Double Star Calculator - Orbit

Orbital Elements for BU949
WDS: BU949 WDS ID/Discoverer
P: 56.330 Orbital period (years)
a: 0.289 Semi-major axis (arcseconds)
i: 82.3 Inclination (degrees)
Ω: 198.1 Longitude of ascending node (degrees)
T: 2018.340 Epoch of periastron passage (year)
e: 0.774 Eccentricity
ω: 157.8 Longitude of periastron (degrees)
Start-Year: 1996.835 Year
End-Year: 2053.165 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU949
Position: 160827.25-100608.4 Epoch-2000 right ascension and declination
WDS-ID: 16085-1006 WDS designation
Discoverer Code: BU949 Discover designation and components
ADS number: 9932 Aitken Double Star catalog
HD number: 144892 HD catalog number
Hipparcos number: 79071 Hipparcos catalog number
V1: 7.08 Magnitude of the primary
V2: 8.19 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2014 Date of last observation
Orbit grade: 2 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Tok2015c Reference

Double Star Orbit for BU949



WDS 6th Orbit including measures of BU949

-- 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 BU949
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.171   186.14
--------------------------
1996.84    0.480   196.27
1996.93    0.479   196.29
1997.03    0.479   196.31
1997.13    0.479   196.33
1997.23    0.478   196.35
1997.33    0.478   196.37
1997.43    0.478   196.39
1997.53    0.477   196.41
1997.63    0.477   196.43
1997.73    0.476   196.45
1997.83    0.476   196.47
1997.93    0.475   196.49
1998.03    0.475   196.51
1998.13    0.475   196.53
1998.23    0.474   196.55
1998.33    0.474   196.57
1998.43    0.473   196.59
1998.53    0.473   196.61
1998.63    0.472   196.63
1998.73    0.471   196.65
1998.83    0.471   196.67
1998.93    0.470   196.69
1999.03    0.470   196.71
1999.13    0.469   196.73
1999.23    0.469   196.75
1999.33    0.468   196.77
1999.43    0.467   196.79
1999.53    0.467   196.81
1999.63    0.466   196.84
1999.73    0.465   196.86
1999.83    0.465   196.88
1999.93    0.464   196.90
2000.03    0.463   196.92
2000.13    0.463   196.94
2000.23    0.462   196.96
2000.33    0.461   196.98
2000.43    0.460   197.00
2000.53    0.460   197.03
2000.63    0.459   197.05
2000.73    0.458   197.07
2000.83    0.457   197.09
2000.93    0.456   197.11
2001.03    0.455   197.13
2001.13    0.455   197.16
2001.23    0.454   197.18
2001.33    0.453   197.20
2001.43    0.452   197.22
2001.53    0.451   197.24
2001.63    0.450   197.27
2001.73    0.449   197.29
2001.83    0.448   197.31
2001.93    0.447   197.33
2002.03    0.446   197.36
2002.13    0.445   197.38
2002.23    0.444   197.40
2002.33    0.443   197.43
2002.43    0.442   197.45
2002.53    0.441   197.47
2002.63    0.440   197.50
2002.73    0.439   197.52
2002.83    0.438   197.54
2002.93    0.437   197.57
2003.03    0.435   197.59
2003.13    0.434   197.61
2003.23    0.433   197.64
2003.33    0.432   197.66
2003.43    0.431   197.69
2003.53    0.429   197.71
2003.63    0.428   197.74
2003.73    0.427   197.76
2003.83    0.426   197.79
2003.93    0.424   197.81
2004.03    0.423   197.84
2004.13    0.422   197.86
2004.23    0.420   197.89
2004.33    0.419   197.91
2004.43    0.418   197.94
2004.53    0.416   197.96
2004.63    0.415   197.99
2004.73    0.413   198.02
2004.83    0.412   198.04
2004.93    0.411   198.07
2005.03    0.409   198.10
2005.13    0.408   198.12
2005.23    0.406   198.15
2005.33    0.404   198.18
2005.43    0.403   198.21
2005.53    0.401   198.24
2005.63    0.400   198.26
2005.73    0.398   198.29
2005.83    0.397   198.32
2005.93    0.395   198.35
2006.03    0.393   198.38
2006.13    0.392   198.41
2006.23    0.390   198.44
2006.33    0.388   198.47
2006.43    0.386   198.50
2006.53    0.385   198.53
2006.63    0.383   198.56
2006.73    0.381   198.59
2006.83    0.379   198.62
2006.93    0.377   198.65
2007.03    0.376   198.68
2007.13    0.374   198.72
2007.23    0.372   198.75
2007.33    0.370   198.78
2007.43    0.368   198.82
2007.53    0.366   198.85
2007.63    0.364   198.88
2007.73    0.362   198.92
2007.83    0.360   198.95
2007.93    0.358   198.99
2008.03    0.356   199.02
2008.13    0.354   199.06
2008.23    0.351   199.10
2008.33    0.349   199.13
2008.43    0.347   199.17
2008.53    0.345   199.21
2008.63    0.343   199.25
2008.73    0.340   199.29
2008.83    0.338   199.32
2008.93    0.336   199.36
2009.03    0.334   199.40
2009.13    0.331   199.45
2009.23    0.329   199.49
2009.33    0.326   199.53
2009.43    0.324   199.57
2009.53    0.322   199.62
2009.63    0.319   199.66
2009.73    0.317   199.70
2009.83    0.314   199.75
2009.93    0.311   199.80
2010.03    0.309   199.84
2010.13    0.306   199.89
2010.23    0.304   199.94
2010.33    0.301   199.99
2010.43    0.298   200.04
2010.53    0.295   200.09
2010.63    0.293   200.14
2010.73    0.290   200.20
2010.83    0.287   200.25
2010.93    0.284   200.31
2011.03    0.281   200.36
2011.13    0.278   200.42
2011.23    0.275   200.48
2011.33    0.272   200.54
2011.43    0.269   200.60
2011.53    0.266   200.67
2011.63    0.263   200.73
2011.73    0.260   200.80
2011.83    0.257   200.87
2011.93    0.254   200.93
2012.03    0.250   201.01
2012.13    0.247   201.08
2012.23    0.244   201.15
2012.33    0.240   201.23
2012.43    0.237   201.31
2012.53    0.233   201.39
2012.63    0.230   201.48
2012.73    0.226   201.56
2012.83    0.223   201.65
2012.93    0.219   201.75
2013.03    0.215   201.84
2013.13    0.212   201.94
2013.23    0.208   202.05
2013.33    0.204   202.15
2013.43    0.200   202.26
2013.53    0.196   202.38
2013.63    0.192   202.50
2013.73    0.188   202.62
2013.83    0.184   202.75
2013.93    0.180   202.89
2014.03    0.176   203.03
2014.13    0.172   203.18
2014.23    0.167   203.34
2014.33    0.163   203.51
2014.43    0.158   203.68
2014.53    0.154   203.87
2014.63    0.149   204.07
2014.73    0.145   204.27
2014.83    0.140   204.50
2014.93    0.135   204.74
2015.03    0.131   204.99
2015.13    0.126   205.27
2015.23    0.121   205.57
2015.33    0.116   205.89
2015.43    0.111   206.25
2015.53    0.105   206.64
2015.63    0.100   207.07
2015.73    0.095   207.54
2015.83    0.089   208.08
2015.93    0.084   208.68
2016.03    0.078   209.38
2016.13    0.073   210.18
2016.23    0.067   211.11
2016.33    0.061   212.22
2016.43    0.055   213.57
2016.53    0.049   215.24
2016.63    0.043   217.38
2016.73    0.037   220.19
2016.83    0.031   224.08
2016.93    0.025   229.77
2017.03    0.020   238.68
2017.13    0.015   253.63
2017.23    0.012   278.35
2017.33    0.013   309.15
2017.43    0.016   332.92
2017.53    0.020   347.19
2017.63    0.026   355.76
2017.73    0.032     1.31
2017.83    0.037     5.18
2017.93    0.043     8.04
2018.03    0.048    10.26
2018.13    0.052    12.07
2018.23    0.057    13.59
2018.33    0.060    14.91
2018.43    0.063    16.09
2018.53    0.066    17.17
2018.63    0.068    18.18
2018.73    0.069    19.16
2018.83    0.069    20.11
2018.93    0.069    21.05
2019.03    0.069    22.00
2019.13    0.068    22.97
2019.23    0.066    23.98
2019.33    0.065    25.03
2019.43    0.063    26.14
2019.53    0.061    27.32
2019.63    0.058    28.60
2019.73    0.056    29.99
2019.83    0.053    31.51
2019.93    0.051    33.20
2020.03    0.048    35.07
2020.13    0.045    37.19
2020.23    0.042    39.59
2020.33    0.039    42.33
2020.43    0.036    45.50
2020.53    0.034    49.18
2020.63    0.031    53.49
2020.73    0.029    58.56
2020.83    0.027    64.50
2020.93    0.025    71.42
2021.03    0.023    79.35
2021.13    0.022    88.16
2021.23    0.022    97.57
2021.33    0.022   107.12
2021.43    0.023   116.31
2021.53    0.024   124.74
2021.63    0.026   132.21
2021.73    0.028   138.66
2021.83    0.030   144.16
2021.93    0.032   148.83
2022.03    0.035   152.81
2022.13    0.038   156.20
2022.23    0.041   159.11
2022.33    0.044   161.62
2022.43    0.047   163.81
2022.53    0.050   165.73
2022.63    0.053   167.43
2022.73    0.056   168.93
2022.83    0.060   170.27
2022.93    0.063   171.48
2023.03    0.066   172.57
2023.13    0.069   173.56
2023.23    0.073   174.46
2023.33    0.076   175.29
2023.43    0.079   176.04
2023.53    0.082   176.74
2023.63    0.085   177.39
2023.73    0.089   177.99
2023.83    0.092   178.55
2023.93    0.095   179.07
2024.03    0.098   179.56
2024.13    0.101   180.01
2024.23    0.104   180.44
2024.33    0.107   180.85
2024.43    0.110   181.23
2024.53    0.114   181.59
2024.63    0.117   181.93
2024.73    0.120   182.26
2024.83    0.123   182.56
2024.93    0.126   182.86
2025.03    0.129   183.14
2025.13    0.132   183.40
2025.23    0.135   183.66
2025.33    0.138   183.90
2025.43    0.141   184.14
2025.53    0.144   184.36
2025.63    0.147   184.58
2025.73    0.149   184.78
2025.83    0.152   184.98
2025.93    0.155   185.17
2026.03    0.158   185.36
2026.13    0.161   185.54
2026.23    0.164   185.71
2026.33    0.167   185.87
2026.43    0.169   186.03
2026.53    0.172   186.19
2026.63    0.175   186.34
2026.73    0.178   186.49
2026.83    0.180   186.63
2026.93    0.183   186.76
2027.03    0.186   186.90
2027.13    0.188   187.03
2027.23    0.191   187.15
2027.33    0.194   187.27
2027.43    0.196   187.39
2027.53    0.199   187.51
2027.63    0.202   187.62
2027.73    0.204   187.73
2027.83    0.207   187.84
2027.93    0.209   187.94
2028.03    0.212   188.05
2028.13    0.215   188.15
2028.23    0.217   188.24
2028.33    0.220   188.34
2028.43    0.222   188.43
2028.53    0.225   188.52
2028.63    0.227   188.61
2028.73    0.229   188.70
2028.83    0.232   188.78
2028.93    0.234   188.87
2029.03    0.237   188.95
2029.13    0.239   189.03
2029.23    0.242   189.11
2029.33    0.244   189.18
2029.43    0.246   189.26
2029.53    0.249   189.33
2029.63    0.251   189.40
2029.73    0.253   189.48
2029.83    0.256   189.55
2029.93    0.258   189.61
2030.03    0.260   189.68
2030.13    0.262   189.75
2030.23    0.265   189.81
2030.33    0.267   189.88
2030.43    0.269   189.94
2030.53    0.271   190.00
2030.63    0.273   190.06
2030.73    0.276   190.12
2030.83    0.278   190.18
2030.93    0.280   190.24
2031.03    0.282   190.30
2031.13    0.284   190.35
2031.23    0.286   190.41
2031.33    0.288   190.47
2031.43    0.291   190.52
2031.53    0.293   190.57
2031.63    0.295   190.63
2031.73    0.297   190.68
2031.83    0.299   190.73
2031.93    0.301   190.78
2032.03    0.303   190.83
2032.13    0.305   190.88
2032.23    0.307   190.93
2032.33    0.309   190.97
2032.43    0.311   191.02
2032.53    0.313   191.07
2032.63    0.315   191.11
2032.73    0.316   191.16
2032.83    0.318   191.20
2032.93    0.320   191.25
2033.03    0.322   191.29
2033.13    0.324   191.34
2033.23    0.326   191.38
2033.33    0.328   191.42
2033.43    0.330   191.46
2033.53    0.331   191.50
2033.63    0.333   191.54
2033.73    0.335   191.59
2033.83    0.337   191.63
2033.93    0.339   191.67
2034.03    0.340   191.70
2034.13    0.342   191.74
2034.23    0.344   191.78
2034.33    0.346   191.82
2034.43    0.347   191.86
2034.53    0.349   191.90
2034.63    0.351   191.93
2034.73    0.352   191.97
2034.83    0.354   192.00
2034.93    0.356   192.04
2035.03    0.357   192.08
2035.13    0.359   192.11
2035.23    0.361   192.15
2035.33    0.362   192.18
2035.43    0.364   192.22
2035.53    0.366   192.25
2035.63    0.367   192.28
2035.73    0.369   192.32
2035.83    0.370   192.35
2035.93    0.372   192.38
2036.03    0.373   192.42
2036.13    0.375   192.45
2036.23    0.376   192.48
2036.33    0.378   192.51
2036.43    0.379   192.54
2036.53    0.381   192.57
2036.63    0.382   192.61
2036.73    0.384   192.64
2036.83    0.385   192.67
2036.93    0.387   192.70
2037.03    0.388   192.73
2037.13    0.390   192.76
2037.23    0.391   192.79
2037.33    0.392   192.82
2037.43    0.394   192.85
2037.53    0.395   192.88
2037.63    0.396   192.90
2037.73    0.398   192.93
2037.83    0.399   192.96
2037.93    0.401   192.99
2038.03    0.402   193.02
2038.13    0.403   193.05
2038.23    0.404   193.07
2038.33    0.406   193.10
2038.43    0.407   193.13
2038.53    0.408   193.16
2038.63    0.410   193.18
2038.73    0.411   193.21
2038.83    0.412   193.24
2038.93    0.413   193.26
2039.03    0.414   193.29
2039.13    0.416   193.32
2039.23    0.417   193.34
2039.33    0.418   193.37
2039.43    0.419   193.39
2039.53    0.420   193.42
2039.63    0.421   193.45
2039.73    0.423   193.47
2039.83    0.424   193.50
2039.93    0.425   193.52
2040.03    0.426   193.55
2040.13    0.427   193.57
2040.23    0.428   193.60
2040.33    0.429   193.62
2040.43    0.430   193.65
2040.53    0.431   193.67
2040.63    0.432   193.69
2040.73    0.433   193.72
2040.83    0.434   193.74
2040.93    0.435   193.77
2041.03    0.436   193.79
2041.13    0.437   193.81
2041.23    0.438   193.84
2041.33    0.439   193.86
2041.43    0.440   193.88
2041.53    0.441   193.91
2041.63    0.442   193.93
2041.73    0.443   193.95
2041.83    0.444   193.98
2041.93    0.445   194.00
2042.03    0.446   194.02
2042.13    0.447   194.05
2042.23    0.448   194.07
2042.33    0.449   194.09
2042.43    0.449   194.11
2042.53    0.450   194.14
2042.63    0.451   194.16
2042.73    0.452   194.18
2042.83    0.453   194.20
2042.93    0.454   194.22
2043.03    0.454   194.25
2043.13    0.455   194.27
2043.23    0.456   194.29
2043.33    0.457   194.31
2043.43    0.457   194.33
2043.53    0.458   194.35
2043.63    0.459   194.38
2043.73    0.460   194.40
2043.83    0.460   194.42
2043.93    0.461   194.44
2044.03    0.462   194.46
2044.13    0.462   194.48
2044.23    0.463   194.50
2044.33    0.464   194.53
2044.43    0.464   194.55
2044.53    0.465   194.57
2044.63    0.466   194.59
2044.73    0.466   194.61
2044.83    0.467   194.63
2044.93    0.467   194.65
2045.03    0.468   194.67
2045.13    0.469   194.69
2045.23    0.469   194.71
2045.33    0.470   194.73
2045.43    0.470   194.75
2045.53    0.471   194.77
2045.63    0.471   194.79
2045.73    0.472   194.81
2045.83    0.472   194.84
2045.93    0.473   194.86
2046.03    0.473   194.88
2046.13    0.474   194.90
2046.23    0.474   194.92
2046.33    0.475   194.94
2046.43    0.475   194.96
2046.53    0.476   194.98
2046.63    0.476   195.00
2046.73    0.476   195.02
2046.83    0.477   195.04
2046.93    0.477   195.06
2047.03    0.478   195.08
2047.13    0.478   195.10
2047.23    0.478   195.12
2047.33    0.479   195.14
2047.43    0.479   195.16
2047.53    0.479   195.17
2047.63    0.480   195.19
2047.73    0.480   195.21
2047.83    0.480   195.23
2047.93    0.480   195.25
2048.03    0.481   195.27
2048.13    0.481   195.29
2048.23    0.481   195.31
2048.33    0.481   195.33
2048.43    0.482   195.35
2048.53    0.482   195.37
2048.63    0.482   195.39
2048.73    0.482   195.41
2048.83    0.482   195.43
2048.93    0.483   195.45
2049.03    0.483   195.47
2049.13    0.483   195.49
2049.23    0.483   195.51
2049.33    0.483   195.53
2049.43    0.483   195.55
2049.53    0.483   195.57
2049.63    0.484   195.58
2049.73    0.484   195.60
2049.83    0.484   195.62
2049.93    0.484   195.64
2050.03    0.484   195.66
2050.13    0.484   195.68
2050.23    0.484   195.70
2050.33    0.484   195.72
2050.43    0.484   195.74
2050.53    0.484   195.76
2050.63    0.484   195.78
2050.73    0.484   195.80
2050.83    0.484   195.82
2050.93    0.484   195.84
2051.03    0.484   195.86
2051.13    0.484   195.87
2051.23    0.484   195.89
2051.33    0.483   195.91
2051.43    0.483   195.93
2051.53    0.483   195.95
2051.63    0.483   195.97
2051.73    0.483   195.99
2051.83    0.483   196.01
2051.93    0.483   196.03
2052.03    0.482   196.05
2052.13    0.482   196.07
2052.23    0.482   196.09
2052.33    0.482   196.11
2052.43    0.482   196.13
2052.53    0.481   196.15
2052.63    0.481   196.17
2052.73    0.481   196.19
2052.83    0.481   196.21
2052.93    0.480   196.23
2053.03    0.480   196.24
2053.13    0.480   196.26






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 17:23:18



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