Double Star Calculator - Orbit

Orbital Elements for HEI7
WDS: HEI7 WDS ID/Discoverer
P: 30.640 Orbital period (years)
a: 0.469 Semi-major axis (arcseconds)
i: 34.4 Inclination (degrees)
Ω: 26.4 Longitude of ascending node (degrees)
T: 1996.750 Epoch of periastron passage (year)
e: 0.629 Eccentricity
ω: 46.9 Longitude of periastron (degrees)
Start-Year: 2009.68 Year
End-Year: 2040.32 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for HEI7
Position: 203721.54+753601.5 Epoch-2000 right ascension and declination
WDS-ID: 20374+7536 WDS designation
Discoverer Code: HEI7 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 197433 HD catalog number
Hipparcos number: 101750 Hipparcos catalog number
V1: 7.68 Magnitude of the primary
V2: 10.48 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2007 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Doc2013k Reference

Double Star Orbit for HEI7



WDS 6th Orbit including measures of HEI7

-- 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 HEI7
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.205    21.63
--------------------------
2009.68    0.702   239.75
2009.78    0.703   240.09
2009.88    0.703   240.42
2009.98    0.703   240.76
2010.08    0.703   241.09
2010.18    0.703   241.43
2010.28    0.703   241.76
2010.38    0.703   242.10
2010.48    0.703   242.43
2010.58    0.703   242.77
2010.68    0.703   243.10
2010.78    0.703   243.44
2010.88    0.702   243.77
2010.98    0.702   244.11
2011.08    0.702   244.45
2011.18    0.701   244.78
2011.28    0.701   245.12
2011.38    0.700   245.46
2011.48    0.700   245.80
2011.58    0.699   246.14
2011.68    0.699   246.47
2011.78    0.698   246.81
2011.88    0.697   247.15
2011.98    0.697   247.50
2012.08    0.696   247.84
2012.18    0.695   248.18
2012.28    0.694   248.52
2012.38    0.693   248.87
2012.48    0.692   249.21
2012.58    0.691   249.56
2012.68    0.690   249.91
2012.78    0.689   250.26
2012.88    0.688   250.61
2012.98    0.687   250.96
2013.08    0.686   251.31
2013.18    0.684   251.66
2013.28    0.683   252.02
2013.38    0.682   252.37
2013.48    0.680   252.73
2013.58    0.679   253.09
2013.68    0.678   253.45
2013.78    0.676   253.81
2013.88    0.675   254.17
2013.98    0.673   254.54
2014.08    0.671   254.91
2014.18    0.670   255.27
2014.28    0.668   255.65
2014.38    0.666   256.02
2014.48    0.665   256.39
2014.58    0.663   256.77
2014.68    0.661   257.15
2014.78    0.659   257.53
2014.88    0.657   257.91
2014.98    0.655   258.30
2015.08    0.653   258.68
2015.18    0.651   259.07
2015.28    0.649   259.47
2015.38    0.647   259.86
2015.48    0.645   260.26
2015.58    0.642   260.66
2015.68    0.640   261.06
2015.78    0.638   261.47
2015.88    0.636   261.88
2015.98    0.633   262.29
2016.08    0.631   262.70
2016.18    0.628   263.12
2016.28    0.626   263.54
2016.38    0.623   263.97
2016.48    0.621   264.40
2016.58    0.618   264.83
2016.68    0.616   265.26
2016.78    0.613   265.70
2016.88    0.610   266.15
2016.98    0.608   266.59
2017.08    0.605   267.04
2017.18    0.602   267.50
2017.28    0.599   267.96
2017.38    0.596   268.42
2017.48    0.593   268.89
2017.58    0.590   269.37
2017.68    0.587   269.84
2017.78    0.584   270.33
2017.88    0.581   270.82
2017.98    0.578   271.31
2018.08    0.575   271.81
2018.18    0.572   272.31
2018.28    0.569   272.82
2018.38    0.565   273.34
2018.48    0.562   273.86
2018.58    0.559   274.39
2018.68    0.555   274.92
2018.78    0.552   275.46
2018.88    0.548   276.01
2018.98    0.545   276.57
2019.08    0.542   277.13
2019.18    0.538   277.70
2019.28    0.534   278.27
2019.38    0.531   278.86
2019.48    0.527   279.45
2019.58    0.524   280.05
2019.68    0.520   280.66
2019.78    0.516   281.28
2019.88    0.512   281.90
2019.98    0.508   282.54
2020.08    0.505   283.19
2020.18    0.501   283.84
2020.28    0.497   284.51
2020.38    0.493   285.19
2020.48    0.489   285.87
2020.58    0.485   286.57
2020.68    0.481   287.28
2020.78    0.477   288.01
2020.88    0.473   288.74
2020.98    0.469   289.49
2021.08    0.464   290.25
2021.18    0.460   291.03
2021.28    0.456   291.82
2021.38    0.452   292.62
2021.48    0.448   293.44
2021.58    0.443   294.28
2021.68    0.439   295.13
2021.78    0.435   296.00
2021.88    0.430   296.89
2021.98    0.426   297.79
2022.08    0.421   298.72
2022.18    0.417   299.66
2022.28    0.412   300.62
2022.38    0.408   301.61
2022.48    0.403   302.62
2022.58    0.399   303.65
2022.68    0.394   304.70
2022.78    0.389   305.78
2022.88    0.385   306.89
2022.98    0.380   308.02
2023.08    0.376   309.18
2023.18    0.371   310.37
2023.28    0.366   311.60
2023.38    0.361   312.85
2023.48    0.357   314.13
2023.58    0.352   315.45
2023.68    0.347   316.81
2023.78    0.342   318.21
2023.88    0.338   319.64
2023.98    0.333   321.12
2024.08    0.328   322.63
2024.18    0.323   324.20
2024.28    0.318   325.81
2024.38    0.313   327.47
2024.48    0.309   329.19
2024.58    0.304   330.96
2024.68    0.299   332.78
2024.78    0.294   334.67
2024.88    0.289   336.62
2024.98    0.284   338.64
2025.08    0.279   340.73
2025.18    0.274   342.90
2025.28    0.269   345.15
2025.38    0.264   347.48
2025.48    0.259   349.91
2025.58    0.254   352.42
2025.68    0.249   355.05
2025.78    0.244   357.78
2025.88    0.239     0.63
2025.98    0.233     3.61
2026.08    0.228     6.73
2026.18    0.223    10.00
2026.28    0.217    13.43
2026.38    0.212    17.04
2026.48    0.206    20.84
2026.58    0.200    24.86
2026.68    0.195    29.11
2026.78    0.189    33.62
2026.88    0.183    38.40
2026.98    0.178    43.49
2027.08    0.172    48.90
2027.18    0.167    54.65
2027.28    0.163    60.73
2027.38    0.159    67.15
2027.48    0.156    73.85
2027.58    0.153    80.80
2027.68    0.152    87.91
2027.78    0.152    95.06
2027.88    0.154   102.16
2027.98    0.156   109.08
2028.08    0.160   115.73
2028.18    0.165   122.04
2028.28    0.170   127.96
2028.38    0.177   133.46
2028.48    0.184   138.54
2028.58    0.192   143.22
2028.68    0.201   147.52
2028.78    0.209   151.48
2028.88    0.218   155.11
2028.98    0.227   158.45
2029.08    0.236   161.54
2029.18    0.246   164.39
2029.28    0.255   167.03
2029.38    0.264   169.49
2029.48    0.274   171.78
2029.58    0.283   173.92
2029.68    0.292   175.93
2029.78    0.301   177.81
2029.88    0.310   179.59
2029.98    0.319   181.26
2030.08    0.328   182.85
2030.18    0.336   184.36
2030.28    0.345   185.79
2030.38    0.353   187.15
2030.48    0.361   188.45
2030.58    0.369   189.69
2030.68    0.377   190.88
2030.78    0.385   192.02
2030.88    0.393   193.12
2030.98    0.400   194.17
2031.08    0.408   195.19
2031.18    0.415   196.17
2031.28    0.422   197.12
2031.38    0.429   198.03
2031.48    0.436   198.92
2031.58    0.443   199.78
2031.68    0.449   200.61
2031.78    0.456   201.42
2031.88    0.462   202.21
2031.98    0.468   202.98
2032.08    0.475   203.72
2032.18    0.481   204.45
2032.28    0.487   205.16
2032.38    0.492   205.85
2032.48    0.498   206.52
2032.58    0.504   207.18
2032.68    0.509   207.83
2032.78    0.515   208.46
2032.88    0.520   209.08
2032.98    0.525   209.69
2033.08    0.530   210.29
2033.18    0.535   210.87
2033.28    0.540   211.44
2033.38    0.545   212.01
2033.48    0.550   212.56
2033.58    0.554   213.10
2033.68    0.559   213.64
2033.78    0.563   214.17
2033.88    0.568   214.68
2033.98    0.572   215.19
2034.08    0.576   215.70
2034.18    0.580   216.19
2034.28    0.584   216.68
2034.38    0.588   217.17
2034.48    0.592   217.64
2034.58    0.596   218.11
2034.68    0.599   218.58
2034.78    0.603   219.03
2034.88    0.607   219.49
2034.98    0.610   219.94
2035.08    0.613   220.38
2035.18    0.617   220.82
2035.28    0.620   221.25
2035.38    0.623   221.68
2035.48    0.626   222.10
2035.58    0.629   222.53
2035.68    0.632   222.94
2035.78    0.635   223.35
2035.88    0.638   223.76
2035.98    0.641   224.17
2036.08    0.643   224.57
2036.18    0.646   224.97
2036.28    0.648   225.37
2036.38    0.651   225.76
2036.48    0.653   226.15
2036.58    0.656   226.54
2036.68    0.658   226.92
2036.78    0.660   227.30
2036.88    0.662   227.68
2036.98    0.664   228.06
2037.08    0.667   228.43
2037.18    0.668   228.80
2037.28    0.670   229.17
2037.38    0.672   229.54
2037.48    0.674   229.91
2037.58    0.676   230.27
2037.68    0.678   230.63
2037.78    0.679   230.99
2037.88    0.681   231.35
2037.98    0.682   231.71
2038.08    0.684   232.07
2038.18    0.685   232.42
2038.28    0.686   232.77
2038.38    0.688   233.12
2038.48    0.689   233.47
2038.58    0.690   233.82
2038.68    0.691   234.17
2038.78    0.692   234.52
2038.88    0.693   234.86
2038.98    0.694   235.20
2039.08    0.695   235.55
2039.18    0.696   235.89
2039.28    0.697   236.23
2039.38    0.698   236.57
2039.48    0.698   236.91
2039.58    0.699   237.25
2039.68    0.700   237.59
2039.78    0.700   237.93
2039.88    0.701   238.27
2039.98    0.701   238.61
2040.08    0.702   238.94
2040.18    0.702   239.28
2040.28    0.702   239.61



 

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 18:16:52


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