Double Star Calculator - Orbit

Orbital Elements for BU1235

WDS:	BU1235	WDS ID/Discoverer
P:	218.310	Orbital period (years)
a:	0.424	Semi-major axis (arcseconds)
i:	85.3	Inclination (degrees)
Ω:	57.1	Longitude of ascending node (degrees)
T:	1973.930	Epoch of periastron passage (year)
e:	0.123	Eccentricity
ω:	184.3	Longitude of periastron (degrees)
Start-Year:	1915.845	Year
End-Year:	2134.155	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU1235
Position:	042429.47+224429.8	Epoch-2000 right ascension and declination
WDS-ID:	04245+2244	WDS designation
Discoverer Code:	BU1235	Discover designation and components
ADS number:	3191	Aitken Double Star catalog
HD number:	27832	HD catalog number
Hipparcos number:	20580	Hipparcos catalog number
V1:	8.71	Magnitude of the primary
V2:	8.87	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1996	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:	Zir2010	Reference

Double Star Orbit for BU1235

WDS 6th Orbit including measures of BU1235

-- 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 BU1235

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.116    40.15
--------------------------
1915.85    0.119    73.92
1916.85    0.108    75.80
1917.85    0.097    78.12
1918.85    0.086    81.03
1919.85    0.075    84.80
1920.85    0.064    89.80
1921.85    0.055    96.67
1922.85    0.046   106.34
1923.85    0.039   119.94
1924.85    0.035   137.88
1925.85    0.035   157.89
1926.85    0.039   175.75
1927.85    0.046   189.27
1928.85    0.055   198.86
1929.85    0.065   205.69
1930.85    0.075   210.67
1931.85    0.086   214.41
1932.85    0.097   217.32
1933.85    0.108   219.63
1934.85    0.119   221.50
1935.85    0.130   223.06
1936.85    0.141   224.37
1937.85    0.152   225.49
1938.85    0.163   226.46
1939.85    0.174   227.31
1940.85    0.185   228.06
1941.85    0.195   228.73
1942.85    0.206   229.33
1943.85    0.216   229.87
1944.85    0.226   230.37
1945.85    0.235   230.82
1946.85    0.245   231.24
1947.85    0.254   231.62
1948.85    0.263   231.98
1949.85    0.272   232.32
1950.85    0.280   232.64
1951.85    0.288   232.94
1952.85    0.296   233.22
1953.85    0.304   233.49
1954.85    0.311   233.74
1955.85    0.318   233.99
1956.85    0.324   234.22
1957.85    0.330   234.45
1958.85    0.336   234.66
1959.85    0.341   234.87
1960.85    0.346   235.08
1961.85    0.351   235.28
1962.85    0.355   235.47
1963.85    0.358   235.66
1964.85    0.362   235.85
1965.85    0.364   236.03
1966.85    0.367   236.21
1967.85    0.369   236.39
1968.85    0.370   236.56
1969.85    0.371   236.74
1970.85    0.372   236.91
1971.85    0.372   237.09
1972.85    0.372   237.26
1973.85    0.371   237.44
1974.85    0.370   237.61
1975.85    0.368   237.79
1976.85    0.366   237.97
1977.85    0.363   238.15
1978.85    0.360   238.34
1979.85    0.357   238.52
1980.85    0.353   238.71
1981.85    0.349   238.91
1982.85    0.344   239.11
1983.85    0.339   239.32
1984.85    0.333   239.53
1985.85    0.327   239.75
1986.85    0.321   239.98
1987.85    0.314   240.22
1988.85    0.307   240.47
1989.85    0.300   240.73
1990.85    0.292   241.00
1991.85    0.284   241.29
1992.85    0.276   241.60
1993.85    0.267   241.93
1994.85    0.258   242.28
1995.85    0.249   242.65
1996.85    0.239   243.06
1997.85    0.230   243.50
1998.85    0.220   243.97
1999.85    0.209   244.50
2000.85    0.199   245.08
2001.85    0.188   245.72
2002.85    0.178   246.44
2003.85    0.167   247.26
2004.85    0.155   248.19
2005.85    0.144   249.26
2006.85    0.133   250.52
2007.85    0.122   252.01
2008.85    0.110   253.80
2009.85    0.099   256.01
2010.85    0.088   258.79
2011.85    0.077   262.38
2012.85    0.066   267.16
2013.85    0.056   273.73
2014.85    0.047   283.06
2015.85    0.039   296.40
2016.85    0.035   314.46
2017.85    0.034   335.18
2018.85    0.038   353.94
2019.85    0.045     8.06
2020.85    0.054    17.97
2021.85    0.064    24.93
2022.85    0.075    29.96
2023.85    0.086    33.71
2024.85    0.097    36.60
2025.85    0.108    38.89
2026.85    0.120    40.74
2027.85    0.131    42.27
2028.85    0.143    43.56
2029.85    0.154    44.66
2030.85    0.165    45.60
2031.85    0.177    46.43
2032.85    0.188    47.15
2033.85    0.199    47.80
2034.85    0.209    48.38
2035.85    0.220    48.90
2036.85    0.231    49.38
2037.85    0.241    49.81
2038.85    0.251    50.21
2039.85    0.261    50.57
2040.85    0.271    50.91
2041.85    0.281    51.23
2042.85    0.291    51.53
2043.85    0.300    51.80
2044.85    0.309    52.06
2045.85    0.318    52.31
2046.85    0.327    52.54
2047.85    0.335    52.76
2048.85    0.344    52.97
2049.85    0.352    53.17
2050.85    0.359    53.36
2051.85    0.367    53.54
2052.85    0.374    53.72
2053.85    0.382    53.89
2054.85    0.388    54.05
2055.85    0.395    54.20
2056.85    0.402    54.36
2057.85    0.408    54.50
2058.85    0.414    54.65
2059.85    0.419    54.79
2060.85    0.425    54.92
2061.85    0.430    55.05
2062.85    0.435    55.18
2063.85    0.439    55.31
2064.85    0.444    55.43
2065.85    0.448    55.55
2066.85    0.451    55.67
2067.85    0.455    55.79
2068.85    0.458    55.91
2069.85    0.461    56.02
2070.85    0.464    56.13
2071.85    0.466    56.24
2072.85    0.469    56.35
2073.85    0.470    56.46
2074.85    0.472    56.57
2075.85    0.473    56.68
2076.85    0.474    56.79
2077.85    0.475    56.89
2078.85    0.476    57.00
2079.85    0.476    57.11
2080.85    0.476    57.21
2081.85    0.476    57.32
2082.85    0.475    57.43
2083.85    0.474    57.53
2084.85    0.473    57.64
2085.85    0.472    57.75
2086.85    0.470    57.86
2087.85    0.468    57.97
2088.85    0.466    58.08
2089.85    0.463    58.19
2090.85    0.460    58.30
2091.85    0.457    58.42
2092.85    0.454    58.53
2093.85    0.450    58.65
2094.85    0.446    58.77
2095.85    0.442    58.89
2096.85    0.438    59.02
2097.85    0.433    59.15
2098.85    0.428    59.28
2099.85    0.423    59.41
2100.85    0.418    59.54
2101.85    0.412    59.68
2102.85    0.406    59.83
2103.85    0.400    59.98
2104.85    0.394    60.13
2105.85    0.387    60.29
2106.85    0.380    60.45
2107.85    0.373    60.62
2108.85    0.366    60.80
2109.85    0.358    60.98
2110.85    0.351    61.17
2111.85    0.343    61.37
2112.85    0.334    61.58
2113.85    0.326    61.81
2114.85    0.317    62.04
2115.85    0.308    62.29
2116.85    0.299    62.55
2117.85    0.290    62.82
2118.85    0.281    63.12
2119.85    0.271    63.44
2120.85    0.261    63.78
2121.85    0.252    64.14
2122.85    0.241    64.54
2123.85    0.231    64.97
2124.85    0.221    65.44
2125.85    0.210    65.96
2126.85    0.200    66.54
2127.85    0.189    67.17
2128.85    0.178    67.89
2129.85    0.167    68.70
2130.85    0.156    69.63
2131.85    0.145    70.69
2132.85    0.134    71.94
2133.85    0.122    73.41

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 15:23:02