Double Star Calculator - Orbit

Orbital Elements for TOK897

WDS:	TOK897	WDS ID/Discoverer
P:	12.760	Orbital period (years)
a:	0.063	Semi-major axis (arcseconds)
i:	50.2	Inclination (degrees)
Ω:	86.1	Longitude of ascending node (degrees)
T:	2017.904	Epoch of periastron passage (year)
e:	0.5966	Eccentricity
ω:	101.8	Longitude of periastron (degrees)
Start-Year:	2018.62	Year
End-Year:	2031.38	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK897
Position:	121022.15-435215.4	Epoch-2000 right ascension and declination
WDS-ID:	12104-4352	WDS designation
Discoverer Code:	TOK897	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	105750	HD catalog number
Hipparcos number:	59341	Hipparcos catalog number
V1:	9.4	Magnitude of the primary
V2:	10.2	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2023	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:	Tok2024a	Reference

Double Star Orbit for TOK897

WDS 6th Orbit including measures of TOK897

-- 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 TOK897

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.070    41.23
--------------------------
2018.62    0.036   265.62
2018.72    0.038   269.82
2018.82    0.040   273.59
2018.92    0.042   277.04
2019.02    0.043   280.22
2019.12    0.045   283.20
2019.22    0.046   286.00
2019.32    0.047   288.67
2019.42    0.048   291.22
2019.52    0.049   293.67
2019.62    0.050   296.04
2019.72    0.050   298.33
2019.82    0.051   300.55
2019.92    0.052   302.73
2020.02    0.052   304.85
2020.12    0.053   306.92
2020.22    0.053   308.96
2020.32    0.054   310.96
2020.42    0.054   312.92
2020.52    0.055   314.86
2020.62    0.055   316.77
2020.72    0.055   318.65
2020.82    0.056   320.50
2020.92    0.056   322.34
2021.02    0.057   324.15
2021.12    0.057   325.94
2021.22    0.057   327.70
2021.32    0.057   329.46
2021.42    0.058   331.19
2021.52    0.058   332.90
2021.62    0.058   334.60
2021.72    0.059   336.27
2021.82    0.059   337.94
2021.92    0.059   339.58
2022.02    0.060   341.21
2022.12    0.060   342.82
2022.22    0.060   344.42
2022.32    0.060   346.00
2022.42    0.061   347.57
2022.52    0.061   349.12
2022.62    0.061   350.66
2022.72    0.062   352.18
2022.82    0.062   353.68
2022.92    0.062   355.18
2023.02    0.063   356.65
2023.12    0.063   358.12
2023.22    0.063   359.57
2023.32    0.063     1.00
2023.42    0.064     2.42
2023.52    0.064     3.83
2023.62    0.064     5.23
2023.72    0.065     6.61
2023.82    0.065     7.98
2023.92    0.065     9.34
2024.02    0.066    10.68
2024.12    0.066    12.01
2024.22    0.066    13.34
2024.32    0.066    14.65
2024.42    0.067    15.94
2024.52    0.067    17.23
2024.62    0.067    18.51
2024.72    0.067    19.78
2024.82    0.068    21.04
2024.92    0.068    22.29
2025.02    0.068    23.53
2025.12    0.068    24.77
2025.22    0.069    25.99
2025.32    0.069    27.21
2025.42    0.069    28.42
2025.52    0.069    29.63
2025.62    0.069    30.83
2025.72    0.069    32.02
2025.82    0.070    33.21
2025.92    0.070    34.40
2026.02    0.070    35.58
2026.12    0.070    36.76
2026.22    0.070    37.94
2026.32    0.070    39.11
2026.42    0.070    40.29
2026.52    0.070    41.47
2026.62    0.070    42.64
2026.72    0.070    43.82
2026.82    0.070    45.00
2026.92    0.070    46.19
2027.02    0.069    47.38
2027.12    0.069    48.58
2027.22    0.069    49.78
2027.32    0.069    51.00
2027.42    0.068    52.22
2027.52    0.068    53.46
2027.62    0.068    54.71
2027.72    0.067    55.97
2027.82    0.067    57.26
2027.92    0.066    58.56
2028.02    0.066    59.89
2028.12    0.065    61.25
2028.22    0.064    62.63
2028.32    0.063    64.05
2028.42    0.062    65.50
2028.52    0.061    67.01
2028.62    0.060    68.56
2028.72    0.059    70.16
2028.82    0.058    71.84
2028.92    0.057    73.59
2029.02    0.055    75.43
2029.12    0.054    77.38
2029.22    0.052    79.45
2029.32    0.050    81.67
2029.42    0.048    84.07
2029.52    0.046    86.69
2029.62    0.043    89.59
2029.72    0.041    92.85
2029.82    0.038    96.57
2029.92    0.035   100.90
2030.02    0.032   106.08
2030.12    0.028   112.46
2030.22    0.025   120.57
2030.32    0.022   131.22
2030.42    0.019   145.43
2030.52    0.017   163.81
2030.62    0.016   184.94
2030.72    0.018   205.15
2030.82    0.020   221.66
2030.92    0.023   234.25
2031.02    0.026   243.87
2031.12    0.029   251.44
2031.22    0.032   257.62
2031.32    0.035   262.84

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 16:43:51