| WDS: | A1591 | WDS ID/Discoverer |
| P: | 105.000 | Orbital period (years) |
| a: | 0.205 | Semi-major axis (arcseconds) |
| i: | 143.5 | Inclination (degrees) |
| Ω: | 52.5 | Longitude of ascending node (degrees) |
| T: | 1993.000 | Epoch of periastron passage (year) |
| e: | 0.45 | Eccentricity |
| ω: | 171.0 | Longitude of periastron (degrees) |
| Start-Year: | 1972.5 | Year |
| End-Year: | 2077.5 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for A1591 |
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| Position: | 110534.65+544828.7 | Epoch-2000 right ascension and declination |
| WDS-ID: | 11056+5448 | WDS designation |
| Discoverer Code: | A1591 | Discover designation and components |
| ADS number: | 8050 | Aitken Double Star catalog |
| HD number: | 96061 | HD catalog number |
| Hipparcos number: | 54216 | Hipparcos catalog number |
| V1: | 8.98 | Magnitude of the primary |
| V2: | 9.52 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 1974 | Date of last observation |
| Orbit grade: | 4 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | Flags | |
| Ephemerides: | Ephemerides | |
| Code: | Hei1976 | 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 0.249 85.20 -------------------------- 1972.50 0.192 9.66 1973.50 0.185 6.74 1974.50 0.178 3.60 1975.50 0.171 0.19 1976.50 0.164 356.50 1977.50 0.157 352.48 1978.50 0.150 348.09 1979.50 0.143 343.29 1980.50 0.137 338.02 1981.50 0.131 332.25 1982.50 0.125 325.94 1983.50 0.120 319.09 1984.50 0.116 311.70 1985.50 0.113 303.82 1986.50 0.111 295.54 1987.50 0.109 286.97 1988.50 0.109 278.24 1989.50 0.109 269.48 1990.50 0.110 260.80 1991.50 0.111 252.26 1992.50 0.112 243.88 1993.50 0.113 235.67 1994.50 0.114 227.61 1995.50 0.115 219.67 1996.50 0.115 211.84 1997.50 0.116 204.10 1998.50 0.117 196.47 1999.50 0.118 188.97 2000.50 0.120 181.65 2001.50 0.122 174.56 2002.50 0.124 167.73 2003.50 0.128 161.21 2004.50 0.131 155.04 2005.50 0.136 149.23 2006.50 0.140 143.78 2007.50 0.145 138.70 2008.50 0.150 133.96 2009.50 0.156 129.55 2010.50 0.162 125.45 2011.50 0.168 121.63 2012.50 0.174 118.08 2013.50 0.179 114.76 2014.50 0.185 111.65 2015.50 0.191 108.73 2016.50 0.197 105.99 2017.50 0.203 103.41 2018.50 0.209 100.97 2019.50 0.214 98.66 2020.50 0.220 96.47 2021.50 0.225 94.38 2022.50 0.230 92.39 2023.50 0.235 90.48 2024.50 0.240 88.65 2025.50 0.245 86.89 2026.50 0.249 85.20 2027.50 0.254 83.56 2028.50 0.258 81.98 2029.50 0.262 80.45 2030.50 0.265 78.96 2031.50 0.269 77.51 2032.50 0.272 76.10 2033.50 0.275 74.72 2034.50 0.278 73.37 2035.50 0.281 72.04 2036.50 0.283 70.74 2037.50 0.286 69.47 2038.50 0.288 68.21 2039.50 0.290 66.97 2040.50 0.291 65.74 2041.50 0.293 64.52 2042.50 0.294 63.32 2043.50 0.295 62.13 2044.50 0.295 60.94 2045.50 0.296 59.76 2046.50 0.296 58.58 2047.50 0.296 57.40 2048.50 0.296 56.22 2049.50 0.296 55.04 2050.50 0.295 53.86 2051.50 0.294 52.67 2052.50 0.293 51.47 2053.50 0.292 50.26 2054.50 0.291 49.04 2055.50 0.289 47.81 2056.50 0.287 46.56 2057.50 0.285 45.30 2058.50 0.282 44.01 2059.50 0.280 42.70 2060.50 0.277 41.36 2061.50 0.273 39.99 2062.50 0.270 38.59 2063.50 0.266 37.16 2064.50 0.263 35.68 2065.50 0.258 34.16 2066.50 0.254 32.58 2067.50 0.250 30.95 2068.50 0.245 29.26 2069.50 0.240 27.50 2070.50 0.234 25.65 2071.50 0.229 23.73 2072.50 0.223 21.70 2073.50 0.217 19.57 2074.50 0.211 17.32 2075.50 0.205 14.93 2076.50 0.198 12.38
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 16:33:28 |