Double Star Calculator - Orbit

Orbital Elements for BU612AB

WDS:	BU612AB	WDS ID/Discoverer
P:	22.460	Orbital period (years)
a:	0.19983	Semi-major axis (arcseconds)
i:	43.5	Inclination (degrees)
Ω:	34.58	Longitude of ascending node (degrees)
T:	1929.850	Epoch of periastron passage (year)
e:	0.545	Eccentricity
ω:	359.93	Longitude of periastron (degrees)
Start-Year:	2013.77	Year
End-Year:	2036.23	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU612AB
Position:	133934.68+104446.7	Epoch-2000 right ascension and declination
WDS-ID:	13396+1045	WDS designation
Discoverer Code:	BU612AB	Discover designation and components
ADS number:	8987	Aitken Double Star catalog
HD number:	118889	HD catalog number
Hipparcos number:	66640	Hipparcos catalog number
V1:	6.35	Magnitude of the primary
V2:	6.47	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		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:	Msn1999a	Reference

Double Star Orbit for BU612AB

WDS 6th Orbit including measures of BU612AB

-- 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 BU612AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.259   194.24
--------------------------
2013.77    0.237   240.42
2013.87    0.234   241.12
2013.97    0.232   241.84
2014.07    0.229   242.57
2014.17    0.226   243.33
2014.27    0.223   244.10
2014.37    0.220   244.89
2014.47    0.217   245.71
2014.57    0.214   246.55
2014.67    0.211   247.42
2014.77    0.207   248.31
2014.87    0.204   249.23
2014.97    0.201   250.18
2015.07    0.197   251.16
2015.17    0.194   252.18
2015.27    0.191   253.23
2015.37    0.187   254.32
2015.47    0.183   255.46
2015.57    0.180   256.64
2015.67    0.176   257.86
2015.77    0.173   259.14
2015.87    0.169   260.48
2015.97    0.165   261.87
2016.07    0.162   263.33
2016.17    0.158   264.86
2016.27    0.154   266.46
2016.37    0.150   268.14
2016.47    0.146   269.91
2016.57    0.143   271.78
2016.67    0.139   273.74
2016.77    0.135   275.82
2016.87    0.131   278.01
2016.97    0.128   280.32
2017.07    0.124   282.78
2017.17    0.121   285.38
2017.27    0.117   288.13
2017.37    0.114   291.05
2017.47    0.111   294.14
2017.57    0.108   297.41
2017.67    0.105   300.87
2017.77    0.102   304.53
2017.87    0.099   308.38
2017.97    0.097   312.42
2018.07    0.095   316.64
2018.17    0.093   321.04
2018.27    0.092   325.60
2018.37    0.090   330.30
2018.47    0.090   335.11
2018.57    0.089   340.00
2018.67    0.088   344.96
2018.77    0.088   349.94
2018.87    0.088   354.93
2018.97    0.089   359.90
2019.07    0.089     4.84
2019.17    0.089     9.73
2019.27    0.090    14.58
2019.37    0.090    19.38
2019.47    0.091    24.14
2019.57    0.091    28.87
2019.67    0.091    33.59
2019.77    0.091    38.30
2019.87    0.091    43.02
2019.97    0.090    47.76
2020.07    0.090    52.54
2020.17    0.090    57.37
2020.27    0.089    62.24
2020.37    0.089    67.15
2020.47    0.089    72.10
2020.57    0.088    77.08
2020.67    0.088    82.06
2020.77    0.089    87.02
2020.87    0.089    91.93
2020.97    0.090    96.78
2021.07    0.091   101.51
2021.17    0.093   106.13
2021.27    0.094   110.59
2021.37    0.096   114.88
2021.47    0.098   119.00
2021.57    0.101   122.92
2021.67    0.103   126.65
2021.77    0.106   130.19
2021.87    0.109   133.54
2021.97    0.112   136.71
2022.07    0.116   139.70
2022.17    0.119   142.52
2022.27    0.123   145.18
2022.37    0.126   147.69
2022.47    0.130   150.07
2022.57    0.134   152.31
2022.67    0.137   154.43
2022.77    0.141   156.44
2022.87    0.145   158.35
2022.97    0.149   160.16
2023.07    0.152   161.88
2023.17    0.156   163.51
2023.27    0.160   165.07
2023.37    0.164   166.56
2023.47    0.167   167.98
2023.57    0.171   169.34
2023.67    0.175   170.64
2023.77    0.178   171.89
2023.87    0.182   173.09
2023.97    0.185   174.25
2024.07    0.189   175.36
2024.17    0.192   176.43
2024.27    0.196   177.46
2024.37    0.199   178.46
2024.47    0.203   179.42
2024.57    0.206   180.36
2024.67    0.209   181.26
2024.77    0.212   182.14
2024.87    0.215   182.99
2024.97    0.219   183.82
2025.07    0.222   184.62
2025.17    0.225   185.40
2025.27    0.228   186.16
2025.37    0.230   186.91
2025.47    0.233   187.63
2025.57    0.236   188.34
2025.67    0.239   189.03
2025.77    0.241   189.71
2025.87    0.244   190.37
2025.97    0.247   191.01
2026.07    0.249   191.65
2026.17    0.252   192.27
2026.27    0.254   192.88
2026.37    0.256   193.47
2026.47    0.259   194.06
2026.57    0.261   194.64
2026.67    0.263   195.21
2026.77    0.265   195.76
2026.87    0.267   196.31
2026.97    0.269   196.85
2027.07    0.271   197.39
2027.17    0.273   197.91
2027.27    0.275   198.43
2027.37    0.277   198.94
2027.47    0.279   199.44
2027.57    0.280   199.94
2027.67    0.282   200.43
2027.77    0.284   200.92
2027.87    0.285   201.40
2027.97    0.287   201.87
2028.07    0.288   202.35
2028.17    0.290   202.81
2028.27    0.291   203.27
2028.37    0.292   203.73
2028.47    0.294   204.18
2028.57    0.295   204.63
2028.67    0.296   205.08
2028.77    0.297   205.52
2028.87    0.298   205.96
2028.97    0.299   206.40
2029.07    0.300   206.83
2029.17    0.301   207.26
2029.27    0.302   207.69
2029.37    0.303   208.12
2029.47    0.303   208.54
2029.57    0.304   208.96
2029.67    0.305   209.38
2029.77    0.305   209.80
2029.87    0.306   210.22
2029.97    0.306   210.63
2030.07    0.307   211.04
2030.17    0.307   211.46
2030.27    0.308   211.87
2030.37    0.308   212.28
2030.47    0.308   212.69
2030.57    0.308   213.10
2030.67    0.309   213.51
2030.77    0.309   213.92
2030.87    0.309   214.33
2030.97    0.309   214.73
2031.07    0.309   215.14
2031.17    0.309   215.55
2031.27    0.308   215.96
2031.37    0.308   216.37
2031.47    0.308   216.78
2031.57    0.308   217.19
2031.67    0.307   217.60
2031.77    0.307   218.01
2031.87    0.307   218.43
2031.97    0.306   218.84
2032.07    0.305   219.26
2032.17    0.305   219.68
2032.27    0.304   220.10
2032.37    0.304   220.52
2032.47    0.303   220.94
2032.57    0.302   221.37
2032.67    0.301   221.80
2032.77    0.300   222.23
2032.87    0.299   222.66
2032.97    0.298   223.10
2033.07    0.297   223.53
2033.17    0.296   223.98
2033.27    0.295   224.42
2033.37    0.294   224.87
2033.47    0.293   225.33
2033.57    0.291   225.78
2033.67    0.290   226.24
2033.77    0.288   226.71
2033.87    0.287   227.18
2033.97    0.285   227.65
2034.07    0.284   228.13
2034.17    0.282   228.62
2034.27    0.281   229.11
2034.37    0.279   229.61
2034.47    0.277   230.11
2034.57    0.275   230.62
2034.67    0.273   231.14
2034.77    0.271   231.66
2034.87    0.269   232.20
2034.97    0.267   232.74
2035.07    0.265   233.29
2035.17    0.263   233.84
2035.27    0.261   234.41
2035.37    0.259   234.99
2035.47    0.256   235.57
2035.57    0.254   236.17
2035.67    0.252   236.78
2035.77    0.249   237.40
2035.87    0.247   238.03
2035.97    0.244   238.68
2036.07    0.242   239.34
2036.17    0.239   240.01

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 16:58:34