Double Star Calculator - Orbit

Orbital Elements for SKW2AA,AB
WDS: SKW2AA,AB WDS ID/Discoverer
P: 13.800 Orbital period (years)
a: 0.0724 Semi-major axis (arcseconds)
i: 60.6 Inclination (degrees)
Ω: 28.0 Longitude of ascending node (degrees)
T: 2010.775 Epoch of periastron passage (year)
e: 0.12 Eccentricity
ω: 233.0 Longitude of periastron (degrees)
Start-Year: 2018.1 Year
End-Year: 2031.9 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for SKW2AA,AB
Position: 041840.60+281916.7 Epoch-2000 right ascension and declination
WDS-ID: 04187+2819 WDS designation
Discoverer Code: SKW2AA,AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 16. Magnitude of the primary
V2: 16. Magnitude of the secondary
Equinox: Equinox
Date: 2004 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: Mnr2008 Reference

Double Star Orbit for SKW2AA,AB



WDS 6th Orbit including measures of SKW2AA,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 SKW2AA,AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.041   341.30
--------------------------
2018.10    0.052    70.46
2018.20    0.050    73.01
2018.30    0.049    75.71
2018.40    0.048    78.57
2018.50    0.046    81.60
2018.60    0.045    84.81
2018.70    0.044    88.20
2018.80    0.043    91.77
2018.90    0.042    95.52
2019.00    0.041    99.44
2019.10    0.040   103.52
2019.20    0.039   107.74
2019.30    0.039   112.06
2019.40    0.039   116.47
2019.50    0.039   120.91
2019.60    0.039   125.35
2019.70    0.039   129.76
2019.80    0.039   134.09
2019.90    0.040   138.32
2020.00    0.041   142.41
2020.10    0.042   146.35
2020.20    0.043   150.12
2020.30    0.044   153.72
2020.40    0.045   157.14
2020.50    0.046   160.39
2020.60    0.047   163.46
2020.70    0.049   166.37
2020.80    0.050   169.12
2020.90    0.051   171.73
2021.00    0.053   174.20
2021.10    0.054   176.55
2021.20    0.055   178.78
2021.30    0.057   180.91
2021.40    0.058   182.95
2021.50    0.059   184.90
2021.60    0.060   186.77
2021.70    0.061   188.58
2021.80    0.062   190.32
2021.90    0.063   192.02
2022.00    0.064   193.66
2022.10    0.065   195.27
2022.20    0.065   196.84
2022.30    0.066   198.38
2022.40    0.066   199.90
2022.50    0.067   201.41
2022.60    0.067   202.90
2022.70    0.067   204.39
2022.80    0.067   205.88
2022.90    0.067   207.37
2023.00    0.066   208.88
2023.10    0.066   210.40
2023.20    0.065   211.95
2023.30    0.065   213.53
2023.40    0.064   215.15
2023.50    0.063   216.82
2023.60    0.062   218.54
2023.70    0.060   220.33
2023.80    0.059   222.20
2023.90    0.058   224.16
2024.00    0.056   226.22
2024.10    0.054   228.41
2024.20    0.053   230.73
2024.30    0.051   233.22
2024.40    0.049   235.89
2024.50    0.047   238.77
2024.60    0.045   241.89
2024.70    0.043   245.28
2024.80    0.042   248.97
2024.90    0.040   253.00
2025.00    0.038   257.40
2025.10    0.037   262.20
2025.20    0.035   267.39
2025.30    0.034   272.98
2025.40    0.033   278.93
2025.50    0.032   285.18
2025.60    0.032   291.62
2025.70    0.032   298.15
2025.80    0.032   304.62
2025.90    0.033   310.92
2026.00    0.034   316.94
2026.10    0.035   322.61
2026.20    0.036   327.89
2026.30    0.038   332.75
2026.40    0.040   337.21
2026.50    0.041   341.30
2026.60    0.043   345.02
2026.70    0.045   348.43
2026.80    0.047   351.55
2026.90    0.049   354.42
2027.00    0.051   357.06
2027.10    0.053   359.50
2027.20    0.055     1.77
2027.30    0.057     3.88
2027.40    0.059     5.86
2027.50    0.061     7.72
2027.60    0.063     9.47
2027.70    0.064    11.13
2027.80    0.066    12.71
2027.90    0.067    14.22
2028.00    0.069    15.67
2028.10    0.070    17.06
2028.20    0.071    18.40
2028.30    0.072    19.70
2028.40    0.073    20.96
2028.50    0.074    22.19
2028.60    0.075    23.40
2028.70    0.075    24.57
2028.80    0.076    25.74
2028.90    0.077    26.88
2029.00    0.077    28.01
2029.10    0.077    29.13
2029.20    0.077    30.25
2029.30    0.077    31.36
2029.40    0.077    32.47
2029.50    0.077    33.59
2029.60    0.077    34.71
2029.70    0.077    35.84
2029.80    0.076    36.98
2029.90    0.076    38.13
2030.00    0.075    39.30
2030.10    0.074    40.49
2030.20    0.074    41.71
2030.30    0.073    42.95
2030.40    0.072    44.22
2030.50    0.071    45.53
2030.60    0.070    46.87
2030.70    0.069    48.26
2030.80    0.068    49.70
2030.90    0.066    51.19
2031.00    0.065    52.73
2031.10    0.064    54.35
2031.20    0.062    56.03
2031.30    0.061    57.79
2031.40    0.059    59.64
2031.50    0.058    61.58
2031.60    0.056    63.62
2031.70    0.055    65.77
2031.80    0.053    68.05
2031.90    0.052    70.46



 

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 15:20:45


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