| WDS: | BU1177 | WDS ID/Discoverer |
| P: | 375.100 | Orbital period (years) |
| a: | 0.54 | Semi-major axis (arcseconds) |
| i: | 128.4 | Inclination (degrees) |
| Ω: | 23.6 | Longitude of ascending node (degrees) |
| T: | 1921.500 | Epoch of periastron passage (year) |
| e: | 0.39 | Eccentricity |
| ω: | 62.5 | Longitude of periastron (degrees) |
| Start-Year: | 1837.45 | Year |
| End-Year: | 2212.55 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for BU1177 |
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| Position: | 031852.91-010108.9 | Epoch-2000 right ascension and declination |
| WDS-ID: | 03189-0101 | WDS designation |
| Discoverer Code: | BU1177 | Discover designation and components |
| ADS number: | 2464 | Aitken Double Star catalog |
| HD number: | 20601 | HD catalog number |
| Hipparcos number: | 15430 | Hipparcos catalog number |
| V1: | 10.28 | Magnitude of the primary |
| V2: | 10.38 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2023 | Date of last observation |
| Orbit grade: | 4 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | n | Flags |
| Ephemerides: | Ephemerides | |
| Code: | Doc2025b | 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 0.620 190.38 -------------------------- 1837.45 0.425 72.43 1838.45 0.425 71.54 1839.45 0.425 70.66 1840.45 0.426 69.77 1841.45 0.426 68.89 1842.45 0.427 68.01 1843.45 0.427 67.13 1844.45 0.428 66.26 1845.45 0.428 65.38 1846.45 0.428 64.51 1847.45 0.429 63.64 1848.45 0.429 62.77 1849.45 0.430 61.90 1850.45 0.430 61.04 1851.45 0.430 60.17 1852.45 0.431 59.31 1853.45 0.431 58.45 1854.45 0.431 57.58 1855.45 0.431 56.72 1856.45 0.432 55.87 1857.45 0.432 55.01 1858.45 0.432 54.15 1859.45 0.432 53.29 1860.45 0.432 52.43 1861.45 0.432 51.58 1862.45 0.432 50.72 1863.45 0.432 49.86 1864.45 0.432 49.00 1865.45 0.431 48.14 1866.45 0.431 47.28 1867.45 0.431 46.42 1868.45 0.430 45.55 1869.45 0.430 44.69 1870.45 0.429 43.82 1871.45 0.428 42.95 1872.45 0.427 42.07 1873.45 0.426 41.19 1874.45 0.425 40.31 1875.45 0.424 39.43 1876.45 0.423 38.53 1877.45 0.422 37.64 1878.45 0.420 36.74 1879.45 0.419 35.83 1880.45 0.417 34.91 1881.45 0.415 33.99 1882.45 0.413 33.05 1883.45 0.411 32.11 1884.45 0.409 31.16 1885.45 0.407 30.20 1886.45 0.404 29.23 1887.45 0.402 28.24 1888.45 0.399 27.25 1889.45 0.396 26.23 1890.45 0.393 25.20 1891.45 0.390 24.16 1892.45 0.386 23.10 1893.45 0.383 22.01 1894.45 0.379 20.91 1895.45 0.375 19.79 1896.45 0.371 18.64 1897.45 0.367 17.46 1898.45 0.363 16.26 1899.45 0.358 15.03 1900.45 0.353 13.76 1901.45 0.349 12.46 1902.45 0.344 11.13 1903.45 0.338 9.75 1904.45 0.333 8.33 1905.45 0.328 6.87 1906.45 0.322 5.35 1907.45 0.317 3.78 1908.45 0.311 2.16 1909.45 0.305 0.47 1910.45 0.299 358.72 1911.45 0.293 356.89 1912.45 0.287 355.00 1913.45 0.281 353.02 1914.45 0.276 350.95 1915.45 0.270 348.80 1916.45 0.264 346.55 1917.45 0.258 344.20 1918.45 0.253 341.74 1919.45 0.247 339.18 1920.45 0.242 336.50 1921.45 0.237 333.71 1922.45 0.232 330.80 1923.45 0.228 327.78 1924.45 0.224 324.65 1925.45 0.221 321.41 1926.45 0.218 318.08 1927.45 0.215 314.65 1928.45 0.213 311.16 1929.45 0.212 307.60 1930.45 0.211 304.01 1931.45 0.210 300.39 1932.45 0.211 296.78 1933.45 0.211 293.18 1934.45 0.213 289.62 1935.45 0.215 286.12 1936.45 0.218 282.70 1937.45 0.221 279.36 1938.45 0.224 276.12 1939.45 0.228 273.00 1940.45 0.233 269.98 1941.45 0.238 267.09 1942.45 0.243 264.32 1943.45 0.249 261.67 1944.45 0.254 259.13 1945.45 0.260 256.72 1946.45 0.267 254.41 1947.45 0.273 252.22 1948.45 0.280 250.12 1949.45 0.287 248.13 1950.45 0.294 246.22 1951.45 0.300 244.41 1952.45 0.308 242.68 1953.45 0.315 241.02 1954.45 0.322 239.44 1955.45 0.329 237.93 1956.45 0.336 236.48 1957.45 0.343 235.09 1958.45 0.350 233.75 1959.45 0.357 232.47 1960.45 0.364 231.24 1961.45 0.371 230.06 1962.45 0.378 228.92 1963.45 0.385 227.81 1964.45 0.391 226.75 1965.45 0.398 225.72 1966.45 0.405 224.73 1967.45 0.411 223.77 1968.45 0.418 222.84 1969.45 0.424 221.93 1970.45 0.430 221.06 1971.45 0.436 220.20 1972.45 0.442 219.37 1973.45 0.448 218.57 1974.45 0.454 217.78 1975.45 0.460 217.01 1976.45 0.465 216.26 1977.45 0.471 215.53 1978.45 0.476 214.82 1979.45 0.482 214.12 1980.45 0.487 213.44 1981.45 0.492 212.77 1982.45 0.497 212.11 1983.45 0.502 211.47 1984.45 0.506 210.84 1985.45 0.511 210.22 1986.45 0.516 209.62 1987.45 0.520 209.02 1988.45 0.524 208.43 1989.45 0.529 207.86 1990.45 0.533 207.29 1991.45 0.537 206.73 1992.45 0.541 206.18 1993.45 0.545 205.63 1994.45 0.548 205.10 1995.45 0.552 204.57 1996.45 0.555 204.05 1997.45 0.559 203.53 1998.45 0.562 203.02 1999.45 0.565 202.52 2000.45 0.569 202.02 2001.45 0.572 201.53 2002.45 0.575 201.04 2003.45 0.577 200.56 2004.45 0.580 200.08 2005.45 0.583 199.61 2006.45 0.586 199.14 2007.45 0.588 198.67 2008.45 0.590 198.21 2009.45 0.593 197.75 2010.45 0.595 197.30 2011.45 0.597 196.85 2012.45 0.599 196.40 2013.45 0.601 195.96 2014.45 0.603 195.52 2015.45 0.605 195.08 2016.45 0.607 194.64 2017.45 0.609 194.21 2018.45 0.610 193.78 2019.45 0.612 193.35 2020.45 0.613 192.92 2021.45 0.614 192.50 2022.45 0.616 192.07 2023.45 0.617 191.65 2024.45 0.618 191.23 2025.45 0.619 190.82 2026.45 0.620 190.40 2027.45 0.621 189.98 2028.45 0.622 189.57 2029.45 0.623 189.16 2030.45 0.624 188.74 2031.45 0.624 188.33 2032.45 0.625 187.92 2033.45 0.626 187.51 2034.45 0.626 187.10 2035.45 0.626 186.70 2036.45 0.627 186.29 2037.45 0.627 185.88 2038.45 0.627 185.47 2039.45 0.628 185.07 2040.45 0.628 184.66 2041.45 0.628 184.25 2042.45 0.628 183.85 2043.45 0.628 183.44 2044.45 0.628 183.04 2045.45 0.627 182.63 2046.45 0.627 182.22 2047.45 0.627 181.82 2048.45 0.627 181.41 2049.45 0.626 181.00 2050.45 0.626 180.59 2051.45 0.625 180.18 2052.45 0.625 179.77 2053.45 0.624 179.36 2054.45 0.624 178.95 2055.45 0.623 178.54 2056.45 0.622 178.13 2057.45 0.622 177.71 2058.45 0.621 177.30 2059.45 0.620 176.88 2060.45 0.619 176.47 2061.45 0.618 176.05 2062.45 0.617 175.63 2063.45 0.616 175.21 2064.45 0.615 174.79 2065.45 0.614 174.36 2066.45 0.613 173.94 2067.45 0.612 173.51 2068.45 0.611 173.08 2069.45 0.610 172.65 2070.45 0.608 172.22 2071.45 0.607 171.79 2072.45 0.606 171.35 2073.45 0.604 170.91 2074.45 0.603 170.48 2075.45 0.601 170.03 2076.45 0.600 169.59 2077.45 0.598 169.14 2078.45 0.597 168.70 2079.45 0.595 168.25 2080.45 0.594 167.79 2081.45 0.592 167.34 2082.45 0.591 166.88 2083.45 0.589 166.42 2084.45 0.587 165.96 2085.45 0.586 165.49 2086.45 0.584 165.02 2087.45 0.582 164.55 2088.45 0.580 164.08 2089.45 0.578 163.60 2090.45 0.577 163.12 2091.45 0.575 162.64 2092.45 0.573 162.15 2093.45 0.571 161.66 2094.45 0.569 161.17 2095.45 0.567 160.67 2096.45 0.565 160.17 2097.45 0.563 159.67 2098.45 0.561 159.17 2099.45 0.559 158.66 2100.45 0.557 158.14 2101.45 0.555 157.63 2102.45 0.553 157.10 2103.45 0.551 156.58 2104.45 0.549 156.05 2105.45 0.547 155.52 2106.45 0.545 154.98 2107.45 0.543 154.44 2108.45 0.541 153.89 2109.45 0.539 153.35 2110.45 0.537 152.79 2111.45 0.535 152.23 2112.45 0.532 151.67 2113.45 0.530 151.10 2114.45 0.528 150.53 2115.45 0.526 149.96 2116.45 0.524 149.38 2117.45 0.522 148.79 2118.45 0.520 148.20 2119.45 0.518 147.60 2120.45 0.515 147.00 2121.45 0.513 146.40 2122.45 0.511 145.79 2123.45 0.509 145.17 2124.45 0.507 144.55 2125.45 0.505 143.93 2126.45 0.503 143.30 2127.45 0.501 142.66 2128.45 0.499 142.02 2129.45 0.497 141.38 2130.45 0.495 140.72 2131.45 0.492 140.07 2132.45 0.490 139.40 2133.45 0.488 138.74 2134.45 0.486 138.06 2135.45 0.484 137.38 2136.45 0.482 136.70 2137.45 0.481 136.01 2138.45 0.479 135.31 2139.45 0.477 134.61 2140.45 0.475 133.90 2141.45 0.473 133.19 2142.45 0.471 132.47 2143.45 0.469 131.75 2144.45 0.467 131.02 2145.45 0.466 130.28 2146.45 0.464 129.54 2147.45 0.462 128.79 2148.45 0.460 128.04 2149.45 0.459 127.28 2150.45 0.457 126.52 2151.45 0.455 125.75 2152.45 0.454 124.97 2153.45 0.452 124.19 2154.45 0.451 123.41 2155.45 0.449 122.62 2156.45 0.448 121.82 2157.45 0.446 121.02 2158.45 0.445 120.21 2159.45 0.443 119.40 2160.45 0.442 118.58 2161.45 0.441 117.76 2162.45 0.440 116.94 2163.45 0.438 116.11 2164.45 0.437 115.27 2165.45 0.436 114.43 2166.45 0.435 113.59 2167.45 0.434 112.74 2168.45 0.433 111.88 2169.45 0.432 111.03 2170.45 0.431 110.17 2171.45 0.430 109.30 2172.45 0.429 108.43 2173.45 0.428 107.56 2174.45 0.427 106.69 2175.45 0.427 105.81 2176.45 0.426 104.93 2177.45 0.425 104.04 2178.45 0.425 103.16 2179.45 0.424 102.27 2180.45 0.423 101.37 2181.45 0.423 100.48 2182.45 0.422 99.58 2183.45 0.422 98.69 2184.45 0.422 97.79 2185.45 0.421 96.88 2186.45 0.421 95.98 2187.45 0.421 95.08 2188.45 0.420 94.17 2189.45 0.420 93.27 2190.45 0.420 92.36 2191.45 0.420 91.45 2192.45 0.420 90.55 2193.45 0.420 89.64 2194.45 0.420 88.73 2195.45 0.420 87.82 2196.45 0.420 86.92 2197.45 0.420 86.01 2198.45 0.420 85.10 2199.45 0.420 84.19 2200.45 0.421 83.29 2201.45 0.421 82.38 2202.45 0.421 81.48 2203.45 0.421 80.58 2204.45 0.422 79.68 2205.45 0.422 78.78 2206.45 0.422 77.88 2207.45 0.423 76.98 2208.45 0.423 76.09 2209.45 0.423 75.19 2210.45 0.424 74.30 2211.45 0.424 73.41 2212.45 0.425 72.52
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 15:09:40 |