Double Star Calculator - Orbit

Orbital Elements for BOY5EA,EB

WDS:	BOY5EA,EB	WDS ID/Discoverer
P:	15.650	Orbital period (years)
a:	0.13	Semi-major axis (arcseconds)
i:	102.9	Inclination (degrees)
Ω:	101.06	Longitude of ascending node (degrees)
T:	2029.639	Epoch of periastron passage (year)
e:	0.106	Eccentricity
ω:	348.0	Longitude of periastron (degrees)
Start-Year:	2017.175	Year
End-Year:	2032.825	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BOY5EA,EB
Position:	111225.67+354813.2	Epoch-2000 right ascension and declination
WDS-ID:	11125+3549	WDS designation
Discoverer Code:	BOY5EA,EB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	18.58r	Magnitude of the primary
V2:	19.65r	Magnitude of the secondary
Equinox:		Equinox
Date:	2014	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:	Dup2017	Reference

Double Star Orbit for BOY5EA,EB

WDS 6th Orbit including measures of BOY5EA,EB

-- 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 BOY5EA,EB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.031   216.92
--------------------------
2017.17    0.046    64.42
2017.27    0.042    59.93
2017.37    0.039    54.63
2017.47    0.036    48.39
2017.57    0.033    41.08
2017.67    0.031    32.70
2017.77    0.030    23.38
2017.87    0.029    13.48
2017.97    0.030     3.52
2018.07    0.031   354.05
2018.17    0.033   345.46
2018.27    0.035   337.95
2018.37    0.038   331.51
2018.47    0.041   326.04
2018.57    0.045   321.41
2018.67    0.049   317.48
2018.77    0.053   314.11
2018.87    0.057   311.22
2018.97    0.061   308.70
2019.07    0.065   306.50
2019.17    0.069   304.55
2019.27    0.073   302.82
2019.37    0.077   301.27
2019.47    0.081   299.87
2019.57    0.084   298.60
2019.67    0.088   297.44
2019.77    0.092   296.37
2019.87    0.095   295.38
2019.97    0.099   294.47
2020.07    0.102   293.62
2020.17    0.106   292.82
2020.27    0.109   292.07
2020.37    0.112   291.36
2020.47    0.115   290.69
2020.57    0.118   290.05
2020.67    0.120   289.44
2020.77    0.123   288.86
2020.87    0.125   288.30
2020.97    0.128   287.76
2021.07    0.130   287.23
2021.17    0.132   286.73
2021.27    0.134   286.24
2021.37    0.135   285.76
2021.47    0.137   285.29
2021.57    0.138   284.84
2021.67    0.139   284.39
2021.77    0.140   283.95
2021.87    0.141   283.51
2021.97    0.142   283.08
2022.07    0.143   282.66
2022.17    0.143   282.23
2022.27    0.143   281.81
2022.37    0.143   281.39
2022.47    0.143   280.98
2022.57    0.143   280.55
2022.67    0.143   280.13
2022.77    0.142   279.71
2022.87    0.141   279.28
2022.97    0.141   278.84
2023.07    0.140   278.40
2023.17    0.138   277.96
2023.27    0.137   277.50
2023.37    0.135   277.04
2023.47    0.134   276.56
2023.57    0.132   276.07
2023.67    0.130   275.57
2023.77    0.128   275.05
2023.87    0.125   274.51
2023.97    0.123   273.95
2024.07    0.120   273.36
2024.17    0.117   272.75
2024.27    0.115   272.11
2024.37    0.112   271.44
2024.47    0.108   270.72
2024.57    0.105   269.96
2024.67    0.102   269.16
2024.77    0.098   268.29
2024.87    0.094   267.36
2024.97    0.091   266.35
2025.07    0.087   265.25
2025.17    0.083   264.05
2025.27    0.079   262.73
2025.37    0.075   261.27
2025.47    0.071   259.63
2025.57    0.066   257.78
2025.67    0.062   255.69
2025.77    0.058   253.29
2025.87    0.054   250.51
2025.97    0.050   247.26
2026.07    0.045   243.43
2026.17    0.042   238.87
2026.27    0.038   233.41
2026.37    0.035   226.86
2026.47    0.032   219.07
2026.57    0.030   209.98
2026.67    0.028   199.78
2026.77    0.028   188.92
2026.87    0.029   178.12
2026.97    0.030   168.05
2027.07    0.032   159.14
2027.17    0.035   151.53
2027.27    0.038   145.14
2027.37    0.042   139.81
2027.47    0.046   135.35
2027.57    0.050   131.59
2027.67    0.054   128.39
2027.77    0.058   125.65
2027.87    0.062   123.27
2027.97    0.066   121.18
2028.07    0.070   119.34
2028.17    0.074   117.69
2028.27    0.078   116.21
2028.37    0.082   114.86
2028.47    0.086   113.63
2028.57    0.089   112.50
2028.67    0.092   111.45
2028.77    0.095   110.47
2028.87    0.098   109.55
2028.97    0.101   108.68
2029.07    0.104   107.86
2029.17    0.106   107.07
2029.27    0.108   106.32
2029.37    0.110   105.59
2029.47    0.112   104.89
2029.57    0.113   104.21
2029.67    0.114   103.54
2029.77    0.115   102.88
2029.87    0.116   102.24
2029.97    0.116   101.60
2030.07    0.116   100.96
2030.17    0.116   100.32
2030.27    0.116    99.68
2030.37    0.116    99.04
2030.47    0.115    98.39
2030.57    0.114    97.73
2030.67    0.113    97.06
2030.77    0.111    96.37
2030.87    0.109    95.66
2030.97    0.107    94.92
2031.07    0.105    94.16
2031.17    0.103    93.37
2031.27    0.100    92.53
2031.37    0.098    91.66
2031.47    0.095    90.73
2031.57    0.092    89.74
2031.67    0.089    88.68
2031.77    0.085    87.54
2031.87    0.082    86.30
2031.97    0.078    84.95
2032.07    0.075    83.47
2032.17    0.071    81.84
2032.27    0.067    80.01
2032.37    0.063    77.97
2032.47    0.059    75.65
2032.57    0.055    73.00
2032.67    0.051    69.95
2032.77    0.048    66.41

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 16:34:41