| WDS: | HDS564 | WDS ID/Discoverer |
| P: | 111.750 | Orbital period (years) |
| a: | 0.731 | Semi-major axis (arcseconds) |
| i: | 116.1 | Inclination (degrees) |
| Ω: | 162.6 | Longitude of ascending node (degrees) |
| T: | 1995.330 | Epoch of periastron passage (year) |
| e: | 0.97 | Eccentricity |
| ω: | 108.1 | Longitude of periastron (degrees) |
| Start-Year: | 1969.125 | Year |
| End-Year: | 2080.875 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for HDS564 |
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| Position: | 042412.40+144529.8 | Epoch-2000 right ascension and declination |
| WDS-ID: | 04242+1445 | WDS designation |
| Discoverer Code: | HDS564 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 27836 | HD catalog number |
| Hipparcos number: | 20553 | Hipparcos catalog number |
| V1: | 7.78 | Magnitude of the primary |
| V2: | 10.80 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2004 | 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: | Zir2008 | 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 0.605 225.58 -------------------------- 1969.12 0.679 205.97 1970.12 0.670 205.57 1971.12 0.662 205.16 1972.12 0.652 204.73 1973.12 0.642 204.29 1974.12 0.632 203.84 1975.12 0.621 203.37 1976.12 0.609 202.88 1977.12 0.596 202.37 1978.12 0.583 201.84 1979.12 0.569 201.29 1980.12 0.555 200.71 1981.12 0.539 200.09 1982.12 0.522 199.44 1983.12 0.504 198.74 1984.12 0.485 197.98 1985.12 0.465 197.17 1986.12 0.443 196.28 1987.12 0.420 195.29 1988.12 0.394 194.18 1989.12 0.366 192.90 1990.12 0.336 191.41 1991.12 0.301 189.59 1992.12 0.261 187.26 1993.12 0.214 183.99 1994.12 0.153 178.48 1995.12 0.048 157.35 1996.12 0.080 303.44 1997.12 0.115 283.73 1998.12 0.145 272.76 1999.12 0.172 265.40 2000.12 0.198 260.01 2001.12 0.222 255.82 2002.12 0.245 252.44 2003.12 0.267 249.62 2004.12 0.288 247.22 2005.12 0.308 245.14 2006.12 0.327 243.31 2007.12 0.346 241.68 2008.12 0.363 240.22 2009.12 0.381 238.89 2010.12 0.397 237.67 2011.12 0.413 236.55 2012.12 0.429 235.51 2013.12 0.444 234.55 2014.12 0.459 233.64 2015.12 0.473 232.79 2016.12 0.487 231.99 2017.12 0.500 231.24 2018.12 0.513 230.52 2019.12 0.525 229.83 2020.12 0.537 229.18 2021.12 0.549 228.56 2022.12 0.560 227.96 2023.12 0.571 227.38 2024.12 0.581 226.83 2025.12 0.592 226.29 2026.12 0.602 225.77 2027.12 0.611 225.27 2028.12 0.620 224.79 2029.12 0.629 224.32 2030.12 0.638 223.86 2031.12 0.646 223.41 2032.12 0.654 222.97 2033.12 0.662 222.55 2034.12 0.669 222.13 2035.12 0.676 221.73 2036.12 0.683 221.33 2037.12 0.689 220.94 2038.12 0.696 220.55 2039.12 0.701 220.18 2040.12 0.707 219.80 2041.12 0.712 219.44 2042.12 0.717 219.08 2043.12 0.722 218.72 2044.12 0.727 218.37 2045.12 0.731 218.03 2046.12 0.735 217.68 2047.12 0.738 217.34 2048.12 0.742 217.01 2049.12 0.745 216.67 2050.12 0.748 216.34 2051.12 0.750 216.02 2052.12 0.752 215.69 2053.12 0.754 215.37 2054.12 0.756 215.04 2055.12 0.757 214.72 2056.12 0.758 214.40 2057.12 0.759 214.08 2058.12 0.759 213.76 2059.12 0.759 213.44 2060.12 0.759 213.12 2061.12 0.759 212.80 2062.12 0.758 212.48 2063.12 0.757 212.16 2064.12 0.756 211.84 2065.12 0.754 211.52 2066.12 0.752 211.19 2067.12 0.749 210.86 2068.12 0.747 210.54 2069.12 0.744 210.20 2070.12 0.740 209.87 2071.12 0.736 209.53 2072.12 0.732 209.19 2073.12 0.728 208.85 2074.12 0.723 208.50 2075.12 0.718 208.14 2076.12 0.712 207.78 2077.12 0.706 207.41 2078.12 0.699 207.04 2079.12 0.692 206.66 2080.12 0.685 206.27
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 15:22:58 |