Double Star Calculator - Orbit

Orbital Elements for TOK371
WDS: TOK371 WDS ID/Discoverer
P: 13.300 Orbital period (years)
a: 0.104 Semi-major axis (arcseconds)
i: 20.4 Inclination (degrees)
Ω: 79.8 Longitude of ascending node (degrees)
T: 2011.210 Epoch of periastron passage (year)
e: 0.29 Eccentricity
ω: 319.8 Longitude of periastron (degrees)
Start-Year: 2018.35 Year
End-Year: 2031.65 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for TOK371
Position: 210405.69+035850.4 Epoch-2000 right ascension and declination
WDS-ID: 21041+0359 WDS designation
Discoverer Code: TOK371 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 200565 HD catalog number
Hipparcos number: 103983 Hipparcos catalog number
V1: 8.42 Magnitude of the primary
V2: 9. 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: Tok2018i Reference

Double Star Orbit for TOK371



WDS 6th Orbit including measures of TOK371

-- 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 TOK371
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.090   123.82
--------------------------
2018.35    0.131   228.91
2018.45    0.131   230.43
2018.55    0.131   231.95
2018.65    0.131   233.48
2018.75    0.131   235.01
2018.85    0.131   236.54
2018.95    0.131   238.08
2019.05    0.130   239.62
2019.15    0.130   241.18
2019.25    0.129   242.74
2019.35    0.129   244.31
2019.45    0.129   245.89
2019.55    0.128   247.49
2019.65    0.127   249.10
2019.75    0.127   250.72
2019.85    0.126   252.37
2019.95    0.125   254.03
2020.05    0.124   255.71
2020.15    0.124   257.42
2020.25    0.123   259.15
2020.35    0.122   260.91
2020.45    0.121   262.70
2020.55    0.120   264.51
2020.65    0.119   266.37
2020.75    0.117   268.25
2020.85    0.116   270.18
2020.95    0.115   272.15
2021.05    0.114   274.17
2021.15    0.112   276.23
2021.25    0.111   278.34
2021.35    0.109   280.52
2021.45    0.108   282.75
2021.55    0.106   285.04
2021.65    0.105   287.41
2021.75    0.103   289.85
2021.85    0.101   292.37
2021.95    0.100   294.98
2022.05    0.098   297.67
2022.15    0.096   300.46
2022.25    0.094   303.36
2022.35    0.093   306.36
2022.45    0.091   309.48
2022.55    0.089   312.73
2022.65    0.087   316.10
2022.75    0.086   319.61
2022.85    0.084   323.25
2022.95    0.082   327.05
2023.05    0.081   330.99
2023.15    0.079   335.08
2023.25    0.078   339.32
2023.35    0.077   343.70
2023.45    0.076   348.23
2023.55    0.075   352.90
2023.65    0.074   357.68
2023.75    0.073     2.58
2023.85    0.072     7.57
2023.95    0.072    12.64
2024.05    0.071    17.76
2024.15    0.071    22.92
2024.25    0.071    28.08
2024.35    0.071    33.24
2024.45    0.072    38.36
2024.55    0.072    43.44
2024.65    0.073    48.46
2024.75    0.073    53.40
2024.85    0.074    58.25
2024.95    0.075    63.01
2025.05    0.076    67.67
2025.15    0.076    72.22
2025.25    0.077    76.67
2025.35    0.078    81.01
2025.45    0.079    85.25
2025.55    0.080    89.38
2025.65    0.081    93.40
2025.75    0.082    97.33
2025.85    0.083   101.16
2025.95    0.084   104.89
2026.05    0.085   108.53
2026.15    0.087   112.08
2026.25    0.088   115.54
2026.35    0.089   118.91
2026.45    0.090   122.20
2026.55    0.091   125.41
2026.65    0.092   128.55
2026.75    0.093   131.61
2026.85    0.094   134.59
2026.95    0.095   137.51
2027.05    0.097   140.36
2027.15    0.098   143.14
2027.25    0.099   145.86
2027.35    0.100   148.51
2027.45    0.101   151.11
2027.55    0.102   153.65
2027.65    0.103   156.14
2027.75    0.104   158.57
2027.85    0.106   160.95
2027.95    0.107   163.28
2028.05    0.108   165.56
2028.15    0.109   167.80
2028.25    0.110   170.00
2028.35    0.111   172.15
2028.45    0.112   174.26
2028.55    0.113   176.33
2028.65    0.114   178.37
2028.75    0.115   180.37
2028.85    0.116   182.34
2028.95    0.117   184.27
2029.05    0.118   186.17
2029.15    0.119   188.05
2029.25    0.120   189.89
2029.35    0.121   191.71
2029.45    0.121   193.50
2029.55    0.122   195.27
2029.65    0.123   197.02
2029.75    0.124   198.75
2029.85    0.124   200.45
2029.95    0.125   202.14
2030.05    0.126   203.80
2030.15    0.126   205.45
2030.25    0.127   207.09
2030.35    0.128   208.71
2030.45    0.128   210.31
2030.55    0.129   211.91
2030.65    0.129   213.49
2030.75    0.129   215.06
2030.85    0.130   216.62
2030.95    0.130   218.18
2031.05    0.130   219.72
2031.15    0.131   221.26
2031.25    0.131   222.80
2031.35    0.131   224.33
2031.45    0.131   225.86
2031.55    0.131   227.38
2031.65    0.131   228.91



 

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 18:22:14


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