Double Star Calculator - Orbit

Orbital Elements for MEL9BC
WDS: MEL9BC WDS ID/Discoverer
P: 35.230 Orbital period (years)
a: 0.446 Semi-major axis (arcseconds)
i: 82.9 Inclination (degrees)
Ω: 9.3 Longitude of ascending node (degrees)
T: 2009.660 Epoch of periastron passage (year)
e: 0.082 Eccentricity
ω: 126.4 Longitude of periastron (degrees)
Start-Year: 2007.385 Year
End-Year: 2042.615 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for MEL9BC
Position: 233500.27+013619.4 Epoch-2000 right ascension and declination
WDS-ID: 23350+0136 WDS designation
Discoverer Code: MEL9BC Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 116384 Hipparcos catalog number
V1: 12.0 Magnitude of the primary
V2: 13.2 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Tok2024c Reference

Double Star Orbit for MEL9BC



WDS 6th Orbit including measures of MEL9BC

-- 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 MEL9BC
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.244   357.05
--------------------------
2007.38    0.082   151.53
2007.48    0.089   154.95
2007.58    0.096   157.89
2007.68    0.103   160.43
2007.78    0.110   162.64
2007.88    0.117   164.57
2007.98    0.125   166.28
2008.08    0.132   167.80
2008.18    0.140   169.15
2008.28    0.147   170.37
2008.38    0.155   171.47
2008.48    0.162   172.47
2008.58    0.170   173.38
2008.68    0.177   174.21
2008.78    0.184   174.98
2008.88    0.192   175.69
2008.98    0.199   176.34
2009.08    0.206   176.95
2009.18    0.213   177.52
2009.28    0.220   178.06
2009.38    0.227   178.55
2009.48    0.234   179.02
2009.58    0.241   179.47
2009.68    0.248   179.89
2009.78    0.255   180.28
2009.88    0.261   180.66
2009.98    0.268   181.02
2010.08    0.274   181.36
2010.18    0.280   181.68
2010.28    0.287   181.99
2010.38    0.293   182.29
2010.48    0.299   182.58
2010.58    0.305   182.85
2010.68    0.310   183.12
2010.78    0.316   183.37
2010.88    0.321   183.62
2010.98    0.327   183.86
2011.08    0.332   184.09
2011.18    0.337   184.31
2011.28    0.342   184.53
2011.38    0.347   184.74
2011.48    0.352   184.95
2011.58    0.356   185.15
2011.68    0.361   185.34
2011.78    0.365   185.53
2011.88    0.369   185.72
2011.98    0.373   185.90
2012.08    0.377   186.08
2012.18    0.381   186.25
2012.28    0.384   186.42
2012.38    0.387   186.59
2012.48    0.391   186.76
2012.58    0.394   186.92
2012.68    0.397   187.08
2012.78    0.400   187.24
2012.88    0.402   187.39
2012.98    0.405   187.55
2013.08    0.407   187.70
2013.18    0.409   187.85
2013.28    0.411   188.00
2013.38    0.413   188.15
2013.48    0.415   188.29
2013.58    0.416   188.44
2013.68    0.418   188.58
2013.78    0.419   188.73
2013.88    0.420   188.87
2013.98    0.421   189.01
2014.08    0.422   189.15
2014.18    0.422   189.29
2014.28    0.423   189.43
2014.38    0.423   189.57
2014.48    0.423   189.71
2014.58    0.423   189.85
2014.68    0.423   189.99
2014.78    0.423   190.13
2014.88    0.422   190.27
2014.98    0.422   190.41
2015.08    0.421   190.55
2015.18    0.420   190.69
2015.28    0.419   190.84
2015.38    0.418   190.98
2015.48    0.416   191.12
2015.58    0.415   191.27
2015.68    0.413   191.41
2015.78    0.412   191.56
2015.88    0.410   191.71
2015.98    0.408   191.86
2016.08    0.405   192.01
2016.18    0.403   192.16
2016.28    0.400   192.32
2016.38    0.398   192.48
2016.48    0.395   192.64
2016.58    0.392   192.80
2016.68    0.389   192.96
2016.78    0.386   193.13
2016.88    0.383   193.30
2016.98    0.379   193.47
2017.08    0.376   193.64
2017.18    0.372   193.82
2017.28    0.369   194.01
2017.38    0.365   194.19
2017.48    0.361   194.38
2017.58    0.357   194.58
2017.68    0.352   194.78
2017.78    0.348   194.98
2017.88    0.344   195.19
2017.98    0.339   195.41
2018.08    0.334   195.63
2018.18    0.330   195.85
2018.28    0.325   196.09
2018.38    0.320   196.33
2018.48    0.315   196.58
2018.58    0.310   196.83
2018.68    0.305   197.10
2018.78    0.299   197.37
2018.88    0.294   197.66
2018.98    0.288   197.95
2019.08    0.283   198.26
2019.18    0.277   198.58
2019.28    0.272   198.91
2019.38    0.266   199.26
2019.48    0.260   199.62
2019.58    0.254   200.00
2019.68    0.248   200.40
2019.78    0.242   200.81
2019.88    0.236   201.25
2019.98    0.230   201.71
2020.08    0.224   202.20
2020.18    0.217   202.72
2020.28    0.211   203.26
2020.38    0.205   203.84
2020.48    0.198   204.46
2020.58    0.192   205.11
2020.68    0.186   205.82
2020.78    0.179   206.57
2020.88    0.173   207.38
2020.98    0.166   208.25
2021.08    0.160   209.19
2021.18    0.153   210.22
2021.28    0.147   211.33
2021.38    0.140   212.54
2021.48    0.134   213.88
2021.58    0.128   215.34
2021.68    0.121   216.96
2021.78    0.115   218.76
2021.88    0.109   220.76
2021.98    0.103   223.00
2022.08    0.097   225.51
2022.18    0.091   228.35
2022.28    0.086   231.55
2022.38    0.081   235.18
2022.48    0.076   239.29
2022.58    0.071   243.93
2022.68    0.067   249.16
2022.78    0.064   254.97
2022.88    0.061   261.35
2022.98    0.060   268.20
2023.08    0.059   275.36
2023.18    0.059   282.64
2023.28    0.060   289.80
2023.38    0.061   296.64
2023.48    0.064   303.00
2023.58    0.067   308.80
2023.68    0.071   314.01
2023.78    0.076   318.65
2023.88    0.081   322.75
2023.98    0.086   326.37
2024.08    0.091   329.56
2024.18    0.097   332.39
2024.28    0.103   334.89
2024.38    0.109   337.13
2024.48    0.115   339.12
2024.58    0.121   340.91
2024.68    0.128   342.53
2024.78    0.134   343.99
2024.88    0.141   345.32
2024.98    0.147   346.53
2025.08    0.154   347.64
2025.18    0.160   348.66
2025.28    0.167   349.60
2025.38    0.173   350.47
2025.48    0.180   351.27
2025.58    0.186   352.02
2025.68    0.193   352.72
2025.78    0.199   353.37
2025.88    0.205   353.99
2025.98    0.212   354.56
2026.08    0.218   355.10
2026.18    0.225   355.61
2026.28    0.231   356.10
2026.38    0.237   356.55
2026.48    0.243   356.99
2026.58    0.249   357.40
2026.68    0.256   357.79
2026.78    0.262   358.17
2026.88    0.268   358.53
2026.98    0.273   358.87
2027.08    0.279   359.20
2027.18    0.285   359.51
2027.28    0.291   359.81
2027.38    0.297     0.10
2027.48    0.302     0.38
2027.58    0.308     0.65
2027.68    0.313     0.91
2027.78    0.319     1.16
2027.88    0.324     1.40
2027.98    0.329     1.64
2028.08    0.334     1.87
2028.18    0.340     2.09
2028.28    0.345     2.30
2028.38    0.350     2.51
2028.48    0.354     2.71
2028.58    0.359     2.91
2028.68    0.364     3.10
2028.78    0.368     3.29
2028.88    0.373     3.47
2028.98    0.377     3.65
2029.08    0.382     3.82
2029.18    0.386     3.99
2029.28    0.390     4.16
2029.38    0.394     4.32
2029.48    0.398     4.48
2029.58    0.402     4.64
2029.68    0.406     4.79
2029.78    0.409     4.94
2029.88    0.413     5.09
2029.98    0.416     5.23
2030.08    0.420     5.38
2030.18    0.423     5.52
2030.28    0.426     5.66
2030.38    0.429     5.79
2030.48    0.432     5.93
2030.58    0.435     6.06
2030.68    0.437     6.19
2030.78    0.440     6.32
2030.88    0.442     6.45
2030.98    0.445     6.58
2031.08    0.447     6.71
2031.18    0.449     6.83
2031.28    0.451     6.95
2031.38    0.453     7.08
2031.48    0.455     7.20
2031.58    0.456     7.32
2031.68    0.458     7.44
2031.78    0.459     7.56
2031.88    0.461     7.68
2031.98    0.462     7.79
2032.08    0.463     7.91
2032.18    0.464     8.03
2032.28    0.465     8.14
2032.38    0.465     8.26
2032.48    0.466     8.38
2032.58    0.466     8.49
2032.68    0.467     8.61
2032.78    0.467     8.72
2032.88    0.467     8.84
2032.98    0.467     8.95
2033.08    0.466     9.07
2033.18    0.466     9.18
2033.28    0.466     9.30
2033.38    0.465     9.41
2033.48    0.464     9.53
2033.58    0.464     9.64
2033.68    0.463     9.76
2033.78    0.461     9.88
2033.88    0.460    10.00
2033.98    0.459    10.12
2034.08    0.457    10.23
2034.18    0.456    10.35
2034.28    0.454    10.48
2034.38    0.452    10.60
2034.48    0.450    10.72
2034.58    0.448    10.84
2034.68    0.446    10.97
2034.78    0.443    11.10
2034.88    0.441    11.22
2034.98    0.438    11.35
2035.08    0.435    11.49
2035.18    0.432    11.62
2035.28    0.429    11.75
2035.38    0.426    11.89
2035.48    0.423    12.03
2035.58    0.420    12.17
2035.68    0.416    12.31
2035.78    0.412    12.46
2035.88    0.409    12.61
2035.98    0.405    12.76
2036.08    0.401    12.91
2036.18    0.396    13.07
2036.28    0.392    13.23
2036.38    0.388    13.40
2036.48    0.383    13.57
2036.58    0.379    13.74
2036.68    0.374    13.92
2036.78    0.369    14.10
2036.88    0.364    14.28
2036.98    0.359    14.48
2037.08    0.354    14.67
2037.18    0.348    14.88
2037.28    0.343    15.09
2037.38    0.337    15.30
2037.48    0.332    15.53
2037.58    0.326    15.76
2037.68    0.320    16.00
2037.78    0.314    16.25
2037.88    0.308    16.50
2037.98    0.302    16.77
2038.08    0.296    17.05
2038.18    0.289    17.35
2038.28    0.283    17.65
2038.38    0.276    17.97
2038.48    0.270    18.31
2038.58    0.263    18.66
2038.68    0.256    19.03
2038.78    0.249    19.42
2038.88    0.243    19.84
2038.98    0.236    20.28
2039.08    0.229    20.74
2039.18    0.221    21.24
2039.28    0.214    21.76
2039.38    0.207    22.33
2039.48    0.200    22.94
2039.58    0.192    23.59
2039.68    0.185    24.29
2039.78    0.177    25.06
2039.88    0.170    25.89
2039.98    0.162    26.79
2040.08    0.155    27.79
2040.18    0.147    28.88
2040.28    0.140    30.09
2040.38    0.132    31.44
2040.48    0.125    32.96
2040.58    0.118    34.66
2040.68    0.110    36.59
2040.78    0.103    38.79
2040.88    0.096    41.32
2040.98    0.089    44.25
2041.08    0.082    47.66
2041.18    0.076    51.66
2041.28    0.070    56.36
2041.38    0.065    61.89
2041.48    0.060    68.36
2041.58    0.056    75.84
2041.68    0.053    84.26
2041.78    0.052    93.40
2041.88    0.051   102.86
2041.98    0.053   112.15
2042.08    0.055   120.84
2042.18    0.059   128.62
2042.28    0.063   135.41
2042.38    0.068   141.23
2042.48    0.074   146.19
2042.58    0.080   150.39






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 18:51:57



www.stella-vega.de