Double Star Calculator - Orbit

Orbital Elements for WSI84BA,BB
WDS: WSI84BA,BB WDS ID/Discoverer
P: 10.460 Orbital period (years)
a: 0.1284 Semi-major axis (arcseconds)
i: 141.8 Inclination (degrees)
Ω: 179.1 Longitude of ascending node (degrees)
T: 2012.623 Epoch of periastron passage (year)
e: 0.24 Eccentricity
ω: 34.9 Longitude of periastron (degrees)
Start-Year: 2019.77 Year
End-Year: 2030.23 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for WSI84BA,BB
Position: 160539.42-325142.6 Epoch-2000 right ascension and declination
WDS-ID: 16057-3252 WDS designation
Discoverer Code: WSI84BA,BB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 10.0 Magnitude of the primary
V2: 10.1 Magnitude of the secondary
Equinox: Equinox
Date: 2017 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Tok2018j Reference

Double Star Orbit for WSI84BA,BB



WDS 6th Orbit including measures of WSI84BA,BB

-- 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 WSI84BA,BB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.147     4.28
--------------------------
2019.77    0.116   282.95
2019.87    0.115   279.70
2019.97    0.113   276.36
2020.07    0.112   272.93
2020.17    0.110   269.41
2020.27    0.109   265.82
2020.37    0.108   262.15
2020.47    0.107   258.41
2020.57    0.106   254.62
2020.67    0.106   250.77
2020.77    0.105   246.88
2020.87    0.105   242.95
2020.97    0.105   239.00
2021.07    0.104   235.04
2021.17    0.104   231.06
2021.27    0.104   227.08
2021.37    0.104   223.10
2021.47    0.104   219.13
2021.57    0.104   215.16
2021.67    0.105   211.19
2021.77    0.105   207.23
2021.87    0.104   203.26
2021.97    0.104   199.29
2022.07    0.104   195.30
2022.17    0.103   191.27
2022.27    0.103   187.21
2022.37    0.102   183.09
2022.47    0.101   178.89
2022.57    0.100   174.60
2022.67    0.098   170.20
2022.77    0.097   165.66
2022.87    0.095   160.97
2022.97    0.093   156.11
2023.07    0.092   151.04
2023.17    0.090   145.76
2023.27    0.088   140.26
2023.37    0.086   134.54
2023.47    0.085   128.59
2023.57    0.083   122.46
2023.67    0.083   116.16
2023.77    0.082   109.76
2023.87    0.082   103.33
2023.97    0.082    96.92
2024.07    0.083    90.61
2024.17    0.085    84.47
2024.27    0.086    78.55
2024.37    0.089    72.89
2024.47    0.091    67.52
2024.57    0.094    62.44
2024.67    0.097    57.67
2024.77    0.100    53.19
2024.87    0.103    48.98
2024.97    0.106    45.03
2025.07    0.110    41.32
2025.17    0.113    37.83
2025.27    0.116    34.54
2025.37    0.120    31.43
2025.47    0.123    28.48
2025.57    0.126    25.68
2025.67    0.129    23.00
2025.77    0.131    20.44
2025.87    0.134    17.99
2025.97    0.137    15.62
2026.07    0.139    13.34
2026.17    0.141    11.14
2026.27    0.143     9.00
2026.37    0.145     6.91
2026.47    0.147     4.88
2026.57    0.148     2.89
2026.67    0.150     0.93
2026.77    0.151   359.01
2026.87    0.152   357.12
2026.97    0.153   355.25
2027.07    0.153   353.40
2027.17    0.154   351.56
2027.27    0.154   349.73
2027.37    0.154   347.91
2027.47    0.154   346.09
2027.57    0.154   344.27
2027.67    0.154   342.45
2027.77    0.153   340.61
2027.87    0.153   338.77
2027.97    0.152   336.91
2028.07    0.151   335.03
2028.17    0.150   333.13
2028.27    0.149   331.20
2028.37    0.148   329.25
2028.47    0.147   327.26
2028.57    0.146   325.24
2028.67    0.144   323.18
2028.77    0.143   321.07
2028.87    0.141   318.92
2028.97    0.139   316.71
2029.07    0.138   314.45
2029.17    0.136   312.13
2029.27    0.134   309.75
2029.37    0.132   307.30
2029.47    0.130   304.78
2029.57    0.128   302.19
2029.67    0.126   299.51
2029.77    0.124   296.76
2029.87    0.123   293.92
2029.97    0.121   290.99
2030.07    0.119   287.97
2030.17    0.117   284.86



 

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.


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Double Star Calculator:   Version 1.2 ($Rev: 2397 $)
Report created:   2026-06-25 17:22:39


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