| WDS: | I489 | WDS ID/Discoverer |
| P: | 261.060 | Orbital period (years) |
| a: | 0.504 | Semi-major axis (arcseconds) |
| i: | 122.1 | Inclination (degrees) |
| Ω: | 96.9 | Longitude of ascending node (degrees) |
| T: | 2005.970 | Epoch of periastron passage (year) |
| e: | 0.241 | Eccentricity |
| ω: | 141.0 | Longitude of periastron (degrees) |
| Start-Year: | 1894.47 | Year |
| End-Year: | 2155.53 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for I489 |
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| Position: | 083130.94-193438.8 | Epoch-2000 right ascension and declination |
| WDS-ID: | 08315-1935 | WDS designation |
| Discoverer Code: | I489 | Discover designation and components |
| ADS number: | 6862 | Aitken Double Star catalog |
| HD number: | 72310 | HD catalog number |
| Hipparcos number: | 41817 | Hipparcos catalog number |
| V1: | 5.82 | Magnitude of the primary |
| V2: | 6.67 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2006 | 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: | Msn2009 | 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 0.404 273.29 -------------------------- 1894.47 0.584 109.20 1895.47 0.586 108.68 1896.47 0.588 108.15 1897.47 0.589 107.63 1898.47 0.590 107.11 1899.47 0.591 106.59 1900.47 0.592 106.08 1901.47 0.593 105.56 1902.47 0.594 105.05 1903.47 0.594 104.54 1904.47 0.595 104.03 1905.47 0.595 103.52 1906.47 0.595 103.01 1907.47 0.595 102.50 1908.47 0.595 101.99 1909.47 0.594 101.48 1910.47 0.594 100.96 1911.47 0.593 100.45 1912.47 0.592 99.94 1913.47 0.591 99.42 1914.47 0.590 98.90 1915.47 0.589 98.38 1916.47 0.587 97.86 1917.47 0.586 97.34 1918.47 0.584 96.81 1919.47 0.582 96.28 1920.47 0.580 95.74 1921.47 0.577 95.20 1922.47 0.575 94.66 1923.47 0.572 94.11 1924.47 0.569 93.55 1925.47 0.566 92.99 1926.47 0.563 92.43 1927.47 0.560 91.85 1928.47 0.556 91.27 1929.47 0.552 90.68 1930.47 0.548 90.09 1931.47 0.544 89.48 1932.47 0.540 88.87 1933.47 0.536 88.24 1934.47 0.531 87.61 1935.47 0.526 86.96 1936.47 0.521 86.30 1937.47 0.516 85.63 1938.47 0.511 84.95 1939.47 0.506 84.25 1940.47 0.500 83.53 1941.47 0.494 82.80 1942.47 0.488 82.05 1943.47 0.482 81.29 1944.47 0.476 80.50 1945.47 0.469 79.69 1946.47 0.463 78.86 1947.47 0.456 78.00 1948.47 0.449 77.12 1949.47 0.442 76.21 1950.47 0.435 75.28 1951.47 0.428 74.31 1952.47 0.421 73.30 1953.47 0.413 72.26 1954.47 0.405 71.18 1955.47 0.398 70.06 1956.47 0.390 68.90 1957.47 0.382 67.68 1958.47 0.374 66.42 1959.47 0.366 65.10 1960.47 0.358 63.72 1961.47 0.350 62.28 1962.47 0.342 60.76 1963.47 0.334 59.18 1964.47 0.325 57.51 1965.47 0.317 55.77 1966.47 0.309 53.93 1967.47 0.302 51.99 1968.47 0.294 49.95 1969.47 0.286 47.80 1970.47 0.279 45.54 1971.47 0.272 43.15 1972.47 0.265 40.63 1973.47 0.258 37.99 1974.47 0.252 35.21 1975.47 0.246 32.29 1976.47 0.240 29.23 1977.47 0.235 26.04 1978.47 0.231 22.72 1979.47 0.227 19.27 1980.47 0.224 15.72 1981.47 0.221 12.08 1982.47 0.220 8.36 1983.47 0.218 4.59 1984.47 0.218 0.80 1985.47 0.218 357.00 1986.47 0.219 353.22 1987.47 0.221 349.49 1988.47 0.223 345.82 1989.47 0.226 342.25 1990.47 0.230 338.77 1991.47 0.234 335.41 1992.47 0.239 332.18 1993.47 0.244 329.07 1994.47 0.249 326.09 1995.47 0.255 323.25 1996.47 0.261 320.53 1997.47 0.267 317.94 1998.47 0.274 315.47 1999.47 0.280 313.12 2000.47 0.287 310.87 2001.47 0.294 308.73 2002.47 0.300 306.68 2003.47 0.307 304.72 2004.47 0.314 302.85 2005.47 0.320 301.05 2006.47 0.327 299.33 2007.47 0.333 297.67 2008.47 0.339 296.07 2009.47 0.345 294.53 2010.47 0.351 293.04 2011.47 0.356 291.59 2012.47 0.362 290.19 2013.47 0.367 288.83 2014.47 0.371 287.50 2015.47 0.376 286.21 2016.47 0.380 284.94 2017.47 0.384 283.70 2018.47 0.387 282.48 2019.47 0.390 281.29 2020.47 0.393 280.11 2021.47 0.396 278.95 2022.47 0.398 277.81 2023.47 0.400 276.67 2024.47 0.402 275.55 2025.47 0.403 274.44 2026.47 0.404 273.33 2027.47 0.405 272.23 2028.47 0.406 271.13 2029.47 0.406 270.03 2030.47 0.406 268.93 2031.47 0.405 267.83 2032.47 0.405 266.73 2033.47 0.404 265.63 2034.47 0.403 264.52 2035.47 0.401 263.40 2036.47 0.400 262.28 2037.47 0.398 261.14 2038.47 0.396 260.00 2039.47 0.394 258.84 2040.47 0.392 257.67 2041.47 0.389 256.48 2042.47 0.386 255.28 2043.47 0.384 254.06 2044.47 0.381 252.82 2045.47 0.377 251.56 2046.47 0.374 250.29 2047.47 0.371 248.99 2048.47 0.368 247.66 2049.47 0.364 246.31 2050.47 0.361 244.94 2051.47 0.357 243.53 2052.47 0.354 242.10 2053.47 0.350 240.64 2054.47 0.346 239.15 2055.47 0.343 237.63 2056.47 0.339 236.08 2057.47 0.336 234.49 2058.47 0.332 232.87 2059.47 0.329 231.22 2060.47 0.326 229.53 2061.47 0.322 227.81 2062.47 0.319 226.05 2063.47 0.316 224.26 2064.47 0.313 222.44 2065.47 0.311 220.59 2066.47 0.308 218.70 2067.47 0.306 216.78 2068.47 0.304 214.84 2069.47 0.302 212.87 2070.47 0.300 210.87 2071.47 0.299 208.86 2072.47 0.297 206.82 2073.47 0.296 204.77 2074.47 0.295 202.70 2075.47 0.295 200.63 2076.47 0.294 198.54 2077.47 0.294 196.46 2078.47 0.295 194.37 2079.47 0.295 192.30 2080.47 0.296 190.22 2081.47 0.297 188.16 2082.47 0.298 186.12 2083.47 0.299 184.09 2084.47 0.301 182.09 2085.47 0.303 180.11 2086.47 0.305 178.15 2087.47 0.308 176.23 2088.47 0.310 174.33 2089.47 0.313 172.47 2090.47 0.316 170.65 2091.47 0.319 168.86 2092.47 0.323 167.11 2093.47 0.326 165.39 2094.47 0.330 163.71 2095.47 0.334 162.08 2096.47 0.338 160.48 2097.47 0.342 158.92 2098.47 0.347 157.39 2099.47 0.351 155.91 2100.47 0.356 154.46 2101.47 0.360 153.05 2102.47 0.365 151.68 2103.47 0.370 150.34 2104.47 0.375 149.03 2105.47 0.380 147.76 2106.47 0.385 146.53 2107.47 0.390 145.32 2108.47 0.395 144.15 2109.47 0.400 143.00 2110.47 0.405 141.88 2111.47 0.410 140.80 2112.47 0.415 139.74 2113.47 0.420 138.70 2114.47 0.426 137.69 2115.47 0.431 136.70 2116.47 0.436 135.74 2117.47 0.441 134.80 2118.47 0.446 133.88 2119.47 0.451 132.99 2120.47 0.456 132.11 2121.47 0.461 131.25 2122.47 0.466 130.41 2123.47 0.471 129.59 2124.47 0.476 128.78 2125.47 0.481 127.99 2126.47 0.485 127.22 2127.47 0.490 126.46 2128.47 0.495 125.71 2129.47 0.499 124.98 2130.47 0.504 124.26 2131.47 0.508 123.56 2132.47 0.513 122.87 2133.47 0.517 122.18 2134.47 0.521 121.51 2135.47 0.525 120.85 2136.47 0.529 120.20 2137.47 0.533 119.56 2138.47 0.537 118.93 2139.47 0.540 118.31 2140.47 0.544 117.69 2141.47 0.548 117.09 2142.47 0.551 116.49 2143.47 0.554 115.90 2144.47 0.557 115.31 2145.47 0.560 114.73 2146.47 0.563 114.16 2147.47 0.566 113.59 2148.47 0.569 113.03 2149.47 0.571 112.48 2150.47 0.574 111.93 2151.47 0.576 111.38 2152.47 0.578 110.84 2153.47 0.581 110.30 2154.47 0.582 109.77 2155.47 0.584 109.24
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 16:08:18 |