| WDS: | HO87AB | WDS ID/Discoverer |
| P: | 119.390 | Orbital period (years) |
| a: | 0.299 | Semi-major axis (arcseconds) |
| i: | 19.6 | Inclination (degrees) |
| Ω: | 210.5 | Longitude of ascending node (degrees) |
| T: | 1972.370 | Epoch of periastron passage (year) |
| e: | 0.599 | Eccentricity |
| ω: | 78.8 | Longitude of periastron (degrees) |
| Start-Year: | 1965.305 | Year |
| End-Year: | 2084.695 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for HO87AB |
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| Position: | 183836.74+163227.7 | Epoch-2000 right ascension and declination |
| WDS-ID: | 18386+1632 | WDS designation |
| Discoverer Code: | HO87AB | Discover designation and components |
| ADS number: | 11530 | Aitken Double Star catalog |
| HD number: | 172246 | HD catalog number |
| Hipparcos number: | 91413 | Hipparcos catalog number |
| V1: | 8.34 | Magnitude of the primary |
| V2: | 8.98 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2019 | 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: | USN2019 | 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 0.450 103.07 -------------------------- 1965.31 0.175 208.85 1966.31 0.163 216.00 1967.31 0.152 224.23 1968.31 0.141 233.78 1969.31 0.131 244.86 1970.31 0.122 257.65 1971.31 0.116 272.05 1972.31 0.113 287.60 1973.31 0.114 303.40 1974.31 0.119 318.46 1975.31 0.126 332.04 1976.31 0.136 343.86 1977.31 0.147 353.99 1978.31 0.159 2.64 1979.31 0.172 10.07 1980.31 0.184 16.50 1981.31 0.196 22.13 1982.31 0.208 27.11 1983.31 0.220 31.55 1984.31 0.231 35.55 1985.31 0.242 39.19 1986.31 0.253 42.51 1987.31 0.263 45.58 1988.31 0.273 48.42 1989.31 0.282 51.06 1990.31 0.291 53.54 1991.31 0.300 55.87 1992.31 0.308 58.06 1993.31 0.317 60.15 1994.31 0.324 62.13 1995.31 0.332 64.02 1996.31 0.339 65.82 1997.31 0.346 67.56 1998.31 0.353 69.22 1999.31 0.359 70.83 2000.31 0.365 72.38 2001.31 0.371 73.88 2002.31 0.377 75.33 2003.31 0.382 76.74 2004.31 0.387 78.12 2005.31 0.392 79.45 2006.31 0.397 80.76 2007.31 0.402 82.03 2008.31 0.406 83.28 2009.31 0.410 84.50 2010.31 0.414 85.70 2011.31 0.417 86.88 2012.31 0.421 88.04 2013.31 0.424 89.18 2014.31 0.427 90.30 2015.31 0.430 91.40 2016.31 0.433 92.50 2017.31 0.435 93.57 2018.31 0.438 94.64 2019.31 0.440 95.70 2020.31 0.442 96.74 2021.31 0.443 97.78 2022.31 0.445 98.81 2023.31 0.447 99.84 2024.31 0.448 100.85 2025.31 0.449 101.87 2026.31 0.450 102.87 2027.31 0.450 103.88 2028.31 0.451 104.88 2029.31 0.451 105.88 2030.31 0.452 106.87 2031.31 0.452 107.87 2032.31 0.451 108.87 2033.31 0.451 109.87 2034.31 0.451 110.87 2035.31 0.450 111.87 2036.31 0.449 112.88 2037.31 0.448 113.89 2038.31 0.447 114.90 2039.31 0.446 115.92 2040.31 0.444 116.95 2041.31 0.443 117.98 2042.31 0.441 119.02 2043.31 0.439 120.08 2044.31 0.437 121.14 2045.31 0.434 122.21 2046.31 0.432 123.29 2047.31 0.429 124.39 2048.31 0.426 125.50 2049.31 0.423 126.63 2050.31 0.420 127.78 2051.31 0.416 128.94 2052.31 0.413 130.12 2053.31 0.409 131.32 2054.31 0.405 132.55 2055.31 0.401 133.80 2056.31 0.397 135.08 2057.31 0.392 136.39 2058.31 0.387 137.73 2059.31 0.382 139.10 2060.31 0.377 140.51 2061.31 0.372 141.96 2062.31 0.366 143.45 2063.31 0.360 144.99 2064.31 0.354 146.58 2065.31 0.348 148.23 2066.31 0.342 149.94 2067.31 0.335 151.72 2068.31 0.328 153.56 2069.31 0.321 155.50 2070.31 0.313 157.52 2071.31 0.306 159.64 2072.31 0.298 161.87 2073.31 0.289 164.23 2074.31 0.281 166.73 2075.31 0.272 169.39 2076.31 0.263 172.23 2077.31 0.254 175.28 2078.31 0.244 178.57 2079.31 0.234 182.14 2080.31 0.223 186.04 2081.31 0.213 190.32 2082.31 0.202 195.06 2083.31 0.190 200.35 2084.31 0.179 206.31
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 17:53:44 |