Double Star Calculator - Orbit

Orbital Elements for YSC158AA,AB
WDS: YSC158AA,AB WDS ID/Discoverer
P: 15.181 Orbital period (years)
a: 0.0738 Semi-major axis (arcseconds)
i: 77.8 Inclination (degrees)
Ω: 96.9 Longitude of ascending node (degrees)
T: 2013.780 Epoch of periastron passage (year)
e: 0.1725 Eccentricity
ω: 161.3 Longitude of periastron (degrees)
Start-Year: 2017.4095 Year
End-Year: 2032.5905 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for YSC158AA,AB
Position: 173613.32-175149.0 Epoch-2000 right ascension and declination
WDS-ID: 17362-1752 WDS designation
Discoverer Code: YSC158AA,AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 159589 HD catalog number
Hipparcos number: 86142 Hipparcos catalog number
V1: 8.2 Magnitude of the primary
V2: 8.8 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2024 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: Tok2024e Reference

Double Star Orbit for YSC158AA,AB



WDS 6th Orbit including measures of YSC158AA,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 YSC158AA,AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.016   161.68
--------------------------
2017.41    0.016   352.95
2017.51    0.016     3.28
2017.61    0.016    13.70
2017.71    0.017    23.59
2017.81    0.018    32.49
2017.91    0.019    40.20
2018.01    0.021    46.75
2018.11    0.023    52.26
2018.21    0.025    56.89
2018.31    0.027    60.79
2018.41    0.030    64.11
2018.51    0.032    66.96
2018.61    0.034    69.42
2018.71    0.037    71.56
2018.81    0.039    73.45
2018.91    0.041    75.13
2019.01    0.044    76.63
2019.11    0.046    77.98
2019.21    0.048    79.20
2019.31    0.050    80.31
2019.41    0.052    81.33
2019.51    0.055    82.27
2019.61    0.057    83.14
2019.71    0.059    83.96
2019.81    0.061    84.71
2019.91    0.062    85.42
2020.01    0.064    86.09
2020.11    0.066    86.73
2020.21    0.068    87.33
2020.31    0.069    87.90
2020.41    0.071    88.45
2020.51    0.072    88.97
2020.61    0.074    89.47
2020.71    0.075    89.95
2020.81    0.076    90.42
2020.91    0.078    90.87
2021.01    0.079    91.31
2021.11    0.080    91.74
2021.21    0.081    92.16
2021.31    0.082    92.56
2021.41    0.082    92.96
2021.51    0.083    93.36
2021.61    0.084    93.74
2021.71    0.084    94.12
2021.81    0.085    94.50
2021.91    0.085    94.87
2022.01    0.085    95.24
2022.11    0.086    95.61
2022.21    0.086    95.97
2022.31    0.086    96.34
2022.41    0.086    96.70
2022.51    0.085    97.07
2022.61    0.085    97.44
2022.71    0.085    97.81
2022.81    0.084    98.19
2022.91    0.084    98.57
2023.01    0.083    98.95
2023.11    0.083    99.34
2023.21    0.082    99.74
2023.31    0.081   100.15
2023.41    0.080   100.56
2023.51    0.079   100.99
2023.61    0.078   101.43
2023.71    0.076   101.88
2023.81    0.075   102.35
2023.91    0.074   102.84
2024.01    0.072   103.34
2024.11    0.070   103.87
2024.21    0.069   104.43
2024.31    0.067   105.01
2024.41    0.065   105.63
2024.51    0.063   106.28
2024.61    0.061   106.98
2024.71    0.059   107.72
2024.81    0.057   108.53
2024.91    0.055   109.39
2025.01    0.052   110.33
2025.11    0.050   111.36
2025.21    0.047   112.50
2025.31    0.045   113.76
2025.41    0.042   115.17
2025.51    0.040   116.76
2025.61    0.037   118.57
2025.71    0.035   120.66
2025.81    0.032   123.10
2025.91    0.029   125.97
2026.01    0.027   129.41
2026.11    0.024   133.58
2026.21    0.022   138.71
2026.31    0.019   145.06
2026.41    0.018   152.97
2026.51    0.016   162.68
2026.61    0.015   174.19
2026.71    0.014   186.97
2026.81    0.015   199.93
2026.91    0.016   211.89
2027.01    0.017   222.14
2027.11    0.019   230.56
2027.21    0.021   237.34
2027.31    0.023   242.81
2027.41    0.026   247.26
2027.51    0.028   250.92
2027.61    0.031   253.97
2027.71    0.034   256.57
2027.81    0.036   258.79
2027.91    0.038   260.73
2028.01    0.041   262.44
2028.11    0.043   263.96
2028.21    0.045   265.33
2028.31    0.048   266.58
2028.41    0.050   267.72
2028.51    0.051   268.77
2028.61    0.053   269.76
2028.71    0.055   270.68
2028.81    0.056   271.56
2028.91    0.057   272.39
2029.01    0.059   273.19
2029.11    0.059   273.97
2029.21    0.060   274.72
2029.31    0.061   275.45
2029.41    0.061   276.17
2029.51    0.062   276.88
2029.61    0.062   277.59
2029.71    0.062   278.30
2029.81    0.061   279.01
2029.91    0.061   279.73
2030.01    0.060   280.46
2030.11    0.060   281.21
2030.21    0.059   281.98
2030.31    0.058   282.77
2030.41    0.056   283.60
2030.51    0.055   284.46
2030.61    0.054   285.37
2030.71    0.052   286.33
2030.81    0.050   287.35
2030.91    0.049   288.44
2031.01    0.047   289.62
2031.11    0.045   290.90
2031.21    0.043   292.30
2031.31    0.041   293.84
2031.41    0.039   295.55
2031.51    0.036   297.47
2031.61    0.034   299.63
2031.71    0.032   302.10
2031.81    0.030   304.95
2031.91    0.027   308.25
2032.01    0.025   312.13
2032.11    0.023   316.71
2032.21    0.021   322.15
2032.31    0.020   328.62
2032.41    0.018   336.25
2032.51    0.017   345.05



 

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 17:40:33


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