Double Star Calculator - Orbit

Orbital Elements for BU1117
WDS: BU1117 WDS ID/Discoverer
P: 1096.503 Orbital period (years)
a: 2.72274 Semi-major axis (arcseconds)
i: 82.822 Inclination (degrees)
Ω: 133.751 Longitude of ascending node (degrees)
T: 2080.273 Epoch of periastron passage (year)
e: 0.81785 Eccentricity
ω: 251.543 Longitude of periastron (degrees)
Start-Year: 1476.7483499999998 Year
End-Year: 2573.25165 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU1117
Position: 165648.01-230901.0 Epoch-2000 right ascension and declination
WDS-ID: 16568-2309 WDS designation
Discoverer Code: BU1117 Discover designation and components
ADS number: 10265 Aitken Double Star catalog
HD number: 152849 HD catalog number
Hipparcos number: 82925 Hipparcos catalog number
V1: 6.25 Magnitude of the primary
V2: 6.32 Magnitude of the secondary
Equinox: Equinox
Date: 2015 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: Izm2019 Reference

Double Star Orbit for BU1117



WDS 6th Orbit including measures of BU1117

-- 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 BU1117
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.020   305.88
--------------------------
1476.75    1.900   151.24
1486.75    1.861   151.73
1496.75    1.821   152.25
1506.75    1.780   152.79
1516.75    1.738   153.36
1526.75    1.696   153.95
1536.75    1.653   154.57
1546.75    1.609   155.23
1556.75    1.564   155.93
1566.75    1.519   156.66
1576.75    1.473   157.45
1586.75    1.427   158.28
1596.75    1.381   159.17
1606.75    1.333   160.12
1616.75    1.286   161.14
1626.75    1.238   162.24
1636.75    1.190   163.42
1646.75    1.142   164.71
1656.75    1.094   166.11
1666.75    1.046   167.64
1676.75    0.998   169.32
1686.75    0.950   171.17
1696.75    0.903   173.21
1706.75    0.856   175.47
1716.75    0.811   178.00
1726.75    0.766   180.82
1736.75    0.723   183.98
1746.75    0.682   187.52
1756.75    0.644   191.51
1766.75    0.608   195.99
1776.75    0.576   200.99
1786.75    0.549   206.53
1796.75    0.526   212.60
1806.75    0.510   219.13
1816.75    0.500   226.01
1826.75    0.497   233.08
1836.75    0.501   240.12
1846.75    0.512   246.97
1856.75    0.529   253.44
1866.75    0.552   259.45
1876.75    0.579   264.94
1886.75    0.611   269.89
1896.75    0.645   274.34
1906.75    0.682   278.32
1916.75    0.720   281.89
1926.75    0.760   285.08
1936.75    0.799   287.97
1946.75    0.838   290.58
1956.75    0.876   292.96
1966.75    0.912   295.15
1976.75    0.946   297.18
1986.75    0.976   299.07
1996.75    1.000   300.86
2006.75    1.018   302.58
2016.75    1.026   304.25
2026.75    1.020   305.92
2036.75    0.995   307.64
2046.75    0.941   309.50
2056.75    0.838   311.69
2066.75    0.651   314.82
2076.75    0.319   322.78
2086.75    0.165   110.71
2096.75    0.579   128.44
2106.75    0.902   131.73
2116.75    1.154   133.39
2126.75    1.356   134.50
2136.75    1.522   135.35
2146.75    1.662   136.04
2156.75    1.781   136.63
2166.75    1.883   137.15
2176.75    1.972   137.62
2186.75    2.049   138.05
2196.75    2.116   138.46
2206.75    2.174   138.84
2216.75    2.225   139.20
2226.75    2.269   139.54
2236.75    2.308   139.88
2246.75    2.340   140.20
2256.75    2.368   140.52
2266.75    2.391   140.83
2276.75    2.410   141.13
2286.75    2.425   141.43
2296.75    2.437   141.73
2306.75    2.445   142.02
2316.75    2.450   142.31
2326.75    2.452   142.60
2336.75    2.451   142.89
2346.75    2.448   143.19
2356.75    2.443   143.48
2366.75    2.435   143.77
2376.75    2.425   144.07
2386.75    2.413   144.37
2396.75    2.398   144.67
2406.75    2.382   144.98
2416.75    2.365   145.29
2426.75    2.345   145.60
2436.75    2.324   145.92
2446.75    2.301   146.25
2456.75    2.277   146.59
2466.75    2.251   146.93
2476.75    2.224   147.28
2486.75    2.195   147.63
2496.75    2.166   148.00
2506.75    2.135   148.38
2516.75    2.102   148.77
2526.75    2.069   149.17
2536.75    2.035   149.59
2546.75    1.999   150.02
2556.75    1.962   150.47
2566.75    1.925   150.93






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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 17:32:23



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