Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:17:47

Orbital Elements for BU255
WDS: BU255 WDS ID/Discoverer
P: 245.000 Orbital period (years)
a: 0.661 Semi-major axis (arcseconds)
i: 116.0 Inclination (degrees)
Ω: 166.1 Longitude of ascending node (degrees)
T: 2067.200 Epoch of periastron passage (year)
e: 0.96 Eccentricity
ω: 265.4 Longitude of periastron (degrees)
Start-Year: 1903.0 Year
End-Year: 2147.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU255
Position: 001150.13+282524.0 Epoch-2000 right ascension and declination
WDS-ID: 00118+2825 WDS designation
Discoverer Code: BU255 Discover designation and components
ADS number: 147 Aitken Double Star catalog
HD number: 744 HD catalog number
Hipparcos number: 956 Hipparcos catalog number
V1: 7.88 Magnitude of the primary
V2: 8.97 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for BU255



WDS 6th Orbit including measures of BU255

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of BU255
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.407     62.1
-------------------------
1903.0     0.554     96.6
1904.0     0.555     96.3
1905.0     0.556     96.1
1906.0     0.558     95.8
1907.0     0.559     95.6
1908.0     0.560     95.3
1909.0     0.562     95.1
1910.0     0.563     94.8
1911.0     0.564     94.6
1912.0     0.565     94.3
1913.0     0.566     94.1
1914.0     0.567     93.8
1915.0     0.568     93.6
1916.0     0.569     93.3
1917.0     0.569     93.1
1918.0     0.570     92.9
1919.0     0.571     92.6
1920.0     0.572     92.4
1921.0     0.572     92.1
1922.0     0.573     91.9
1923.0     0.574     91.7
1924.0     0.574     91.4
1925.0     0.575     91.2
1926.0     0.575     90.9
1927.0     0.575     90.7
1928.0     0.576     90.5
1929.0     0.576     90.2
1930.0     0.576     90.0
1931.0     0.577     89.7
1932.0     0.577     89.5
1933.0     0.577     89.3
1934.0     0.577     89.0
1935.0     0.577     88.8
1936.0     0.577     88.6
1937.0     0.577     88.3
1938.0     0.577     88.1
1939.0     0.577     87.9
1940.0     0.577     87.6
1941.0     0.577     87.4
1942.0     0.576     87.1
1943.0     0.576     86.9
1944.0     0.576     86.7
1945.0     0.575     86.4
1946.0     0.575     86.2
1947.0     0.575     86.0
1948.0     0.574     85.7
1949.0     0.574     85.5
1950.0     0.573     85.2
1951.0     0.573     85.0
1952.0     0.572     84.8
1953.0     0.571     84.5
1954.0     0.571     84.3
1955.0     0.570     84.0
1956.0     0.569     83.8
1957.0     0.568     83.5
1958.0     0.567     83.3
1959.0     0.566     83.1
1960.0     0.565     82.8
1961.0     0.564     82.6
1962.0     0.563     82.3
1963.0     0.562     82.1
1964.0     0.561     81.8
1965.0     0.560     81.6
1966.0     0.559     81.3
1967.0     0.558     81.1
1968.0     0.556     80.8
1969.0     0.555     80.5
1970.0     0.554     80.3
1971.0     0.552     80.0
1972.0     0.551     79.8
1973.0     0.549     79.5
1974.0     0.548     79.3
1975.0     0.546     79.0
1976.0     0.545     78.7
1977.0     0.543     78.5
1978.0     0.541     78.2
1979.0     0.540     77.9
1980.0     0.538     77.7
1981.0     0.536     77.4
1982.0     0.534     77.1
1983.0     0.532     76.8
1984.0     0.530     76.5
1985.0     0.528     76.3
1986.0     0.526     76.0
1987.0     0.524     75.7
1988.0     0.522     75.4
1989.0     0.520     75.1
1990.0     0.518     74.8
1991.0     0.515     74.5
1992.0     0.513     74.2
1993.0     0.511     73.9
1994.0     0.508     73.6
1995.0     0.506     73.3
1996.0     0.503     73.0
1997.0     0.501     72.7
1998.0     0.498     72.4
1999.0     0.496     72.1
2000.0     0.493     71.7
2001.0     0.490     71.4
2002.0     0.487     71.1
2003.0     0.484     70.8
2004.0     0.482     70.4
2005.0     0.479     70.1
2006.0     0.476     69.7
2007.0     0.473     69.4
2008.0     0.469     69.0
2009.0     0.466     68.7
2010.0     0.463     68.3
2011.0     0.460     67.9
2012.0     0.456     67.5
2013.0     0.453     67.2
2014.0     0.450     66.8
2015.0     0.446     66.4
2016.0     0.442     66.0
2017.0     0.439     65.6
2018.0     0.435     65.2
2019.0     0.431     64.7
2020.0     0.427     64.3
2021.0     0.423     63.9
2022.0     0.419     63.4
2023.0     0.415     63.0
2024.0     0.411     62.5
2025.0     0.407     62.1
2026.0     0.403     61.6
2027.0     0.398     61.1
2028.0     0.394     60.6
2029.0     0.389     60.1
2030.0     0.385     59.5
2031.0     0.380     59.0
2032.0     0.375     58.5
2033.0     0.371     57.9
2034.0     0.366     57.3
2035.0     0.361     56.7
2036.0     0.355     56.1
2037.0     0.350     55.5
2038.0     0.345     54.8
2039.0     0.339     54.1
2040.0     0.334     53.4
2041.0     0.328     52.7
2042.0     0.322     52.0
2043.0     0.316     51.2
2044.0     0.310     50.4
2045.0     0.304     49.6
2046.0     0.297     48.7
2047.0     0.290     47.8
2048.0     0.284     46.8
2049.0     0.277     45.8
2050.0     0.270     44.8
2051.0     0.262     43.6
2052.0     0.254     42.5
2053.0     0.247     41.2
2054.0     0.238     39.9
2055.0     0.230     38.4
2056.0     0.221     36.9
2057.0     0.212     35.2
2058.0     0.202     33.3
2059.0     0.191     31.3
2060.0     0.180     29.0
2061.0     0.168     26.4
2062.0     0.156     23.4
2063.0     0.141     19.8
2064.0     0.125     15.4
2065.0     0.105      9.4
2066.0     0.078    359.8
2067.0     0.026    326.3
2068.0     0.064    163.0
2069.0     0.103    151.5
2070.0     0.131    145.8
2071.0     0.152    141.8
2072.0     0.171    138.8
2073.0     0.187    136.3
2074.0     0.202    134.3
2075.0     0.216    132.5
2076.0     0.229    130.9
2077.0     0.240    129.4
2078.0     0.252    128.1
2079.0     0.262    126.9
2080.0     0.272    125.8
2081.0     0.282    124.8
2082.0     0.291    123.8
2083.0     0.299    122.9
2084.0     0.308    122.1
2085.0     0.316    121.3
2086.0     0.324    120.5
2087.0     0.331    119.8
2088.0     0.338    119.1
2089.0     0.345    118.4
2090.0     0.352    117.7
2091.0     0.359    117.1
2092.0     0.365    116.5
2093.0     0.371    115.9
2094.0     0.377    115.4
2095.0     0.383    114.8
2096.0     0.389    114.3
2097.0     0.394    113.8
2098.0     0.400    113.3
2099.0     0.405    112.8
2100.0     0.410    112.3
2101.0     0.415    111.9
2102.0     0.420    111.4
2103.0     0.425    111.0
2104.0     0.429    110.5
2105.0     0.434    110.1
2106.0     0.438    109.7
2107.0     0.443    109.3
2108.0     0.447    108.9
2109.0     0.451    108.5
2110.0     0.455    108.1
2111.0     0.459    107.7
2112.0     0.463    107.4
2113.0     0.467    107.0
2114.0     0.470    106.6
2115.0     0.474    106.3
2116.0     0.477    105.9
2117.0     0.481    105.6
2118.0     0.484    105.3
2119.0     0.487    104.9
2120.0     0.491    104.6
2121.0     0.494    104.3
2122.0     0.497    103.9
2123.0     0.500    103.6
2124.0     0.503    103.3
2125.0     0.505    103.0
2126.0     0.508    102.7
2127.0     0.511    102.4
2128.0     0.513    102.1
2129.0     0.516    101.8
2130.0     0.518    101.5
2131.0     0.521    101.2
2132.0     0.523    100.9
2133.0     0.526    100.6
2134.0     0.528    100.4
2135.0     0.530    100.1
2136.0     0.532     99.8
2137.0     0.534     99.5
2138.0     0.536     99.2
2139.0     0.538     99.0
2140.0     0.540     98.7
2141.0     0.542     98.4
2142.0     0.544     98.2
2143.0     0.546     97.9
2144.0     0.547     97.6
2145.0     0.549     97.4
2146.0     0.551     97.1






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 4.0.


Acknowledgements
The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.


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