| WDS: | HDO181 | WDS ID/Discoverer |
| P: | 201.900 | Orbital period (years) |
| a: | 0.4 | Semi-major axis (arcseconds) |
| i: | 158.6 | Inclination (degrees) |
| Ω: | 141.5 | Longitude of ascending node (degrees) |
| T: | 1981.290 | Epoch of periastron passage (year) |
| e: | 0.38 | Eccentricity |
| ω: | 13.2 | Longitude of periastron (degrees) |
| Start-Year: | 1924.05 | Year |
| End-Year: | 2125.95 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for HDO181 |
||
| Position: | 000902.35-540007.1 | Epoch-2000 right ascension and declination |
| WDS-ID: | 00090-5400 | WDS designation |
| Discoverer Code: | HDO181 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 469 | HD catalog number |
| Hipparcos number: | 730 | Hipparcos catalog number |
| V1: | 6.74 | Magnitude of the primary |
| V2: | 8.07 | 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: | n | Flags |
| Ephemerides: | Ephemerides | |
| Code: | Alz2020b | 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 0.417 3.32 -------------------------- 1924.05 0.456 268.53 1925.05 0.452 267.34 1926.05 0.448 266.13 1927.05 0.444 264.89 1928.05 0.440 263.64 1929.05 0.436 262.35 1930.05 0.432 261.05 1931.05 0.427 259.72 1932.05 0.423 258.36 1933.05 0.419 256.97 1934.05 0.414 255.55 1935.05 0.410 254.10 1936.05 0.405 252.63 1937.05 0.401 251.11 1938.05 0.396 249.57 1939.05 0.392 247.98 1940.05 0.387 246.36 1941.05 0.382 244.70 1942.05 0.378 243.00 1943.05 0.373 241.25 1944.05 0.368 239.47 1945.05 0.364 237.63 1946.05 0.359 235.75 1947.05 0.354 233.82 1948.05 0.350 231.84 1949.05 0.345 229.80 1950.05 0.340 227.71 1951.05 0.336 225.56 1952.05 0.331 223.35 1953.05 0.327 221.08 1954.05 0.322 218.75 1955.05 0.318 216.36 1956.05 0.314 213.90 1957.05 0.310 211.37 1958.05 0.305 208.77 1959.05 0.301 206.10 1960.05 0.298 203.36 1961.05 0.294 200.55 1962.05 0.290 197.67 1963.05 0.286 194.71 1964.05 0.283 191.68 1965.05 0.280 188.57 1966.05 0.276 185.39 1967.05 0.273 182.14 1968.05 0.270 178.81 1969.05 0.268 175.42 1970.05 0.265 171.95 1971.05 0.263 168.42 1972.05 0.260 164.83 1973.05 0.258 161.17 1974.05 0.256 157.46 1975.05 0.254 153.69 1976.05 0.253 149.86 1977.05 0.251 146.00 1978.05 0.250 142.08 1979.05 0.249 138.13 1980.05 0.248 134.15 1981.05 0.247 130.15 1982.05 0.247 126.12 1983.05 0.247 122.08 1984.05 0.246 118.04 1985.05 0.247 113.99 1986.05 0.247 109.96 1987.05 0.248 105.95 1988.05 0.249 101.97 1989.05 0.250 98.02 1990.05 0.252 94.11 1991.05 0.254 90.26 1992.05 0.256 86.47 1993.05 0.258 82.75 1994.05 0.261 79.09 1995.05 0.264 75.52 1996.05 0.267 72.03 1997.05 0.270 68.62 1998.05 0.274 65.31 1999.05 0.278 62.08 2000.05 0.282 58.95 2001.05 0.286 55.91 2002.05 0.291 52.96 2003.05 0.296 50.10 2004.05 0.300 47.33 2005.05 0.305 44.65 2006.05 0.310 42.05 2007.05 0.315 39.54 2008.05 0.320 37.11 2009.05 0.326 34.75 2010.05 0.331 32.48 2011.05 0.336 30.27 2012.05 0.342 28.13 2013.05 0.347 26.06 2014.05 0.352 24.05 2015.05 0.358 22.10 2016.05 0.363 20.21 2017.05 0.369 18.38 2018.05 0.374 16.60 2019.05 0.379 14.86 2020.05 0.385 13.18 2021.05 0.390 11.54 2022.05 0.395 9.95 2023.05 0.400 8.39 2024.05 0.405 6.88 2025.05 0.410 5.40 2026.05 0.415 3.95 2027.05 0.420 2.55 2028.05 0.425 1.17 2029.05 0.430 359.82 2030.05 0.434 358.51 2031.05 0.439 357.22 2032.05 0.443 355.95 2033.05 0.448 354.72 2034.05 0.452 353.50 2035.05 0.456 352.31 2036.05 0.461 351.14 2037.05 0.465 349.99 2038.05 0.469 348.87 2039.05 0.472 347.76 2040.05 0.476 346.66 2041.05 0.480 345.59 2042.05 0.484 344.53 2043.05 0.487 343.49 2044.05 0.491 342.46 2045.05 0.494 341.45 2046.05 0.497 340.45 2047.05 0.500 339.46 2048.05 0.503 338.48 2049.05 0.506 337.52 2050.05 0.509 336.57 2051.05 0.512 335.62 2052.05 0.515 334.69 2053.05 0.517 333.77 2054.05 0.520 332.85 2055.05 0.522 331.95 2056.05 0.524 331.05 2057.05 0.526 330.16 2058.05 0.529 329.28 2059.05 0.531 328.40 2060.05 0.532 327.53 2061.05 0.534 326.67 2062.05 0.536 325.81 2063.05 0.538 324.96 2064.05 0.539 324.11 2065.05 0.541 323.27 2066.05 0.542 322.43 2067.05 0.543 321.59 2068.05 0.544 320.76 2069.05 0.545 319.93 2070.05 0.546 319.11 2071.05 0.547 318.29 2072.05 0.548 317.47 2073.05 0.548 316.65 2074.05 0.549 315.83 2075.05 0.549 315.02 2076.05 0.550 314.20 2077.05 0.550 313.39 2078.05 0.550 312.58 2079.05 0.550 311.77 2080.05 0.550 310.96 2081.05 0.550 310.15 2082.05 0.550 309.34 2083.05 0.550 308.52 2084.05 0.549 307.71 2085.05 0.549 306.90 2086.05 0.548 306.08 2087.05 0.548 305.26 2088.05 0.547 304.44 2089.05 0.546 303.62 2090.05 0.545 302.80 2091.05 0.544 301.97 2092.05 0.543 301.14 2093.05 0.542 300.30 2094.05 0.541 299.46 2095.05 0.539 298.62 2096.05 0.538 297.78 2097.05 0.536 296.92 2098.05 0.535 296.07 2099.05 0.533 295.21 2100.05 0.531 294.34 2101.05 0.529 293.47 2102.05 0.527 292.59 2103.05 0.525 291.70 2104.05 0.523 290.80 2105.05 0.521 289.90 2106.05 0.519 288.99 2107.05 0.516 288.08 2108.05 0.514 287.15 2109.05 0.511 286.22 2110.05 0.509 285.27 2111.05 0.506 284.32 2112.05 0.503 283.35 2113.05 0.500 282.37 2114.05 0.497 281.38 2115.05 0.494 280.38 2116.05 0.491 279.37 2117.05 0.488 278.35 2118.05 0.484 277.31 2119.05 0.481 276.25 2120.05 0.478 275.18 2121.05 0.474 274.10 2122.05 0.471 273.00 2123.05 0.467 271.88 2124.05 0.463 270.74 2125.05 0.459 269.59
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 14:35:39 |