Double Star Calculator - Orbit

Orbital Elements for TOK51AA,AB
WDS: TOK51AA,AB WDS ID/Discoverer
P: 25.000 Orbital period (years)
a: 0.262 Semi-major axis (arcseconds)
i: 95.8 Inclination (degrees)
Ω: 59.9 Longitude of ascending node (degrees)
T: 2027.730 Epoch of periastron passage (year)
e: 0.328 Eccentricity
ω: 206.9 Longitude of periastron (degrees)
Start-Year: 2012.5 Year
End-Year: 2037.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for TOK51AA,AB
Position: 163831.07-572811.4 Epoch-2000 right ascension and declination
WDS-ID: 16385-5728 WDS designation
Discoverer Code: TOK51AA,AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 149499 HD catalog number
Hipparcos number: 81478 Hipparcos catalog number
V1: 8.7 Magnitude of the primary
V2: 12.7 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: n Flags
Ephemerides: Ephemerides
Code: Tok2019c Reference

Double Star Orbit for TOK51AA,AB



WDS 6th Orbit including measures of TOK51AA,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 TOK51AA,AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.182   240.81
--------------------------
2012.50    0.335    59.36
2012.60    0.335    59.27
2012.70    0.336    59.19
2012.80    0.336    59.10
2012.90    0.336    59.02
2013.00    0.336    58.94
2013.10    0.336    58.85
2013.20    0.335    58.77
2013.30    0.335    58.69
2013.40    0.335    58.60
2013.50    0.334    58.52
2013.60    0.333    58.43
2013.70    0.333    58.35
2013.80    0.332    58.26
2013.90    0.331    58.18
2014.00    0.330    58.09
2014.10    0.329    58.00
2014.20    0.328    57.91
2014.30    0.327    57.83
2014.40    0.325    57.74
2014.50    0.324    57.65
2014.60    0.322    57.56
2014.70    0.321    57.47
2014.80    0.319    57.37
2014.90    0.317    57.28
2015.00    0.315    57.19
2015.10    0.313    57.09
2015.20    0.311    56.99
2015.30    0.309    56.90
2015.40    0.307    56.80
2015.50    0.305    56.70
2015.60    0.302    56.59
2015.70    0.300    56.49
2015.80    0.297    56.38
2015.90    0.295    56.28
2016.00    0.292    56.17
2016.10    0.289    56.06
2016.20    0.287    55.94
2016.30    0.284    55.83
2016.40    0.281    55.71
2016.50    0.278    55.59
2016.60    0.274    55.46
2016.70    0.271    55.34
2016.80    0.268    55.21
2016.90    0.265    55.07
2017.00    0.261    54.94
2017.10    0.258    54.80
2017.20    0.254    54.65
2017.30    0.250    54.50
2017.40    0.247    54.35
2017.50    0.243    54.19
2017.60    0.239    54.03
2017.70    0.235    53.86
2017.80    0.231    53.69
2017.90    0.227    53.51
2018.00    0.223    53.32
2018.10    0.219    53.13
2018.20    0.215    52.93
2018.30    0.210    52.72
2018.40    0.206    52.50
2018.50    0.201    52.27
2018.60    0.197    52.04
2018.70    0.192    51.79
2018.80    0.188    51.53
2018.90    0.183    51.25
2019.00    0.178    50.96
2019.10    0.174    50.66
2019.20    0.169    50.34
2019.30    0.164    50.00
2019.40    0.159    49.64
2019.50    0.154    49.25
2019.60    0.149    48.84
2019.70    0.144    48.40
2019.80    0.139    47.93
2019.90    0.134    47.42
2020.00    0.129    46.87
2020.10    0.123    46.28
2020.20    0.118    45.63
2020.30    0.113    44.92
2020.40    0.108    44.15
2020.50    0.102    43.29
2020.60    0.097    42.34
2020.70    0.092    41.27
2020.80    0.086    40.08
2020.90    0.081    38.72
2021.00    0.076    37.18
2021.10    0.070    35.40
2021.20    0.065    33.34
2021.30    0.060    30.91
2021.40    0.055    28.03
2021.50    0.050    24.57
2021.60    0.045    20.37
2021.70    0.041    15.21
2021.80    0.037     8.84
2021.90    0.033     1.00
2022.00    0.030   351.51
2022.10    0.028   340.45
2022.20    0.028   328.38
2022.30    0.028   316.26
2022.40    0.030   305.10
2022.50    0.033   295.47
2022.60    0.036   287.50
2022.70    0.040   281.02
2022.80    0.045   275.77
2022.90    0.049   271.49
2023.00    0.054   267.97
2023.10    0.059   265.04
2023.20    0.064   262.57
2023.30    0.070   260.47
2023.40    0.075   258.66
2023.50    0.080   257.08
2023.60    0.085   255.70
2023.70    0.090   254.48
2023.80    0.096   253.38
2023.90    0.101   252.40
2024.00    0.106   251.52
2024.10    0.111   250.71
2024.20    0.116   249.97
2024.30    0.120   249.30
2024.40    0.125   248.67
2024.50    0.130   248.09
2024.60    0.134   247.55
2024.70    0.139   247.04
2024.80    0.143   246.56
2024.90    0.147   246.11
2025.00    0.151   245.68
2025.10    0.154   245.28
2025.20    0.158   244.89
2025.30    0.161   244.52
2025.40    0.164   244.17
2025.50    0.167   243.82
2025.60    0.170   243.49
2025.70    0.173   243.17
2025.80    0.175   242.86
2025.90    0.177   242.55
2026.00    0.178   242.25
2026.10    0.180   241.96
2026.20    0.181   241.67
2026.30    0.182   241.38
2026.40    0.182   241.10
2026.50    0.182   240.81
2026.60    0.182   240.53
2026.70    0.182   240.25
2026.80    0.181   239.96
2026.90    0.180   239.67
2027.00    0.178   239.38
2027.10    0.177   239.08
2027.20    0.174   238.77
2027.30    0.172   238.46
2027.40    0.169   238.13
2027.50    0.166   237.80
2027.60    0.162   237.45
2027.70    0.158   237.08
2027.80    0.154   236.69
2027.90    0.150   236.28
2028.00    0.145   235.85
2028.10    0.140   235.38
2028.20    0.134   234.88
2028.30    0.129   234.34
2028.40    0.123   233.74
2028.50    0.117   233.08
2028.60    0.110   232.35
2028.70    0.104   231.53
2028.80    0.097   230.59
2028.90    0.090   229.52
2029.00    0.083   228.27
2029.10    0.076   226.78
2029.20    0.069   224.99
2029.30    0.062   222.78
2029.40    0.055   220.00
2029.50    0.048   216.38
2029.60    0.041   211.51
2029.70    0.034   204.70
2029.80    0.028   194.87
2029.90    0.024   180.50
2030.00    0.021   160.88
2030.10    0.021   138.86
2030.20    0.024   119.91
2030.30    0.029   106.28
2030.40    0.035    96.97
2030.50    0.042    90.50
2030.60    0.049    85.85
2030.70    0.056    82.38
2030.80    0.063    79.70
2030.90    0.070    77.58
2031.00    0.078    75.86
2031.10    0.085    74.43
2031.20    0.092    73.23
2031.30    0.099    72.20
2031.40    0.107    71.31
2031.50    0.114    70.53
2031.60    0.121    69.84
2031.70    0.128    69.23
2031.80    0.134    68.68
2031.90    0.141    68.18
2032.00    0.148    67.73
2032.10    0.154    67.31
2032.20    0.161    66.93
2032.30    0.167    66.58
2032.40    0.173    66.25
2032.50    0.179    65.95
2032.60    0.185    65.67
2032.70    0.191    65.40
2032.80    0.197    65.15
2032.90    0.202    64.91
2033.00    0.208    64.69
2033.10    0.213    64.47
2033.20    0.218    64.27
2033.30    0.224    64.08
2033.40    0.229    63.89
2033.50    0.233    63.72
2033.60    0.238    63.55
2033.70    0.243    63.38
2033.80    0.247    63.23
2033.90    0.252    63.08
2034.00    0.256    62.93
2034.10    0.260    62.79
2034.20    0.264    62.65
2034.30    0.268    62.52
2034.40    0.272    62.39
2034.50    0.276    62.26
2034.60    0.279    62.14
2034.70    0.283    62.02
2034.80    0.286    61.90
2034.90    0.290    61.79
2035.00    0.293    61.68
2035.10    0.296    61.57
2035.20    0.299    61.46
2035.30    0.301    61.36
2035.40    0.304    61.26
2035.50    0.307    61.15
2035.60    0.309    61.05
2035.70    0.311    60.96
2035.80    0.314    60.86
2035.90    0.316    60.76
2036.00    0.318    60.67
2036.10    0.320    60.58
2036.20    0.321    60.49
2036.30    0.323    60.39
2036.40    0.325    60.30
2036.50    0.326    60.22
2036.60    0.327    60.13
2036.70    0.329    60.04
2036.80    0.330    59.95
2036.90    0.331    59.87
2037.00    0.332    59.78
2037.10    0.333    59.69
2037.20    0.333    59.61
2037.30    0.334    59.52
2037.40    0.335    59.44






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 17:29:40



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