Double Star Calculator - Orbit

Orbital Elements for STT298AB
WDS: STT298AB WDS ID/Discoverer
P: 55.452 Orbital period (years)
a: 0.78322 Semi-major axis (arcseconds)
i: 63.51 Inclination (degrees)
Ω: 0.352 Longitude of ascending node (degrees)
T: 1938.495 Epoch of periastron passage (year)
e: 0.5844 Eccentricity
ω: 23.236 Longitude of periastron (degrees)
Start-Year: 1997.274 Year
End-Year: 2052.726 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT298AB
Position: 153602.22+394808.9 Epoch-2000 right ascension and declination
WDS-ID: 15360+3948 WDS designation
Discoverer Code: STT298AB Discover designation and components
ADS number: 9716 Aitken Double Star catalog
HD number: 139341 HD catalog number
Hipparcos number: 76382 Hipparcos catalog number
V1: 7.16 Magnitude of the primary
V2: 8.44 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 STT298AB



WDS 6th Orbit including measures of STT298AB

-- 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 STT298AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.055   196.81
--------------------------
1997.27    0.223   115.48
1997.37    0.230   118.29
1997.47    0.238   120.92
1997.57    0.246   123.39
1997.67    0.254   125.69
1997.77    0.263   127.85
1997.87    0.271   129.87
1997.97    0.280   131.77
1998.07    0.290   133.54
1998.17    0.299   135.21
1998.27    0.308   136.78
1998.37    0.317   138.25
1998.47    0.327   139.64
1998.57    0.337   140.95
1998.67    0.346   142.19
1998.77    0.356   143.36
1998.87    0.365   144.47
1998.97    0.375   145.52
1999.07    0.385   146.52
1999.17    0.394   147.47
1999.27    0.404   148.38
1999.37    0.413   149.24
1999.47    0.423   150.06
1999.57    0.432   150.85
1999.67    0.442   151.61
1999.77    0.451   152.33
1999.87    0.461   153.02
1999.97    0.470   153.69
2000.07    0.479   154.33
2000.17    0.488   154.95
2000.27    0.497   155.54
2000.37    0.507   156.11
2000.47    0.516   156.66
2000.57    0.524   157.20
2000.67    0.533   157.71
2000.77    0.542   158.21
2000.87    0.551   158.69
2000.97    0.560   159.16
2001.07    0.568   159.61
2001.17    0.577   160.05
2001.27    0.585   160.48
2001.37    0.594   160.90
2001.47    0.602   161.30
2001.57    0.610   161.69
2001.67    0.619   162.07
2001.77    0.627   162.44
2001.87    0.635   162.81
2001.97    0.643   163.16
2002.07    0.651   163.51
2002.17    0.658   163.84
2002.27    0.666   164.17
2002.37    0.674   164.49
2002.47    0.682   164.81
2002.57    0.689   165.11
2002.67    0.697   165.41
2002.77    0.704   165.71
2002.87    0.711   165.99
2002.97    0.719   166.28
2003.07    0.726   166.55
2003.17    0.733   166.82
2003.27    0.740   167.09
2003.37    0.747   167.35
2003.47    0.754   167.60
2003.57    0.761   167.86
2003.67    0.768   168.10
2003.77    0.774   168.35
2003.87    0.781   168.58
2003.97    0.788   168.82
2004.07    0.794   169.05
2004.17    0.801   169.27
2004.27    0.807   169.50
2004.37    0.813   169.72
2004.47    0.820   169.93
2004.57    0.826   170.15
2004.67    0.832   170.36
2004.77    0.838   170.56
2004.87    0.844   170.77
2004.97    0.850   170.97
2005.07    0.856   171.17
2005.17    0.862   171.36
2005.27    0.868   171.55
2005.37    0.873   171.74
2005.47    0.879   171.93
2005.57    0.885   172.12
2005.67    0.890   172.30
2005.77    0.895   172.48
2005.87    0.901   172.66
2005.97    0.906   172.84
2006.07    0.912   173.01
2006.17    0.917   173.18
2006.27    0.922   173.35
2006.37    0.927   173.52
2006.47    0.932   173.69
2006.57    0.937   173.85
2006.67    0.942   174.02
2006.77    0.947   174.18
2006.87    0.952   174.34
2006.97    0.956   174.50
2007.07    0.961   174.65
2007.17    0.966   174.81
2007.27    0.970   174.96
2007.37    0.975   175.12
2007.47    0.979   175.27
2007.57    0.984   175.42
2007.67    0.988   175.56
2007.77    0.992   175.71
2007.87    0.997   175.86
2007.97    1.001   176.00
2008.07    1.005   176.15
2008.17    1.009   176.29
2008.27    1.013   176.43
2008.37    1.017   176.57
2008.47    1.021   176.71
2008.57    1.025   176.84
2008.67    1.029   176.98
2008.77    1.033   177.12
2008.87    1.036   177.25
2008.97    1.040   177.39
2009.07    1.044   177.52
2009.17    1.047   177.65
2009.27    1.051   177.78
2009.37    1.054   177.91
2009.47    1.058   178.04
2009.57    1.061   178.17
2009.67    1.065   178.30
2009.77    1.068   178.42
2009.87    1.071   178.55
2009.97    1.074   178.67
2010.07    1.077   178.80
2010.17    1.080   178.92
2010.27    1.084   179.05
2010.37    1.087   179.17
2010.47    1.090   179.29
2010.57    1.092   179.41
2010.67    1.095   179.53
2010.77    1.098   179.65
2010.87    1.101   179.77
2010.97    1.104   179.89
2011.07    1.106   180.01
2011.17    1.109   180.13
2011.27    1.111   180.24
2011.37    1.114   180.36
2011.47    1.117   180.47
2011.57    1.119   180.59
2011.67    1.121   180.70
2011.77    1.124   180.82
2011.87    1.126   180.93
2011.97    1.128   181.05
2012.07    1.131   181.16
2012.17    1.133   181.27
2012.27    1.135   181.38
2012.37    1.137   181.50
2012.47    1.139   181.61
2012.57    1.141   181.72
2012.67    1.143   181.83
2012.77    1.145   181.94
2012.87    1.147   182.05
2012.97    1.149   182.16
2013.07    1.150   182.27
2013.17    1.152   182.38
2013.27    1.154   182.48
2013.37    1.156   182.59
2013.47    1.157   182.70
2013.57    1.159   182.81
2013.67    1.160   182.91
2013.77    1.162   183.02
2013.87    1.163   183.13
2013.97    1.165   183.23
2014.07    1.166   183.34
2014.17    1.168   183.45
2014.27    1.169   183.55
2014.37    1.170   183.66
2014.47    1.171   183.76
2014.57    1.172   183.87
2014.67    1.174   183.97
2014.77    1.175   184.08
2014.87    1.176   184.18
2014.97    1.177   184.29
2015.07    1.178   184.39
2015.17    1.179   184.49
2015.27    1.180   184.60
2015.37    1.181   184.70
2015.47    1.181   184.80
2015.57    1.182   184.91
2015.67    1.183   185.01
2015.77    1.184   185.11
2015.87    1.184   185.22
2015.97    1.185   185.32
2016.07    1.186   185.42
2016.17    1.186   185.52
2016.27    1.187   185.63
2016.37    1.187   185.73
2016.47    1.188   185.83
2016.57    1.188   185.93
2016.67    1.188   186.03
2016.77    1.189   186.14
2016.87    1.189   186.24
2016.97    1.189   186.34
2017.07    1.189   186.44
2017.17    1.190   186.54
2017.27    1.190   186.65
2017.37    1.190   186.75
2017.47    1.190   186.85
2017.57    1.190   186.95
2017.67    1.190   187.05
2017.77    1.190   187.16
2017.87    1.190   187.26
2017.97    1.190   187.36
2018.07    1.190   187.46
2018.17    1.189   187.56
2018.27    1.189   187.66
2018.37    1.189   187.77
2018.47    1.189   187.87
2018.57    1.188   187.97
2018.67    1.188   188.07
2018.77    1.188   188.18
2018.87    1.187   188.28
2018.97    1.187   188.38
2019.07    1.186   188.48
2019.17    1.186   188.58
2019.27    1.185   188.69
2019.37    1.184   188.79
2019.47    1.184   188.89
2019.57    1.183   189.00
2019.67    1.182   189.10
2019.77    1.182   189.20
2019.87    1.181   189.31
2019.97    1.180   189.41
2020.07    1.179   189.51
2020.17    1.178   189.62
2020.27    1.177   189.72
2020.37    1.176   189.82
2020.47    1.175   189.93
2020.57    1.174   190.03
2020.67    1.173   190.14
2020.77    1.172   190.24
2020.87    1.171   190.35
2020.97    1.170   190.45
2021.07    1.169   190.56
2021.17    1.168   190.66
2021.27    1.166   190.77
2021.37    1.165   190.87
2021.47    1.164   190.98
2021.57    1.162   191.09
2021.67    1.161   191.19
2021.77    1.160   191.30
2021.87    1.158   191.41
2021.97    1.157   191.52
2022.07    1.155   191.62
2022.17    1.154   191.73
2022.27    1.152   191.84
2022.37    1.150   191.95
2022.47    1.149   192.06
2022.57    1.147   192.17
2022.67    1.145   192.28
2022.77    1.143   192.39
2022.87    1.142   192.50
2022.97    1.140   192.61
2023.07    1.138   192.72
2023.17    1.136   192.83
2023.27    1.134   192.94
2023.37    1.132   193.06
2023.47    1.130   193.17
2023.57    1.128   193.28
2023.67    1.126   193.40
2023.77    1.124   193.51
2023.87    1.122   193.62
2023.97    1.120   193.74
2024.07    1.118   193.85
2024.17    1.115   193.97
2024.27    1.113   194.09
2024.37    1.111   194.20
2024.47    1.109   194.32
2024.57    1.106   194.44
2024.67    1.104   194.55
2024.77    1.101   194.67
2024.87    1.099   194.79
2024.97    1.097   194.91
2025.07    1.094   195.03
2025.17    1.092   195.15
2025.27    1.089   195.27
2025.37    1.086   195.40
2025.47    1.084   195.52
2025.57    1.081   195.64
2025.67    1.078   195.76
2025.77    1.076   195.89
2025.87    1.073   196.01
2025.97    1.070   196.14
2026.07    1.067   196.27
2026.17    1.064   196.39
2026.27    1.062   196.52
2026.37    1.059   196.65
2026.47    1.056   196.78
2026.57    1.053   196.91
2026.67    1.050   197.04
2026.77    1.047   197.17
2026.87    1.044   197.30
2026.97    1.041   197.43
2027.07    1.037   197.57
2027.17    1.034   197.70
2027.27    1.031   197.84
2027.37    1.028   197.97
2027.47    1.025   198.11
2027.57    1.021   198.25
2027.67    1.018   198.39
2027.77    1.015   198.53
2027.87    1.011   198.67
2027.97    1.008   198.81
2028.07    1.005   198.95
2028.17    1.001   199.09
2028.27    0.998   199.24
2028.37    0.994   199.38
2028.47    0.990   199.53
2028.57    0.987   199.68
2028.67    0.983   199.82
2028.77    0.980   199.97
2028.87    0.976   200.13
2028.97    0.972   200.28
2029.07    0.969   200.43
2029.17    0.965   200.58
2029.27    0.961   200.74
2029.37    0.957   200.90
2029.47    0.953   201.05
2029.57    0.949   201.21
2029.67    0.946   201.37
2029.77    0.942   201.54
2029.87    0.938   201.70
2029.97    0.934   201.86
2030.07    0.930   202.03
2030.17    0.926   202.20
2030.27    0.921   202.37
2030.37    0.917   202.54
2030.47    0.913   202.71
2030.57    0.909   202.88
2030.67    0.905   203.06
2030.77    0.901   203.24
2030.87    0.896   203.41
2030.97    0.892   203.59
2031.07    0.888   203.78
2031.17    0.883   203.96
2031.27    0.879   204.15
2031.37    0.875   204.33
2031.47    0.870   204.52
2031.57    0.866   204.71
2031.67    0.861   204.91
2031.77    0.857   205.10
2031.87    0.852   205.30
2031.97    0.848   205.50
2032.07    0.843   205.70
2032.17    0.838   205.91
2032.27    0.834   206.11
2032.37    0.829   206.32
2032.47    0.824   206.53
2032.57    0.820   206.74
2032.67    0.815   206.96
2032.77    0.810   207.18
2032.87    0.805   207.40
2032.97    0.800   207.62
2033.07    0.796   207.85
2033.17    0.791   208.08
2033.27    0.786   208.31
2033.37    0.781   208.54
2033.47    0.776   208.78
2033.57    0.771   209.02
2033.67    0.766   209.27
2033.77    0.761   209.52
2033.87    0.756   209.77
2033.97    0.751   210.02
2034.07    0.746   210.28
2034.17    0.741   210.54
2034.27    0.735   210.80
2034.37    0.730   211.07
2034.47    0.725   211.34
2034.57    0.720   211.62
2034.67    0.714   211.90
2034.77    0.709   212.18
2034.87    0.704   212.47
2034.97    0.699   212.77
2035.07    0.693   213.06
2035.17    0.688   213.37
2035.27    0.683   213.67
2035.37    0.677   213.99
2035.47    0.672   214.30
2035.57    0.666   214.62
2035.67    0.661   214.95
2035.77    0.655   215.28
2035.87    0.650   215.62
2035.97    0.644   215.97
2036.07    0.639   216.32
2036.17    0.633   216.67
2036.27    0.628   217.04
2036.37    0.622   217.41
2036.47    0.617   217.78
2036.57    0.611   218.16
2036.67    0.605   218.55
2036.77    0.600   218.95
2036.87    0.594   219.36
2036.97    0.588   219.77
2037.07    0.583   220.19
2037.17    0.577   220.62
2037.27    0.571   221.06
2037.37    0.566   221.50
2037.47    0.560   221.96
2037.57    0.554   222.42
2037.67    0.548   222.90
2037.77    0.543   223.38
2037.87    0.537   223.87
2037.97    0.531   224.38
2038.07    0.526   224.90
2038.17    0.520   225.42
2038.27    0.514   225.96
2038.37    0.508   226.51
2038.47    0.503   227.08
2038.57    0.497   227.65
2038.67    0.491   228.25
2038.77    0.486   228.85
2038.87    0.480   229.47
2038.97    0.474   230.10
2039.07    0.469   230.75
2039.17    0.463   231.41
2039.27    0.457   232.10
2039.37    0.452   232.79
2039.47    0.446   233.51
2039.57    0.441   234.24
2039.67    0.435   234.99
2039.77    0.430   235.77
2039.87    0.424   236.56
2039.97    0.419   237.37
2040.07    0.413   238.20
2040.17    0.408   239.06
2040.27    0.403   239.94
2040.37    0.397   240.84
2040.47    0.392   241.76
2040.57    0.387   242.71
2040.67    0.382   243.69
2040.77    0.377   244.69
2040.87    0.372   245.71
2040.97    0.367   246.77
2041.07    0.362   247.85
2041.17    0.358   248.97
2041.27    0.353   250.11
2041.37    0.348   251.28
2041.47    0.344   252.48
2041.57    0.340   253.72
2041.67    0.336   254.98
2041.77    0.331   256.28
2041.87    0.327   257.61
2041.97    0.324   258.97
2042.07    0.320   260.36
2042.17    0.316   261.78
2042.27    0.313   263.24
2042.37    0.310   264.73
2042.47    0.306   266.25
2042.57    0.303   267.80
2042.67    0.301   269.38
2042.77    0.298   270.99
2042.87    0.295   272.63
2042.97    0.293   274.29
2043.07    0.291   275.98
2043.17    0.289   277.69
2043.27    0.288   279.43
2043.37    0.286   281.18
2043.47    0.285   282.95
2043.57    0.284   284.74
2043.67    0.283   286.54
2043.77    0.282   288.34
2043.87    0.282   290.16
2043.97    0.281   291.98
2044.07    0.281   293.80
2044.17    0.281   295.63
2044.27    0.282   297.45
2044.37    0.282   299.26
2044.47    0.283   301.07
2044.57    0.284   302.87
2044.67    0.285   304.65
2044.77    0.286   306.42
2044.87    0.287   308.18
2044.97    0.289   309.92
2045.07    0.291   311.63
2045.17    0.292   313.33
2045.27    0.294   315.01
2045.37    0.296   316.66
2045.47    0.298   318.29
2045.57    0.301   319.90
2045.67    0.303   321.48
2045.77    0.305   323.03
2045.87    0.308   324.57
2045.97    0.310   326.08
2046.07    0.313   327.56
2046.17    0.315   329.02
2046.27    0.318   330.46
2046.37    0.320   331.87
2046.47    0.323   333.27
2046.57    0.325   334.64
2046.67    0.328   335.99
2046.77    0.330   337.32
2046.87    0.332   338.64
2046.97    0.334   339.94
2047.07    0.336   341.22
2047.17    0.338   342.49
2047.27    0.339   343.75
2047.37    0.341   345.00
2047.47    0.342   346.23
2047.57    0.343   347.46
2047.67    0.344   348.68
2047.77    0.344   349.90
2047.87    0.344   351.12
2047.97    0.344   352.33
2048.07    0.344   353.55
2048.17    0.343   354.77
2048.27    0.342   356.00
2048.37    0.341   357.24
2048.47    0.339   358.49
2048.57    0.337   359.75
2048.67    0.334     1.03
2048.77    0.331     2.33
2048.87    0.328     3.66
2048.97    0.324     5.02
2049.07    0.320     6.40
2049.17    0.316     7.83
2049.27    0.311     9.30
2049.37    0.306    10.81
2049.47    0.300    12.38
2049.57    0.295    14.01
2049.67    0.289    15.70
2049.77    0.282    17.47
2049.87    0.276    19.32
2049.97    0.269    21.26
2050.07    0.262    23.31
2050.17    0.255    25.46
2050.27    0.249    27.73
2050.37    0.242    30.13
2050.47    0.235    32.67
2050.57    0.228    35.36
2050.67    0.222    38.21
2050.77    0.215    41.24
2050.87    0.209    44.43
2050.97    0.204    47.81
2051.07    0.199    51.36
2051.17    0.195    55.09
2051.27    0.191    58.98
2051.37    0.188    63.01
2051.47    0.185    67.16
2051.57    0.184    71.40
2051.67    0.183    75.70
2051.77    0.183    80.01
2051.87    0.184    84.29
2051.97    0.186    88.51
2052.07    0.189    92.63
2052.17    0.192    96.61
2052.27    0.196   100.44
2052.37    0.201   104.10
2052.47    0.207   107.57
2052.57    0.213   110.85
2052.67    0.219   113.95






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 17:17:24



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