Double Star Calculator - Orbit

Orbital Elements for TOK49AA,AB

WDS:	TOK49AA,AB	WDS ID/Discoverer
P:	26.270	Orbital period (years)
a:	0.1814	Semi-major axis (arcseconds)
i:	56.0	Inclination (degrees)
Ω:	344.1	Longitude of ascending node (degrees)
T:	2006.280	Epoch of periastron passage (year)
e:	0.342	Eccentricity
ω:	131.9	Longitude of periastron (degrees)
Start-Year:	2011.865	Year
End-Year:	2038.135	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK49AA,AB
Position:	153447.96-280750.8	Epoch-2000 right ascension and declination
WDS-ID:	15348-2808	WDS designation
Discoverer Code:	TOK49AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	138722	HD catalog number
Hipparcos number:	76275	Hipparcos catalog number
V1:	9.1	Magnitude of the primary
V2:	11.4	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		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:	Tok2016e	Reference

Double Star Orbit for TOK49AA,AB

WDS 6th Orbit including measures of TOK49AA,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 TOK49AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.192   350.27
--------------------------
2011.87    0.121   217.52
2011.96    0.120   219.15
2012.06    0.120   220.79
2012.16    0.119   222.45
2012.26    0.119   224.12
2012.36    0.118   225.80
2012.46    0.118   227.49
2012.56    0.118   229.20
2012.66    0.118   230.91
2012.76    0.117   232.62
2012.86    0.117   234.34
2012.96    0.117   236.06
2013.06    0.117   237.79
2013.16    0.117   239.51
2013.26    0.117   241.23
2013.36    0.118   242.95
2013.46    0.118   244.66
2013.56    0.118   246.37
2013.66    0.118   248.06
2013.76    0.119   249.75
2013.86    0.119   251.42
2013.96    0.120   253.08
2014.06    0.120   254.72
2014.16    0.121   256.35
2014.26    0.122   257.95
2014.36    0.122   259.54
2014.46    0.123   261.11
2014.56    0.124   262.66
2014.66    0.125   264.19
2014.76    0.126   265.69
2014.86    0.127   267.17
2014.96    0.128   268.63
2015.06    0.129   270.07
2015.16    0.130   271.48
2015.26    0.131   272.86
2015.36    0.133   274.22
2015.46    0.134   275.56
2015.56    0.135   276.87
2015.66    0.136   278.15
2015.76    0.138   279.41
2015.86    0.139   280.65
2015.96    0.140   281.86
2016.06    0.142   283.05
2016.16    0.143   284.22
2016.26    0.145   285.36
2016.36    0.146   286.48
2016.46    0.148   287.58
2016.56    0.149   288.65
2016.66    0.151   289.71
2016.76    0.152   290.74
2016.86    0.154   291.75
2016.96    0.155   292.75
2017.06    0.157   293.72
2017.16    0.158   294.67
2017.26    0.160   295.61
2017.36    0.161   296.53
2017.46    0.163   297.43
2017.56    0.165   298.31
2017.66    0.166   299.18
2017.76    0.168   300.03
2017.86    0.169   300.87
2017.96    0.171   301.69
2018.06    0.172   302.49
2018.16    0.174   303.29
2018.26    0.175   304.07
2018.36    0.177   304.83
2018.46    0.178   305.58
2018.56    0.180   306.32
2018.66    0.181   307.05
2018.76    0.183   307.77
2018.86    0.184   308.47
2018.96    0.185   309.17
2019.06    0.187   309.85
2019.16    0.188   310.52
2019.26    0.190   311.19
2019.36    0.191   311.84
2019.46    0.192   312.49
2019.56    0.194   313.13
2019.66    0.195   313.75
2019.76    0.196   314.38
2019.86    0.197   314.99
2019.96    0.198   315.59
2020.06    0.200   316.19
2020.16    0.201   316.78
2020.26    0.202   317.37
2020.36    0.203   317.94
2020.46    0.204   318.52
2020.56    0.205   319.08
2020.66    0.206   319.64
2020.76    0.207   320.20
2020.86    0.208   320.75
2020.96    0.209   321.29
2021.06    0.210   321.83
2021.16    0.211   322.37
2021.26    0.212   322.90
2021.36    0.212   323.43
2021.46    0.213   323.95
2021.56    0.214   324.47
2021.66    0.215   324.99
2021.76    0.215   325.50
2021.86    0.216   326.01
2021.96    0.216   326.52
2022.06    0.217   327.02
2022.16    0.217   327.53
2022.26    0.218   328.03
2022.36    0.218   328.52
2022.46    0.219   329.02
2022.56    0.219   329.52
2022.66    0.219   330.01
2022.76    0.219   330.50
2022.86    0.220   330.99
2022.96    0.220   331.49
2023.06    0.220   331.98
2023.16    0.220   332.47
2023.26    0.220   332.96
2023.36    0.220   333.45
2023.46    0.220   333.94
2023.56    0.220   334.43
2023.66    0.220   334.92
2023.76    0.219   335.41
2023.86    0.219   335.90
2023.96    0.219   336.40
2024.06    0.218   336.89
2024.16    0.218   337.39
2024.26    0.217   337.89
2024.36    0.217   338.39
2024.46    0.216   338.90
2024.56    0.216   339.40
2024.66    0.215   339.91
2024.76    0.214   340.43
2024.86    0.214   340.95
2024.96    0.213   341.47
2025.06    0.212   341.99
2025.16    0.211   342.53
2025.26    0.210   343.06
2025.36    0.209   343.60
2025.46    0.207   344.15
2025.56    0.206   344.70
2025.66    0.205   345.26
2025.76    0.204   345.83
2025.86    0.202   346.41
2025.96    0.201   346.99
2026.06    0.199   347.58
2026.16    0.198   348.18
2026.26    0.196   348.79
2026.36    0.194   349.42
2026.46    0.193   350.05
2026.56    0.191   350.69
2026.66    0.189   351.35
2026.76    0.187   352.02
2026.86    0.185   352.71
2026.96    0.183   353.41
2027.06    0.181   354.13
2027.16    0.178   354.86
2027.26    0.176   355.62
2027.36    0.174   356.39
2027.46    0.171   357.19
2027.56    0.169   358.01
2027.66    0.166   358.86
2027.76    0.164   359.73
2027.86    0.161     0.63
2027.96    0.158     1.56
2028.06    0.155     2.53
2028.16    0.152     3.53
2028.26    0.149     4.57
2028.36    0.146     5.65
2028.46    0.143     6.78
2028.56    0.140     7.95
2028.66    0.137     9.18
2028.76    0.134    10.47
2028.86    0.131    11.82
2028.96    0.128    13.24
2029.06    0.124    14.74
2029.16    0.121    16.31
2029.26    0.118    17.98
2029.36    0.114    19.74
2029.46    0.111    21.61
2029.56    0.108    23.59
2029.66    0.104    25.70
2029.76    0.101    27.94
2029.86    0.098    30.34
2029.96    0.095    32.89
2030.06    0.092    35.61
2030.16    0.089    38.52
2030.26    0.086    41.63
2030.36    0.083    44.94
2030.46    0.081    48.45
2030.56    0.079    52.18
2030.66    0.077    56.12
2030.76    0.075    60.25
2030.86    0.073    64.57
2030.96    0.072    69.04
2031.06    0.071    73.63
2031.16    0.071    78.31
2031.26    0.071    83.02
2031.36    0.071    87.71
2031.46    0.072    92.35
2031.56    0.073    96.89
2031.66    0.074   101.30
2031.76    0.076   105.54
2031.86    0.077   109.59
2031.96    0.079   113.45
2032.06    0.082   117.11
2032.16    0.084   120.58
2032.26    0.086   123.84
2032.36    0.089   126.92
2032.46    0.092   129.83
2032.56    0.094   132.57
2032.66    0.097   135.16
2032.76    0.100   137.61
2032.86    0.102   139.93
2032.96    0.105   142.13
2033.06    0.108   144.23
2033.16    0.110   146.23
2033.26    0.112   148.15
2033.36    0.115   149.98
2033.46    0.117   151.75
2033.56    0.119   153.45
2033.66    0.121   155.09
2033.76    0.123   156.69
2033.86    0.125   158.23
2033.96    0.126   159.74
2034.06    0.128   161.21
2034.16    0.129   162.64
2034.26    0.130   164.05
2034.36    0.131   165.43
2034.46    0.132   166.79
2034.56    0.133   168.13
2034.66    0.134   169.46
2034.76    0.135   170.77
2034.86    0.135   172.07
2034.96    0.136   173.36
2035.06    0.136   174.64
2035.16    0.136   175.92
2035.26    0.136   177.20
2035.36    0.136   178.47
2035.46    0.136   179.74
2035.56    0.136   181.02
2035.66    0.136   182.29
2035.76    0.136   183.57
2035.86    0.136   184.86
2035.96    0.135   186.15
2036.06    0.135   187.46
2036.16    0.134   188.77
2036.26    0.134   190.09
2036.36    0.133   191.42
2036.46    0.132   192.76
2036.56    0.132   194.12
2036.66    0.131   195.49
2036.76    0.130   196.87
2036.86    0.130   198.27
2036.96    0.129   199.69
2037.06    0.128   201.12
2037.16    0.128   202.57
2037.26    0.127   204.04
2037.36    0.126   205.52
2037.46    0.125   207.02
2037.56    0.125   208.54
2037.66    0.124   210.07
2037.76    0.123   211.62
2037.86    0.123   213.19
2037.96    0.122   214.78
2038.06    0.121   216.38

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 17:17:04