Double Star Calculator - Orbit

Orbital Elements for WCK2AA,AB
WDS: WCK2AA,AB WDS ID/Discoverer
P: 16.907 Orbital period (years)
a: 0.15809800000000002 Semi-major axis (arcseconds)
i: 161.01 Inclination (degrees)
Ω: 120.62 Longitude of ascending node (degrees)
T: 2017.645 Epoch of periastron passage (year)
e: 0.4615 Eccentricity
ω: 271.73 Longitude of periastron (degrees)
Start-Year: 2016.5462944580197 Year
End-Year: 2033.4537055419803 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for WCK2AA,AB
Position: 203938.25+155443.4 Epoch-2000 right ascension and declination
WDS-ID: 20396+1555 WDS designation
Discoverer Code: WCK2AA,AB Discover designation and components
ADS number: 14121 Aitken Double Star catalog
HD number: 196867 HD catalog number
Hipparcos number: 101958 Hipparcos catalog number
V1: 3.86 Magnitude of the primary
V2: 6.43 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2019 Date of last observation
Orbit grade: 1 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: CIA2021d Reference

Double Star Orbit for WCK2AA,AB



WDS 6th Orbit including measures of WCK2AA,AB

-- 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 WCK2AA,AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.218    25.03
--------------------------
2016.55    0.101   272.95
2016.65    0.098   268.47
2016.75    0.096   263.72
2016.85    0.093   258.68
2016.95    0.090   253.33
2017.05    0.088   247.69
2017.15    0.086   241.74
2017.25    0.084   235.52
2017.35    0.082   229.05
2017.45    0.081   222.38
2017.55    0.081   215.57
2017.65    0.081   208.70
2017.75    0.081   201.82
2017.85    0.081   195.03
2017.95    0.083   188.39
2018.05    0.084   181.96
2018.15    0.086   175.78
2018.25    0.088   169.89
2018.35    0.091   164.29
2018.45    0.093   158.99
2018.55    0.096   153.98
2018.65    0.099   149.27
2018.75    0.102   144.83
2018.85    0.105   140.64
2018.95    0.108   136.70
2019.05    0.111   132.97
2019.15    0.114   129.45
2019.25    0.117   126.11
2019.35    0.120   122.95
2019.45    0.123   119.94
2019.55    0.126   117.08
2019.65    0.129   114.35
2019.75    0.132   111.75
2019.85    0.135   109.26
2019.95    0.138   106.87
2020.05    0.141   104.57
2020.15    0.144   102.37
2020.25    0.146   100.24
2020.35    0.149    98.20
2020.45    0.152    96.22
2020.55    0.154    94.30
2020.65    0.156    92.45
2020.75    0.159    90.66
2020.85    0.161    88.91
2020.95    0.164    87.22
2021.05    0.166    85.57
2021.15    0.168    83.97
2021.25    0.170    82.41
2021.35    0.172    80.88
2021.45    0.174    79.39
2021.55    0.176    77.94
2021.65    0.178    76.52
2021.75    0.180    75.12
2021.85    0.182    73.76
2021.95    0.184    72.42
2022.05    0.185    71.11
2022.15    0.187    69.82
2022.25    0.189    68.55
2022.35    0.190    67.30
2022.45    0.192    66.08
2022.55    0.193    64.87
2022.65    0.195    63.68
2022.75    0.196    62.51
2022.85    0.197    61.36
2022.95    0.199    60.22
2023.05    0.200    59.10
2023.15    0.201    57.98
2023.25    0.202    56.89
2023.35    0.203    55.80
2023.45    0.204    54.73
2023.55    0.205    53.66
2023.65    0.206    52.61
2023.75    0.207    51.57
2023.85    0.208    50.54
2023.95    0.209    49.51
2024.05    0.210    48.50
2024.15    0.211    47.49
2024.25    0.212    46.49
2024.35    0.212    45.50
2024.45    0.213    44.51
2024.55    0.214    43.53
2024.65    0.214    42.55
2024.75    0.215    41.58
2024.85    0.215    40.62
2024.95    0.216    39.66
2025.05    0.216    38.70
2025.15    0.217    37.75
2025.25    0.217    36.80
2025.35    0.217    35.85
2025.45    0.218    34.91
2025.55    0.218    33.97
2025.65    0.218    33.03
2025.75    0.218    32.09
2025.85    0.218    31.15
2025.95    0.218    30.22
2026.05    0.218    29.28
2026.15    0.218    28.34
2026.25    0.218    27.41
2026.35    0.218    26.47
2026.45    0.218    25.54
2026.55    0.218    24.60
2026.65    0.218    23.66
2026.75    0.218    22.72
2026.85    0.218    21.78
2026.95    0.217    20.83
2027.05    0.217    19.89
2027.15    0.217    18.94
2027.25    0.216    17.98
2027.35    0.216    17.02
2027.45    0.215    16.06
2027.55    0.215    15.09
2027.65    0.214    14.12
2027.75    0.213    13.14
2027.85    0.213    12.16
2027.95    0.212    11.17
2028.05    0.211    10.18
2028.15    0.211     9.17
2028.25    0.210     8.16
2028.35    0.209     7.14
2028.45    0.208     6.12
2028.55    0.207     5.08
2028.65    0.206     4.03
2028.75    0.205     2.98
2028.85    0.204     1.91
2028.95    0.203     0.83
2029.05    0.202   359.74
2029.15    0.201   358.64
2029.25    0.199   357.52
2029.35    0.198   356.39
2029.45    0.197   355.24
2029.55    0.195   354.08
2029.65    0.194   352.90
2029.75    0.192   351.70
2029.85    0.191   350.48
2029.95    0.189   349.25
2030.05    0.188   347.99
2030.15    0.186   346.71
2030.25    0.184   345.41
2030.35    0.182   344.08
2030.45    0.181   342.72
2030.55    0.179   341.34
2030.65    0.177   339.93
2030.75    0.175   338.48
2030.85    0.173   337.01
2030.95    0.171   335.49
2031.05    0.169   333.94
2031.15    0.166   332.35
2031.25    0.164   330.72
2031.35    0.162   329.04
2031.45    0.159   327.31
2031.55    0.157   325.52
2031.65    0.155   323.68
2031.75    0.152   321.78
2031.85    0.149   319.82
2031.95    0.147   317.78
2032.05    0.144   315.67
2032.15    0.141   313.48
2032.25    0.138   311.19
2032.35    0.136   308.81
2032.45    0.133   306.33
2032.55    0.130   303.73
2032.65    0.127   301.01
2032.75    0.124   298.16
2032.85    0.120   295.16
2032.95    0.117   292.00
2033.05    0.114   288.67
2033.15    0.111   285.14
2033.25    0.108   281.41
2033.35    0.105   277.46
2033.45    0.102   273.27



 

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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 18:17:28


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