| WDS: | HU687 | WDS ID/Discoverer |
| P: | 154.600 | Orbital period (years) |
| a: | 0.159 | Semi-major axis (arcseconds) |
| i: | 36.2 | Inclination (degrees) |
| Ω: | 28.9 | Longitude of ascending node (degrees) |
| T: | 1960.630 | Epoch of periastron passage (year) |
| e: | 0.321 | Eccentricity |
| ω: | 218.9 | Longitude of periastron (degrees) |
| Start-Year: | 1947.7 | Year |
| End-Year: | 2102.3 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for HU687 |
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| Position: | 195456.19+504911.9 | Epoch-2000 right ascension and declination |
| WDS-ID: | 19549+5049 | WDS designation |
| Discoverer Code: | HU687 | Discover designation and components |
| ADS number: | 13135 | Aitken Double Star catalog |
| HD number: | 188871 | HD catalog number |
| Hipparcos number: | 97997 | Hipparcos catalog number |
| V1: | 8.54 | Magnitude of the primary |
| V2: | 8.63 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2008 | 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: | Doc2017f | 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 0.201 48.93 -------------------------- 1947.70 0.119 194.12 1948.70 0.118 197.30 1949.70 0.117 200.55 1950.70 0.116 203.85 1951.70 0.115 207.23 1952.70 0.113 210.69 1953.70 0.112 214.23 1954.70 0.110 217.87 1955.70 0.109 221.62 1956.70 0.107 225.49 1957.70 0.105 229.48 1958.70 0.104 233.60 1959.70 0.102 237.87 1960.70 0.100 242.28 1961.70 0.099 246.84 1962.70 0.097 251.55 1963.70 0.096 256.39 1964.70 0.095 261.35 1965.70 0.094 266.42 1966.70 0.093 271.57 1967.70 0.093 276.76 1968.70 0.093 281.96 1969.70 0.093 287.13 1970.70 0.094 292.24 1971.70 0.095 297.26 1972.70 0.097 302.14 1973.70 0.099 306.86 1974.70 0.101 311.40 1975.70 0.103 315.76 1976.70 0.105 319.92 1977.70 0.108 323.88 1978.70 0.111 327.64 1979.70 0.114 331.21 1980.70 0.117 334.59 1981.70 0.120 337.80 1982.70 0.123 340.84 1983.70 0.126 343.73 1984.70 0.130 346.47 1985.70 0.133 349.08 1986.70 0.136 351.57 1987.70 0.139 353.93 1988.70 0.143 356.20 1989.70 0.146 358.36 1990.70 0.149 0.44 1991.70 0.152 2.43 1992.70 0.155 4.34 1993.70 0.158 6.19 1994.70 0.160 7.97 1995.70 0.163 9.69 1996.70 0.166 11.36 1997.70 0.168 12.97 1998.70 0.171 14.54 1999.70 0.173 16.07 2000.70 0.175 17.56 2001.70 0.177 19.01 2002.70 0.179 20.42 2003.70 0.181 21.81 2004.70 0.183 23.16 2005.70 0.185 24.49 2006.70 0.186 25.80 2007.70 0.188 27.08 2008.70 0.189 28.34 2009.70 0.191 29.59 2010.70 0.192 30.81 2011.70 0.193 32.03 2012.70 0.194 33.22 2013.70 0.195 34.41 2014.70 0.196 35.58 2015.70 0.197 36.74 2016.70 0.198 37.89 2017.70 0.199 39.04 2018.70 0.199 40.18 2019.70 0.200 41.31 2020.70 0.200 42.44 2021.70 0.200 43.56 2022.70 0.201 44.68 2023.70 0.201 45.80 2024.70 0.201 46.92 2025.70 0.201 48.03 2026.70 0.201 49.15 2027.70 0.201 50.27 2028.70 0.200 51.39 2029.70 0.200 52.51 2030.70 0.200 53.64 2031.70 0.199 54.77 2032.70 0.199 55.91 2033.70 0.198 57.05 2034.70 0.198 58.20 2035.70 0.197 59.36 2036.70 0.196 60.52 2037.70 0.195 61.70 2038.70 0.194 62.88 2039.70 0.193 64.08 2040.70 0.192 65.29 2041.70 0.191 66.51 2042.70 0.190 67.74 2043.70 0.189 68.99 2044.70 0.188 70.25 2045.70 0.187 71.53 2046.70 0.186 72.83 2047.70 0.184 74.15 2048.70 0.183 75.48 2049.70 0.182 76.83 2050.70 0.180 78.21 2051.70 0.179 79.60 2052.70 0.177 81.02 2053.70 0.176 82.47 2054.70 0.174 83.94 2055.70 0.173 85.43 2056.70 0.171 86.95 2057.70 0.170 88.50 2058.70 0.168 90.08 2059.70 0.166 91.69 2060.70 0.165 93.33 2061.70 0.163 95.00 2062.70 0.162 96.70 2063.70 0.160 98.44 2064.70 0.158 100.22 2065.70 0.157 102.03 2066.70 0.155 103.87 2067.70 0.154 105.76 2068.70 0.152 107.68 2069.70 0.151 109.65 2070.70 0.149 111.65 2071.70 0.148 113.69 2072.70 0.146 115.78 2073.70 0.145 117.91 2074.70 0.143 120.07 2075.70 0.142 122.28 2076.70 0.141 124.53 2077.70 0.140 126.82 2078.70 0.138 129.15 2079.70 0.137 131.52 2080.70 0.136 133.93 2081.70 0.135 136.38 2082.70 0.134 138.87 2083.70 0.133 141.39 2084.70 0.132 143.95 2085.70 0.131 146.55 2086.70 0.130 149.17 2087.70 0.130 151.83 2088.70 0.129 154.53 2089.70 0.128 157.25 2090.70 0.128 160.00 2091.70 0.127 162.78 2092.70 0.126 165.58 2093.70 0.126 168.42 2094.70 0.125 171.28 2095.70 0.124 174.17 2096.70 0.124 177.10 2097.70 0.123 180.05 2098.70 0.122 183.04 2099.70 0.122 186.06 2100.70 0.121 189.13 2101.70 0.120 192.23
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 18:10:00 |