Double Star Calculator - Orbit

Orbital Elements for STF1523AB
WDS: STF1523AB WDS ID/Discoverer
P: 59.890 Orbital period (years)
a: 2.50442 Semi-major axis (arcseconds)
i: 122.187 Inclination (degrees)
Ω: 100.939 Longitude of ascending node (degrees)
T: 1935.170 Epoch of periastron passage (year)
e: 0.40432 Eccentricity
ω: 126.964 Longitude of periastron (degrees)
Start-Year: 1995.05485 Year
End-Year: 2054.94515 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1523AB
Position: 111810.90+313145.0 Epoch-2000 right ascension and declination
WDS-ID: 11182+3132 WDS designation
Discoverer Code: STF1523AB Discover designation and components
ADS number: 8119 Aitken Double Star catalog
HD number: 98231 HD catalog number
Hipparcos number: 55203 Hipparcos catalog number
V1: 4.33 Magnitude of the primary
V2: 4.80 Magnitude of the secondary
Equinox: Equinox
Date: 2015 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: Izm2019 Reference

Double Star Orbit for STF1523AB



WDS 6th Orbit including measures of STF1523AB

-- 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 STF1523AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.705   132.32
--------------------------
1995.05    1.098   316.31
1995.15    1.117   314.82
1995.25    1.136   313.37
1995.35    1.155   311.97
1995.45    1.174   310.61
1995.55    1.194   309.30
1995.65    1.213   308.04
1995.75    1.232   306.81
1995.85    1.251   305.62
1995.95    1.270   304.46
1996.05    1.289   303.34
1996.15    1.308   302.25
1996.25    1.327   301.19
1996.35    1.345   300.16
1996.45    1.363   299.16
1996.55    1.381   298.18
1996.65    1.398   297.23
1996.75    1.415   296.30
1996.85    1.432   295.40
1996.95    1.449   294.51
1997.05    1.465   293.65
1997.15    1.481   292.80
1997.25    1.497   291.97
1997.35    1.512   291.16
1997.45    1.526   290.37
1997.55    1.541   289.58
1997.65    1.555   288.82
1997.75    1.568   288.06
1997.85    1.582   287.32
1997.95    1.594   286.60
1998.05    1.607   285.88
1998.15    1.619   285.17
1998.25    1.631   284.48
1998.35    1.642   283.79
1998.45    1.653   283.11
1998.55    1.663   282.45
1998.65    1.673   281.79
1998.75    1.682   281.13
1998.85    1.692   280.49
1998.95    1.701   279.85
1999.05    1.709   279.22
1999.15    1.717   278.59
1999.25    1.725   277.97
1999.35    1.732   277.36
1999.45    1.739   276.75
1999.55    1.745   276.14
1999.65    1.752   275.54
1999.75    1.757   274.94
1999.85    1.763   274.35
1999.95    1.768   273.76
2000.05    1.773   273.17
2000.15    1.777   272.59
2000.25    1.781   272.01
2000.35    1.785   271.43
2000.45    1.789   270.86
2000.55    1.792   270.29
2000.65    1.795   269.71
2000.75    1.798   269.15
2000.85    1.800   268.58
2000.95    1.802   268.01
2001.05    1.804   267.45
2001.15    1.805   266.88
2001.25    1.807   266.32
2001.35    1.808   265.76
2001.45    1.809   265.20
2001.55    1.809   264.63
2001.65    1.809   264.07
2001.75    1.810   263.51
2001.85    1.809   262.95
2001.95    1.809   262.39
2002.05    1.809   261.83
2002.15    1.808   261.27
2002.25    1.807   260.70
2002.35    1.806   260.14
2002.45    1.805   259.58
2002.55    1.803   259.01
2002.65    1.802   258.45
2002.75    1.800   257.88
2002.85    1.798   257.31
2002.95    1.796   256.74
2003.05    1.794   256.17
2003.15    1.791   255.60
2003.25    1.789   255.03
2003.35    1.786   254.46
2003.45    1.784   253.88
2003.55    1.781   253.30
2003.65    1.778   252.72
2003.75    1.775   252.14
2003.85    1.772   251.55
2003.95    1.769   250.97
2004.05    1.766   250.38
2004.15    1.762   249.79
2004.25    1.759   249.20
2004.35    1.756   248.60
2004.45    1.752   248.01
2004.55    1.749   247.41
2004.65    1.745   246.80
2004.75    1.741   246.20
2004.85    1.738   245.59
2004.95    1.734   244.98
2005.05    1.730   244.37
2005.15    1.726   243.76
2005.25    1.723   243.14
2005.35    1.719   242.52
2005.45    1.715   241.89
2005.55    1.711   241.27
2005.65    1.707   240.64
2005.75    1.704   240.01
2005.85    1.700   239.37
2005.95    1.696   238.74
2006.05    1.692   238.10
2006.15    1.689   237.45
2006.25    1.685   236.81
2006.35    1.681   236.16
2006.45    1.678   235.51
2006.55    1.674   234.85
2006.65    1.670   234.20
2006.75    1.667   233.54
2006.85    1.663   232.88
2006.95    1.660   232.21
2007.05    1.657   231.54
2007.15    1.653   230.87
2007.25    1.650   230.20
2007.35    1.647   229.52
2007.45    1.644   228.84
2007.55    1.641   228.16
2007.65    1.638   227.48
2007.75    1.635   226.79
2007.85    1.632   226.11
2007.95    1.630   225.42
2008.05    1.627   224.72
2008.15    1.625   224.03
2008.25    1.622   223.33
2008.35    1.620   222.63
2008.45    1.618   221.93
2008.55    1.616   221.23
2008.65    1.614   220.52
2008.75    1.612   219.82
2008.85    1.610   219.11
2008.95    1.609   218.40
2009.05    1.607   217.69
2009.15    1.606   216.98
2009.25    1.604   216.27
2009.35    1.603   215.55
2009.45    1.602   214.84
2009.55    1.601   214.12
2009.65    1.601   213.40
2009.75    1.600   212.69
2009.85    1.600   211.97
2009.95    1.599   211.25
2010.05    1.599   210.53
2010.15    1.599   209.81
2010.25    1.599   209.10
2010.35    1.599   208.38
2010.45    1.599   207.66
2010.55    1.600   206.94
2010.65    1.600   206.22
2010.75    1.601   205.51
2010.85    1.602   204.79
2010.95    1.603   204.08
2011.05    1.604   203.36
2011.15    1.606   202.65
2011.25    1.607   201.94
2011.35    1.609   201.23
2011.45    1.610   200.52
2011.55    1.612   199.81
2011.65    1.614   199.10
2011.75    1.616   198.40
2011.85    1.619   197.70
2011.95    1.621   197.00
2012.05    1.624   196.30
2012.15    1.626   195.60
2012.25    1.629   194.91
2012.35    1.632   194.22
2012.45    1.635   193.53
2012.55    1.639   192.85
2012.65    1.642   192.16
2012.75    1.646   191.48
2012.85    1.649   190.81
2012.95    1.653   190.13
2013.05    1.657   189.46
2013.15    1.661   188.79
2013.25    1.665   188.13
2013.35    1.670   187.47
2013.45    1.674   186.81
2013.55    1.679   186.16
2013.65    1.683   185.51
2013.75    1.688   184.86
2013.85    1.693   184.22
2013.95    1.698   183.58
2014.05    1.703   182.95
2014.15    1.709   182.32
2014.25    1.714   181.69
2014.35    1.720   181.07
2014.45    1.725   180.45
2014.55    1.731   179.83
2014.65    1.737   179.22
2014.75    1.743   178.61
2014.85    1.749   178.01
2014.95    1.755   177.41
2015.05    1.761   176.82
2015.15    1.768   176.23
2015.25    1.774   175.64
2015.35    1.781   175.06
2015.45    1.787   174.48
2015.55    1.794   173.91
2015.65    1.801   173.34
2015.75    1.808   172.78
2015.85    1.815   172.22
2015.95    1.822   171.66
2016.05    1.829   171.11
2016.15    1.836   170.57
2016.25    1.844   170.02
2016.35    1.851   169.49
2016.45    1.859   168.95
2016.55    1.866   168.42
2016.65    1.874   167.90
2016.75    1.881   167.38
2016.85    1.889   166.86
2016.95    1.897   166.35
2017.05    1.905   165.84
2017.15    1.913   165.33
2017.25    1.921   164.83
2017.35    1.929   164.34
2017.45    1.937   163.85
2017.55    1.945   163.36
2017.65    1.953   162.88
2017.75    1.962   162.40
2017.85    1.970   161.92
2017.95    1.978   161.45
2018.05    1.987   160.98
2018.15    1.995   160.52
2018.25    2.004   160.06
2018.35    2.012   159.60
2018.45    2.021   159.15
2018.55    2.029   158.70
2018.65    2.038   158.26
2018.75    2.046   157.82
2018.85    2.055   157.38
2018.95    2.064   156.95
2019.05    2.073   156.52
2019.15    2.081   156.09
2019.25    2.090   155.67
2019.35    2.099   155.25
2019.45    2.108   154.84
2019.55    2.117   154.43
2019.65    2.125   154.02
2019.75    2.134   153.61
2019.85    2.143   153.21
2019.95    2.152   152.81
2020.05    2.161   152.42
2020.15    2.170   152.03
2020.25    2.179   151.64
2020.35    2.188   151.25
2020.45    2.197   150.87
2020.55    2.206   150.49
2020.65    2.215   150.12
2020.75    2.224   149.74
2020.85    2.233   149.37
2020.95    2.242   149.01
2021.05    2.251   148.64
2021.15    2.260   148.28
2021.25    2.269   147.92
2021.35    2.278   147.57
2021.45    2.286   147.21
2021.55    2.295   146.86
2021.65    2.304   146.52
2021.75    2.313   146.17
2021.85    2.322   145.83
2021.95    2.331   145.49
2022.05    2.340   145.15
2022.15    2.349   144.82
2022.25    2.358   144.49
2022.35    2.367   144.16
2022.45    2.375   143.83
2022.55    2.384   143.51
2022.65    2.393   143.19
2022.75    2.402   142.87
2022.85    2.410   142.55
2022.95    2.419   142.23
2023.05    2.428   141.92
2023.15    2.436   141.61
2023.25    2.445   141.30
2023.35    2.454   141.00
2023.45    2.462   140.69
2023.55    2.471   140.39
2023.65    2.479   140.09
2023.75    2.488   139.79
2023.85    2.496   139.50
2023.95    2.505   139.20
2024.05    2.513   138.91
2024.15    2.522   138.62
2024.25    2.530   138.33
2024.35    2.538   138.05
2024.45    2.546   137.76
2024.55    2.555   137.48
2024.65    2.563   137.20
2024.75    2.571   136.92
2024.85    2.579   136.64
2024.95    2.587   136.37
2025.05    2.595   136.10
2025.15    2.603   135.82
2025.25    2.611   135.55
2025.35    2.619   135.28
2025.45    2.626   135.02
2025.55    2.634   134.75
2025.65    2.642   134.49
2025.75    2.650   134.23
2025.85    2.657   133.96
2025.95    2.665   133.71
2026.05    2.672   133.45
2026.15    2.680   133.19
2026.25    2.687   132.94
2026.35    2.695   132.68
2026.45    2.702   132.43
2026.55    2.709   132.18
2026.65    2.716   131.93
2026.75    2.723   131.68
2026.85    2.730   131.43
2026.95    2.737   131.19
2027.05    2.744   130.94
2027.15    2.751   130.70
2027.25    2.758   130.46
2027.35    2.765   130.22
2027.45    2.772   129.98
2027.55    2.778   129.74
2027.65    2.785   129.50
2027.75    2.791   129.27
2027.85    2.798   129.03
2027.95    2.804   128.80
2028.05    2.810   128.56
2028.15    2.817   128.33
2028.25    2.823   128.10
2028.35    2.829   127.87
2028.45    2.835   127.64
2028.55    2.841   127.41
2028.65    2.847   127.19
2028.75    2.853   126.96
2028.85    2.858   126.73
2028.95    2.864   126.51
2029.05    2.870   126.29
2029.15    2.875   126.06
2029.25    2.881   125.84
2029.35    2.886   125.62
2029.45    2.891   125.40
2029.55    2.897   125.18
2029.65    2.902   124.96
2029.75    2.907   124.75
2029.85    2.912   124.53
2029.95    2.917   124.31
2030.05    2.921   124.10
2030.15    2.926   123.88
2030.25    2.931   123.67
2030.35    2.935   123.45
2030.45    2.940   123.24
2030.55    2.944   123.03
2030.65    2.949   122.82
2030.75    2.953   122.61
2030.85    2.957   122.40
2030.95    2.961   122.19
2031.05    2.965   121.98
2031.15    2.969   121.77
2031.25    2.973   121.56
2031.35    2.976   121.35
2031.45    2.980   121.15
2031.55    2.983   120.94
2031.65    2.987   120.73
2031.75    2.990   120.53
2031.85    2.993   120.32
2031.95    2.997   120.12
2032.05    3.000   119.91
2032.15    3.002   119.71
2032.25    3.005   119.51
2032.35    3.008   119.30
2032.45    3.011   119.10
2032.55    3.013   118.90
2032.65    3.016   118.69
2032.75    3.018   118.49
2032.85    3.020   118.29
2032.95    3.022   118.09
2033.05    3.024   117.89
2033.15    3.026   117.69
2033.25    3.028   117.49
2033.35    3.030   117.29
2033.45    3.032   117.09
2033.55    3.033   116.89
2033.65    3.034   116.69
2033.75    3.036   116.49
2033.85    3.037   116.29
2033.95    3.038   116.09
2034.05    3.039   115.89
2034.15    3.040   115.69
2034.25    3.041   115.49
2034.35    3.041   115.30
2034.45    3.042   115.10
2034.55    3.042   114.90
2034.65    3.042   114.70
2034.75    3.042   114.50
2034.85    3.043   114.30
2034.95    3.042   114.11
2035.05    3.042   113.91
2035.15    3.042   113.71
2035.25    3.042   113.51
2035.35    3.041   113.31
2035.45    3.040   113.11
2035.55    3.039   112.91
2035.65    3.039   112.71
2035.75    3.038   112.52
2035.85    3.036   112.32
2035.95    3.035   112.12
2036.05    3.034   111.92
2036.15    3.032   111.72
2036.25    3.030   111.52
2036.35    3.029   111.32
2036.45    3.027   111.12
2036.55    3.025   110.92
2036.65    3.022   110.72
2036.75    3.020   110.51
2036.85    3.018   110.31
2036.95    3.015   110.11
2037.05    3.012   109.91
2037.15    3.009   109.71
2037.25    3.006   109.50
2037.35    3.003   109.30
2037.45    3.000   109.10
2037.55    2.996   108.89
2037.65    2.993   108.69
2037.75    2.989   108.48
2037.85    2.985   108.28
2037.95    2.981   108.07
2038.05    2.977   107.86
2038.15    2.973   107.65
2038.25    2.968   107.45
2038.35    2.964   107.24
2038.45    2.959   107.03
2038.55    2.954   106.82
2038.65    2.949   106.61
2038.75    2.944   106.40
2038.85    2.939   106.18
2038.95    2.933   105.97
2039.05    2.927   105.76
2039.15    2.922   105.54
2039.25    2.916   105.33
2039.35    2.909   105.11
2039.45    2.903   104.89
2039.55    2.897   104.67
2039.65    2.890   104.45
2039.75    2.883   104.23
2039.85    2.876   104.01
2039.95    2.869   103.79
2040.05    2.862   103.57
2040.15    2.855   103.34
2040.25    2.847   103.12
2040.35    2.839   102.89
2040.45    2.831   102.66
2040.55    2.823   102.43
2040.65    2.815   102.20
2040.75    2.807   101.97
2040.85    2.798   101.73
2040.95    2.789   101.50
2041.05    2.780   101.26
2041.15    2.771   101.02
2041.25    2.762   100.78
2041.35    2.752   100.54
2041.45    2.743   100.30
2041.55    2.733   100.05
2041.65    2.723    99.80
2041.75    2.713    99.56
2041.85    2.702    99.31
2041.95    2.692    99.05
2042.05    2.681    98.80
2042.15    2.670    98.54
2042.25    2.659    98.28
2042.35    2.648    98.02
2042.45    2.636    97.76
2042.55    2.624    97.49
2042.65    2.612    97.23
2042.75    2.600    96.96
2042.85    2.588    96.68
2042.95    2.576    96.41
2043.05    2.563    96.13
2043.15    2.550    95.85
2043.25    2.537    95.56
2043.35    2.524    95.28
2043.45    2.510    94.99
2043.55    2.497    94.69
2043.65    2.483    94.40
2043.75    2.469    94.10
2043.85    2.455    93.79
2043.95    2.440    93.49
2044.05    2.425    93.18
2044.15    2.411    92.86
2044.25    2.396    92.55
2044.35    2.380    92.22
2044.45    2.365    91.90
2044.55    2.349    91.57
2044.65    2.333    91.23
2044.75    2.317    90.89
2044.85    2.301    90.55
2044.95    2.284    90.20
2045.05    2.268    89.84
2045.15    2.251    89.48
2045.25    2.234    89.12
2045.35    2.216    88.75
2045.45    2.199    88.37
2045.55    2.181    87.99
2045.65    2.163    87.60
2045.75    2.145    87.20
2045.85    2.127    86.80
2045.95    2.108    86.39
2046.05    2.089    85.97
2046.15    2.071    85.55
2046.25    2.051    85.11
2046.35    2.032    84.67
2046.45    2.012    84.23
2046.55    1.993    83.77
2046.65    1.973    83.30
2046.75    1.953    82.82
2046.85    1.932    82.34
2046.95    1.912    81.84
2047.05    1.891    81.33
2047.15    1.870    80.81
2047.25    1.849    80.28
2047.35    1.828    79.74
2047.45    1.807    79.18
2047.55    1.785    78.61
2047.65    1.764    78.03
2047.75    1.742    77.43
2047.85    1.720    76.82
2047.95    1.698    76.19
2048.05    1.675    75.54
2048.15    1.653    74.88
2048.25    1.630    74.20
2048.35    1.608    73.50
2048.45    1.585    72.78
2048.55    1.562    72.03
2048.65    1.539    71.27
2048.75    1.516    70.48
2048.85    1.493    69.67
2048.95    1.470    68.83
2049.05    1.447    67.97
2049.15    1.424    67.08
2049.25    1.401    66.16
2049.35    1.377    65.21
2049.45    1.354    64.22
2049.55    1.331    63.20
2049.65    1.308    62.15
2049.75    1.285    61.05
2049.85    1.263    59.92
2049.95    1.240    58.75
2050.05    1.218    57.53
2050.15    1.195    56.27
2050.25    1.173    54.96
2050.35    1.152    53.60
2050.45    1.130    52.19
2050.55    1.109    50.73
2050.65    1.089    49.21
2050.75    1.068    47.63
2050.85    1.049    45.99
2050.95    1.030    44.29
2051.05    1.011    42.52
2051.15    0.993    40.69
2051.25    0.976    38.80
2051.35    0.959    36.83
2051.45    0.944    34.80
2051.55    0.929    32.71
2051.65    0.915    30.55
2051.75    0.902    28.32
2051.85    0.890    26.03
2051.95    0.879    23.69
2052.05    0.870    21.29
2052.15    0.861    18.83
2052.25    0.854    16.34
2052.35    0.848    13.80
2052.45    0.844    11.24
2052.55    0.841     8.65
2052.65    0.839     6.04
2052.75    0.838     3.43
2052.85    0.839     0.82
2052.95    0.842   358.22
2053.05    0.845   355.63
2053.15    0.850   353.08
2053.25    0.856   350.55
2053.35    0.864   348.07
2053.45    0.872   345.63
2053.55    0.882   343.24
2053.65    0.893   340.90
2053.75    0.904   338.63
2053.85    0.917   336.41
2053.95    0.931   334.26
2054.05    0.945   332.17
2054.15    0.960   330.14
2054.25    0.976   328.18
2054.35    0.992   326.29
2054.45    1.009   324.45
2054.55    1.027   322.68
2054.65    1.044   320.97
2054.75    1.063   319.31
2054.85    1.081   317.71






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 16:36:39



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