Double Star Calculator - Orbit

Orbital Elements for STF1937AB
WDS: STF1937AB WDS ID/Discoverer
P: 41.630 Orbital period (years)
a: 0.86226 Semi-major axis (arcseconds)
i: 58.084 Inclination (degrees)
Ω: 202.827 Longitude of ascending node (degrees)
T: 1975.547 Epoch of periastron passage (year)
e: 0.27907 Eccentricity
ω: 39.885 Longitude of periastron (degrees)
Start-Year: 2004.1851817085396 Year
End-Year: 2045.8148182914604 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1937AB
Position: 152312.23+301717.7 Epoch-2000 right ascension and declination
WDS-ID: 15232+3017 WDS designation
Discoverer Code: STF1937AB Discover designation and components
ADS number: 9617 Aitken Double Star catalog
HD number: 137107 HD catalog number
Hipparcos number: 75312 Hipparcos catalog number
V1: 5.64 Magnitude of the primary
V2: 5.95 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 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: Mut2010b Reference

Double Star Orbit for STF1937AB



WDS 6th Orbit including measures of STF1937AB

-- 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 STF1937AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.817     7.28
--------------------------
2004.19    0.542    98.41
2004.29    0.539    99.53
2004.39    0.535   100.66
2004.49    0.532   101.80
2004.59    0.530   102.96
2004.69    0.527   104.13
2004.79    0.524   105.31
2004.89    0.522   106.50
2004.99    0.520   107.71
2005.09    0.518   108.92
2005.19    0.516   110.14
2005.29    0.514   111.38
2005.39    0.512   112.62
2005.49    0.511   113.86
2005.59    0.509   115.12
2005.69    0.508   116.38
2005.79    0.507   117.65
2005.89    0.506   118.92
2005.99    0.506   120.19
2006.09    0.505   121.47
2006.19    0.505   122.75
2006.29    0.505   124.03
2006.39    0.505   125.31
2006.49    0.505   126.59
2006.59    0.505   127.87
2006.69    0.506   129.15
2006.79    0.506   130.42
2006.89    0.507   131.69
2006.99    0.508   132.96
2007.09    0.509   134.22
2007.19    0.510   135.48
2007.29    0.512   136.73
2007.39    0.513   137.97
2007.49    0.515   139.20
2007.59    0.517   140.43
2007.69    0.519   141.65
2007.79    0.521   142.85
2007.89    0.523   144.05
2007.99    0.525   145.24
2008.09    0.528   146.42
2008.19    0.530   147.58
2008.29    0.533   148.74
2008.39    0.536   149.88
2008.49    0.539   151.01
2008.59    0.541   152.13
2008.69    0.544   153.24
2008.79    0.547   154.34
2008.89    0.551   155.42
2008.99    0.554   156.49
2009.09    0.557   157.55
2009.19    0.560   158.59
2009.29    0.564   159.63
2009.39    0.567   160.65
2009.49    0.571   161.65
2009.59    0.574   162.65
2009.69    0.578   163.64
2009.79    0.581   164.61
2009.89    0.585   165.57
2009.99    0.588   166.52
2010.09    0.592   167.46
2010.19    0.595   168.38
2010.29    0.599   169.30
2010.39    0.602   170.20
2010.49    0.606   171.10
2010.59    0.609   171.98
2010.69    0.612   172.86
2010.79    0.616   173.73
2010.89    0.619   174.58
2010.99    0.622   175.43
2011.09    0.625   176.27
2011.19    0.629   177.10
2011.29    0.632   177.92
2011.39    0.635   178.73
2011.49    0.637   179.54
2011.59    0.640   180.34
2011.69    0.643   181.13
2011.79    0.646   181.92
2011.89    0.648   182.70
2011.99    0.650   183.47
2012.09    0.653   184.24
2012.19    0.655   185.01
2012.29    0.657   185.77
2012.39    0.659   186.52
2012.49    0.660   187.27
2012.59    0.662   188.02
2012.69    0.663   188.76
2012.79    0.664   189.50
2012.89    0.666   190.24
2012.99    0.666   190.98
2013.09    0.667   191.71
2013.19    0.668   192.44
2013.29    0.668   193.18
2013.39    0.668   193.91
2013.49    0.668   194.64
2013.59    0.668   195.37
2013.69    0.668   196.10
2013.79    0.667   196.83
2013.89    0.666   197.57
2013.99    0.665   198.30
2014.09    0.664   199.04
2014.19    0.663   199.78
2014.29    0.661   200.53
2014.39    0.659   201.27
2014.49    0.657   202.03
2014.59    0.655   202.79
2014.69    0.652   203.55
2014.79    0.650   204.32
2014.89    0.647   205.10
2014.99    0.644   205.88
2015.09    0.640   206.67
2015.19    0.636   207.47
2015.29    0.633   208.28
2015.39    0.628   209.11
2015.49    0.624   209.94
2015.59    0.620   210.78
2015.69    0.615   211.64
2015.79    0.610   212.51
2015.89    0.605   213.39
2015.99    0.599   214.29
2016.09    0.594   215.21
2016.19    0.588   216.15
2016.29    0.582   217.10
2016.39    0.576   218.08
2016.49    0.569   219.07
2016.59    0.563   220.09
2016.69    0.556   221.13
2016.79    0.549   222.20
2016.89    0.542   223.30
2016.99    0.535   224.42
2017.09    0.528   225.57
2017.19    0.521   226.76
2017.29    0.514   227.98
2017.39    0.506   229.24
2017.49    0.499   230.53
2017.59    0.491   231.86
2017.69    0.483   233.24
2017.79    0.476   234.66
2017.89    0.468   236.12
2017.99    0.461   237.64
2018.09    0.453   239.20
2018.19    0.446   240.81
2018.29    0.439   242.48
2018.39    0.431   244.21
2018.49    0.424   245.99
2018.59    0.418   247.83
2018.69    0.411   249.73
2018.79    0.405   251.69
2018.89    0.398   253.72
2018.99    0.393   255.81
2019.09    0.387   257.95
2019.19    0.382   260.16
2019.29    0.377   262.43
2019.39    0.373   264.75
2019.49    0.369   267.13
2019.59    0.365   269.55
2019.69    0.362   272.02
2019.79    0.359   274.53
2019.89    0.357   277.07
2019.99    0.356   279.64
2020.09    0.355   282.22
2020.19    0.354   284.82
2020.29    0.355   287.42
2020.39    0.355   290.01
2020.49    0.356   292.59
2020.59    0.358   295.14
2020.69    0.360   297.67
2020.79    0.363   300.17
2020.89    0.367   302.62
2020.99    0.370   305.02
2021.09    0.375   307.37
2021.19    0.379   309.67
2021.29    0.385   311.91
2021.39    0.390   314.08
2021.49    0.396   316.19
2021.59    0.403   318.24
2021.69    0.409   320.22
2021.79    0.416   322.14
2021.89    0.423   323.99
2021.99    0.431   325.78
2022.09    0.439   327.51
2022.19    0.447   329.18
2022.29    0.455   330.78
2022.39    0.463   332.33
2022.49    0.472   333.83
2022.59    0.480   335.27
2022.69    0.489   336.66
2022.79    0.498   338.00
2022.89    0.507   339.29
2022.99    0.516   340.54
2023.09    0.525   341.75
2023.19    0.534   342.91
2023.29    0.543   344.04
2023.39    0.553   345.13
2023.49    0.562   346.18
2023.59    0.571   347.19
2023.69    0.580   348.18
2023.79    0.590   349.13
2023.89    0.599   350.06
2023.99    0.608   350.96
2024.09    0.617   351.83
2024.19    0.626   352.67
2024.29    0.635   353.49
2024.39    0.644   354.29
2024.49    0.653   355.06
2024.59    0.662   355.82
2024.69    0.671   356.55
2024.79    0.680   357.27
2024.89    0.689   357.96
2024.99    0.697   358.64
2025.09    0.706   359.31
2025.19    0.714   359.95
2025.29    0.723     0.59
2025.39    0.731     1.20
2025.49    0.739     1.81
2025.59    0.747     2.40
2025.69    0.755     2.98
2025.79    0.763     3.54
2025.89    0.771     4.10
2025.99    0.779     4.64
2026.09    0.787     5.17
2026.19    0.794     5.70
2026.29    0.802     6.21
2026.39    0.809     6.71
2026.49    0.816     7.21
2026.59    0.823     7.69
2026.69    0.830     8.17
2026.79    0.837     8.64
2026.89    0.844     9.10
2026.99    0.850     9.56
2027.09    0.857    10.00
2027.19    0.863    10.45
2027.29    0.870    10.88
2027.39    0.876    11.31
2027.49    0.882    11.73
2027.59    0.888    12.15
2027.69    0.894    12.56
2027.79    0.899    12.97
2027.89    0.905    13.37
2027.99    0.910    13.76
2028.09    0.916    14.16
2028.19    0.921    14.54
2028.29    0.926    14.92
2028.39    0.931    15.30
2028.49    0.936    15.68
2028.59    0.941    16.05
2028.69    0.945    16.42
2028.79    0.950    16.78
2028.89    0.954    17.14
2028.99    0.959    17.50
2029.09    0.963    17.85
2029.19    0.967    18.20
2029.29    0.971    18.55
2029.39    0.975    18.89
2029.49    0.979    19.23
2029.59    0.982    19.57
2029.69    0.986    19.91
2029.79    0.989    20.25
2029.89    0.992    20.58
2029.99    0.995    20.91
2030.09    0.998    21.24
2030.19    1.001    21.56
2030.29    1.004    21.89
2030.39    1.007    22.21
2030.49    1.009    22.53
2030.59    1.012    22.85
2030.69    1.014    23.17
2030.79    1.017    23.49
2030.89    1.019    23.80
2030.99    1.021    24.12
2031.09    1.023    24.43
2031.19    1.024    24.74
2031.29    1.026    25.05
2031.39    1.028    25.36
2031.49    1.029    25.67
2031.59    1.031    25.98
2031.69    1.032    26.28
2031.79    1.033    26.59
2031.89    1.034    26.89
2031.99    1.035    27.20
2032.09    1.036    27.50
2032.19    1.037    27.81
2032.29    1.037    28.11
2032.39    1.038    28.41
2032.49    1.038    28.72
2032.59    1.039    29.02
2032.69    1.039    29.32
2032.79    1.039    29.62
2032.89    1.039    29.93
2032.99    1.039    30.23
2033.09    1.039    30.53
2033.19    1.039    30.83
2033.29    1.038    31.14
2033.39    1.038    31.44
2033.49    1.037    31.74
2033.59    1.037    32.05
2033.69    1.036    32.35
2033.79    1.035    32.65
2033.89    1.034    32.96
2033.99    1.033    33.26
2034.09    1.032    33.57
2034.19    1.031    33.88
2034.29    1.030    34.18
2034.39    1.028    34.49
2034.49    1.027    34.80
2034.59    1.025    35.11
2034.69    1.024    35.42
2034.79    1.022    35.74
2034.89    1.020    36.05
2034.99    1.018    36.36
2035.09    1.016    36.68
2035.19    1.014    36.99
2035.29    1.012    37.31
2035.39    1.010    37.63
2035.49    1.008    37.95
2035.59    1.005    38.28
2035.69    1.003    38.60
2035.79    1.000    38.92
2035.89    0.997    39.25
2035.99    0.995    39.58
2036.09    0.992    39.91
2036.19    0.989    40.24
2036.29    0.986    40.58
2036.39    0.983    40.92
2036.49    0.980    41.25
2036.59    0.977    41.60
2036.69    0.974    41.94
2036.79    0.970    42.28
2036.89    0.967    42.63
2036.99    0.964    42.98
2037.09    0.960    43.33
2037.19    0.956    43.69
2037.29    0.953    44.05
2037.39    0.949    44.41
2037.49    0.945    44.77
2037.59    0.941    45.14
2037.69    0.938    45.51
2037.79    0.934    45.88
2037.89    0.930    46.26
2037.99    0.925    46.64
2038.09    0.921    47.02
2038.19    0.917    47.41
2038.29    0.913    47.80
2038.39    0.909    48.19
2038.49    0.904    48.59
2038.59    0.900    48.99
2038.69    0.895    49.39
2038.79    0.891    49.80
2038.89    0.886    50.22
2038.99    0.881    50.64
2039.09    0.877    51.06
2039.19    0.872    51.48
2039.29    0.867    51.92
2039.39    0.862    52.35
2039.49    0.857    52.79
2039.59    0.853    53.24
2039.69    0.848    53.69
2039.79    0.843    54.15
2039.89    0.838    54.61
2039.99    0.832    55.08
2040.09    0.827    55.55
2040.19    0.822    56.03
2040.29    0.817    56.52
2040.39    0.812    57.01
2040.49    0.807    57.51
2040.59    0.801    58.02
2040.69    0.796    58.53
2040.79    0.791    59.05
2040.89    0.785    59.57
2040.99    0.780    60.10
2041.09    0.775    60.64
2041.19    0.769    61.19
2041.29    0.764    61.75
2041.39    0.758    62.31
2041.49    0.753    62.88
2041.59    0.747    63.46
2041.69    0.742    64.05
2041.79    0.736    64.65
2041.89    0.731    65.26
2041.99    0.725    65.87
2042.09    0.720    66.50
2042.19    0.714    67.13
2042.29    0.709    67.78
2042.39    0.704    68.43
2042.49    0.698    69.10
2042.59    0.693    69.77
2042.69    0.687    70.46
2042.79    0.682    71.15
2042.89    0.676    71.86
2042.99    0.671    72.58
2043.09    0.666    73.31
2043.19    0.660    74.05
2043.29    0.655    74.81
2043.39    0.650    75.58
2043.49    0.645    76.35
2043.59    0.639    77.15
2043.69    0.634    77.95
2043.79    0.629    78.77
2043.89    0.624    79.60
2043.99    0.619    80.45
2044.09    0.614    81.30
2044.19    0.609    82.18
2044.29    0.605    83.06
2044.39    0.600    83.96
2044.49    0.595    84.88
2044.59    0.591    85.81
2044.69    0.586    86.75
2044.79    0.582    87.71
2044.89    0.577    88.68
2044.99    0.573    89.67
2045.09    0.569    90.67
2045.19    0.565    91.68
2045.29    0.561    92.71
2045.39    0.557    93.76
2045.49    0.553    94.82
2045.59    0.550    95.89
2045.69    0.546    96.98
2045.79    0.543    98.08






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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 17:14:25



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