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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:44:42

Orbital Elements for BU741AB
WDS: BU741AB WDS ID/Discoverer
P: 151.300 Orbital period (years)
a: 1.343 Semi-major axis (arcseconds)
i: 81.8 Inclination (degrees)
Ω: 163.2 Longitude of ascending node (degrees)
T: 1870.600 Epoch of periastron passage (year)
e: 0.54 Eccentricity
ω: 259.7 Longitude of periastron (degrees)
Start-Year: 1950.0 Year
End-Year: 2100.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU741AB
Position: 025714.69-245809.9 Epoch-2000 right ascension and declination
WDS-ID: 02572-2458 WDS designation
Discoverer Code: BU741AB Discover designation and components
ADS number: 2242 Aitken Double Star catalog
HD number: 18455 HD catalog number
Hipparcos number: 13772 Hipparcos catalog number
V1: 8.06 Magnitude of the primary
V2: 8.20 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2019 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BU741AB



WDS 6th Orbit including measures of BU741AB

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


Ephemeris of BU741AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.220    139.7
-------------------------
1950.0     0.389    212.0
1951.0     0.369    215.5
1952.0     0.351    219.5
1953.0     0.335    223.9
1954.0     0.321    228.7
1955.0     0.309    233.9
1956.0     0.300    239.4
1957.0     0.293    245.3
1958.0     0.290    251.4
1959.0     0.290    257.5
1960.0     0.293    263.6
1961.0     0.299    269.5
1962.0     0.307    275.1
1963.0     0.319    280.4
1964.0     0.333    285.3
1965.0     0.349    289.7
1966.0     0.366    293.8
1967.0     0.385    297.4
1968.0     0.405    300.7
1969.0     0.426    303.7
1970.0     0.448    306.4
1971.0     0.471    308.8
1972.0     0.494    311.0
1973.0     0.518    313.1
1974.0     0.541    314.9
1975.0     0.565    316.6
1976.0     0.589    318.1
1977.0     0.613    319.6
1978.0     0.637    320.9
1979.0     0.661    322.1
1980.0     0.684    323.2
1981.0     0.707    324.3
1982.0     0.730    325.3
1983.0     0.753    326.2
1984.0     0.775    327.1
1985.0     0.797    328.0
1986.0     0.818    328.7
1987.0     0.838    329.5
1988.0     0.858    330.2
1989.0     0.876    330.9
1990.0     0.894    331.6
1991.0     0.912    332.2
1992.0     0.928    332.8
1993.0     0.943    333.4
1994.0     0.957    334.0
1995.0     0.969    334.5
1996.0     0.981    335.1
1997.0     0.990    335.6
1998.0     0.999    336.1
1999.0     1.005    336.6
2000.0     1.009    337.1
2001.0     1.012    337.6
2002.0     1.012    338.1
2003.0     1.010    338.6
2004.0     1.005    339.1
2005.0     0.997    339.7
2006.0     0.986    340.2
2007.0     0.971    340.7
2008.0     0.953    341.3
2009.0     0.930    341.9
2010.0     0.903    342.5
2011.0     0.871    343.1
2012.0     0.834    343.8
2013.0     0.791    344.6
2014.0     0.741    345.5
2015.0     0.685    346.5
2016.0     0.623    347.7
2017.0     0.553    349.2
2018.0     0.476    351.2
2019.0     0.394    353.9
2020.0     0.306    358.2
2021.0     0.217      5.9
2022.0     0.133     24.1
2023.0     0.089     73.7
2024.0     0.135    122.2
2025.0     0.220    139.7
2026.0     0.310    147.3
2027.0     0.398    151.5
2028.0     0.483    154.2
2029.0     0.563    156.1
2030.0     0.638    157.5
2031.0     0.708    158.6
2032.0     0.772    159.6
2033.0     0.831    160.4
2034.0     0.885    161.1
2035.0     0.934    161.7
2036.0     0.979    162.3
2037.0     1.020    162.8
2038.0     1.056    163.2
2039.0     1.090    163.7
2040.0     1.119    164.1
2041.0     1.146    164.5
2042.0     1.169    164.9
2043.0     1.189    165.3
2044.0     1.207    165.6
2045.0     1.223    166.0
2046.0     1.236    166.3
2047.0     1.247    166.7
2048.0     1.256    167.0
2049.0     1.262    167.3
2050.0     1.267    167.6
2051.0     1.271    167.9
2052.0     1.272    168.3
2053.0     1.272    168.6
2054.0     1.271    168.9
2055.0     1.268    169.2
2056.0     1.264    169.5
2057.0     1.259    169.9
2058.0     1.252    170.2
2059.0     1.244    170.5
2060.0     1.236    170.9
2061.0     1.226    171.2
2062.0     1.215    171.5
2063.0     1.203    171.9
2064.0     1.190    172.3
2065.0     1.177    172.6
2066.0     1.162    173.0
2067.0     1.147    173.4
2068.0     1.131    173.8
2069.0     1.114    174.2
2070.0     1.097    174.6
2071.0     1.079    175.1
2072.0     1.061    175.5
2073.0     1.041    176.0
2074.0     1.022    176.5
2075.0     1.001    177.0
2076.0     0.981    177.5
2077.0     0.959    178.0
2078.0     0.938    178.6
2079.0     0.916    179.2
2080.0     0.893    179.8
2081.0     0.870    180.5
2082.0     0.847    181.2
2083.0     0.824    181.9
2084.0     0.800    182.7
2085.0     0.776    183.5
2086.0     0.752    184.4
2087.0     0.727    185.4
2088.0     0.703    186.4
2089.0     0.678    187.5
2090.0     0.653    188.6
2091.0     0.629    189.9
2092.0     0.604    191.2
2093.0     0.579    192.7
2094.0     0.555    194.3
2095.0     0.531    196.1
2096.0     0.507    198.0
2097.0     0.483    200.1
2098.0     0.460    202.4
2099.0     0.437    205.0



 

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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