Double Star Calculator - Orbit

Orbital Elements for RST5493BC
WDS: RST5493BC WDS ID/Discoverer
P: 18.440 Orbital period (years)
a: 0.134 Semi-major axis (arcseconds)
i: 92.1 Inclination (degrees)
Ω: 91.3 Longitude of ascending node (degrees)
T: 2019.530 Epoch of periastron passage (year)
e: 0.831 Eccentricity
ω: 213.6 Longitude of periastron (degrees)
Start-Year: 2015.78 Year
End-Year: 2034.22 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for RST5493BC
Position: 002152.67-230023.2 Epoch-2000 right ascension and declination
WDS-ID: 00219-2300 WDS designation
Discoverer Code: RST5493BC Discover designation and components
ADS number: 302 Aitken Double Star catalog
HD number: 1766 HD catalog number
Hipparcos number: 1732 Hipparcos catalog number
V1: 9.9 Magnitude of the primary
V2: 9.9 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2021 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Tok2021c Reference

Double Star Orbit for RST5493BC



WDS 6th Orbit including measures of RST5493BC

-- 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 RST5493BC
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.211    90.27
--------------------------
2015.78    0.105    88.29
2015.88    0.102    88.23
2015.98    0.099    88.16
2016.08    0.096    88.08
2016.18    0.093    88.00
2016.28    0.089    87.91
2016.38    0.086    87.82
2016.48    0.083    87.72
2016.58    0.080    87.61
2016.68    0.076    87.49
2016.78    0.073    87.36
2016.88    0.069    87.22
2016.98    0.066    87.07
2017.08    0.062    86.89
2017.18    0.058    86.69
2017.28    0.055    86.47
2017.38    0.051    86.21
2017.48    0.047    85.91
2017.58    0.043    85.56
2017.68    0.039    85.14
2017.78    0.035    84.62
2017.88    0.031    83.97
2017.98    0.027    83.12
2018.08    0.023    81.96
2018.18    0.019    80.27
2018.28    0.014    77.59
2018.38    0.010    72.63
2018.48    0.006    60.71
2018.58    0.003    15.52
2018.68    0.005   306.66
2018.78    0.008   287.77
2018.88    0.013   281.07
2018.98    0.017   277.68
2019.08    0.020   275.60
2019.18    0.024   274.13
2019.28    0.026   272.98
2019.38    0.026   271.93
2019.48    0.022   270.74
2019.58    0.014   268.59
2019.68    0.003   252.18
2019.78    0.009    98.65
2019.88    0.020    94.83
2019.98    0.031    93.70
2020.08    0.040    93.12
2020.18    0.049    92.76
2020.28    0.057    92.51
2020.38    0.065    92.31
2020.48    0.072    92.16
2020.58    0.079    92.03
2020.68    0.085    91.93
2020.78    0.091    91.83
2020.88    0.096    91.75
2020.98    0.102    91.68
2021.08    0.107    91.61
2021.18    0.112    91.55
2021.28    0.116    91.50
2021.38    0.121    91.45
2021.48    0.125    91.40
2021.58    0.129    91.36
2021.68    0.133    91.32
2021.78    0.137    91.28
2021.88    0.141    91.24
2021.98    0.144    91.20
2022.08    0.147    91.17
2022.18    0.151    91.14
2022.28    0.154    91.11
2022.38    0.157    91.08
2022.48    0.159    91.05
2022.58    0.162    91.02
2022.68    0.165    90.99
2022.78    0.167    90.97
2022.88    0.170    90.94
2022.98    0.172    90.92
2023.08    0.174    90.90
2023.18    0.177    90.87
2023.28    0.179    90.85
2023.38    0.181    90.83
2023.48    0.183    90.81
2023.58    0.185    90.78
2023.68    0.186    90.76
2023.78    0.188    90.74
2023.88    0.190    90.72
2023.98    0.191    90.70
2024.08    0.193    90.68
2024.18    0.194    90.67
2024.28    0.196    90.65
2024.38    0.197    90.63
2024.48    0.198    90.61
2024.58    0.199    90.59
2024.68    0.200    90.57
2024.78    0.201    90.56
2024.88    0.202    90.54
2024.98    0.203    90.52
2025.08    0.204    90.50
2025.18    0.205    90.49
2025.28    0.206    90.47
2025.38    0.207    90.45
2025.48    0.207    90.44
2025.58    0.208    90.42
2025.68    0.209    90.40
2025.78    0.209    90.39
2025.88    0.210    90.37
2025.98    0.210    90.35
2026.08    0.210    90.34
2026.18    0.211    90.32
2026.28    0.211    90.31
2026.38    0.211    90.29
2026.48    0.211    90.27
2026.58    0.212    90.26
2026.68    0.212    90.24
2026.78    0.212    90.23
2026.88    0.212    90.21
2026.98    0.212    90.19
2027.08    0.212    90.18
2027.18    0.212    90.16
2027.28    0.211    90.15
2027.38    0.211    90.13
2027.48    0.211    90.11
2027.58    0.211    90.10
2027.68    0.210    90.08
2027.78    0.210    90.07
2027.88    0.210    90.05
2027.98    0.209    90.03
2028.08    0.209    90.02
2028.18    0.208    90.00
2028.28    0.208    89.98
2028.38    0.207    89.97
2028.48    0.206    89.95
2028.58    0.206    89.93
2028.68    0.205    89.92
2028.78    0.204    89.90
2028.88    0.203    89.88
2028.98    0.203    89.87
2029.08    0.202    89.85
2029.18    0.201    89.83
2029.28    0.200    89.81
2029.38    0.199    89.79
2029.48    0.198    89.78
2029.58    0.197    89.76
2029.68    0.196    89.74
2029.78    0.194    89.72
2029.88    0.193    89.70
2029.98    0.192    89.68
2030.08    0.191    89.66
2030.18    0.190    89.64
2030.28    0.188    89.62
2030.38    0.187    89.60
2030.48    0.185    89.58
2030.58    0.184    89.56
2030.68    0.183    89.54
2030.78    0.181    89.52
2030.88    0.179    89.50
2030.98    0.178    89.47
2031.08    0.176    89.45
2031.18    0.175    89.43
2031.28    0.173    89.40
2031.38    0.171    89.38
2031.48    0.169    89.36
2031.58    0.168    89.33
2031.68    0.166    89.30
2031.78    0.164    89.28
2031.88    0.162    89.25
2031.98    0.160    89.22
2032.08    0.158    89.20
2032.18    0.156    89.17
2032.28    0.154    89.14
2032.38    0.152    89.11
2032.48    0.149    89.07
2032.58    0.147    89.04
2032.68    0.145    89.01
2032.78    0.143    88.97
2032.88    0.140    88.94
2032.98    0.138    88.90
2033.08    0.135    88.86
2033.18    0.133    88.82
2033.28    0.130    88.78
2033.38    0.128    88.74
2033.48    0.125    88.69
2033.58    0.123    88.65
2033.68    0.120    88.60
2033.78    0.117    88.55
2033.88    0.115    88.50
2033.98    0.112    88.44
2034.08    0.109    88.38
2034.18    0.106    88.32






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 14:38:42



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