Double Star Calculator - Orbit

Orbital Elements for BU733AB
WDS: BU733AB WDS ID/Discoverer
P: 26.603 Orbital period (years)
a: 0.819 Semi-major axis (arcseconds)
i: 49.912 Inclination (degrees)
Ω: 109.314 Longitude of ascending node (degrees)
T: 1882.997 Epoch of periastron passage (year)
e: 0.358 Eccentricity
ω: 279.052 Longitude of periastron (degrees)
Start-Year: 2011.6985 Year
End-Year: 2038.3015 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU733AB
Position: 000210.18+270455.6 Epoch-2000 right ascension and declination
WDS-ID: 00022+2705 WDS designation
Discoverer Code: BU733AB Discover designation and components
ADS number: 17175 Aitken Double Star catalog
HD number: 224930 HD catalog number
Hipparcos number: 171 Hipparcos catalog number
V1: 5.83 Magnitude of the primary
V2: 8.9 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 1 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Mdz2022 Reference

Double Star Orbit for BU733AB



WDS 6th Orbit including measures of BU733AB

-- 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 BU733AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.710   183.05
--------------------------
2011.70    0.760   288.83
2011.80    0.753   289.78
2011.90    0.745   290.75
2012.00    0.737   291.75
2012.10    0.729   292.76
2012.20    0.720   293.80
2012.30    0.711   294.87
2012.40    0.702   295.96
2012.50    0.692   297.08
2012.60    0.682   298.24
2012.70    0.672   299.43
2012.80    0.661   300.65
2012.90    0.650   301.92
2013.00    0.639   303.24
2013.10    0.627   304.60
2013.20    0.615   306.01
2013.30    0.603   307.48
2013.40    0.590   309.02
2013.50    0.578   310.62
2013.60    0.565   312.29
2013.70    0.551   314.04
2013.80    0.538   315.88
2013.90    0.524   317.82
2014.00    0.511   319.86
2014.10    0.497   322.01
2014.20    0.483   324.28
2014.30    0.469   326.69
2014.40    0.456   329.24
2014.50    0.442   331.95
2014.60    0.429   334.82
2014.70    0.417   337.88
2014.80    0.405   341.11
2014.90    0.393   344.55
2015.00    0.382   348.18
2015.10    0.373   352.01
2015.20    0.364   356.03
2015.30    0.356     0.25
2015.40    0.350     4.63
2015.50    0.345     9.15
2015.60    0.342    13.78
2015.70    0.340    18.48
2015.80    0.340    23.21
2015.90    0.341    27.93
2016.00    0.344    32.59
2016.10    0.348    37.15
2016.20    0.354    41.57
2016.30    0.361    45.84
2016.40    0.370    49.92
2016.50    0.379    53.82
2016.60    0.389    57.52
2016.70    0.400    61.02
2016.80    0.412    64.34
2016.90    0.424    67.46
2017.00    0.436    70.41
2017.10    0.449    73.20
2017.20    0.462    75.83
2017.30    0.475    78.32
2017.40    0.488    80.67
2017.50    0.501    82.90
2017.60    0.514    85.03
2017.70    0.526    87.05
2017.80    0.539    88.97
2017.90    0.551    90.81
2018.00    0.563    92.57
2018.10    0.574    94.26
2018.20    0.585    95.88
2018.30    0.596    97.45
2018.40    0.607    98.95
2018.50    0.617   100.41
2018.60    0.627   101.82
2018.70    0.636   103.19
2018.80    0.645   104.52
2018.90    0.654   105.82
2019.00    0.662   107.08
2019.10    0.670   108.31
2019.20    0.677   109.51
2019.30    0.684   110.69
2019.40    0.691   111.84
2019.50    0.697   112.98
2019.60    0.703   114.09
2019.70    0.709   115.19
2019.80    0.714   116.26
2019.90    0.719   117.33
2020.00    0.724   118.37
2020.10    0.728   119.41
2020.20    0.732   120.43
2020.30    0.736   121.45
2020.40    0.739   122.45
2020.50    0.742   123.44
2020.60    0.745   124.43
2020.70    0.748   125.41
2020.80    0.750   126.38
2020.90    0.752   127.35
2021.00    0.754   128.31
2021.10    0.756   129.27
2021.20    0.757   130.22
2021.30    0.759   131.17
2021.40    0.760   132.12
2021.50    0.760   133.06
2021.60    0.761   134.01
2021.70    0.762   134.95
2021.80    0.762   135.89
2021.90    0.762   136.83
2022.00    0.762   137.77
2022.10    0.762   138.71
2022.20    0.762   139.65
2022.30    0.761   140.59
2022.40    0.761   141.53
2022.50    0.760   142.48
2022.60    0.759   143.42
2022.70    0.758   144.37
2022.80    0.758   145.32
2022.90    0.757   146.27
2023.00    0.755   147.23
2023.10    0.754   148.19
2023.20    0.753   149.15
2023.30    0.752   150.11
2023.40    0.750   151.08
2023.50    0.749   152.05
2023.60    0.748   153.02
2023.70    0.746   154.00
2023.80    0.745   154.99
2023.90    0.743   155.97
2024.00    0.742   156.96
2024.10    0.740   157.96
2024.20    0.738   158.96
2024.30    0.737   159.96
2024.40    0.735   160.97
2024.50    0.734   161.98
2024.60    0.732   163.00
2024.70    0.731   164.02
2024.80    0.729   165.04
2024.90    0.728   166.07
2025.00    0.726   167.10
2025.10    0.725   168.14
2025.20    0.723   169.18
2025.30    0.722   170.23
2025.40    0.721   171.28
2025.50    0.719   172.33
2025.60    0.718   173.38
2025.70    0.717   174.45
2025.80    0.716   175.51
2025.90    0.715   176.57
2026.00    0.714   177.64
2026.10    0.713   178.72
2026.20    0.712   179.79
2026.30    0.711   180.87
2026.40    0.711   181.95
2026.50    0.710   183.03
2026.60    0.710   184.11
2026.70    0.709   185.20
2026.80    0.709   186.28
2026.90    0.708   187.37
2027.00    0.708   188.46
2027.10    0.708   189.55
2027.20    0.708   190.63
2027.30    0.708   191.72
2027.40    0.708   192.81
2027.50    0.709   193.90
2027.60    0.709   194.98
2027.70    0.709   196.07
2027.80    0.710   197.15
2027.90    0.711   198.23
2028.00    0.711   199.31
2028.10    0.712   200.39
2028.20    0.713   201.47
2028.30    0.714   202.54
2028.40    0.715   203.61
2028.50    0.716   204.67
2028.60    0.717   205.74
2028.70    0.719   206.80
2028.80    0.720   207.85
2028.90    0.722   208.90
2029.00    0.723   209.95
2029.10    0.725   210.99
2029.20    0.727   212.02
2029.30    0.728   213.06
2029.40    0.730   214.08
2029.50    0.732   215.10
2029.60    0.734   216.12
2029.70    0.736   217.13
2029.80    0.738   218.13
2029.90    0.741   219.13
2030.00    0.743   220.12
2030.10    0.745   221.11
2030.20    0.748   222.09
2030.30    0.750   223.06
2030.40    0.752   224.03
2030.50    0.755   224.99
2030.60    0.757   225.94
2030.70    0.760   226.89
2030.80    0.763   227.83
2030.90    0.765   228.77
2031.00    0.768   229.70
2031.10    0.771   230.62
2031.20    0.773   231.54
2031.30    0.776   232.45
2031.40    0.779   233.35
2031.50    0.782   234.25
2031.60    0.784   235.14
2031.70    0.787   236.02
2031.80    0.790   236.90
2031.90    0.793   237.77
2032.00    0.795   238.64
2032.10    0.798   239.50
2032.20    0.801   240.35
2032.30    0.803   241.20
2032.40    0.806   242.04
2032.50    0.809   242.88
2032.60    0.811   243.71
2032.70    0.814   244.54
2032.80    0.816   245.36
2032.90    0.819   246.17
2033.00    0.821   246.98
2033.10    0.824   247.79
2033.20    0.826   248.59
2033.30    0.828   249.39
2033.40    0.831   250.18
2033.50    0.833   250.97
2033.60    0.835   251.76
2033.70    0.837   252.54
2033.80    0.839   253.32
2033.90    0.840   254.09
2034.00    0.842   254.86
2034.10    0.844   255.63
2034.20    0.845   256.40
2034.30    0.847   257.16
2034.40    0.848   257.92
2034.50    0.849   258.68
2034.60    0.850   259.43
2034.70    0.851   260.19
2034.80    0.852   260.94
2034.90    0.853   261.69
2035.00    0.853   262.44
2035.10    0.854   263.19
2035.20    0.854   263.94
2035.30    0.854   264.68
2035.40    0.854   265.43
2035.50    0.854   266.18
2035.60    0.854   266.93
2035.70    0.853   267.68
2035.80    0.852   268.43
2035.90    0.852   269.18
2036.00    0.850   269.93
2036.10    0.849   270.69
2036.20    0.848   271.45
2036.30    0.846   272.21
2036.40    0.844   272.97
2036.50    0.842   273.74
2036.60    0.840   274.51
2036.70    0.837   275.29
2036.80    0.834   276.07
2036.90    0.831   276.86
2037.00    0.828   277.65
2037.10    0.825   278.45
2037.20    0.821   279.26
2037.30    0.817   280.07
2037.40    0.812   280.89
2037.50    0.808   281.72
2037.60    0.803   282.56
2037.70    0.798   283.42
2037.80    0.792   284.28
2037.90    0.787   285.16
2038.00    0.781   286.04
2038.10    0.774   286.95
2038.20    0.768   287.87
2038.30    0.761   288.80






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 14:34:04



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