Double Star Calculator - Orbit

Orbital Elements for BU395

WDS:	BU395	WDS ID/Discoverer
P:	25.020	Orbital period (years)
a:	0.675	Semi-major axis (arcseconds)
i:	78.6	Inclination (degrees)
Ω:	291.98	Longitude of ascending node (degrees)
T:	1998.780	Epoch of periastron passage (year)
e:	0.218	Eccentricity
ω:	318.1	Longitude of periastron (degrees)
Start-Year:	2012.49	Year
End-Year:	2037.51	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU395
Position:	003720.68-244602.1	Epoch-2000 right ascension and declination
WDS-ID:	00373-2446	WDS designation
Discoverer Code:	BU395	Discover designation and components
ADS number:	520	Aitken Double Star catalog
HD number:	3443	HD catalog number
Hipparcos number:	2941	Hipparcos catalog number
V1:	6.60	Magnitude of the primary
V2:	6.20	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2009	Date of last observation
Orbit grade:	1	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Hrt2010a	Reference

Double Star Orbit for BU395

WDS 6th Orbit including measures of BU395

-- 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 BU395

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.554   295.31
--------------------------
2012.49    0.709   105.34
2012.59    0.715   105.59
2012.69    0.721   105.83
2012.79    0.726   106.08
2012.89    0.731   106.31
2012.99    0.736   106.55
2013.09    0.741   106.78
2013.19    0.745   107.01
2013.29    0.749   107.24
2013.39    0.753   107.46
2013.49    0.757   107.68
2013.59    0.760   107.90
2013.69    0.763   108.12
2013.79    0.766   108.34
2013.89    0.768   108.55
2013.99    0.770   108.77
2014.09    0.772   108.98
2014.19    0.774   109.19
2014.29    0.775   109.40
2014.39    0.776   109.61
2014.49    0.777   109.82
2014.59    0.777   110.03
2014.69    0.778   110.24
2014.79    0.778   110.45
2014.89    0.777   110.66
2014.99    0.776   110.87
2015.09    0.775   111.08
2015.19    0.774   111.29
2015.29    0.772   111.50
2015.39    0.770   111.71
2015.49    0.768   111.93
2015.59    0.765   112.14
2015.69    0.763   112.36
2015.79    0.759   112.58
2015.89    0.756   112.80
2015.99    0.752   113.02
2016.09    0.748   113.24
2016.19    0.743   113.47
2016.29    0.738   113.70
2016.39    0.733   113.94
2016.49    0.727   114.17
2016.59    0.721   114.41
2016.69    0.715   114.66
2016.79    0.709   114.91
2016.89    0.702   115.16
2016.99    0.695   115.42
2017.09    0.687   115.69
2017.19    0.679   115.96
2017.29    0.671   116.24
2017.39    0.662   116.52
2017.49    0.653   116.81
2017.59    0.644   117.11
2017.69    0.634   117.42
2017.79    0.624   117.74
2017.89    0.614   118.07
2017.99    0.604   118.41
2018.09    0.593   118.77
2018.19    0.581   119.13
2018.29    0.570   119.52
2018.39    0.558   119.91
2018.49    0.545   120.33
2018.59    0.533   120.76
2018.69    0.520   121.22
2018.79    0.507   121.70
2018.89    0.493   122.21
2018.99    0.479   122.74
2019.09    0.465   123.31
2019.19    0.451   123.91
2019.29    0.436   124.55
2019.39    0.421   125.24
2019.49    0.406   125.98
2019.59    0.391   126.78
2019.69    0.375   127.64
2019.79    0.359   128.58
2019.89    0.343   129.60
2019.99    0.327   130.73
2020.09    0.311   131.97
2020.19    0.295   133.35
2020.29    0.278   134.89
2020.39    0.262   136.63
2020.49    0.245   138.60
2020.59    0.229   140.85
2020.69    0.213   143.45
2020.79    0.197   146.47
2020.89    0.182   150.01
2020.99    0.167   154.18
2021.09    0.153   159.14
2021.19    0.140   165.04
2021.29    0.129   172.02
2021.39    0.121   180.15
2021.49    0.114   189.37
2021.59    0.111   199.37
2021.69    0.111   209.63
2021.79    0.115   219.53
2021.89    0.122   228.58
2021.99    0.131   236.52
2022.09    0.142   243.31
2022.19    0.155   249.05
2022.29    0.169   253.87
2022.39    0.184   257.94
2022.49    0.199   261.40
2022.59    0.215   264.36
2022.69    0.231   266.91
2022.79    0.247   269.13
2022.89    0.263   271.08
2022.99    0.279   272.81
2023.09    0.295   274.35
2023.19    0.310   275.73
2023.29    0.326   276.98
2023.39    0.341   278.12
2023.49    0.356   279.16
2023.59    0.370   280.13
2023.69    0.384   281.02
2023.79    0.398   281.84
2023.89    0.411   282.62
2023.99    0.424   283.34
2024.09    0.436   284.03
2024.19    0.448   284.68
2024.29    0.459   285.29
2024.39    0.469   285.88
2024.49    0.479   286.44
2024.59    0.489   286.98
2024.69    0.498   287.50
2024.79    0.506   288.00
2024.89    0.514   288.49
2024.99    0.521   288.96
2025.09    0.527   289.42
2025.19    0.533   289.87
2025.29    0.538   290.31
2025.39    0.543   290.75
2025.49    0.547   291.17
2025.59    0.551   291.59
2025.69    0.553   292.01
2025.79    0.556   292.42
2025.89    0.557   292.83
2025.99    0.558   293.23
2026.09    0.559   293.64
2026.19    0.558   294.04
2026.29    0.558   294.45
2026.39    0.556   294.86
2026.49    0.555   295.27
2026.59    0.552   295.68
2026.69    0.549   296.10
2026.79    0.546   296.52
2026.89    0.542   296.95
2026.99    0.538   297.38
2027.09    0.533   297.82
2027.19    0.528   298.27
2027.29    0.522   298.73
2027.39    0.516   299.20
2027.49    0.509   299.68
2027.59    0.502   300.18
2027.69    0.495   300.68
2027.79    0.487   301.21
2027.89    0.479   301.75
2027.99    0.471   302.31
2028.09    0.462   302.89
2028.19    0.453   303.50
2028.29    0.444   304.13
2028.39    0.434   304.78
2028.49    0.424   305.47
2028.59    0.414   306.19
2028.69    0.404   306.94
2028.79    0.394   307.74
2028.89    0.383   308.58
2028.99    0.372   309.47
2029.09    0.361   310.41
2029.19    0.350   311.41
2029.29    0.339   312.48
2029.39    0.327   313.62
2029.49    0.316   314.84
2029.59    0.305   316.15
2029.69    0.293   317.57
2029.79    0.282   319.09
2029.89    0.271   320.75
2029.99    0.259   322.55
2030.09    0.248   324.52
2030.19    0.237   326.66
2030.29    0.227   329.01
2030.39    0.216   331.59
2030.49    0.206   334.43
2030.59    0.197   337.54
2030.69    0.188   340.97
2030.79    0.179   344.73
2030.89    0.172   348.83
2030.99    0.165   353.30
2031.09    0.159   358.12
2031.19    0.155     3.26
2031.29    0.151     8.67
2031.39    0.149    14.28
2031.49    0.149    19.99
2031.59    0.149    25.69
2031.69    0.152    31.28
2031.79    0.155    36.67
2031.89    0.160    41.79
2031.99    0.166    46.57
2032.09    0.172    51.00
2032.19    0.180    55.07
2032.29    0.189    58.80
2032.39    0.198    62.19
2032.49    0.207    65.27
2032.59    0.218    68.07
2032.69    0.228    70.62
2032.79    0.239    72.94
2032.89    0.250    75.05
2032.99    0.261    76.99
2033.09    0.273    78.76
2033.19    0.285    80.39
2033.29    0.296    81.89
2033.39    0.308    83.28
2033.49    0.320    84.56
2033.59    0.332    85.75
2033.69    0.344    86.86
2033.79    0.355    87.90
2033.89    0.367    88.87
2033.99    0.379    89.77
2034.09    0.391    90.63
2034.19    0.403    91.43
2034.29    0.414    92.19
2034.39    0.426    92.91
2034.49    0.437    93.59
2034.59    0.448    94.23
2034.69    0.460    94.84
2034.79    0.471    95.43
2034.89    0.482    95.99
2034.99    0.493    96.52
2035.09    0.503    97.03
2035.19    0.514    97.52
2035.29    0.524    97.99
2035.39    0.535    98.44
2035.49    0.545    98.87
2035.59    0.555    99.29
2035.69    0.565    99.69
2035.79    0.574   100.08
2035.89    0.584   100.46
2035.99    0.593   100.83
2036.09    0.602   101.18
2036.19    0.611   101.52
2036.29    0.620   101.86
2036.39    0.628   102.18
2036.49    0.637   102.50
2036.59    0.645   102.81
2036.69    0.653   103.11
2036.79    0.660   103.40
2036.89    0.668   103.69
2036.99    0.675   103.97
2037.09    0.682   104.24
2037.19    0.689   104.51
2037.29    0.696   104.78
2037.39    0.702   105.03
2037.49    0.708   105.29

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 14:41:43