Double Star Calculator - Orbit

Orbital Elements for BU763AB
WDS: BU763AB WDS ID/Discoverer
P: 180.200 Orbital period (years)
a: 0.609 Semi-major axis (arcseconds)
i: 32.1 Inclination (degrees)
Ω: 216.3 Longitude of ascending node (degrees)
T: 2003.820 Epoch of periastron passage (year)
e: 0.806 Eccentricity
ω: 181.8 Longitude of periastron (degrees)
Start-Year: 1934.9 Year
End-Year: 2115.1 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU763AB
Position: 202353.17-422522.2 Epoch-2000 right ascension and declination
WDS-ID: 20239-4225 WDS designation
Discoverer Code: BU763AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 193807 HD catalog number
Hipparcos number: 100591 Hipparcos catalog number
V1: 5.67 Magnitude of the primary
V2: 7.25 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2021 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: Tok2021f Reference

Double Star Orbit for BU763AB



WDS 6th Orbit including measures of BU763AB

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


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of BU763AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.594   186.90
--------------------------
1934.90    1.054   224.52
1935.90    1.050   224.86
1936.90    1.045   225.19
1937.90    1.040   225.54
1938.90    1.035   225.88
1939.90    1.030   226.23
1940.90    1.025   226.58
1941.90    1.019   226.94
1942.90    1.013   227.30
1943.90    1.007   227.66
1944.90    1.001   228.03
1945.90    0.994   228.40
1946.90    0.987   228.78
1947.90    0.980   229.17
1948.90    0.973   229.56
1949.90    0.965   229.95
1950.90    0.958   230.35
1951.90    0.950   230.76
1952.90    0.942   231.18
1953.90    0.933   231.60
1954.90    0.924   232.03
1955.90    0.915   232.47
1956.90    0.906   232.92
1957.90    0.897   233.37
1958.90    0.887   233.84
1959.90    0.877   234.32
1960.90    0.867   234.81
1961.90    0.856   235.31
1962.90    0.845   235.82
1963.90    0.834   236.35
1964.90    0.823   236.89
1965.90    0.811   237.45
1966.90    0.799   238.02
1967.90    0.786   238.61
1968.90    0.774   239.22
1969.90    0.761   239.86
1970.90    0.747   240.51
1971.90    0.734   241.19
1972.90    0.719   241.89
1973.90    0.705   242.62
1974.90    0.690   243.39
1975.90    0.675   244.18
1976.90    0.659   245.02
1977.90    0.643   245.89
1978.90    0.627   246.82
1979.90    0.610   247.79
1980.90    0.593   248.81
1981.90    0.575   249.90
1982.90    0.557   251.06
1983.90    0.538   252.30
1984.90    0.519   253.63
1985.90    0.499   255.07
1986.90    0.479   256.62
1987.90    0.458   258.32
1988.90    0.436   260.18
1989.90    0.414   262.23
1990.90    0.392   264.52
1991.90    0.368   267.10
1992.90    0.344   270.03
1993.90    0.320   273.40
1994.90    0.294   277.35
1995.90    0.269   282.05
1996.90    0.243   287.74
1997.90    0.217   294.79
1998.90    0.191   303.74
1999.90    0.168   315.35
2000.90    0.147   330.54
2001.90    0.131   350.08
2002.90    0.121    13.77
2003.90    0.118    39.96
2004.90    0.121    66.16
2005.90    0.131    89.73
2006.90    0.149   108.89
2007.90    0.171   123.56
2008.90    0.196   134.68
2009.90    0.222   143.22
2010.90    0.249   149.94
2011.90    0.275   155.37
2012.90    0.301   159.84
2013.90    0.327   163.62
2014.90    0.352   166.85
2015.90    0.376   169.66
2016.90    0.399   172.13
2017.90    0.422   174.34
2018.90    0.444   176.32
2019.90    0.466   178.11
2020.90    0.487   179.75
2021.90    0.507   181.25
2022.90    0.527   182.64
2023.90    0.546   183.93
2024.90    0.565   185.13
2025.90    0.583   186.26
2026.90    0.601   187.32
2027.90    0.618   188.32
2028.90    0.635   189.26
2029.90    0.652   190.16
2030.90    0.668   191.01
2031.90    0.683   191.83
2032.90    0.698   192.61
2033.90    0.713   193.35
2034.90    0.727   194.07
2035.90    0.741   194.76
2036.90    0.755   195.42
2037.90    0.768   196.06
2038.90    0.781   196.68
2039.90    0.794   197.28
2040.90    0.806   197.86
2041.90    0.818   198.42
2042.90    0.830   198.97
2043.90    0.841   199.50
2044.90    0.852   200.02
2045.90    0.863   200.53
2046.90    0.873   201.02
2047.90    0.884   201.50
2048.90    0.893   201.97
2049.90    0.903   202.43
2050.90    0.912   202.88
2051.90    0.922   203.33
2052.90    0.930   203.76
2053.90    0.939   204.19
2054.90    0.947   204.60
2055.90    0.955   205.01
2056.90    0.963   205.42
2057.90    0.971   205.81
2058.90    0.978   206.21
2059.90    0.985   206.59
2060.90    0.992   206.97
2061.90    0.999   207.35
2062.90    1.005   207.72
2063.90    1.011   208.08
2064.90    1.017   208.44
2065.90    1.023   208.80
2066.90    1.029   209.15
2067.90    1.034   209.50
2068.90    1.039   209.85
2069.90    1.044   210.19
2070.90    1.049   210.53
2071.90    1.053   210.87
2072.90    1.057   211.20
2073.90    1.061   211.53
2074.90    1.065   211.86
2075.90    1.069   212.18
2076.90    1.072   212.51
2077.90    1.075   212.83
2078.90    1.078   213.15
2079.90    1.081   213.47
2080.90    1.084   213.79
2081.90    1.086   214.10
2082.90    1.088   214.42
2083.90    1.090   214.73
2084.90    1.092   215.04
2085.90    1.094   215.35
2086.90    1.095   215.66
2087.90    1.097   215.97
2088.90    1.098   216.28
2089.90    1.098   216.59
2090.90    1.099   216.90
2091.90    1.099   217.20
2092.90    1.100   217.51
2093.90    1.100   217.82
2094.90    1.100   218.13
2095.90    1.099   218.43
2096.90    1.099   218.74
2097.90    1.098   219.05
2098.90    1.097   219.36
2099.90    1.096   219.67
2100.90    1.095   219.98
2101.90    1.093   220.29
2102.90    1.091   220.60
2103.90    1.089   220.91
2104.90    1.087   221.22
2105.90    1.085   221.54
2106.90    1.082   221.86
2107.90    1.080   222.17
2108.90    1.077   222.49
2109.90    1.074   222.81
2110.90    1.070   223.14
2111.90    1.067   223.46
2112.90    1.063   223.79
2113.90    1.059   224.12
2114.90    1.055   224.45






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 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.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 18:14:53



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