Double Star Calculator - Orbit

Orbital Elements for BU101

WDS:	BU101	WDS ID/Discoverer
P:	23.330	Orbital period (years)
a:	0.6179	Semi-major axis (arcseconds)
i:	80.82	Inclination (degrees)
Ω:	282.65	Longitude of ascending node (degrees)
T:	1985.923	Epoch of periastron passage (year)
e:	0.7647	Eccentricity
ω:	253.64	Longitude of periastron (degrees)
Start-Year:	2013.335	Year
End-Year:	2036.665	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU101
Position:	075146.31-135352.8	Epoch-2000 right ascension and declination
WDS-ID:	07518-1354	WDS designation
Discoverer Code:	BU101	Discover designation and components
ADS number:	6420	Aitken Double Star catalog
HD number:	64096	HD catalog number
Hipparcos number:	38382	Hipparcos catalog number
V1:	5.61	Magnitude of the primary
V2:	6.49	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2012	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:	Tok2012b	Reference

Double Star Orbit for BU101

WDS 6th Orbit including measures of BU101

-- 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 BU101

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.157    34.82
--------------------------
2013.34    0.553   290.96
2013.43    0.555   291.16
2013.53    0.556   291.35
2013.63    0.558   291.55
2013.73    0.559   291.74
2013.83    0.560   291.94
2013.93    0.560   292.13
2014.03    0.561   292.32
2014.13    0.561   292.51
2014.23    0.561   292.71
2014.33    0.561   292.90
2014.43    0.561   293.09
2014.53    0.561   293.28
2014.63    0.560   293.48
2014.73    0.560   293.67
2014.83    0.559   293.86
2014.93    0.558   294.06
2015.03    0.557   294.25
2015.13    0.556   294.45
2015.23    0.555   294.64
2015.33    0.553   294.84
2015.43    0.552   295.04
2015.53    0.550   295.24
2015.63    0.548   295.44
2015.73    0.547   295.64
2015.83    0.545   295.84
2015.93    0.543   296.05
2016.03    0.540   296.26
2016.13    0.538   296.46
2016.23    0.536   296.67
2016.33    0.533   296.89
2016.43    0.531   297.10
2016.53    0.528   297.32
2016.63    0.525   297.53
2016.73    0.523   297.76
2016.83    0.520   297.98
2016.93    0.517   298.20
2017.03    0.514   298.43
2017.13    0.511   298.66
2017.23    0.507   298.90
2017.33    0.504   299.13
2017.43    0.501   299.37
2017.53    0.497   299.62
2017.63    0.494   299.86
2017.73    0.490   300.11
2017.83    0.487   300.37
2017.93    0.483   300.63
2018.03    0.479   300.89
2018.13    0.475   301.15
2018.23    0.471   301.42
2018.33    0.467   301.70
2018.43    0.463   301.98
2018.53    0.459   302.26
2018.63    0.455   302.55
2018.73    0.451   302.85
2018.83    0.447   303.15
2018.93    0.443   303.45
2019.03    0.438   303.77
2019.13    0.434   304.08
2019.23    0.429   304.41
2019.33    0.425   304.74
2019.43    0.421   305.08
2019.53    0.416   305.43
2019.63    0.411   305.78
2019.73    0.407   306.14
2019.83    0.402   306.51
2019.93    0.397   306.89
2020.03    0.393   307.28
2020.13    0.388   307.68
2020.23    0.383   308.09
2020.33    0.378   308.50
2020.43    0.373   308.93
2020.53    0.369   309.37
2020.63    0.364   309.82
2020.73    0.359   310.29
2020.83    0.354   310.77
2020.93    0.349   311.26
2021.03    0.344   311.76
2021.13    0.339   312.28
2021.23    0.334   312.82
2021.33    0.329   313.37
2021.43    0.324   313.94
2021.53    0.318   314.53
2021.63    0.313   315.14
2021.73    0.308   315.76
2021.83    0.303   316.41
2021.93    0.298   317.08
2022.03    0.293   317.77
2022.13    0.288   318.49
2022.23    0.283   319.24
2022.33    0.278   320.01
2022.43    0.273   320.81
2022.53    0.268   321.64
2022.63    0.263   322.50
2022.73    0.258   323.39
2022.83    0.253   324.32
2022.93    0.248   325.29
2023.03    0.243   326.29
2023.13    0.238   327.34
2023.23    0.233   328.43
2023.33    0.229   329.57
2023.43    0.224   330.75
2023.53    0.219   331.98
2023.63    0.215   333.27
2023.73    0.210   334.61
2023.83    0.206   336.01
2023.93    0.202   337.47
2024.03    0.197   338.99
2024.13    0.193   340.58
2024.23    0.190   342.23
2024.33    0.186   343.95
2024.43    0.182   345.74
2024.53    0.179   347.60
2024.63    0.175   349.54
2024.73    0.172   351.55
2024.83    0.169   353.63
2024.93    0.166   355.78
2025.03    0.164   358.00
2025.13    0.162     0.29
2025.23    0.160     2.64
2025.33    0.158     5.04
2025.43    0.156     7.51
2025.53    0.155    10.01
2025.63    0.154    12.56
2025.73    0.153    15.13
2025.83    0.153    17.73
2025.93    0.152    20.34
2026.03    0.152    22.95
2026.13    0.153    25.55
2026.23    0.153    28.13
2026.33    0.154    30.69
2026.43    0.156    33.21
2026.53    0.157    35.69
2026.63    0.159    38.12
2026.73    0.161    40.49
2026.83    0.163    42.80
2026.93    0.165    45.05
2027.03    0.168    47.23
2027.13    0.171    49.34
2027.23    0.174    51.38
2027.33    0.177    53.35
2027.43    0.180    55.25
2027.53    0.184    57.08
2027.63    0.187    58.85
2027.73    0.191    60.54
2027.83    0.195    62.17
2027.93    0.199    63.74
2028.03    0.203    65.24
2028.13    0.207    66.69
2028.23    0.211    68.08
2028.33    0.215    69.42
2028.43    0.219    70.71
2028.53    0.223    71.95
2028.63    0.227    73.15
2028.73    0.231    74.30
2028.83    0.235    75.42
2028.93    0.240    76.49
2029.03    0.244    77.53
2029.13    0.248    78.53
2029.23    0.252    79.50
2029.33    0.255    80.45
2029.43    0.259    81.36
2029.53    0.263    82.25
2029.63    0.266    83.12
2029.73    0.270    83.96
2029.83    0.273    84.78
2029.93    0.276    85.58
2030.03    0.279    86.37
2030.13    0.282    87.14
2030.23    0.284    87.90
2030.33    0.286    88.64
2030.43    0.288    89.38
2030.53    0.289    90.11
2030.63    0.290    90.83
2030.73    0.291    91.54
2030.83    0.291    92.26
2030.93    0.291    92.97
2031.03    0.290    93.69
2031.13    0.288    94.41
2031.23    0.286    95.15
2031.33    0.282    95.90
2031.43    0.277    96.68
2031.53    0.272    97.48
2031.63    0.264    98.32
2031.73    0.255    99.22
2031.83    0.244   100.19
2031.93    0.230   101.27
2032.03    0.213   102.50
2032.13    0.193   103.98
2032.23    0.168   105.84
2032.33    0.138   108.44
2032.43    0.104   112.64
2032.53    0.065   121.58
2032.63    0.029   154.84
2032.73    0.036   240.79
2032.83    0.074   264.10
2032.93    0.113   271.31
2033.03    0.150   274.87
2033.13    0.183   277.07
2033.23    0.214   278.61
2033.33    0.242   279.78
2033.43    0.267   280.72
2033.53    0.290   281.50
2033.63    0.311   282.17
2033.73    0.331   282.76
2033.83    0.349   283.28
2033.93    0.365   283.76
2034.03    0.380   284.20
2034.13    0.395   284.60
2034.23    0.408   284.98
2034.33    0.420   285.33
2034.43    0.431   285.66
2034.53    0.442   285.98
2034.63    0.452   286.28
2034.73    0.461   286.57
2034.83    0.470   286.85
2034.93    0.478   287.12
2035.03    0.485   287.38
2035.13    0.492   287.64
2035.23    0.499   287.88
2035.33    0.505   288.12
2035.43    0.511   288.36
2035.53    0.516   288.59
2035.63    0.521   288.81
2035.73    0.525   289.04
2035.83    0.530   289.25
2035.93    0.533   289.47
2036.03    0.537   289.68
2036.13    0.540   289.89
2036.23    0.543   290.09
2036.33    0.546   290.30
2036.43    0.549   290.50
2036.53    0.551   290.70
2036.63    0.553   290.90

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 16:02:20