Double Star Calculator - Orbit

Orbital Elements for BU1181AB
WDS: BU1181AB WDS ID/Discoverer
P: 46.200 Orbital period (years)
a: 0.27 Semi-major axis (arcseconds)
i: 90.3 Inclination (degrees)
Ω: 269.9 Longitude of ascending node (degrees)
T: 1974.800 Epoch of periastron passage (year)
e: 0.79 Eccentricity
ω: 50.1 Longitude of periastron (degrees)
Start-Year: 2001.9 Year
End-Year: 2048.1 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU1181AB
Position: 034115.89+455345.0 Epoch-2000 right ascension and declination
WDS-ID: 03413+4554 WDS designation
Discoverer Code: BU1181AB Discover designation and components
ADS number: 2680 Aitken Double Star catalog
HD number: 22743 HD catalog number
Hipparcos number: 17217 Hipparcos catalog number
V1: 8.20 Magnitude of the primary
V2: 9.90 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2012 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: RAO2015 Reference

Double Star Orbit for BU1181AB



WDS 6th Orbit including measures of BU1181AB

-- 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 BU1181AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.258    89.84
--------------------------
2001.90    0.264    89.45
2002.00    0.262    89.45
2002.10    0.261    89.45
2002.20    0.260    89.44
2002.30    0.258    89.44
2002.40    0.257    89.44
2002.50    0.255    89.44
2002.60    0.254    89.43
2002.70    0.253    89.43
2002.80    0.251    89.43
2002.90    0.250    89.43
2003.00    0.248    89.42
2003.10    0.247    89.42
2003.20    0.245    89.42
2003.30    0.244    89.41
2003.40    0.243    89.41
2003.50    0.241    89.41
2003.60    0.240    89.40
2003.70    0.238    89.40
2003.80    0.237    89.40
2003.90    0.235    89.39
2004.00    0.234    89.39
2004.10    0.232    89.39
2004.20    0.230    89.38
2004.30    0.229    89.38
2004.40    0.227    89.38
2004.50    0.226    89.37
2004.60    0.224    89.37
2004.70    0.223    89.37
2004.80    0.221    89.36
2004.90    0.219    89.36
2005.00    0.218    89.35
2005.10    0.216    89.35
2005.20    0.215    89.35
2005.30    0.213    89.34
2005.40    0.211    89.34
2005.50    0.210    89.33
2005.60    0.208    89.33
2005.70    0.206    89.33
2005.80    0.205    89.32
2005.90    0.203    89.32
2006.00    0.201    89.31
2006.10    0.199    89.31
2006.20    0.198    89.30
2006.30    0.196    89.30
2006.40    0.194    89.29
2006.50    0.193    89.29
2006.60    0.191    89.28
2006.70    0.189    89.28
2006.80    0.187    89.27
2006.90    0.186    89.27
2007.00    0.184    89.26
2007.10    0.182    89.26
2007.20    0.180    89.25
2007.30    0.178    89.25
2007.40    0.177    89.24
2007.50    0.175    89.24
2007.60    0.173    89.23
2007.70    0.171    89.22
2007.80    0.169    89.22
2007.90    0.167    89.21
2008.00    0.165    89.20
2008.10    0.164    89.20
2008.20    0.162    89.19
2008.30    0.160    89.18
2008.40    0.158    89.18
2008.50    0.156    89.17
2008.60    0.154    89.16
2008.70    0.152    89.15
2008.80    0.150    89.15
2008.90    0.148    89.14
2009.00    0.146    89.13
2009.10    0.144    89.12
2009.20    0.142    89.11
2009.30    0.140    89.10
2009.40    0.138    89.09
2009.50    0.136    89.08
2009.60    0.134    89.07
2009.70    0.132    89.06
2009.80    0.130    89.05
2009.90    0.128    89.04
2010.00    0.126    89.03
2010.10    0.124    89.02
2010.20    0.122    89.01
2010.30    0.120    88.99
2010.40    0.118    88.98
2010.50    0.116    88.97
2010.60    0.114    88.95
2010.70    0.112    88.94
2010.80    0.110    88.93
2010.90    0.108    88.91
2011.00    0.106    88.89
2011.10    0.104    88.88
2011.20    0.101    88.86
2011.30    0.099    88.84
2011.40    0.097    88.82
2011.50    0.095    88.80
2011.60    0.093    88.78
2011.70    0.091    88.76
2011.80    0.089    88.74
2011.90    0.086    88.71
2012.00    0.084    88.69
2012.10    0.082    88.66
2012.20    0.080    88.64
2012.30    0.078    88.61
2012.40    0.075    88.57
2012.50    0.073    88.54
2012.60    0.071    88.51
2012.70    0.069    88.47
2012.80    0.067    88.43
2012.90    0.064    88.39
2013.00    0.062    88.34
2013.10    0.060    88.29
2013.20    0.058    88.24
2013.30    0.055    88.18
2013.40    0.053    88.12
2013.50    0.051    88.05
2013.60    0.048    87.98
2013.70    0.046    87.90
2013.80    0.044    87.81
2013.90    0.042    87.71
2014.00    0.039    87.59
2014.10    0.037    87.47
2014.20    0.035    87.33
2014.30    0.032    87.16
2014.40    0.030    86.98
2014.50    0.028    86.76
2014.60    0.025    86.50
2014.70    0.023    86.18
2014.80    0.021    85.80
2014.90    0.018    85.32
2015.00    0.016    84.69
2015.10    0.014    83.86
2015.20    0.011    82.67
2015.30    0.009    80.87
2015.40    0.007    77.81
2015.50    0.004    71.51
2015.60    0.002    52.53
2015.70    0.001   336.67
2015.80    0.003   294.25
2015.90    0.005   283.82
2016.00    0.008   279.51
2016.10    0.010   277.18
2016.20    0.012   275.73
2016.30    0.015   274.73
2016.40    0.017   274.01
2016.50    0.019   273.46
2016.60    0.022   273.03
2016.70    0.024   272.68
2016.80    0.026   272.40
2016.90    0.029   272.16
2017.00    0.031   271.95
2017.10    0.033   271.77
2017.20    0.036   271.62
2017.30    0.038   271.49
2017.40    0.040   271.37
2017.50    0.042   271.26
2017.60    0.045   271.16
2017.70    0.047   271.07
2017.80    0.049   270.99
2017.90    0.051   270.92
2018.00    0.053   270.85
2018.10    0.055   270.79
2018.20    0.057   270.73
2018.30    0.059   270.68
2018.40    0.061   270.63
2018.50    0.063   270.58
2018.60    0.065   270.54
2018.70    0.067   270.49
2018.80    0.068   270.45
2018.90    0.070   270.42
2019.00    0.071   270.38
2019.10    0.073   270.34
2019.20    0.074   270.31
2019.30    0.075   270.28
2019.40    0.076   270.25
2019.50    0.077   270.21
2019.60    0.077   270.18
2019.70    0.078   270.15
2019.80    0.078   270.12
2019.90    0.078   270.09
2020.00    0.077   270.06
2020.10    0.076   270.03
2020.20    0.075   270.00
2020.30    0.073   269.97
2020.40    0.070   269.93
2020.50    0.067   269.89
2020.60    0.062   269.85
2020.70    0.057   269.80
2020.80    0.051   269.73
2020.90    0.044   269.65
2021.00    0.036   269.54
2021.10    0.028   269.36
2021.20    0.019   269.01
2021.30    0.009   267.96
2021.40    0.000   135.34
2021.50    0.010    91.89
2021.60    0.019    90.95
2021.70    0.029    90.62
2021.80    0.038    90.45
2021.90    0.046    90.35
2022.00    0.055    90.27
2022.10    0.063    90.22
2022.20    0.071    90.18
2022.30    0.079    90.15
2022.40    0.086    90.12
2022.50    0.093    90.10
2022.60    0.100    90.08
2022.70    0.106    90.06
2022.80    0.113    90.05
2022.90    0.119    90.03
2023.00    0.125    90.02
2023.10    0.131    90.01
2023.20    0.136    90.00
2023.30    0.142    89.99
2023.40    0.147    89.98
2023.50    0.152    89.97
2023.60    0.157    89.96
2023.70    0.162    89.96
2023.80    0.166    89.95
2023.90    0.171    89.94
2024.00    0.175    89.94
2024.10    0.180    89.93
2024.20    0.184    89.93
2024.30    0.188    89.92
2024.40    0.192    89.92
2024.50    0.196    89.91
2024.60    0.200    89.91
2024.70    0.204    89.90
2024.80    0.207    89.90
2024.90    0.211    89.89
2025.00    0.214    89.89
2025.10    0.218    89.89
2025.20    0.221    89.88
2025.30    0.224    89.88
2025.40    0.227    89.88
2025.50    0.230    89.87
2025.60    0.233    89.87
2025.70    0.236    89.86
2025.80    0.239    89.86
2025.90    0.242    89.86
2026.00    0.245    89.86
2026.10    0.248    89.85
2026.20    0.250    89.85
2026.30    0.253    89.85
2026.40    0.255    89.84
2026.50    0.258    89.84
2026.60    0.260    89.84
2026.70    0.263    89.84
2026.80    0.265    89.83
2026.90    0.267    89.83
2027.00    0.270    89.83
2027.10    0.272    89.83
2027.20    0.274    89.82
2027.30    0.276    89.82
2027.40    0.278    89.82
2027.50    0.280    89.82
2027.60    0.282    89.81
2027.70    0.284    89.81
2027.80    0.286    89.81
2027.90    0.288    89.81
2028.00    0.290    89.80
2028.10    0.292    89.80
2028.20    0.293    89.80
2028.30    0.295    89.80
2028.40    0.297    89.80
2028.50    0.299    89.79
2028.60    0.300    89.79
2028.70    0.302    89.79
2028.80    0.303    89.79
2028.90    0.305    89.79
2029.00    0.306    89.78
2029.10    0.308    89.78
2029.20    0.309    89.78
2029.30    0.311    89.78
2029.40    0.312    89.78
2029.50    0.313    89.77
2029.60    0.315    89.77
2029.70    0.316    89.77
2029.80    0.317    89.77
2029.90    0.318    89.77
2030.00    0.320    89.77
2030.10    0.321    89.76
2030.20    0.322    89.76
2030.30    0.323    89.76
2030.40    0.324    89.76
2030.50    0.325    89.76
2030.60    0.326    89.76
2030.70    0.327    89.75
2030.80    0.328    89.75
2030.90    0.329    89.75
2031.00    0.330    89.75
2031.10    0.331    89.75
2031.20    0.332    89.75
2031.30    0.333    89.74
2031.40    0.334    89.74
2031.50    0.334    89.74
2031.60    0.335    89.74
2031.70    0.336    89.74
2031.80    0.337    89.74
2031.90    0.338    89.73
2032.00    0.338    89.73
2032.10    0.339    89.73
2032.20    0.340    89.73
2032.30    0.340    89.73
2032.40    0.341    89.73
2032.50    0.342    89.72
2032.60    0.342    89.72
2032.70    0.343    89.72
2032.80    0.343    89.72
2032.90    0.344    89.72
2033.00    0.344    89.72
2033.10    0.345    89.71
2033.20    0.345    89.71
2033.30    0.346    89.71
2033.40    0.346    89.71
2033.50    0.347    89.71
2033.60    0.347    89.71
2033.70    0.347    89.71
2033.80    0.348    89.70
2033.90    0.348    89.70
2034.00    0.348    89.70
2034.10    0.349    89.70
2034.20    0.349    89.70
2034.30    0.349    89.70
2034.40    0.350    89.70
2034.50    0.350    89.69
2034.60    0.350    89.69
2034.70    0.350    89.69
2034.80    0.350    89.69
2034.90    0.351    89.69
2035.00    0.351    89.69
2035.10    0.351    89.68
2035.20    0.351    89.68
2035.30    0.351    89.68
2035.40    0.351    89.68
2035.50    0.351    89.68
2035.60    0.351    89.68
2035.70    0.352    89.68
2035.80    0.352    89.67
2035.90    0.352    89.67
2036.00    0.352    89.67
2036.10    0.352    89.67
2036.20    0.352    89.67
2036.30    0.352    89.67
2036.40    0.351    89.67
2036.50    0.351    89.66
2036.60    0.351    89.66
2036.70    0.351    89.66
2036.80    0.351    89.66
2036.90    0.351    89.66
2037.00    0.351    89.66
2037.10    0.351    89.66
2037.20    0.351    89.65
2037.30    0.350    89.65
2037.40    0.350    89.65
2037.50    0.350    89.65
2037.60    0.350    89.65
2037.70    0.350    89.65
2037.80    0.349    89.64
2037.90    0.349    89.64
2038.00    0.349    89.64
2038.10    0.349    89.64
2038.20    0.348    89.64
2038.30    0.348    89.64
2038.40    0.348    89.64
2038.50    0.347    89.63
2038.60    0.347    89.63
2038.70    0.347    89.63
2038.80    0.346    89.63
2038.90    0.346    89.63
2039.00    0.345    89.63
2039.10    0.345    89.63
2039.20    0.345    89.62
2039.30    0.344    89.62
2039.40    0.344    89.62
2039.50    0.343    89.62
2039.60    0.343    89.62
2039.70    0.342    89.62
2039.80    0.342    89.61
2039.90    0.341    89.61
2040.00    0.341    89.61
2040.10    0.340    89.61
2040.20    0.340    89.61
2040.30    0.339    89.61
2040.40    0.339    89.61
2040.50    0.338    89.60
2040.60    0.337    89.60
2040.70    0.337    89.60
2040.80    0.336    89.60
2040.90    0.336    89.60
2041.00    0.335    89.60
2041.10    0.334    89.59
2041.20    0.334    89.59
2041.30    0.333    89.59
2041.40    0.332    89.59
2041.50    0.332    89.59
2041.60    0.331    89.59
2041.70    0.330    89.58
2041.80    0.329    89.58
2041.90    0.329    89.58
2042.00    0.328    89.58
2042.10    0.327    89.58
2042.20    0.327    89.58
2042.30    0.326    89.57
2042.40    0.325    89.57
2042.50    0.324    89.57
2042.60    0.323    89.57
2042.70    0.323    89.57
2042.80    0.322    89.56
2042.90    0.321    89.56
2043.00    0.320    89.56
2043.10    0.319    89.56
2043.20    0.318    89.56
2043.30    0.317    89.56
2043.40    0.317    89.55
2043.50    0.316    89.55
2043.60    0.315    89.55
2043.70    0.314    89.55
2043.80    0.313    89.55
2043.90    0.312    89.54
2044.00    0.311    89.54
2044.10    0.310    89.54
2044.20    0.309    89.54
2044.30    0.308    89.54
2044.40    0.307    89.54
2044.50    0.306    89.53
2044.60    0.305    89.53
2044.70    0.304    89.53
2044.80    0.303    89.53
2044.90    0.302    89.53
2045.00    0.301    89.52
2045.10    0.300    89.52
2045.20    0.299    89.52
2045.30    0.298    89.52
2045.40    0.297    89.52
2045.50    0.296    89.51
2045.60    0.294    89.51
2045.70    0.293    89.51
2045.80    0.292    89.51
2045.90    0.291    89.50
2046.00    0.290    89.50
2046.10    0.289    89.50
2046.20    0.288    89.50
2046.30    0.286    89.50
2046.40    0.285    89.49
2046.50    0.284    89.49
2046.60    0.283    89.49
2046.70    0.282    89.49
2046.80    0.280    89.48
2046.90    0.279    89.48
2047.00    0.278    89.48
2047.10    0.277    89.48
2047.20    0.275    89.48
2047.30    0.274    89.47
2047.40    0.273    89.47
2047.50    0.272    89.47
2047.60    0.270    89.47
2047.70    0.269    89.46
2047.80    0.268    89.46
2047.90    0.266    89.46
2048.00    0.265    89.46






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 15:13:34



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