Double Star Calculator - Orbit

Orbital Elements for WNO49BA,BB

WDS:	WNO49BA,BB	WDS ID/Discoverer
P:	20.500	Orbital period (years)
a:	0.656	Semi-major axis (arcseconds)
i:	40.0	Inclination (degrees)
Ω:	167.0	Longitude of ascending node (degrees)
T:	1971.200	Epoch of periastron passage (year)
e:	0.18	Eccentricity
ω:	25.0	Longitude of periastron (degrees)
Start-Year:	2014.75	Year
End-Year:	2035.25	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for WNO49BA,BB
Position:	073047.26+481022.6	Epoch-2000 right ascension and declination
WDS-ID:	07307+4813	WDS designation
Discoverer Code:	WNO49BA,BB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	15.5	Magnitude of the primary
V2:	15.5	Magnitude of the secondary
Equinox:		Equinox
Date:	1980	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:	Hrr1981	Reference

Double Star Orbit for WNO49BA,BB

WDS 6th Orbit including measures of WNO49BA,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 WNO49BA,BB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.553    61.78
--------------------------
2014.75    0.449   252.81
2014.85    0.451   255.63
2014.95    0.453   258.42
2015.05    0.456   261.17
2015.15    0.460   263.88
2015.25    0.464   266.56
2015.35    0.468   269.18
2015.45    0.473   271.75
2015.55    0.478   274.27
2015.65    0.484   276.74
2015.75    0.489   279.14
2015.85    0.496   281.49
2015.95    0.502   283.78
2016.05    0.509   286.01
2016.15    0.515   288.18
2016.25    0.522   290.30
2016.35    0.530   292.36
2016.45    0.537   294.36
2016.55    0.544   296.31
2016.65    0.552   298.20
2016.75    0.560   300.04
2016.85    0.567   301.84
2016.95    0.575   303.58
2017.05    0.583   305.28
2017.15    0.590   306.94
2017.25    0.598   308.56
2017.35    0.605   310.13
2017.45    0.613   311.66
2017.55    0.620   313.16
2017.65    0.627   314.63
2017.75    0.635   316.06
2017.85    0.642   317.46
2017.95    0.649   318.82
2018.05    0.655   320.16
2018.15    0.662   321.48
2018.25    0.668   322.76
2018.35    0.675   324.03
2018.45    0.681   325.27
2018.55    0.687   326.48
2018.65    0.692   327.68
2018.75    0.698   328.86
2018.85    0.703   330.02
2018.95    0.708   331.16
2019.05    0.713   332.29
2019.15    0.718   333.40
2019.25    0.722   334.50
2019.35    0.727   335.58
2019.45    0.731   336.66
2019.55    0.735   337.72
2019.65    0.738   338.77
2019.75    0.741   339.81
2019.85    0.745   340.84
2019.95    0.747   341.86
2020.05    0.750   342.88
2020.15    0.752   343.89
2020.25    0.755   344.89
2020.35    0.757   345.89
2020.45    0.758   346.88
2020.55    0.760   347.87
2020.65    0.761   348.85
2020.75    0.762   349.83
2020.85    0.763   350.81
2020.95    0.763   351.79
2021.05    0.764   352.77
2021.15    0.764   353.75
2021.25    0.764   354.72
2021.35    0.763   355.70
2021.45    0.763   356.68
2021.55    0.762   357.66
2021.65    0.761   358.64
2021.75    0.759   359.63
2021.85    0.758     0.62
2021.95    0.756     1.61
2022.05    0.754     2.61
2022.15    0.752     3.61
2022.25    0.750     4.62
2022.35    0.748     5.63
2022.45    0.745     6.66
2022.55    0.742     7.69
2022.65    0.739     8.73
2022.75    0.736     9.77
2022.85    0.732    10.83
2022.95    0.729    11.90
2023.05    0.725    12.97
2023.15    0.721    14.06
2023.25    0.717    15.16
2023.35    0.713    16.27
2023.45    0.709    17.40
2023.55    0.704    18.54
2023.65    0.700    19.70
2023.75    0.695    20.87
2023.85    0.690    22.05
2023.95    0.685    23.26
2024.05    0.680    24.48
2024.15    0.675    25.72
2024.25    0.670    26.98
2024.35    0.665    28.25
2024.45    0.660    29.55
2024.55    0.654    30.87
2024.65    0.649    32.22
2024.75    0.643    33.58
2024.85    0.638    34.97
2024.95    0.632    36.38
2025.05    0.627    37.82
2025.15    0.621    39.28
2025.25    0.616    40.77
2025.35    0.610    42.29
2025.45    0.605    43.83
2025.55    0.599    45.40
2025.65    0.594    47.00
2025.75    0.589    48.63
2025.85    0.584    50.29
2025.95    0.579    51.97
2026.05    0.574    53.69
2026.15    0.569    55.43
2026.25    0.564    57.21
2026.35    0.559    59.02
2026.45    0.555    60.85
2026.55    0.551    62.71
2026.65    0.547    64.60
2026.75    0.543    66.52
2026.85    0.539    68.47
2026.95    0.536    70.44
2027.05    0.533    72.43
2027.15    0.530    74.45
2027.25    0.527    76.49
2027.35    0.524    78.55
2027.45    0.522    80.63
2027.55    0.520    82.73
2027.65    0.518    84.84
2027.75    0.517    86.96
2027.85    0.516    89.10
2027.95    0.515    91.25
2028.05    0.514    93.40
2028.15    0.514    95.55
2028.25    0.514    97.71
2028.35    0.514    99.87
2028.45    0.514   102.03
2028.55    0.514   104.18
2028.65    0.515   106.33
2028.75    0.516   108.48
2028.85    0.517   110.61
2028.95    0.518   112.73
2029.05    0.520   114.85
2029.15    0.521   116.95
2029.25    0.523   119.04
2029.35    0.525   121.11
2029.45    0.527   123.18
2029.55    0.528   125.22
2029.65    0.530   127.25
2029.75    0.532   129.27
2029.85    0.534   131.27
2029.95    0.536   133.26
2030.05    0.538   135.23
2030.15    0.540   137.19
2030.25    0.542   139.14
2030.35    0.543   141.08
2030.45    0.545   143.00
2030.55    0.546   144.92
2030.65    0.547   146.82
2030.75    0.548   148.72
2030.85    0.549   150.61
2030.95    0.550   152.50
2031.05    0.550   154.38
2031.15    0.550   156.26
2031.25    0.550   158.15
2031.35    0.550   160.03
2031.45    0.549   161.92
2031.55    0.548   163.81
2031.65    0.547   165.71
2031.75    0.545   167.62
2031.85    0.543   169.55
2031.95    0.541   171.48
2032.05    0.539   173.43
2032.15    0.536   175.40
2032.25    0.534   177.39
2032.35    0.530   179.40
2032.45    0.527   181.44
2032.55    0.523   183.51
2032.65    0.520   185.60
2032.75    0.516   187.72
2032.85    0.512   189.88
2032.95    0.507   192.08
2033.05    0.503   194.31
2033.15    0.499   196.58
2033.25    0.494   198.89
2033.35    0.490   201.25
2033.45    0.485   203.64
2033.55    0.481   206.09
2033.65    0.476   208.57
2033.75    0.472   211.11
2033.85    0.468   213.68
2033.95    0.464   216.30
2034.05    0.461   218.96
2034.15    0.458   221.66
2034.25    0.455   224.40
2034.35    0.452   227.17
2034.45    0.450   229.97
2034.55    0.448   232.80
2034.65    0.447   235.65
2034.75    0.446   238.51
2034.85    0.445   241.37
2034.95    0.445   244.25
2035.05    0.446   247.11
2035.15    0.447   249.97

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 15:58:10