Double Star Calculator - Orbit

Orbital Elements for WSI79

WDS:	WSI79	WDS ID/Discoverer
P:	24.460	Orbital period (years)
a:	0.205	Semi-major axis (arcseconds)
i:	144.7	Inclination (degrees)
Ω:	137.9	Longitude of ascending node (degrees)
T:	2015.220	Epoch of periastron passage (year)
e:	0.74	Eccentricity
ω:	325.1	Longitude of periastron (degrees)
Start-Year:	2012.77	Year
End-Year:	2037.23	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for WSI79
Position:	140159.80-210800.3	Epoch-2000 right ascension and declination
WDS-ID:	14020-2108	WDS designation
Discoverer Code:	WSI79	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	122391	HD catalog number
Hipparcos number:	68552	Hipparcos catalog number
V1:	9.3	Magnitude of the primary
V2:	12.1	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Tok2018b	Reference

Double Star Orbit for WSI79

WDS 6th Orbit including measures of WSI79

-- 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 WSI79

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.332   350.44
--------------------------
2012.77    0.170   304.24
2012.87    0.165   303.03
2012.97    0.160   301.74
2013.07    0.155   300.36
2013.17    0.149   298.89
2013.27    0.144   297.31
2013.37    0.138   295.60
2013.47    0.133   293.75
2013.57    0.127   291.73
2013.67    0.121   289.51
2013.77    0.115   287.06
2013.87    0.108   284.33
2013.97    0.102   281.27
2014.07    0.096   277.79
2014.17    0.089   273.82
2014.27    0.083   269.21
2014.37    0.076   263.82
2014.47    0.070   257.45
2014.57    0.064   249.85
2014.67    0.058   240.75
2014.77    0.054   229.93
2014.87    0.050   217.38
2014.97    0.048   203.41
2015.07    0.048   188.78
2015.17    0.049   174.41
2015.27    0.052   161.00
2015.37    0.054   148.88
2015.47    0.058   138.06
2015.57    0.061   128.41
2015.67    0.064   119.77
2015.77    0.068   112.01
2015.87    0.071   105.00
2015.97    0.075    98.65
2016.07    0.079    92.88
2016.17    0.082    87.63
2016.27    0.086    82.83
2016.37    0.090    78.43
2016.47    0.094    74.39
2016.57    0.098    70.68
2016.67    0.101    67.24
2016.77    0.105    64.07
2016.87    0.109    61.12
2016.97    0.113    58.38
2017.07    0.117    55.82
2017.17    0.121    53.43
2017.27    0.125    51.19
2017.37    0.129    49.09
2017.47    0.133    47.10
2017.57    0.137    45.23
2017.67    0.141    43.47
2017.77    0.144    41.79
2017.87    0.148    40.20
2017.97    0.152    38.69
2018.07    0.156    37.26
2018.17    0.159    35.89
2018.27    0.163    34.57
2018.37    0.166    33.32
2018.47    0.170    32.12
2018.57    0.173    30.97
2018.67    0.177    29.86
2018.77    0.180    28.80
2018.87    0.184    27.77
2018.97    0.187    26.78
2019.07    0.190    25.83
2019.17    0.194    24.91
2019.27    0.197    24.02
2019.37    0.200    23.15
2019.47    0.203    22.32
2019.57    0.206    21.51
2019.67    0.209    20.72
2019.77    0.212    19.96
2019.87    0.215    19.22
2019.97    0.218    18.49
2020.07    0.221    17.79
2020.17    0.224    17.10
2020.27    0.227    16.43
2020.37    0.230    15.78
2020.47    0.232    15.15
2020.57    0.235    14.52
2020.67    0.238    13.92
2020.77    0.240    13.32
2020.87    0.243    12.74
2020.97    0.245    12.17
2021.07    0.248    11.61
2021.17    0.250    11.07
2021.27    0.253    10.53
2021.37    0.255    10.00
2021.47    0.258     9.49
2021.57    0.260     8.98
2021.67    0.262     8.48
2021.77    0.264     7.99
2021.87    0.267     7.51
2021.97    0.269     7.04
2022.07    0.271     6.57
2022.17    0.273     6.11
2022.27    0.275     5.66
2022.37    0.277     5.22
2022.47    0.279     4.78
2022.57    0.281     4.35
2022.67    0.283     3.92
2022.77    0.285     3.50
2022.87    0.287     3.08
2022.97    0.289     2.67
2023.07    0.291     2.27
2023.17    0.292     1.87
2023.27    0.294     1.47
2023.37    0.296     1.08
2023.47    0.297     0.70
2023.57    0.299     0.31
2023.67    0.301   359.94
2023.77    0.302   359.56
2023.87    0.304   359.19
2023.97    0.305   358.83
2024.07    0.307   358.46
2024.17    0.308   358.10
2024.27    0.309   357.75
2024.37    0.311   357.39
2024.47    0.312   357.04
2024.57    0.313   356.70
2024.67    0.315   356.35
2024.77    0.316   356.01
2024.87    0.317   355.67
2024.97    0.318   355.34
2025.07    0.319   355.00
2025.17    0.320   354.67
2025.27    0.322   354.34
2025.37    0.323   354.01
2025.47    0.324   353.69
2025.57    0.325   353.36
2025.67    0.325   353.04
2025.77    0.326   352.72
2025.87    0.327   352.41
2025.97    0.328   352.09
2026.07    0.329   351.77
2026.17    0.330   351.46
2026.27    0.330   351.15
2026.37    0.331   350.84
2026.47    0.332   350.53
2026.57    0.332   350.22
2026.67    0.333   349.91
2026.77    0.334   349.61
2026.87    0.334   349.30
2026.97    0.335   349.00
2027.07    0.335   348.70
2027.17    0.336   348.40
2027.27    0.336   348.10
2027.37    0.336   347.79
2027.47    0.337   347.49
2027.57    0.337   347.20
2027.67    0.337   346.90
2027.77    0.338   346.60
2027.87    0.338   346.30
2027.97    0.338   346.00
2028.07    0.338   345.71
2028.17    0.338   345.41
2028.27    0.338   345.11
2028.37    0.338   344.82
2028.47    0.338   344.52
2028.57    0.338   344.22
2028.67    0.338   343.93
2028.77    0.338   343.63
2028.87    0.338   343.33
2028.97    0.338   343.04
2029.07    0.338   342.74
2029.17    0.338   342.44
2029.27    0.337   342.14
2029.37    0.337   341.84
2029.47    0.337   341.54
2029.57    0.336   341.24
2029.67    0.336   340.94
2029.77    0.335   340.64
2029.87    0.335   340.34
2029.97    0.334   340.04
2030.07    0.334   339.73
2030.17    0.333   339.43
2030.27    0.333   339.12
2030.37    0.332   338.81
2030.47    0.331   338.50
2030.57    0.331   338.19
2030.67    0.330   337.88
2030.77    0.329   337.57
2030.87    0.328   337.26
2030.97    0.327   336.94
2031.07    0.326   336.62
2031.17    0.325   336.30
2031.27    0.324   335.98
2031.37    0.323   335.66
2031.47    0.322   335.33
2031.57    0.321   335.00
2031.67    0.320   334.67
2031.77    0.319   334.34
2031.87    0.317   334.00
2031.97    0.316   333.67
2032.07    0.315   333.32
2032.17    0.313   332.98
2032.27    0.312   332.63
2032.37    0.311   332.28
2032.47    0.309   331.93
2032.57    0.308   331.57
2032.67    0.306   331.21
2032.77    0.304   330.85
2032.87    0.303   330.48
2032.97    0.301   330.11
2033.07    0.299   329.73
2033.17    0.297   329.35
2033.27    0.295   328.96
2033.37    0.293   328.57
2033.47    0.291   328.17
2033.57    0.289   327.77
2033.67    0.287   327.36
2033.77    0.285   326.94
2033.87    0.283   326.52
2033.97    0.281   326.10
2034.07    0.278   325.66
2034.17    0.276   325.22
2034.27    0.274   324.77
2034.37    0.271   324.31
2034.47    0.269   323.85
2034.57    0.266   323.37
2034.67    0.263   322.89
2034.77    0.261   322.39
2034.87    0.258   321.89
2034.97    0.255   321.37
2035.07    0.252   320.84
2035.17    0.249   320.30
2035.27    0.246   319.75
2035.37    0.243   319.18
2035.47    0.240   318.60
2035.57    0.236   318.00
2035.67    0.233   317.38
2035.77    0.230   316.75
2035.87    0.226   316.09
2035.97    0.223   315.42
2036.07    0.219   314.72
2036.17    0.215   314.00
2036.27    0.211   313.26
2036.37    0.207   312.48
2036.47    0.203   311.68
2036.57    0.199   310.84
2036.67    0.195   309.97
2036.77    0.191   309.06
2036.87    0.186   308.10
2036.97    0.182   307.10
2037.07    0.177   306.05
2037.17    0.173   304.94

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 17:01:12