Double Star Calculator - Orbit

Orbital Elements for TOK720

WDS:	TOK720	WDS ID/Discoverer
P:	10.780	Orbital period (years)
a:	0.0505	Semi-major axis (arcseconds)
i:	152.2	Inclination (degrees)
Ω:	85.7	Longitude of ascending node (degrees)
T:	2023.770	Epoch of periastron passage (year)
e:	0.292	Eccentricity
ω:	134.1	Longitude of periastron (degrees)
Start-Year:	2019.61	Year
End-Year:	2030.39	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK720
Position:	124751.87-512638.2	Epoch-2000 right ascension and declination
WDS-ID:	12479-5127	WDS designation
Discoverer Code:	TOK720	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	111170	HD catalog number
Hipparcos number:	62445	Hipparcos catalog number
V1:	10.1	Magnitude of the primary
V2:	10.5	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Tok2024c	Reference

Double Star Orbit for TOK720

WDS 6th Orbit including measures of TOK720

-- 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 TOK720

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.049   190.54
--------------------------
2019.61    0.062   105.19
2019.71    0.062   103.31
2019.81    0.062   101.41
2019.91    0.061    99.50
2020.01    0.061    97.57
2020.11    0.061    95.62
2020.21    0.060    93.64
2020.31    0.060    91.63
2020.41    0.059    89.58
2020.51    0.059    87.50
2020.61    0.058    85.37
2020.71    0.057    83.20
2020.81    0.056    80.97
2020.91    0.056    78.68
2021.01    0.055    76.32
2021.11    0.054    73.89
2021.21    0.053    71.37
2021.31    0.052    68.77
2021.41    0.051    66.07
2021.51    0.050    63.25
2021.61    0.049    60.31
2021.71    0.048    57.24
2021.81    0.047    54.01
2021.91    0.046    50.62
2022.01    0.044    47.05
2022.11    0.043    43.28
2022.21    0.042    39.29
2022.31    0.041    35.07
2022.41    0.040    30.60
2022.51    0.038    25.86
2022.61    0.037    20.84
2022.71    0.036    15.54
2022.81    0.035     9.95
2022.91    0.035     4.08
2023.01    0.034   357.96
2023.11    0.033   351.62
2023.21    0.033   345.11
2023.31    0.033   338.47
2023.41    0.033   331.77
2023.51    0.033   325.08
2023.61    0.033   318.45
2023.71    0.033   311.93
2023.81    0.034   305.57
2023.91    0.034   299.38
2024.01    0.035   293.40
2024.11    0.036   287.62
2024.21    0.036   282.05
2024.31    0.037   276.68
2024.41    0.038   271.50
2024.51    0.038   266.50
2024.61    0.039   261.67
2024.71    0.040   256.99
2024.81    0.040   252.45
2024.91    0.041   248.04
2025.01    0.041   243.75
2025.11    0.042   239.58
2025.21    0.042   235.51
2025.31    0.043   231.54
2025.41    0.043   227.66
2025.51    0.044   223.87
2025.61    0.044   220.17
2025.71    0.045   216.54
2025.81    0.045   213.00
2025.91    0.046   209.53
2026.01    0.046   206.14
2026.11    0.047   202.82
2026.21    0.047   199.57
2026.31    0.048   196.39
2026.41    0.048   193.28
2026.51    0.049   190.24
2026.61    0.049   187.26
2026.71    0.050   184.34
2026.81    0.051   181.49
2026.91    0.051   178.70
2027.01    0.052   175.97
2027.11    0.052   173.30
2027.21    0.053   170.68
2027.31    0.053   168.12
2027.41    0.054   165.61
2027.51    0.054   163.15
2027.61    0.055   160.74
2027.71    0.055   158.38
2027.81    0.056   156.06
2027.91    0.057   153.78
2028.01    0.057   151.55
2028.11    0.058   149.35
2028.21    0.058   147.19
2028.31    0.058   145.06
2028.41    0.059   142.97
2028.51    0.059   140.90
2028.61    0.060   138.87
2028.71    0.060   136.86
2028.81    0.060   134.87
2028.91    0.061   132.91
2029.01    0.061   130.97
2029.11    0.061   129.05
2029.21    0.062   127.14
2029.31    0.062   125.25
2029.41    0.062   123.37
2029.51    0.062   121.50
2029.61    0.062   119.64
2029.71    0.062   117.79
2029.81    0.062   115.94
2029.91    0.062   114.09
2030.01    0.062   112.24
2030.11    0.062   110.39
2030.21    0.062   108.54
2030.31    0.062   106.68

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 16:50:06