Double Star Calculator - Orbit

Orbital Elements for TOK370

WDS:	TOK370	WDS ID/Discoverer
P:	22.500	Orbital period (years)
a:	0.141	Semi-major axis (arcseconds)
i:	95.5	Inclination (degrees)
Ω:	184.7	Longitude of ascending node (degrees)
T:	2015.924	Epoch of periastron passage (year)
e:	0.389	Eccentricity
ω:	81.2	Longitude of periastron (degrees)
Start-Year:	2013.75	Year
End-Year:	2036.25	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK370
Position:	205945.50-202818.8	Epoch-2000 right ascension and declination
WDS-ID:	20598-2028	WDS designation
Discoverer Code:	TOK370	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	199751	HD catalog number
Hipparcos number:	103626	Hipparcos catalog number
V1:	9.20	Magnitude of the primary
V2:	10.	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:	Tok2023a	Reference

Double Star Orbit for TOK370

WDS 6th Orbit including measures of TOK370

-- 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 TOK370

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.051   343.61
--------------------------
2013.75    0.107   183.93
2013.85    0.104   183.68
2013.95    0.102   183.41
2014.05    0.099   183.13
2014.15    0.096   182.84
2014.25    0.093   182.52
2014.35    0.090   182.19
2014.45    0.086   181.82
2014.55    0.082   181.43
2014.65    0.079   181.00
2014.75    0.074   180.52
2014.85    0.070   179.98
2014.95    0.066   179.37
2015.05    0.061   178.67
2015.15    0.056   177.85
2015.25    0.051   176.88
2015.35    0.046   175.69
2015.45    0.041   174.19
2015.55    0.035   172.26
2015.65    0.030   169.62
2015.75    0.025   165.83
2015.85    0.019   159.90
2015.95    0.014   149.63
2016.05    0.010   129.62
2016.15    0.008    93.63
2016.25    0.010    58.51
2016.35    0.015    39.38
2016.45    0.020    29.50
2016.55    0.025    23.76
2016.65    0.030    20.07
2016.75    0.036    17.49
2016.85    0.041    15.59
2016.95    0.047    14.13
2017.05    0.052    12.96
2017.15    0.057    12.01
2017.25    0.062    11.20
2017.35    0.066    10.52
2017.45    0.071     9.93
2017.55    0.076     9.40
2017.65    0.080     8.94
2017.75    0.084     8.52
2017.85    0.088     8.14
2017.95    0.092     7.79
2018.05    0.095     7.47
2018.15    0.099     7.18
2018.25    0.102     6.90
2018.35    0.105     6.64
2018.45    0.108     6.39
2018.55    0.111     6.16
2018.65    0.114     5.94
2018.75    0.116     5.72
2018.85    0.119     5.52
2018.95    0.121     5.32
2019.05    0.123     5.13
2019.15    0.125     4.95
2019.25    0.127     4.77
2019.35    0.128     4.60
2019.45    0.130     4.43
2019.55    0.131     4.27
2019.65    0.132     4.10
2019.75    0.133     3.95
2019.85    0.134     3.79
2019.95    0.135     3.63
2020.05    0.136     3.48
2020.15    0.137     3.33
2020.25    0.137     3.18
2020.35    0.138     3.03
2020.45    0.138     2.89
2020.55    0.138     2.74
2020.65    0.139     2.59
2020.75    0.139     2.45
2020.85    0.139     2.30
2020.95    0.139     2.15
2021.05    0.138     2.01
2021.15    0.138     1.86
2021.25    0.138     1.71
2021.35    0.137     1.56
2021.45    0.137     1.41
2021.55    0.136     1.26
2021.65    0.136     1.11
2021.75    0.135     0.96
2021.85    0.134     0.80
2021.95    0.133     0.65
2022.05    0.132     0.49
2022.15    0.131     0.33
2022.25    0.130     0.16
2022.35    0.129   360.00
2022.45    0.128   359.83
2022.55    0.127   359.65
2022.65    0.126   359.48
2022.75    0.124   359.30
2022.85    0.123   359.11
2022.95    0.122   358.93
2023.05    0.120   358.74
2023.15    0.119   358.54
2023.25    0.117   358.34
2023.35    0.116   358.13
2023.45    0.114   357.92
2023.55    0.112   357.70
2023.65    0.111   357.47
2023.75    0.109   357.24
2023.85    0.107   357.00
2023.95    0.105   356.75
2024.05    0.103   356.49
2024.15    0.102   356.22
2024.25    0.100   355.94
2024.35    0.098   355.66
2024.45    0.096   355.36
2024.55    0.094   355.04
2024.65    0.092   354.71
2024.75    0.090   354.37
2024.85    0.087   354.01
2024.95    0.085   353.64
2025.05    0.083   353.24
2025.15    0.081   352.83
2025.25    0.079   352.39
2025.35    0.077   351.92
2025.45    0.074   351.43
2025.55    0.072   350.91
2025.65    0.070   350.36
2025.75    0.068   349.76
2025.85    0.065   349.13
2025.95    0.063   348.45
2026.05    0.061   347.72
2026.15    0.059   346.93
2026.25    0.056   346.08
2026.35    0.054   345.16
2026.45    0.052   344.15
2026.55    0.049   343.05
2026.65    0.047   341.84
2026.75    0.045   340.50
2026.85    0.042   339.03
2026.95    0.040   337.38
2027.05    0.038   335.54
2027.15    0.036   333.47
2027.25    0.034   331.13
2027.35    0.031   328.48
2027.45    0.029   325.45
2027.55    0.027   321.98
2027.65    0.026   318.00
2027.75    0.024   313.42
2027.85    0.022   308.18
2027.95    0.021   302.21
2028.05    0.020   295.53
2028.15    0.019   288.18
2028.25    0.019   280.35
2028.35    0.019   272.28
2028.45    0.019   264.29
2028.55    0.020   256.66
2028.65    0.020   249.60
2028.75    0.022   243.25
2028.85    0.023   237.62
2028.95    0.025   232.70
2029.05    0.026   228.41
2029.15    0.028   224.67
2029.25    0.030   221.41
2029.35    0.032   218.56
2029.45    0.035   216.06
2029.55    0.037   213.85
2029.65    0.039   211.89
2029.75    0.041   210.14
2029.85    0.043   208.57
2029.95    0.046   207.16
2030.05    0.048   205.89
2030.15    0.050   204.73
2030.25    0.053   203.67
2030.35    0.055   202.69
2030.45    0.057   201.80
2030.55    0.060   200.98
2030.65    0.062   200.21
2030.75    0.064   199.50
2030.85    0.066   198.84
2030.95    0.069   198.22
2031.05    0.071   197.64
2031.15    0.073   197.10
2031.25    0.075   196.59
2031.35    0.077   196.10
2031.45    0.079   195.64
2031.55    0.081   195.21
2031.65    0.084   194.80
2031.75    0.086   194.40
2031.85    0.088   194.03
2031.95    0.090   193.67
2032.05    0.091   193.33
2032.15    0.093   193.00
2032.25    0.095   192.68
2032.35    0.097   192.38
2032.45    0.099   192.09
2032.55    0.100   191.80
2032.65    0.102   191.53
2032.75    0.104   191.26
2032.85    0.105   191.01
2032.95    0.107   190.76
2033.05    0.108   190.52
2033.15    0.110   190.28
2033.25    0.111   190.05
2033.35    0.112   189.82
2033.45    0.114   189.60
2033.55    0.115   189.39
2033.65    0.116   189.18
2033.75    0.117   188.97
2033.85    0.118   188.76
2033.95    0.119   188.56
2034.05    0.119   188.36
2034.15    0.120   188.17
2034.25    0.121   187.97
2034.35    0.121   187.78
2034.45    0.121   187.59
2034.55    0.122   187.40
2034.65    0.122   187.21
2034.75    0.122   187.02
2034.85    0.122   186.83
2034.95    0.122   186.64
2035.05    0.121   186.45
2035.15    0.121   186.26
2035.25    0.120   186.07
2035.35    0.120   185.87
2035.45    0.119   185.68
2035.55    0.118   185.48
2035.65    0.117   185.27
2035.75    0.115   185.06
2035.85    0.114   184.85
2035.95    0.112   184.63
2036.05    0.111   184.41
2036.15    0.109   184.17

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 18:21:13