Double Star Calculator - Orbit

Orbital Elements for TOK344AA,AB
WDS: TOK344AA,AB WDS ID/Discoverer
P: 11.640 Orbital period (years)
a: 0.1363 Semi-major axis (arcseconds)
i: 87.4 Inclination (degrees)
Ω: 348.1 Longitude of ascending node (degrees)
T: 2021.598 Epoch of periastron passage (year)
e: 0.368 Eccentricity
ω: 332.4 Longitude of periastron (degrees)
Start-Year: 2019.18 Year
End-Year: 2030.82 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for TOK344AA,AB
Position: 210113.36-351102.6 Epoch-2000 right ascension and declination
WDS-ID: 21012-3511 WDS designation
Discoverer Code: TOK344AA,AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 199918 HD catalog number
Hipparcos number: 103735 Hipparcos catalog number
V1: 7.8 Magnitude of the primary
V2: 10.0 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Tok2023b Reference

Double Star Orbit for TOK344AA,AB



WDS 6th Orbit including measures of TOK344AA,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 TOK344AA,AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.136   165.77
--------------------------
2019.18    0.115   169.96
2019.28    0.109   170.15
2019.38    0.103   170.37
2019.48    0.096   170.61
2019.58    0.089   170.90
2019.68    0.082   171.23
2019.78    0.074   171.63
2019.88    0.066   172.13
2019.98    0.058   172.75
2020.08    0.050   173.59
2020.18    0.041   174.77
2020.28    0.032   176.58
2020.38    0.024   179.75
2020.48    0.015   186.74
2020.58    0.007   212.44
2020.68    0.006   303.25
2020.78    0.014   330.53
2020.88    0.023   337.77
2020.98    0.032   341.02
2021.08    0.041   342.88
2021.18    0.049   344.11
2021.28    0.056   344.99
2021.38    0.063   345.66
2021.48    0.070   346.21
2021.58    0.075   346.67
2021.68    0.080   347.07
2021.78    0.084   347.43
2021.88    0.087   347.76
2021.98    0.089   348.07
2022.08    0.090   348.37
2022.18    0.090   348.68
2022.28    0.089   348.98
2022.38    0.087   349.29
2022.48    0.085   349.61
2022.58    0.082   349.96
2022.68    0.079   350.33
2022.78    0.075   350.75
2022.88    0.070   351.21
2022.98    0.065   351.74
2023.08    0.060   352.35
2023.18    0.055   353.09
2023.28    0.049   354.00
2023.38    0.043   355.16
2023.48    0.037   356.69
2023.58    0.031   358.83
2023.68    0.024     2.06
2023.78    0.018     7.47
2023.88    0.012    18.18
2023.98    0.008    44.66
2024.08    0.007    98.08
2024.18    0.011   131.64
2024.28    0.017   144.73
2024.38    0.023   151.01
2024.48    0.029   154.63
2024.58    0.035   156.97
2024.68    0.042   158.60
2024.78    0.048   159.82
2024.88    0.054   160.76
2024.98    0.060   161.50
2025.08    0.066   162.12
2025.18    0.072   162.63
2025.28    0.077   163.07
2025.38    0.083   163.44
2025.48    0.089   163.77
2025.58    0.094   164.06
2025.68    0.099   164.32
2025.78    0.104   164.56
2025.88    0.109   164.77
2025.98    0.114   164.97
2026.08    0.119   165.14
2026.18    0.123   165.31
2026.28    0.127   165.47
2026.38    0.132   165.61
2026.48    0.136   165.75
2026.58    0.140   165.87
2026.68    0.143   165.99
2026.78    0.147   166.11
2026.88    0.150   166.22
2026.98    0.153   166.32
2027.08    0.156   166.43
2027.18    0.159   166.52
2027.28    0.162   166.62
2027.38    0.164   166.71
2027.48    0.167   166.80
2027.58    0.169   166.88
2027.68    0.171   166.97
2027.78    0.172   167.05
2027.88    0.174   167.13
2027.98    0.175   167.21
2028.08    0.176   167.29
2028.18    0.177   167.36
2028.28    0.178   167.44
2028.38    0.178   167.52
2028.48    0.179   167.59
2028.58    0.179   167.67
2028.68    0.179   167.75
2028.78    0.178   167.82
2028.88    0.178   167.90
2028.98    0.177   167.98
2029.08    0.176   168.05
2029.18    0.174   168.13
2029.28    0.173   168.21
2029.38    0.171   168.30
2029.48    0.169   168.38
2029.58    0.167   168.47
2029.68    0.164   168.55
2029.78    0.161   168.65
2029.88    0.158   168.74
2029.98    0.155   168.84
2030.08    0.151   168.94
2030.18    0.147   169.05
2030.28    0.143   169.17
2030.38    0.138   169.29
2030.48    0.134   169.42
2030.58    0.128   169.56
2030.68    0.123   169.72
2030.78    0.117   169.88



 

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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.


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Double Star Calculator:   Version 1.2 ($Rev: 2397 $)
Report created:   2026-06-25 18:21:47


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