2017.30 0.280 355.08 2018.30 0.280 355.86 2019.30 0.279 356.66 2020.30 0.278 357.45 2021.30 0.278 358.25 2022.30 0.277 359.05 2023.30 0.276 359.86 2024.30 0.275 0.67 2025.30 0.274 1.49 2026.30 0.274 2.31 2027.30 0.273 3.14 2028.30 0.272 3.98 2029.30 0.271 4.82 2030.30 0.270 5.66 2031.30 0.269 6.52 2032.30 0.268 7.38 2033.30 0.266 8.24 2034.30 0.265 9.12 2035.30 0.264 10.00 2036.30 0.263 10.89 2037.30 0.262 11.79 2038.30 0.261 12.69 2039.30 0.260 13.61 2040.30 0.258 14.53 2041.30 0.257 15.46 2042.30 0.256 16.40 2043.30 0.255 17.34 2044.30 0.254 18.30 2045.30 0.252 19.27 2046.30 0.251 20.24 2047.30 0.250 21.22 2048.30 0.249 22.22 2049.30 0.248 23.22 2050.30 0.247 24.23 2051.30 0.245 25.25 2052.30 0.244 26.29 2053.30 0.243 27.33 2054.30 0.242 28.38 2055.30 0.241 29.43 2056.30 0.240 30.50 2057.30 0.239 31.58 2058.30 0.238 32.67 2059.30 0.237 33.76 2060.30 0.236 34.87 2061.30 0.235 35.98 2062.30 0.234 37.10 2063.30 0.234 38.23 2064.30 0.233 39.36 2065.30 0.232 40.51 2066.30 0.231 41.66 2067.30 0.231 42.81 2068.30 0.230 43.98 2069.30 0.230 45.15 2070.30 0.229 46.32 2071.30 0.229 47.50 2072.30 0.228 48.68 2073.30 0.228 49.87 2074.30 0.228 51.06 2075.30 0.227 52.26 2076.30 0.227 53.45 2077.30 0.227 54.65 2078.30 0.227 55.85 2079.30 0.227 57.05 2080.30 0.227 58.25 2081.30 0.227 59.45 2082.30 0.227 60.65 2083.30 0.227 61.84 2084.30 0.228 63.04 2085.30 0.228 64.23 2086.30 0.228 65.41 2087.30 0.229 66.60 2088.30 0.229 67.78 2089.30 0.230 68.95 2090.30 0.230 70.12 2091.30 0.231 71.28 2092.30 0.232 72.43 2093.30 0.233 73.58 2094.30 0.233 74.72 2095.30 0.234 75.85 2096.30 0.235 76.97 2097.30 0.236 78.08 2098.30 0.237 79.19 2099.30 0.238 80.28 2100.30 0.239 81.37 2101.30 0.240 82.44 2102.30 0.242 83.50 2103.30 0.243 84.56 2104.30 0.244 85.60 2105.30 0.246 86.63 2106.30 0.247 87.65 2107.30 0.248 88.65 2108.30 0.250 89.65 2109.30 0.251 90.63 2110.30 0.253 91.60 2111.30 0.255 92.56 2112.30 0.256 93.51 2113.30 0.258 94.45 2114.30 0.259 95.37 2115.30 0.261 96.29 2116.30 0.263 97.19 2117.30 0.265 98.07 2118.30 0.266 98.95 2119.30 0.268 99.82 2120.30 0.270 100.67 2121.30 0.272 101.51 2122.30 0.274 102.34 2123.30 0.276 103.16 2124.30 0.278 103.97 2125.30 0.280 104.76 2126.30 0.282 105.55 2127.30 0.284 106.32 2128.30 0.285 107.09 2129.30 0.287 107.84 2130.30 0.290 108.58 2131.30 0.292 109.31 2132.30 0.294 110.04 2133.30 0.296 110.75 2134.30 0.298 111.45 2135.30 0.300 112.14 2136.30 0.302 112.83 2137.30 0.304 113.50 2138.30 0.306 114.16 2139.30 0.308 114.82 2140.30 0.310 115.47 2141.30 0.312 116.11 2142.30 0.314 116.74 2143.30 0.316 117.36 2144.30 0.318 117.97 2145.30 0.321 118.58 2146.30 0.323 119.17 2147.30 0.325 119.76 2148.30 0.327 120.35 2149.30 0.329 120.92 2150.30 0.331 121.49 2151.30 0.333 122.05 2152.30 0.335 122.60 2153.30 0.337 123.15 2154.30 0.339 123.69 2155.30 0.341 124.22 2156.30 0.343 124.75 2157.30 0.345 125.27 2158.30 0.347 125.79 2159.30 0.349 126.30 2160.30 0.351 126.80 2161.30 0.353 127.30 2162.30 0.355 127.79 2163.30 0.357 128.28 2164.30 0.359 128.76 2165.30 0.361 129.24 2166.30 0.363 129.71 2167.30 0.365 130.18 2168.30 0.367 130.64 2169.30 0.369 131.09 2170.30 0.371 131.55 2171.30 0.372 131.99 2172.30 0.374 132.44 2173.30 0.376 132.88 2174.30 0.378 133.31 2175.30 0.380 133.74 2176.30 0.381 134.17 2177.30 0.383 134.59 2178.30 0.385 135.01 2179.30 0.387 135.43 2180.30 0.388 135.84 2181.30 0.390 136.25 2182.30 0.392 136.65 2183.30 0.393 137.05 2184.30 0.395 137.45 2185.30 0.397 137.84 2186.30 0.398 138.24 2187.30 0.400 138.62 2188.30 0.401 139.01 2189.30 0.403 139.39 2190.30 0.404 139.77 2191.30 0.406 140.15 2192.30 0.407 140.52 2193.30 0.409 140.89 2194.30 0.410 141.26 2195.30 0.411 141.63 2196.30 0.413 141.99 2197.30 0.414 142.36 2198.30 0.415 142.72 2199.30 0.417 143.07 2200.30 0.418 143.43 2201.30 0.419 143.78 2202.30 0.420 144.13 2203.30 0.422 144.48 2204.30 0.423 144.83 2205.30 0.424 145.17 2206.30 0.425 145.51 2207.30 0.426 145.86 2208.30 0.427 146.20 2209.30 0.428 146.53 2210.30 0.429 146.87 2211.30 0.430 147.20 2212.30 0.431 147.54 2213.30 0.432 147.87 2214.30 0.433 148.20 2215.30 0.434 148.53 2216.30 0.435 148.86 2217.30 0.436 149.18 2218.30 0.436 149.51 2219.30 0.437 149.83 2220.30 0.438 150.15 2221.30 0.439 150.48 2222.30 0.439 150.80 2223.30 0.440 151.12 2224.30 0.441 151.44 2225.30 0.441 151.75 2226.30 0.442 152.07 2227.30 0.442 152.39 2228.30 0.443 152.70 2229.30 0.443 153.02 2230.30 0.444 153.33 2231.30 0.444 153.64 2232.30 0.445 153.96 2233.30 0.445 154.27 2234.30 0.445 154.58 2235.30 0.446 154.89 2236.30 0.446 155.20 2237.30 0.446 155.51 2238.30 0.447 155.82 2239.30 0.447 156.13 2240.30 0.447 156.44 2241.30 0.447 156.75 2242.30 0.447 157.06 2243.30 0.447 157.37 2244.30 0.447 157.68 2245.30 0.448 157.99 2246.30 0.448 158.30 2247.30 0.447 158.60 2248.30 0.447 158.91 2249.30 0.447 159.22 2250.30 0.447 159.53 2251.30 0.447 159.84 2252.30 0.447 160.15 2253.30 0.447 160.46 2254.30 0.446 160.77 2255.30 0.446 161.08 2256.30 0.446 161.39 2257.30 0.446 161.70 2258.30 0.445 162.01 2259.30 0.445 162.32 2260.30 0.444 162.64 2261.30 0.444 162.95
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 14:44:48 |