Double Star Calculator - Orbit

Orbital Elements for BWL53BA,BB

WDS:	BWL53BA,BB	WDS ID/Discoverer
P:	20.000	Orbital period (years)
a:	0.1529	Semi-major axis (arcseconds)
i:	55.0	Inclination (degrees)
Ω:	33.6	Longitude of ascending node (degrees)
T:	2025.372	Epoch of periastron passage (year)
e:	0.522	Eccentricity
ω:	45.6	Longitude of periastron (degrees)
Start-Year:	2015.0	Year
End-Year:	2035.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BWL53BA,BB
Position:	195602.94-320718.7	Epoch-2000 right ascension and declination
WDS-ID:	19561-3208	WDS designation
Discoverer Code:	BWL53BA,BB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	13.3	Magnitude of the primary
V2:	14.3	Magnitude of the secondary
Equinox:		Equinox
Date:		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:	Tok2024c	Reference

Double Star Orbit for BWL53BA,BB

WDS 6th Orbit including measures of BWL53BA,BB

-- 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 BWL53BA,BB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.058   156.67
--------------------------
2015.00    0.193   241.85
2015.10    0.192   242.41
2015.20    0.191   242.97
2015.30    0.189   243.54
2015.40    0.188   244.12
2015.50    0.187   244.70
2015.60    0.186   245.29
2015.70    0.185   245.89
2015.80    0.184   246.50
2015.90    0.182   247.11
2016.00    0.181   247.74
2016.10    0.180   248.37
2016.20    0.178   249.01
2016.30    0.177   249.66
2016.40    0.176   250.33
2016.50    0.174   251.00
2016.60    0.173   251.68
2016.70    0.171   252.38
2016.80    0.170   253.09
2016.90    0.168   253.81
2017.00    0.167   254.55
2017.10    0.165   255.29
2017.20    0.163   256.06
2017.30    0.162   256.84
2017.40    0.160   257.63
2017.50    0.159   258.44
2017.60    0.157   259.27
2017.70    0.155   260.12
2017.80    0.153   260.98
2017.90    0.152   261.86
2018.00    0.150   262.77
2018.10    0.148   263.69
2018.20    0.147   264.64
2018.30    0.145   265.61
2018.40    0.143   266.61
2018.50    0.141   267.63
2018.60    0.139   268.67
2018.70    0.138   269.74
2018.80    0.136   270.84
2018.90    0.134   271.97
2019.00    0.132   273.13
2019.10    0.131   274.32
2019.20    0.129   275.55
2019.30    0.127   276.80
2019.40    0.125   278.10
2019.50    0.124   279.42
2019.60    0.122   280.79
2019.70    0.120   282.19
2019.80    0.119   283.64
2019.90    0.117   285.12
2020.00    0.115   286.65
2020.10    0.114   288.22
2020.20    0.112   289.83
2020.30    0.111   291.49
2020.40    0.109   293.19
2020.50    0.108   294.94
2020.60    0.106   296.74
2020.70    0.105   298.58
2020.80    0.104   300.47
2020.90    0.102   302.41
2021.00    0.101   304.39
2021.10    0.100   306.42
2021.20    0.099   308.50
2021.30    0.098   310.62
2021.40    0.097   312.78
2021.50    0.096   314.98
2021.60    0.096   317.21
2021.70    0.095   319.49
2021.80    0.094   321.80
2021.90    0.094   324.14
2022.00    0.093   326.50
2022.10    0.093   328.89
2022.20    0.092   331.30
2022.30    0.092   333.73
2022.40    0.092   336.18
2022.50    0.091   338.63
2022.60    0.091   341.09
2022.70    0.091   343.56
2022.80    0.091   346.04
2022.90    0.091   348.51
2023.00    0.091   350.99
2023.10    0.091   353.46
2023.20    0.091   355.93
2023.30    0.091   358.41
2023.40    0.091     0.88
2023.50    0.091     3.35
2023.60    0.091     5.83
2023.70    0.091     8.32
2023.80    0.091    10.82
2023.90    0.090    13.33
2024.00    0.090    15.88
2024.10    0.089    18.46
2024.20    0.088    21.08
2024.30    0.087    23.77
2024.40    0.086    26.52
2024.50    0.084    29.38
2024.60    0.082    32.35
2024.70    0.080    35.46
2024.80    0.078    38.76
2024.90    0.075    42.29
2025.00    0.072    46.09
2025.10    0.069    50.25
2025.20    0.065    54.82
2025.30    0.062    59.91
2025.40    0.058    65.63
2025.50    0.055    72.07
2025.60    0.052    79.34
2025.70    0.049    87.47
2025.80    0.047    96.40
2025.90    0.046   105.94
2026.00    0.046   115.74
2026.10    0.047   125.39
2026.20    0.049   134.50
2026.30    0.051   142.81
2026.40    0.055   150.20
2026.50    0.058   156.67
2026.60    0.063   162.31
2026.70    0.067   167.21
2026.80    0.072   171.48
2026.90    0.077   175.23
2027.00    0.081   178.54
2027.10    0.086   181.48
2027.20    0.091   184.11
2027.30    0.096   186.48
2027.40    0.100   188.64
2027.50    0.105   190.60
2027.60    0.109   192.41
2027.70    0.113   194.07
2027.80    0.118   195.61
2027.90    0.122   197.05
2028.00    0.126   198.40
2028.10    0.129   199.67
2028.20    0.133   200.86
2028.30    0.137   201.99
2028.40    0.140   203.07
2028.50    0.144   204.09
2028.60    0.147   205.07
2028.70    0.150   206.00
2028.80    0.153   206.90
2028.90    0.156   207.76
2029.00    0.159   208.59
2029.10    0.161   209.40
2029.20    0.164   210.17
2029.30    0.167   210.93
2029.40    0.169   211.66
2029.50    0.171   212.37
2029.60    0.174   213.06
2029.70    0.176   213.74
2029.80    0.178   214.39
2029.90    0.180   215.04
2030.00    0.182   215.67
2030.10    0.183   216.29
2030.20    0.185   216.90
2030.30    0.187   217.49
2030.40    0.188   218.08
2030.50    0.190   218.66
2030.60    0.191   219.23
2030.70    0.192   219.79
2030.80    0.193   220.34
2030.90    0.195   220.89
2031.00    0.196   221.43
2031.10    0.197   221.96
2031.20    0.198   222.49
2031.30    0.199   223.02
2031.40    0.199   223.54
2031.50    0.200   224.05
2031.60    0.201   224.56
2031.70    0.201   225.07
2031.80    0.202   225.58
2031.90    0.202   226.08
2032.00    0.203   226.58
2032.10    0.203   227.08
2032.20    0.204   227.58
2032.30    0.204   228.08
2032.40    0.204   228.57
2032.50    0.204   229.07
2032.60    0.204   229.56
2032.70    0.204   230.05
2032.80    0.204   230.54
2032.90    0.204   231.04
2033.00    0.204   231.53
2033.10    0.204   232.02
2033.20    0.204   232.52
2033.30    0.204   233.02
2033.40    0.203   233.51
2033.50    0.203   234.01
2033.60    0.203   234.51
2033.70    0.202   235.02
2033.80    0.202   235.52
2033.90    0.201   236.03
2034.00    0.201   236.54
2034.10    0.200   237.05
2034.20    0.199   237.57
2034.30    0.199   238.09
2034.40    0.198   238.61
2034.50    0.197   239.14
2034.60    0.196   239.67
2034.70    0.195   240.21
2034.80    0.194   240.75
2034.90    0.194   241.30

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 18:10:22