| WDS: | STF2055AB | WDS ID/Discoverer |
| P: | 129.003 | Orbital period (years) |
| a: | 0.89777 | Semi-major axis (arcseconds) |
| i: | 23.761 | Inclination (degrees) |
| Ω: | 61.239 | Longitude of ascending node (degrees) |
| T: | 1939.489 | Epoch of periastron passage (year) |
| e: | 0.61536 | Eccentricity |
| ω: | 148.772 | Longitude of periastron (degrees) |
| Start-Year: | 1960.4983 | Year |
| End-Year: | 2089.5017 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for STF2055AB |
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| Position: | 163054.84+015902.8 | Epoch-2000 right ascension and declination |
| WDS-ID: | 16309+0159 | WDS designation |
| Discoverer Code: | STF2055AB | Discover designation and components |
| ADS number: | 10087 | Aitken Double Star catalog |
| HD number: | 148857 | HD catalog number |
| Hipparcos number: | 80883 | Hipparcos catalog number |
| V1: | 4.15 | Magnitude of the primary |
| V2: | 5.15 | Magnitude of the secondary |
| Equinox: | Equinox | |
| Date: | 2015 | Date of last observation |
| Orbit grade: | 2 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | n | Flags |
| Ephemerides: | Ephemerides | |
| Code: | Izm2019 | 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 1.316 51.12 -------------------------- 1960.50 0.858 341.81 1961.50 0.882 343.95 1962.50 0.906 345.99 1963.50 0.929 347.91 1964.50 0.952 349.75 1965.50 0.974 351.50 1966.50 0.996 353.17 1967.50 1.017 354.77 1968.50 1.037 356.31 1969.50 1.057 357.79 1970.50 1.076 359.22 1971.50 1.095 0.60 1972.50 1.113 1.93 1973.50 1.131 3.21 1974.50 1.148 4.46 1975.50 1.165 5.68 1976.50 1.181 6.86 1977.50 1.197 8.00 1978.50 1.212 9.12 1979.50 1.226 10.21 1980.50 1.240 11.28 1981.50 1.253 12.33 1982.50 1.266 13.35 1983.50 1.279 14.35 1984.50 1.290 15.33 1985.50 1.302 16.30 1986.50 1.312 17.25 1987.50 1.323 18.18 1988.50 1.332 19.11 1989.50 1.342 20.01 1990.50 1.350 20.91 1991.50 1.359 21.79 1992.50 1.366 22.67 1993.50 1.374 23.53 1994.50 1.380 24.39 1995.50 1.386 25.24 1996.50 1.392 26.08 1997.50 1.397 26.91 1998.50 1.402 27.74 1999.50 1.406 28.56 2000.50 1.410 29.38 2001.50 1.413 30.20 2002.50 1.415 31.01 2003.50 1.417 31.82 2004.50 1.419 32.62 2005.50 1.420 33.43 2006.50 1.421 34.23 2007.50 1.421 35.04 2008.50 1.420 35.84 2009.50 1.419 36.65 2010.50 1.417 37.45 2011.50 1.415 38.26 2012.50 1.413 39.07 2013.50 1.409 39.89 2014.50 1.406 40.71 2015.50 1.401 41.53 2016.50 1.397 42.36 2017.50 1.391 43.19 2018.50 1.385 44.04 2019.50 1.379 44.89 2020.50 1.372 45.74 2021.50 1.364 46.61 2022.50 1.356 47.49 2023.50 1.347 48.38 2024.50 1.337 49.28 2025.50 1.327 50.19 2026.50 1.316 51.12 2027.50 1.305 52.07 2028.50 1.293 53.03 2029.50 1.280 54.01 2030.50 1.267 55.01 2031.50 1.253 56.03 2032.50 1.239 57.07 2033.50 1.223 58.15 2034.50 1.207 59.24 2035.50 1.190 60.37 2036.50 1.173 61.54 2037.50 1.155 62.73 2038.50 1.136 63.97 2039.50 1.116 65.25 2040.50 1.095 66.58 2041.50 1.074 67.96 2042.50 1.051 69.40 2043.50 1.028 70.90 2044.50 1.004 72.47 2045.50 0.979 74.12 2046.50 0.954 75.86 2047.50 0.927 77.69 2048.50 0.899 79.64 2049.50 0.871 81.71 2050.50 0.841 83.92 2051.50 0.810 86.31 2052.50 0.779 88.88 2053.50 0.746 91.67 2054.50 0.713 94.71 2055.50 0.679 98.07 2056.50 0.643 101.78 2057.50 0.608 105.93 2058.50 0.571 110.60 2059.50 0.535 115.91 2060.50 0.499 121.99 2061.50 0.463 129.02 2062.50 0.430 137.17 2063.50 0.399 146.63 2064.50 0.373 157.56 2065.50 0.353 169.94 2066.50 0.340 183.55 2067.50 0.335 197.89 2068.50 0.338 212.29 2069.50 0.347 226.16 2070.50 0.362 239.07 2071.50 0.381 250.84 2072.50 0.403 261.42 2073.50 0.426 270.88 2074.50 0.451 279.31 2075.50 0.478 286.83 2076.50 0.505 293.56 2077.50 0.533 299.60 2078.50 0.561 305.03 2079.50 0.589 309.94 2080.50 0.617 314.41 2081.50 0.645 318.48 2082.50 0.673 322.22 2083.50 0.701 325.66 2084.50 0.728 328.84 2085.50 0.755 331.79 2086.50 0.781 334.54 2087.50 0.807 337.12 2088.50 0.833 339.53 2089.50 0.858 341.80
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 17:28:43 |