Double Star Calculator - Orbit

Orbital Elements for WSI140

WDS:	WSI140	WDS ID/Discoverer
P:	11.770	Orbital period (years)
a:	0.217	Semi-major axis (arcseconds)
i:	0.0	Inclination (degrees)
Ω:	93.4	Longitude of ascending node (degrees)
T:	2001.980	Epoch of periastron passage (year)
e:	0.394	Eccentricity
ω:	0.0	Longitude of periastron (degrees)
Start-Year:	2019.115	Year
End-Year:	2030.885	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for WSI140
Position:	235944.83-440459.9	Epoch-2000 right ascension and declination
WDS-ID:	23597-4405	WDS designation
Discoverer Code:	WSI140	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	13.4	Magnitude of the primary
V2:	13.9	Magnitude of the secondary
Equinox:		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:	Tok2019c	Reference

Double Star Orbit for WSI140

WDS 6th Orbit including measures of WSI140

-- 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 WSI140

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.158   159.32
--------------------------
2019.12    0.301   265.85
2019.21    0.301   267.31
2019.31    0.302   268.76
2019.41    0.302   270.22
2019.51    0.302   271.66
2019.61    0.302   273.11
2019.71    0.302   274.56
2019.81    0.302   276.01
2019.91    0.302   277.46
2020.01    0.302   278.91
2020.11    0.301   280.37
2020.21    0.300   281.83
2020.31    0.300   283.30
2020.41    0.299   284.78
2020.51    0.298   286.27
2020.61    0.296   287.77
2020.71    0.295   289.28
2020.81    0.294   290.81
2020.91    0.292   292.35
2021.01    0.291   293.91
2021.11    0.289   295.49
2021.21    0.287   297.09
2021.31    0.285   298.71
2021.41    0.283   300.35
2021.51    0.280   302.02
2021.61    0.278   303.72
2021.71    0.275   305.46
2021.81    0.273   307.22
2021.91    0.270   309.02
2022.01    0.267   310.86
2022.11    0.264   312.74
2022.21    0.260   314.67
2022.31    0.257   316.65
2022.41    0.254   318.68
2022.51    0.250   320.77
2022.61    0.246   322.92
2022.71    0.242   325.13
2022.81    0.239   327.42
2022.91    0.234   329.79
2023.01    0.230   332.24
2023.11    0.226   334.78
2023.21    0.222   337.43
2023.31    0.217   340.18
2023.41    0.212   343.05
2023.51    0.208   346.05
2023.61    0.203   349.19
2023.71    0.198   352.48
2023.81    0.193   355.94
2023.91    0.188   359.58
2024.01    0.183     3.42
2024.11    0.178     7.47
2024.21    0.173    11.75
2024.31    0.169    16.28
2024.41    0.164    21.08
2024.51    0.159    26.17
2024.61    0.155    31.55
2024.71    0.150    37.25
2024.81    0.146    43.27
2024.91    0.143    49.61
2025.01    0.139    56.26
2025.11    0.137    63.20
2025.21    0.135    70.41
2025.31    0.133    77.82
2025.41    0.132    85.38
2025.51    0.132    93.02
2025.61    0.132   100.66
2025.71    0.133   108.23
2025.81    0.134   115.66
2025.91    0.136   122.89
2026.01    0.139   129.86
2026.11    0.142   136.54
2026.21    0.146   142.91
2026.31    0.150   148.96
2026.41    0.154   154.69
2026.51    0.159   160.11
2026.61    0.163   165.22
2026.71    0.168   170.05
2026.81    0.173   174.61
2026.91    0.178   178.91
2027.01    0.183   182.98
2027.11    0.188   186.84
2027.21    0.193   190.50
2027.31    0.198   193.98
2027.41    0.202   197.29
2027.51    0.207   200.44
2027.61    0.212   203.45
2027.71    0.217   206.34
2027.81    0.221   209.10
2027.91    0.226   211.76
2028.01    0.230   214.31
2028.11    0.234   216.77
2028.21    0.238   219.15
2028.31    0.242   221.44
2028.41    0.246   223.67
2028.51    0.250   225.82
2028.61    0.253   227.91
2028.71    0.257   229.95
2028.81    0.260   231.93
2028.91    0.263   233.86
2029.01    0.266   235.75
2029.11    0.269   237.60
2029.21    0.272   239.40
2029.31    0.275   241.17
2029.41    0.278   242.90
2029.51    0.280   244.61
2029.61    0.282   246.28
2029.71    0.285   247.93
2029.81    0.287   249.55
2029.91    0.289   251.15
2030.01    0.290   252.73
2030.11    0.292   254.29
2030.21    0.294   255.84
2030.31    0.295   257.37
2030.41    0.296   258.88
2030.51    0.298   260.38
2030.61    0.299   261.87
2030.71    0.300   263.35
2030.81    0.300   264.82

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 18:56:26