| WDS: | I666 | WDS ID/Discoverer |
| P: | 212.900 | Orbital period (years) |
| a: | 0.475 | Semi-major axis (arcseconds) |
| i: | 57.4 | Inclination (degrees) |
| Ω: | 169.7 | Longitude of ascending node (degrees) |
| T: | 1987.430 | Epoch of periastron passage (year) |
| e: | 0.752 | Eccentricity |
| ω: | 2.9 | Longitude of periastron (degrees) |
| Start-Year: | 1918.55 | Year |
| End-Year: | 2131.45 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for I666 |
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| Position: | 204503.37-234538.3 | Epoch-2000 right ascension and declination |
| WDS-ID: | 20451-2346 | WDS designation |
| Discoverer Code: | I666 | Discover designation and components |
| ADS number: | 14224 | Aitken Double Star catalog |
| HD number: | 197539 | HD catalog number |
| Hipparcos number: | . | Hipparcos catalog number |
| V1: | 8.9 | Magnitude of the primary |
| V2: | 9.1 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2018 | Date of last observation |
| Orbit grade: | 3 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | Flags | |
| Ephemerides: | Ephemerides | |
| Code: | Tok2022g | 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 0.533 333.65 -------------------------- 1918.55 0.734 359.29 1919.55 0.729 359.54 1920.55 0.724 359.80 1921.55 0.718 0.06 1922.55 0.713 0.32 1923.55 0.707 0.59 1924.55 0.701 0.86 1925.55 0.695 1.14 1926.55 0.689 1.42 1927.55 0.683 1.71 1928.55 0.676 2.00 1929.55 0.670 2.30 1930.55 0.663 2.61 1931.55 0.656 2.92 1932.55 0.649 3.24 1933.55 0.641 3.57 1934.55 0.634 3.90 1935.55 0.626 4.24 1936.55 0.618 4.59 1937.55 0.610 4.95 1938.55 0.602 5.32 1939.55 0.594 5.70 1940.55 0.585 6.09 1941.55 0.577 6.49 1942.55 0.568 6.90 1943.55 0.559 7.33 1944.55 0.550 7.77 1945.55 0.540 8.23 1946.55 0.531 8.70 1947.55 0.521 9.19 1948.55 0.511 9.70 1949.55 0.501 10.23 1950.55 0.490 10.78 1951.55 0.479 11.36 1952.55 0.469 11.96 1953.55 0.458 12.59 1954.55 0.446 13.25 1955.55 0.435 13.95 1956.55 0.423 14.69 1957.55 0.411 15.47 1958.55 0.399 16.30 1959.55 0.386 17.18 1960.55 0.374 18.11 1961.55 0.361 19.12 1962.55 0.348 20.20 1963.55 0.334 21.36 1964.55 0.321 22.63 1965.55 0.307 24.01 1966.55 0.293 25.51 1967.55 0.278 27.18 1968.55 0.264 29.02 1969.55 0.249 31.08 1970.55 0.234 33.40 1971.55 0.220 36.03 1972.55 0.205 39.04 1973.55 0.190 42.53 1974.55 0.175 46.62 1975.55 0.161 51.43 1976.55 0.147 57.17 1977.55 0.134 64.04 1978.55 0.123 72.26 1979.55 0.114 81.98 1980.55 0.107 93.14 1981.55 0.104 105.40 1982.55 0.104 118.08 1983.55 0.106 130.45 1984.55 0.110 142.01 1985.55 0.115 152.68 1986.55 0.118 162.68 1987.55 0.118 172.44 1988.55 0.114 182.49 1989.55 0.109 193.36 1990.55 0.103 205.48 1991.55 0.099 218.89 1992.55 0.097 233.09 1993.55 0.100 247.05 1994.55 0.107 259.73 1995.55 0.117 270.56 1996.55 0.130 279.50 1997.55 0.144 286.77 1998.55 0.159 292.71 1999.55 0.175 297.60 2000.55 0.190 301.67 2001.55 0.207 305.12 2002.55 0.223 308.07 2003.55 0.238 310.62 2004.55 0.254 312.86 2005.55 0.270 314.83 2006.55 0.285 316.60 2007.55 0.300 318.18 2008.55 0.315 319.62 2009.55 0.329 320.93 2010.55 0.343 322.13 2011.55 0.357 323.23 2012.55 0.371 324.26 2013.55 0.384 325.21 2014.55 0.397 326.10 2015.55 0.410 326.93 2016.55 0.422 327.71 2017.55 0.434 328.45 2018.55 0.446 329.15 2019.55 0.458 329.81 2020.55 0.470 330.44 2021.55 0.481 331.04 2022.55 0.492 331.61 2023.55 0.503 332.16 2024.55 0.513 332.69 2025.55 0.523 333.19 2026.55 0.534 333.68 2027.55 0.543 334.14 2028.55 0.553 334.60 2029.55 0.563 335.03 2030.55 0.572 335.45 2031.55 0.581 335.86 2032.55 0.590 336.26 2033.55 0.598 336.64 2034.55 0.607 337.01 2035.55 0.615 337.38 2036.55 0.623 337.73 2037.55 0.631 338.07 2038.55 0.639 338.41 2039.55 0.646 338.74 2040.55 0.654 339.06 2041.55 0.661 339.37 2042.55 0.668 339.68 2043.55 0.675 339.98 2044.55 0.681 340.28 2045.55 0.688 340.56 2046.55 0.694 340.85 2047.55 0.700 341.13 2048.55 0.706 341.40 2049.55 0.712 341.67 2050.55 0.718 341.93 2051.55 0.724 342.20 2052.55 0.729 342.45 2053.55 0.734 342.71 2054.55 0.739 342.96 2055.55 0.744 343.20 2056.55 0.749 343.44 2057.55 0.754 343.68 2058.55 0.758 343.92 2059.55 0.763 344.16 2060.55 0.767 344.39 2061.55 0.771 344.62 2062.55 0.775 344.84 2063.55 0.779 345.07 2064.55 0.782 345.29 2065.55 0.786 345.51 2066.55 0.789 345.73 2067.55 0.793 345.95 2068.55 0.796 346.16 2069.55 0.799 346.37 2070.55 0.801 346.59 2071.55 0.804 346.80 2072.55 0.807 347.01 2073.55 0.809 347.21 2074.55 0.812 347.42 2075.55 0.814 347.62 2076.55 0.816 347.83 2077.55 0.818 348.03 2078.55 0.820 348.23 2079.55 0.821 348.43 2080.55 0.823 348.64 2081.55 0.824 348.84 2082.55 0.826 349.03 2083.55 0.827 349.23 2084.55 0.828 349.43 2085.55 0.829 349.63 2086.55 0.829 349.83 2087.55 0.830 350.02 2088.55 0.831 350.22 2089.55 0.831 350.41 2090.55 0.831 350.61 2091.55 0.832 350.81 2092.55 0.832 351.00 2093.55 0.831 351.20 2094.55 0.831 351.39 2095.55 0.831 351.59 2096.55 0.830 351.79 2097.55 0.830 351.98 2098.55 0.829 352.18 2099.55 0.828 352.38 2100.55 0.827 352.58 2101.55 0.826 352.77 2102.55 0.825 352.97 2103.55 0.824 353.17 2104.55 0.822 353.37 2105.55 0.821 353.57 2106.55 0.819 353.77 2107.55 0.817 353.98 2108.55 0.815 354.18 2109.55 0.813 354.38 2110.55 0.811 354.59 2111.55 0.809 354.80 2112.55 0.806 355.00 2113.55 0.803 355.21 2114.55 0.801 355.42 2115.55 0.798 355.64 2116.55 0.795 355.85 2117.55 0.792 356.07 2118.55 0.788 356.28 2119.55 0.785 356.50 2120.55 0.782 356.72 2121.55 0.778 356.94 2122.55 0.774 357.17 2123.55 0.770 357.40 2124.55 0.766 357.63 2125.55 0.762 357.86 2126.55 0.758 358.09 2127.55 0.753 358.33 2128.55 0.749 358.57 2129.55 0.744 358.81 2130.55 0.739 359.06
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 18:18:29 |