| WDS: | B1554 | WDS ID/Discoverer |
| P: | 113.800 | Orbital period (years) |
| a: | 0.228 | Semi-major axis (arcseconds) |
| i: | 68.7 | Inclination (degrees) |
| Ω: | 150.3 | Longitude of ascending node (degrees) |
| T: | 1984.200 | Epoch of periastron passage (year) |
| e: | 0.254 | Eccentricity |
| ω: | 356.7 | Longitude of periastron (degrees) |
| Start-Year: | 1968.1 | Year |
| End-Year: | 2081.9 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for B1554 |
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| Position: | 073757.57-320752.2 | Epoch-2000 right ascension and declination |
| WDS-ID: | 07380-3208 | WDS designation |
| Discoverer Code: | B1554 | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 61431 | HD catalog number |
| Hipparcos number: | 37145 | Hipparcos catalog number |
| V1: | 6.99 | Magnitude of the primary |
| V2: | 8.72 | Magnitude of the secondary |
| Equinox: | Equinox | |
| Date: | 2018 | 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: | USN2021b | 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 0.237 317.26 -------------------------- 1968.10 0.079 83.05 1969.10 0.083 91.90 1970.10 0.088 99.78 1971.10 0.095 106.66 1972.10 0.102 112.61 1973.10 0.110 117.75 1974.10 0.118 122.21 1975.10 0.126 126.12 1976.10 0.133 129.57 1977.10 0.140 132.66 1978.10 0.147 135.46 1979.10 0.153 138.03 1980.10 0.158 140.42 1981.10 0.162 142.67 1982.10 0.166 144.81 1983.10 0.168 146.88 1984.10 0.170 148.90 1985.10 0.170 150.90 1986.10 0.170 152.90 1987.10 0.168 154.93 1988.10 0.165 157.01 1989.10 0.162 159.17 1990.10 0.157 161.44 1991.10 0.152 163.86 1992.10 0.146 166.47 1993.10 0.139 169.30 1994.10 0.132 172.43 1995.10 0.125 175.91 1996.10 0.118 179.84 1997.10 0.110 184.29 1998.10 0.103 189.39 1999.10 0.096 195.25 2000.10 0.090 201.94 2001.10 0.085 209.54 2002.10 0.081 217.98 2003.10 0.079 227.07 2004.10 0.078 236.48 2005.10 0.080 245.78 2006.10 0.083 254.57 2007.10 0.087 262.59 2008.10 0.093 269.70 2009.10 0.100 275.91 2010.10 0.108 281.28 2011.10 0.116 285.93 2012.10 0.124 289.96 2013.10 0.133 293.47 2014.10 0.141 296.54 2015.10 0.150 299.26 2016.10 0.159 301.68 2017.10 0.168 303.85 2018.10 0.176 305.81 2019.10 0.184 307.59 2020.10 0.192 309.22 2021.10 0.200 310.73 2022.10 0.208 312.12 2023.10 0.215 313.41 2024.10 0.222 314.62 2025.10 0.228 315.76 2026.10 0.235 316.84 2027.10 0.241 317.86 2028.10 0.246 318.84 2029.10 0.252 319.77 2030.10 0.257 320.67 2031.10 0.261 321.53 2032.10 0.265 322.36 2033.10 0.269 323.17 2034.10 0.272 323.96 2035.10 0.275 324.73 2036.10 0.278 325.48 2037.10 0.280 326.22 2038.10 0.282 326.95 2039.10 0.284 327.67 2040.10 0.285 328.39 2041.10 0.286 329.10 2042.10 0.286 329.81 2043.10 0.286 330.52 2044.10 0.285 331.22 2045.10 0.284 331.94 2046.10 0.283 332.66 2047.10 0.281 333.38 2048.10 0.279 334.12 2049.10 0.277 334.87 2050.10 0.274 335.63 2051.10 0.270 336.41 2052.10 0.267 337.21 2053.10 0.263 338.03 2054.10 0.258 338.89 2055.10 0.253 339.77 2056.10 0.248 340.69 2057.10 0.243 341.65 2058.10 0.237 342.65 2059.10 0.230 343.71 2060.10 0.224 344.84 2061.10 0.217 346.03 2062.10 0.209 347.30 2063.10 0.202 348.67 2064.10 0.194 350.15 2065.10 0.185 351.76 2066.10 0.177 353.52 2067.10 0.168 355.46 2068.10 0.159 357.61 2069.10 0.150 0.02 2070.10 0.141 2.73 2071.10 0.132 5.82 2072.10 0.123 9.36 2073.10 0.115 13.45 2074.10 0.106 18.20 2075.10 0.098 23.75 2076.10 0.091 30.22 2077.10 0.085 37.71 2078.10 0.080 46.21 2079.10 0.077 55.58 2080.10 0.076 65.47 2081.10 0.077 75.41
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 15:59:39 |