Double Star Calculator - Orbit

Orbital Elements for BU916

WDS:	BU916	WDS ID/Discoverer
P:	1386.460	Orbital period (years)
a:	1.177	Semi-major axis (arcseconds)
i:	45.2	Inclination (degrees)
Ω:	143.7	Longitude of ascending node (degrees)
T:	1991.780	Epoch of periastron passage (year)
e:	0.787	Eccentricity
ω:	350.2	Longitude of periastron (degrees)
Start-Year:	1331.77	Year
End-Year:	2718.23	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU916
Position:	111403.66-152607.1	Epoch-2000 right ascension and declination
WDS-ID:	11141-1526	WDS designation
Discoverer Code:	BU916	Discover designation and components
ADS number:	8096	Aitken Double Star catalog
HD number:	97635	HD catalog number
Hipparcos number:	54866	Hipparcos catalog number
V1:	8.20	Magnitude of the primary
V2:	9.35	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2004	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Zir2010	Reference

Double Star Orbit for BU916

WDS 6th Orbit including measures of BU916

Error: Timeout while trying to load WDS 6th Orbit image.

Ephemeris of BU916

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.303   212.10
--------------------------
1331.77    2.089   317.95
1341.77    2.088   318.31
1351.77    2.087   318.67
1361.77    2.084   319.03
1371.77    2.081   319.39
1381.77    2.078   319.75
1391.77    2.073   320.11
1401.77    2.068   320.48
1411.77    2.062   320.84
1421.77    2.056   321.21
1431.77    2.049   321.58
1441.77    2.041   321.96
1451.77    2.032   322.33
1461.77    2.023   322.72
1471.77    2.013   323.10
1481.77    2.002   323.49
1491.77    1.990   323.88
1501.77    1.978   324.28
1511.77    1.965   324.68
1521.77    1.951   325.09
1531.77    1.937   325.50
1541.77    1.921   325.92
1551.77    1.905   326.35
1561.77    1.888   326.78
1571.77    1.870   327.23
1581.77    1.851   327.68
1591.77    1.832   328.14
1601.77    1.812   328.61
1611.77    1.790   329.09
1621.77    1.768   329.59
1631.77    1.745   330.09
1641.77    1.721   330.61
1651.77    1.696   331.15
1661.77    1.670   331.70
1671.77    1.643   332.27
1681.77    1.615   332.86
1691.77    1.586   333.47
1701.77    1.556   334.10
1711.77    1.524   334.76
1721.77    1.492   335.45
1731.77    1.458   336.17
1741.77    1.423   336.92
1751.77    1.387   337.71
1761.77    1.350   338.55
1771.77    1.311   339.43
1781.77    1.271   340.37
1791.77    1.229   341.37
1801.77    1.186   342.44
1811.77    1.141   343.60
1821.77    1.095   344.85
1831.77    1.046   346.22
1841.77    0.996   347.72
1851.77    0.944   349.38
1861.77    0.890   351.24
1871.77    0.834   353.34
1881.77    0.776   355.76
1891.77    0.715   358.58
1901.77    0.652     1.93
1911.77    0.588     6.01
1921.77    0.521    11.11
1931.77    0.453    17.73
1941.77    0.386    26.68
1951.77    0.323    39.26
1961.77    0.270    57.33
1971.77    0.239    81.91
1981.77    0.236   110.06
1991.77    0.249   136.74
2001.77    0.259   160.89
2011.77    0.269   183.37
2021.77    0.289   203.64
2031.77    0.322   220.56
2041.77    0.365   233.91
2051.77    0.415   244.24
2061.77    0.469   252.27
2071.77    0.524   258.64
2081.77    0.579   263.78
2091.77    0.634   268.04
2101.77    0.689   271.62
2111.77    0.742   274.68
2121.77    0.793   277.33
2131.77    0.844   279.67
2141.77    0.893   281.74
2151.77    0.941   283.61
2161.77    0.987   285.29
2171.77    1.032   286.82
2181.77    1.076   288.23
2191.77    1.119   289.53
2201.77    1.160   290.73
2211.77    1.200   291.86
2221.77    1.239   292.91
2231.77    1.277   293.90
2241.77    1.314   294.83
2251.77    1.349   295.71
2261.77    1.384   296.55
2271.77    1.417   297.34
2281.77    1.450   298.11
2291.77    1.481   298.83
2301.77    1.512   299.53
2311.77    1.542   300.20
2321.77    1.570   300.85
2331.77    1.598   301.47
2341.77    1.625   302.07
2351.77    1.651   302.66
2361.77    1.676   303.22
2371.77    1.701   303.77
2381.77    1.724   304.30
2391.77    1.747   304.82
2401.77    1.769   305.33
2411.77    1.790   305.82
2421.77    1.810   306.30
2431.77    1.830   306.78
2441.77    1.849   307.24
2451.77    1.867   307.69
2461.77    1.884   308.13
2471.77    1.901   308.57
2481.77    1.917   309.00
2491.77    1.932   309.42
2501.77    1.946   309.84
2511.77    1.960   310.25
2521.77    1.973   310.65
2531.77    1.985   311.05
2541.77    1.997   311.45
2551.77    2.007   311.84
2561.77    2.018   312.22
2571.77    2.027   312.61
2581.77    2.036   312.98
2591.77    2.044   313.36
2601.77    2.052   313.73
2611.77    2.058   314.10
2621.77    2.065   314.47
2631.77    2.070   314.84
2641.77    2.075   315.20
2651.77    2.079   315.56
2661.77    2.082   315.92
2671.77    2.085   316.29
2681.77    2.087   316.64
2691.77    2.089   317.00
2701.77    2.090   317.36
2711.77    2.090   317.72

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 16:35:32