| WDS: | A1642 | WDS ID/Discoverer |
| P: | 188.610 | Orbital period (years) |
| a: | 0.719 | Semi-major axis (arcseconds) |
| i: | 99.3 | Inclination (degrees) |
| Ω: | 176.1 | Longitude of ascending node (degrees) |
| T: | 1892.300 | Epoch of periastron passage (year) |
| e: | 0.271 | Eccentricity |
| ω: | 120.4 | Longitude of periastron (degrees) |
| Start-Year: | 1930.695 | Year |
| End-Year: | 2119.305 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for A1642 |
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| Position: | 161343.62+463823.1 | Epoch-2000 right ascension and declination |
| WDS-ID: | 16137+4638 | WDS designation |
| Discoverer Code: | A1642 | Discover designation and components |
| ADS number: | 9975 | Aitken Double Star catalog |
| HD number: | 146327 | HD catalog number |
| Hipparcos number: | 79526 | Hipparcos catalog number |
| V1: | 8.87 | Magnitude of the primary |
| V2: | 9.39 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 1997 | 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: | Hrt2001b | 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 0.797 177.79 -------------------------- 1930.69 0.512 346.93 1931.69 0.501 346.33 1932.69 0.489 345.70 1933.69 0.477 345.05 1934.69 0.464 344.35 1935.69 0.451 343.62 1936.69 0.438 342.84 1937.69 0.424 342.01 1938.69 0.410 341.13 1939.69 0.395 340.18 1940.69 0.381 339.16 1941.69 0.366 338.06 1942.69 0.351 336.86 1943.69 0.336 335.56 1944.69 0.320 334.13 1945.69 0.305 332.56 1946.69 0.290 330.82 1947.69 0.275 328.89 1948.69 0.259 326.74 1949.69 0.245 324.32 1950.69 0.230 321.59 1951.69 0.216 318.50 1952.69 0.202 314.99 1953.69 0.190 310.99 1954.69 0.178 306.44 1955.69 0.167 301.26 1956.69 0.158 295.43 1957.69 0.150 288.93 1958.69 0.145 281.85 1959.69 0.141 274.32 1960.69 0.140 266.56 1961.69 0.142 258.85 1962.69 0.146 251.44 1963.69 0.152 244.54 1964.69 0.161 238.25 1965.69 0.170 232.64 1966.69 0.182 227.67 1967.69 0.194 223.31 1968.69 0.207 219.48 1969.69 0.221 216.12 1970.69 0.235 213.16 1971.69 0.250 210.55 1972.69 0.265 208.23 1973.69 0.280 206.17 1974.69 0.296 204.32 1975.69 0.312 202.65 1976.69 0.327 201.15 1977.69 0.343 199.78 1978.69 0.359 198.53 1979.69 0.374 197.39 1980.69 0.390 196.34 1981.69 0.405 195.37 1982.69 0.421 194.47 1983.69 0.436 193.63 1984.69 0.451 192.85 1985.69 0.466 192.12 1986.69 0.481 191.44 1987.69 0.496 190.80 1988.69 0.510 190.19 1989.69 0.524 189.61 1990.69 0.538 189.07 1991.69 0.552 188.55 1992.69 0.565 188.06 1993.69 0.578 187.59 1994.69 0.591 187.14 1995.69 0.604 186.71 1996.69 0.616 186.30 1997.69 0.628 185.90 1998.69 0.639 185.52 1999.69 0.651 185.15 2000.69 0.662 184.79 2001.69 0.672 184.45 2002.69 0.683 184.11 2003.69 0.693 183.79 2004.69 0.702 183.47 2005.69 0.711 183.17 2006.69 0.720 182.87 2007.69 0.728 182.57 2008.69 0.736 182.29 2009.69 0.744 182.01 2010.69 0.751 181.73 2011.69 0.757 181.46 2012.69 0.763 181.20 2013.69 0.769 180.94 2014.69 0.774 180.68 2015.69 0.779 180.42 2016.69 0.783 180.17 2017.69 0.787 179.92 2018.69 0.790 179.68 2019.69 0.793 179.43 2020.69 0.795 179.19 2021.69 0.797 178.95 2022.69 0.798 178.70 2023.69 0.798 178.46 2024.69 0.798 178.22 2025.69 0.798 177.98 2026.69 0.796 177.74 2027.69 0.794 177.50 2028.69 0.792 177.25 2029.69 0.789 177.01 2030.69 0.785 176.76 2031.69 0.781 176.51 2032.69 0.775 176.26 2033.69 0.770 176.00 2034.69 0.763 175.74 2035.69 0.756 175.47 2036.69 0.748 175.20 2037.69 0.740 174.92 2038.69 0.731 174.64 2039.69 0.721 174.35 2040.69 0.710 174.05 2041.69 0.699 173.74 2042.69 0.686 173.42 2043.69 0.673 173.09 2044.69 0.660 172.74 2045.69 0.645 172.38 2046.69 0.630 172.00 2047.69 0.614 171.61 2048.69 0.597 171.19 2049.69 0.580 170.74 2050.69 0.561 170.27 2051.69 0.542 169.77 2052.69 0.522 169.23 2053.69 0.502 168.64 2054.69 0.480 168.00 2055.69 0.458 167.31 2056.69 0.436 166.54 2057.69 0.412 165.68 2058.69 0.388 164.72 2059.69 0.364 163.64 2060.69 0.338 162.39 2061.69 0.313 160.94 2062.69 0.287 159.23 2063.69 0.260 157.17 2064.69 0.234 154.65 2065.69 0.207 151.49 2066.69 0.181 147.41 2067.69 0.156 141.98 2068.69 0.132 134.55 2069.69 0.112 124.11 2070.69 0.096 109.59 2071.69 0.088 90.99 2072.69 0.090 71.12 2073.69 0.101 54.03 2074.69 0.120 41.28 2075.69 0.142 32.20 2076.69 0.166 25.68 2077.69 0.192 20.85 2078.69 0.218 17.17 2079.69 0.244 14.28 2080.69 0.270 11.94 2081.69 0.295 10.02 2082.69 0.320 8.39 2083.69 0.344 7.00 2084.69 0.368 5.79 2085.69 0.390 4.72 2086.69 0.412 3.76 2087.69 0.432 2.90 2088.69 0.452 2.11 2089.69 0.470 1.39 2090.69 0.487 0.72 2091.69 0.503 0.09 2092.69 0.518 359.50 2093.69 0.531 358.95 2094.69 0.544 358.42 2095.69 0.555 357.91 2096.69 0.565 357.42 2097.69 0.573 356.94 2098.69 0.581 356.48 2099.69 0.587 356.03 2100.69 0.592 355.59 2101.69 0.596 355.15 2102.69 0.599 354.72 2103.69 0.600 354.30 2104.69 0.601 353.87 2105.69 0.601 353.45 2106.69 0.599 353.02 2107.69 0.597 352.59 2108.69 0.594 352.16 2109.69 0.590 351.72 2110.69 0.585 351.27 2111.69 0.579 350.82 2112.69 0.573 350.36 2113.69 0.565 349.88 2114.69 0.557 349.40 2115.69 0.549 348.90 2116.69 0.539 348.38 2117.69 0.529 347.84 2118.69 0.519 347.28
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| Report created: |
2026-06-25 17:24:04 |