Double Star Calculator - Orbit

Orbital Elements for WRH36
WDS: WRH36 WDS ID/Discoverer
P: 20.340 Orbital period (years)
a: 0.0336 Semi-major axis (arcseconds)
i: 90.65 Inclination (degrees)
Ω: 310.6 Longitude of ascending node (degrees)
T: 1951.200 Epoch of periastron passage (year)
e: 0.5 Eccentricity
ω: 122.0 Longitude of periastron (degrees)
Start-Year: 2014.83 Year
End-Year: 2035.17 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for WRH36
Position: 215639.14+633732.0 Epoch-2000 right ascension and declination
WDS-ID: 21567+6338 WDS designation
Discoverer Code: WRH36 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 208816 HD catalog number
Hipparcos number: 108317 Hipparcos catalog number
V1: 5.4 Magnitude of the primary
V2: . Magnitude of the secondary
Equinox: Equinox
Date: 1958 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Frd1960 Reference

Double Star Orbit for WRH36



WDS 6th Orbit including measures of WRH36

-- 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 WRH36
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.039   310.94
--------------------------
2014.83    0.020   129.91
2014.93    0.019   129.86
2015.03    0.019   129.80
2015.13    0.019   129.75
2015.23    0.018   129.69
2015.33    0.018   129.63
2015.43    0.017   129.56
2015.53    0.017   129.49
2015.63    0.016   129.42
2015.73    0.016   129.34
2015.83    0.015   129.26
2015.93    0.014   129.17
2016.03    0.014   129.07
2016.13    0.013   128.96
2016.23    0.013   128.84
2016.33    0.012   128.71
2016.43    0.011   128.57
2016.53    0.011   128.41
2016.63    0.010   128.23
2016.73    0.009   128.02
2016.83    0.009   127.78
2016.93    0.008   127.50
2017.03    0.007   127.18
2017.13    0.007   126.79
2017.23    0.006   126.31
2017.33    0.005   125.72
2017.43    0.005   124.95
2017.53    0.004   123.93
2017.63    0.003   122.50
2017.73    0.003   120.36
2017.83    0.002   116.78
2017.93    0.001   109.72
2018.03    0.001    90.82
2018.13    0.001    29.45
2018.23    0.001   343.01
2018.33    0.002   329.41
2018.43    0.002   323.76
2018.53    0.003   320.71
2018.63    0.004   318.82
2018.73    0.004   317.54
2018.83    0.005   316.60
2018.93    0.006   315.90
2019.03    0.006   315.34
2019.13    0.007   314.90
2019.23    0.008   314.53
2019.33    0.008   314.22
2019.43    0.009   313.96
2019.53    0.010   313.73
2019.63    0.010   313.53
2019.73    0.011   313.36
2019.83    0.012   313.21
2019.93    0.012   313.07
2020.03    0.013   312.95
2020.13    0.014   312.83
2020.23    0.014   312.73
2020.33    0.015   312.64
2020.43    0.015   312.55
2020.53    0.016   312.47
2020.63    0.017   312.40
2020.73    0.017   312.33
2020.83    0.018   312.27
2020.93    0.019   312.21
2021.03    0.019   312.16
2021.13    0.020   312.11
2021.23    0.020   312.06
2021.33    0.021   312.01
2021.43    0.022   311.97
2021.53    0.022   311.93
2021.63    0.023   311.89
2021.73    0.023   311.85
2021.83    0.024   311.81
2021.93    0.024   311.78
2022.03    0.025   311.75
2022.13    0.025   311.72
2022.23    0.026   311.69
2022.33    0.026   311.66
2022.43    0.027   311.63
2022.53    0.027   311.60
2022.63    0.028   311.58
2022.73    0.028   311.55
2022.83    0.029   311.53
2022.93    0.029   311.51
2023.03    0.030   311.48
2023.13    0.030   311.46
2023.23    0.031   311.44
2023.33    0.031   311.42
2023.43    0.032   311.40
2023.53    0.032   311.38
2023.63    0.032   311.36
2023.73    0.033   311.34
2023.83    0.033   311.32
2023.93    0.034   311.31
2024.03    0.034   311.29
2024.13    0.034   311.27
2024.23    0.035   311.26
2024.33    0.035   311.24
2024.43    0.035   311.22
2024.53    0.036   311.21
2024.63    0.036   311.19
2024.73    0.036   311.18
2024.83    0.036   311.16
2024.93    0.037   311.15
2025.03    0.037   311.13
2025.13    0.037   311.12
2025.23    0.037   311.11
2025.33    0.038   311.09
2025.43    0.038   311.08
2025.53    0.038   311.06
2025.63    0.038   311.05
2025.73    0.038   311.04
2025.83    0.039   311.02
2025.93    0.039   311.01
2026.03    0.039   311.00
2026.13    0.039   310.99
2026.23    0.039   310.97
2026.33    0.039   310.96
2026.43    0.039   310.95
2026.53    0.039   310.93
2026.63    0.039   310.92
2026.73    0.039   310.91
2026.83    0.039   310.90
2026.93    0.039   310.88
2027.03    0.039   310.87
2027.13    0.039   310.86
2027.23    0.039   310.85
2027.33    0.039   310.83
2027.43    0.039   310.82
2027.53    0.039   310.81
2027.63    0.039   310.79
2027.73    0.038   310.78
2027.83    0.038   310.77
2027.93    0.038   310.75
2028.03    0.038   310.74
2028.13    0.038   310.73
2028.23    0.037   310.71
2028.33    0.037   310.70
2028.43    0.037   310.68
2028.53    0.036   310.67
2028.63    0.036   310.65
2028.73    0.035   310.64
2028.83    0.035   310.62
2028.93    0.034   310.61
2029.03    0.034   310.59
2029.13    0.033   310.57
2029.23    0.033   310.55
2029.33    0.032   310.53
2029.43    0.032   310.52
2029.53    0.031   310.49
2029.63    0.030   310.47
2029.73    0.029   310.45
2029.83    0.029   310.43
2029.93    0.028   310.40
2030.03    0.027   310.38
2030.13    0.026   310.35
2030.23    0.025   310.32
2030.33    0.024   310.29
2030.43    0.023   310.25
2030.53    0.022   310.21
2030.63    0.021   310.17
2030.73    0.020   310.12
2030.83    0.018   310.06
2030.93    0.017   310.00
2031.03    0.016   309.93
2031.13    0.014   309.84
2031.23    0.013   309.73
2031.33    0.011   309.59
2031.43    0.010   309.42
2031.53    0.008   309.17
2031.63    0.007   308.80
2031.73    0.005   308.19
2031.83    0.003   306.95
2031.93    0.002   303.00
2032.03    0.000   178.55
2032.13    0.002   136.54
2032.23    0.004   133.64
2032.33    0.005   132.60
2032.43    0.007   132.06
2032.53    0.008   131.72
2032.63    0.010   131.49
2032.73    0.011   131.31
2032.83    0.013   131.18
2032.93    0.014   131.07
2033.03    0.015   130.97
2033.13    0.016   130.89
2033.23    0.017   130.82
2033.33    0.018   130.76
2033.43    0.019   130.70
2033.53    0.019   130.65
2033.63    0.020   130.60
2033.73    0.020   130.55
2033.83    0.021   130.50
2033.93    0.021   130.46
2034.03    0.021   130.41
2034.13    0.021   130.37
2034.23    0.022   130.33
2034.33    0.022   130.29
2034.43    0.021   130.24
2034.53    0.021   130.20
2034.63    0.021   130.16
2034.73    0.021   130.11
2034.83    0.021   130.07
2034.93    0.021   130.02
2035.03    0.020   129.98
2035.13    0.020   129.93






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 18:34:28



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