Double Star Calculator - Orbit

Orbital Elements for BU1026AB
WDS: BU1026AB WDS ID/Discoverer
P: 66.840 Orbital period (years)
a: 0.2514 Semi-major axis (arcseconds)
i: 42.77 Inclination (degrees)
Ω: 254.9 Longitude of ascending node (degrees)
T: 1986.542 Epoch of periastron passage (year)
e: 0.8282 Eccentricity
ω: 255.2 Longitude of periastron (degrees)
Start-Year: 1991.58 Year
End-Year: 2058.42 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU1026AB
Position: 001208.05+533726.1 Epoch-2000 right ascension and declination
WDS-ID: 00121+5337 WDS designation
Discoverer Code: BU1026AB Discover designation and components
ADS number: 148 Aitken Double Star catalog
HD number: 761 HD catalog number
Hipparcos number: 981 Hipparcos catalog number
V1: 7.25 Magnitude of the primary
V2: 8.46 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 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: Hrt1996a Reference

Double Star Orbit for BU1026AB



WDS 6th Orbit including measures of BU1026AB

-- 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 BU1026AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.332   333.00
--------------------------
1991.58    0.177   277.63
1991.68    0.179   278.07
1991.78    0.181   278.50
1991.88    0.183   278.92
1991.98    0.185   279.34
1992.08    0.187   279.74
1992.18    0.189   280.14
1992.28    0.190   280.53
1992.38    0.192   280.91
1992.48    0.194   281.29
1992.58    0.196   281.66
1992.68    0.198   282.02
1992.78    0.199   282.37
1992.88    0.201   282.72
1992.98    0.203   283.07
1993.08    0.204   283.41
1993.18    0.206   283.74
1993.28    0.207   284.07
1993.38    0.209   284.39
1993.48    0.211   284.71
1993.58    0.212   285.02
1993.68    0.214   285.33
1993.78    0.215   285.64
1993.88    0.217   285.94
1993.98    0.218   286.23
1994.08    0.220   286.52
1994.18    0.221   286.81
1994.28    0.223   287.10
1994.38    0.224   287.38
1994.48    0.225   287.65
1994.58    0.227   287.93
1994.68    0.228   288.20
1994.78    0.230   288.47
1994.88    0.231   288.73
1994.98    0.232   288.99
1995.08    0.234   289.25
1995.18    0.235   289.50
1995.28    0.236   289.76
1995.38    0.238   290.00
1995.48    0.239   290.25
1995.58    0.240   290.50
1995.68    0.241   290.74
1995.78    0.243   290.98
1995.88    0.244   291.21
1995.98    0.245   291.45
1996.08    0.246   291.68
1996.18    0.247   291.91
1996.28    0.249   292.14
1996.38    0.250   292.36
1996.48    0.251   292.59
1996.58    0.252   292.81
1996.68    0.253   293.03
1996.78    0.254   293.24
1996.88    0.256   293.46
1996.98    0.257   293.67
1997.08    0.258   293.88
1997.18    0.259   294.09
1997.28    0.260   294.30
1997.38    0.261   294.51
1997.48    0.262   294.71
1997.58    0.263   294.92
1997.68    0.264   295.12
1997.78    0.265   295.32
1997.88    0.266   295.52
1997.98    0.267   295.71
1998.08    0.268   295.91
1998.18    0.269   296.10
1998.28    0.270   296.29
1998.38    0.271   296.49
1998.48    0.272   296.68
1998.58    0.273   296.86
1998.68    0.274   297.05
1998.78    0.275   297.24
1998.88    0.276   297.42
1998.98    0.277   297.61
1999.08    0.278   297.79
1999.18    0.279   297.97
1999.28    0.280   298.15
1999.38    0.280   298.33
1999.48    0.281   298.50
1999.58    0.282   298.68
1999.68    0.283   298.86
1999.78    0.284   299.03
1999.88    0.285   299.20
1999.98    0.286   299.38
2000.08    0.286   299.55
2000.18    0.287   299.72
2000.28    0.288   299.89
2000.38    0.289   300.05
2000.48    0.290   300.22
2000.58    0.290   300.39
2000.68    0.291   300.55
2000.78    0.292   300.72
2000.88    0.293   300.88
2000.98    0.294   301.05
2001.08    0.294   301.21
2001.18    0.295   301.37
2001.28    0.296   301.53
2001.38    0.297   301.69
2001.48    0.297   301.85
2001.58    0.298   302.01
2001.68    0.299   302.16
2001.78    0.300   302.32
2001.88    0.300   302.47
2001.98    0.301   302.63
2002.08    0.302   302.78
2002.18    0.302   302.94
2002.28    0.303   303.09
2002.38    0.304   303.24
2002.48    0.304   303.39
2002.58    0.305   303.55
2002.68    0.306   303.70
2002.78    0.306   303.84
2002.88    0.307   303.99
2002.98    0.308   304.14
2003.08    0.308   304.29
2003.18    0.309   304.44
2003.28    0.309   304.58
2003.38    0.310   304.73
2003.48    0.311   304.87
2003.58    0.311   305.02
2003.68    0.312   305.16
2003.78    0.312   305.31
2003.88    0.313   305.45
2003.98    0.314   305.59
2004.08    0.314   305.74
2004.18    0.315   305.88
2004.28    0.315   306.02
2004.38    0.316   306.16
2004.48    0.316   306.30
2004.58    0.317   306.44
2004.68    0.318   306.58
2004.78    0.318   306.72
2004.88    0.319   306.85
2004.98    0.319   306.99
2005.08    0.320   307.13
2005.18    0.320   307.27
2005.28    0.321   307.40
2005.38    0.321   307.54
2005.48    0.322   307.67
2005.58    0.322   307.81
2005.68    0.323   307.94
2005.78    0.323   308.08
2005.88    0.324   308.21
2005.98    0.324   308.35
2006.08    0.325   308.48
2006.18    0.325   308.61
2006.28    0.325   308.74
2006.38    0.326   308.88
2006.48    0.326   309.01
2006.58    0.327   309.14
2006.68    0.327   309.27
2006.78    0.328   309.40
2006.88    0.328   309.53
2006.98    0.329   309.66
2007.08    0.329   309.79
2007.18    0.329   309.92
2007.28    0.330   310.05
2007.38    0.330   310.18
2007.48    0.331   310.31
2007.58    0.331   310.43
2007.68    0.331   310.56
2007.78    0.332   310.69
2007.88    0.332   310.82
2007.98    0.332   310.94
2008.08    0.333   311.07
2008.18    0.333   311.20
2008.28    0.334   311.32
2008.38    0.334   311.45
2008.48    0.334   311.57
2008.58    0.335   311.70
2008.68    0.335   311.82
2008.78    0.335   311.95
2008.88    0.336   312.07
2008.98    0.336   312.20
2009.08    0.336   312.32
2009.18    0.337   312.44
2009.28    0.337   312.57
2009.38    0.337   312.69
2009.48    0.337   312.81
2009.58    0.338   312.94
2009.68    0.338   313.06
2009.78    0.338   313.18
2009.88    0.339   313.30
2009.98    0.339   313.43
2010.08    0.339   313.55
2010.18    0.339   313.67
2010.28    0.340   313.79
2010.38    0.340   313.91
2010.48    0.340   314.03
2010.58    0.340   314.15
2010.68    0.341   314.28
2010.78    0.341   314.40
2010.88    0.341   314.52
2010.98    0.341   314.64
2011.08    0.342   314.76
2011.18    0.342   314.88
2011.28    0.342   315.00
2011.38    0.342   315.12
2011.48    0.343   315.23
2011.58    0.343   315.35
2011.68    0.343   315.47
2011.78    0.343   315.59
2011.88    0.343   315.71
2011.98    0.344   315.83
2012.08    0.344   315.95
2012.18    0.344   316.07
2012.28    0.344   316.18
2012.38    0.344   316.30
2012.48    0.345   316.42
2012.58    0.345   316.54
2012.68    0.345   316.66
2012.78    0.345   316.77
2012.88    0.345   316.89
2012.98    0.345   317.01
2013.08    0.345   317.13
2013.18    0.346   317.24
2013.28    0.346   317.36
2013.38    0.346   317.48
2013.48    0.346   317.60
2013.58    0.346   317.71
2013.68    0.346   317.83
2013.78    0.346   317.95
2013.88    0.347   318.06
2013.98    0.347   318.18
2014.08    0.347   318.30
2014.18    0.347   318.41
2014.28    0.347   318.53
2014.38    0.347   318.64
2014.48    0.347   318.76
2014.58    0.347   318.88
2014.68    0.347   318.99
2014.78    0.347   319.11
2014.88    0.348   319.23
2014.98    0.348   319.34
2015.08    0.348   319.46
2015.18    0.348   319.57
2015.28    0.348   319.69
2015.38    0.348   319.80
2015.48    0.348   319.92
2015.58    0.348   320.04
2015.68    0.348   320.15
2015.78    0.348   320.27
2015.88    0.348   320.38
2015.98    0.348   320.50
2016.08    0.348   320.61
2016.18    0.348   320.73
2016.28    0.348   320.84
2016.38    0.348   320.96
2016.48    0.348   321.08
2016.58    0.348   321.19
2016.68    0.348   321.31
2016.78    0.348   321.42
2016.88    0.348   321.54
2016.98    0.348   321.65
2017.08    0.348   321.77
2017.18    0.348   321.88
2017.28    0.348   322.00
2017.38    0.348   322.11
2017.48    0.348   322.23
2017.58    0.348   322.35
2017.68    0.348   322.46
2017.78    0.348   322.58
2017.88    0.348   322.69
2017.98    0.348   322.81
2018.08    0.348   322.92
2018.18    0.348   323.04
2018.28    0.348   323.15
2018.38    0.348   323.27
2018.48    0.348   323.39
2018.58    0.348   323.50
2018.68    0.348   323.62
2018.78    0.348   323.73
2018.88    0.348   323.85
2018.98    0.348   323.96
2019.08    0.348   324.08
2019.18    0.347   324.20
2019.28    0.347   324.31
2019.38    0.347   324.43
2019.48    0.347   324.54
2019.58    0.347   324.66
2019.68    0.347   324.78
2019.78    0.347   324.89
2019.88    0.347   325.01
2019.98    0.347   325.13
2020.08    0.347   325.24
2020.18    0.346   325.36
2020.28    0.346   325.48
2020.38    0.346   325.59
2020.48    0.346   325.71
2020.58    0.346   325.83
2020.68    0.346   325.94
2020.78    0.346   326.06
2020.88    0.346   326.18
2020.98    0.345   326.30
2021.08    0.345   326.41
2021.18    0.345   326.53
2021.28    0.345   326.65
2021.38    0.345   326.77
2021.48    0.345   326.88
2021.58    0.344   327.00
2021.68    0.344   327.12
2021.78    0.344   327.24
2021.88    0.344   327.36
2021.98    0.344   327.47
2022.08    0.344   327.59
2022.18    0.343   327.71
2022.28    0.343   327.83
2022.38    0.343   327.95
2022.48    0.343   328.07
2022.58    0.343   328.19
2022.68    0.342   328.31
2022.78    0.342   328.43
2022.88    0.342   328.55
2022.98    0.342   328.67
2023.08    0.342   328.79
2023.18    0.341   328.91
2023.28    0.341   329.03
2023.38    0.341   329.15
2023.48    0.341   329.27
2023.58    0.340   329.39
2023.68    0.340   329.51
2023.78    0.340   329.63
2023.88    0.340   329.75
2023.98    0.339   329.87
2024.08    0.339   330.00
2024.18    0.339   330.12
2024.28    0.339   330.24
2024.38    0.338   330.36
2024.48    0.338   330.48
2024.58    0.338   330.61
2024.68    0.338   330.73
2024.78    0.337   330.85
2024.88    0.337   330.98
2024.98    0.337   331.10
2025.08    0.336   331.22
2025.18    0.336   331.35
2025.28    0.336   331.47
2025.38    0.336   331.59
2025.48    0.335   331.72
2025.58    0.335   331.84
2025.68    0.335   331.97
2025.78    0.334   332.09
2025.88    0.334   332.22
2025.98    0.334   332.35
2026.08    0.333   332.47
2026.18    0.333   332.60
2026.28    0.333   332.72
2026.38    0.332   332.85
2026.48    0.332   332.98
2026.58    0.332   333.10
2026.68    0.331   333.23
2026.78    0.331   333.36
2026.88    0.331   333.49
2026.98    0.330   333.62
2027.08    0.330   333.74
2027.18    0.330   333.87
2027.28    0.329   334.00
2027.38    0.329   334.13
2027.48    0.328   334.26
2027.58    0.328   334.39
2027.68    0.328   334.52
2027.78    0.327   334.65
2027.88    0.327   334.78
2027.98    0.327   334.91
2028.08    0.326   335.05
2028.18    0.326   335.18
2028.28    0.325   335.31
2028.38    0.325   335.44
2028.48    0.325   335.57
2028.58    0.324   335.71
2028.68    0.324   335.84
2028.78    0.323   335.98
2028.88    0.323   336.11
2028.98    0.322   336.24
2029.08    0.322   336.38
2029.18    0.322   336.51
2029.28    0.321   336.65
2029.38    0.321   336.79
2029.48    0.320   336.92
2029.58    0.320   337.06
2029.68    0.319   337.20
2029.78    0.319   337.33
2029.88    0.318   337.47
2029.98    0.318   337.61
2030.08    0.317   337.75
2030.18    0.317   337.89
2030.28    0.317   338.03
2030.38    0.316   338.17
2030.48    0.316   338.31
2030.58    0.315   338.45
2030.68    0.315   338.59
2030.78    0.314   338.73
2030.88    0.314   338.87
2030.98    0.313   339.02
2031.08    0.313   339.16
2031.18    0.312   339.30
2031.28    0.312   339.45
2031.38    0.311   339.59
2031.48    0.310   339.74
2031.58    0.310   339.88
2031.68    0.309   340.03
2031.78    0.309   340.18
2031.88    0.308   340.32
2031.98    0.308   340.47
2032.08    0.307   340.62
2032.18    0.307   340.77
2032.28    0.306   340.92
2032.38    0.306   341.07
2032.48    0.305   341.22
2032.58    0.305   341.37
2032.68    0.304   341.52
2032.78    0.303   341.67
2032.88    0.303   341.82
2032.98    0.302   341.97
2033.08    0.302   342.13
2033.18    0.301   342.28
2033.28    0.300   342.44
2033.38    0.300   342.59
2033.48    0.299   342.75
2033.58    0.299   342.91
2033.68    0.298   343.06
2033.78    0.297   343.22
2033.88    0.297   343.38
2033.98    0.296   343.54
2034.08    0.296   343.70
2034.18    0.295   343.86
2034.28    0.294   344.02
2034.38    0.294   344.18
2034.48    0.293   344.35
2034.58    0.292   344.51
2034.68    0.292   344.67
2034.78    0.291   344.84
2034.88    0.290   345.00
2034.98    0.290   345.17
2035.08    0.289   345.34
2035.18    0.288   345.50
2035.28    0.288   345.67
2035.38    0.287   345.84
2035.48    0.286   346.01
2035.58    0.286   346.18
2035.68    0.285   346.36
2035.78    0.284   346.53
2035.88    0.284   346.70
2035.98    0.283   346.88
2036.08    0.282   347.05
2036.18    0.282   347.23
2036.28    0.281   347.41
2036.38    0.280   347.58
2036.48    0.279   347.76
2036.58    0.279   347.94
2036.68    0.278   348.12
2036.78    0.277   348.31
2036.88    0.276   348.49
2036.98    0.276   348.67
2037.08    0.275   348.86
2037.18    0.274   349.04
2037.28    0.273   349.23
2037.38    0.273   349.42
2037.48    0.272   349.61
2037.58    0.271   349.80
2037.68    0.270   349.99
2037.78    0.270   350.18
2037.88    0.269   350.37
2037.98    0.268   350.57
2038.08    0.267   350.76
2038.18    0.266   350.96
2038.28    0.266   351.16
2038.38    0.265   351.36
2038.48    0.264   351.56
2038.58    0.263   351.76
2038.68    0.262   351.96
2038.78    0.262   352.16
2038.88    0.261   352.37
2038.98    0.260   352.58
2039.08    0.259   352.78
2039.18    0.258   352.99
2039.28    0.257   353.20
2039.38    0.256   353.42
2039.48    0.256   353.63
2039.58    0.255   353.85
2039.68    0.254   354.06
2039.78    0.253   354.28
2039.88    0.252   354.50
2039.98    0.251   354.72
2040.08    0.250   354.94
2040.18    0.249   355.17
2040.28    0.248   355.39
2040.38    0.248   355.62
2040.48    0.247   355.85
2040.58    0.246   356.08
2040.68    0.245   356.32
2040.78    0.244   356.55
2040.88    0.243   356.79
2040.98    0.242   357.02
2041.08    0.241   357.27
2041.18    0.240   357.51
2041.28    0.239   357.75
2041.38    0.238   358.00
2041.48    0.237   358.24
2041.58    0.236   358.49
2041.68    0.235   358.75
2041.78    0.234   359.00
2041.88    0.233   359.26
2041.98    0.232   359.52
2042.08    0.231   359.78
2042.18    0.230     0.04
2042.28    0.229     0.31
2042.38    0.228     0.57
2042.48    0.227     0.84
2042.58    0.226     1.12
2042.68    0.225     1.39
2042.78    0.224     1.67
2042.88    0.223     1.95
2042.98    0.222     2.23
2043.08    0.221     2.52
2043.18    0.220     2.81
2043.28    0.219     3.10
2043.38    0.218     3.39
2043.48    0.216     3.69
2043.58    0.215     3.99
2043.68    0.214     4.29
2043.78    0.213     4.60
2043.88    0.212     4.91
2043.98    0.211     5.22
2044.08    0.210     5.54
2044.18    0.209     5.86
2044.28    0.207     6.18
2044.38    0.206     6.51
2044.48    0.205     6.84
2044.58    0.204     7.18
2044.68    0.203     7.52
2044.78    0.202     7.86
2044.88    0.200     8.20
2044.98    0.199     8.56
2045.08    0.198     8.91
2045.18    0.197     9.27
2045.28    0.195     9.63
2045.38    0.194    10.00
2045.48    0.193    10.38
2045.58    0.192    10.76
2045.68    0.190    11.14
2045.78    0.189    11.53
2045.88    0.188    11.92
2045.98    0.187    12.32
2046.08    0.185    12.73
2046.18    0.184    13.14
2046.28    0.183    13.55
2046.38    0.181    13.98
2046.48    0.180    14.40
2046.58    0.179    14.84
2046.68    0.177    15.28
2046.78    0.176    15.73
2046.88    0.175    16.19
2046.98    0.173    16.65
2047.08    0.172    17.12
2047.18    0.170    17.60
2047.28    0.169    18.09
2047.38    0.167    18.58
2047.48    0.166    19.09
2047.58    0.165    19.60
2047.68    0.163    20.12
2047.78    0.162    20.65
2047.88    0.160    21.20
2047.98    0.159    21.75
2048.08    0.157    22.31
2048.18    0.155    22.89
2048.28    0.154    23.47
2048.38    0.152    24.07
2048.48    0.151    24.68
2048.58    0.149    25.30
2048.68    0.147    25.94
2048.78    0.146    26.59
2048.88    0.144    27.26
2048.98    0.142    27.94
2049.08    0.141    28.64
2049.18    0.139    29.35
2049.28    0.137    30.09
2049.38    0.136    30.84
2049.48    0.134    31.61
2049.58    0.132    32.40
2049.68    0.130    33.22
2049.78    0.128    34.06
2049.88    0.126    34.92
2049.98    0.125    35.81
2050.08    0.123    36.73
2050.18    0.121    37.68
2050.28    0.119    38.65
2050.38    0.117    39.67
2050.48    0.115    40.71
2050.58    0.112    41.80
2050.68    0.110    42.93
2050.78    0.108    44.10
2050.88    0.106    45.32
2050.98    0.104    46.60
2051.08    0.101    47.93
2051.18    0.099    49.32
2051.28    0.097    50.78
2051.38    0.094    52.31
2051.48    0.092    53.93
2051.58    0.089    55.65
2051.68    0.087    57.46
2051.78    0.084    59.39
2051.88    0.081    61.46
2051.98    0.078    63.67
2052.08    0.075    66.06
2052.18    0.072    68.65
2052.28    0.069    71.47
2052.38    0.066    74.58
2052.48    0.062    78.02
2052.58    0.059    81.87
2052.68    0.055    86.23
2052.78    0.051    91.21
2052.88    0.047    96.98
2052.98    0.044   103.73
2053.08    0.040   111.72
2053.18    0.037   121.18
2053.28    0.034   132.26
2053.38    0.033   144.84
2053.48    0.032   158.34
2053.58    0.033   171.81
2053.68    0.035   184.27
2053.78    0.037   195.18
2053.88    0.041   204.40
2053.98    0.045   212.09
2054.08    0.049   218.51
2054.18    0.053   223.92
2054.28    0.057   228.52
2054.38    0.062   232.48
2054.48    0.066   235.93
2054.58    0.070   238.96
2054.68    0.074   241.66
2054.78    0.078   244.09
2054.88    0.082   246.28
2054.98    0.086   248.27
2055.08    0.089   250.10
2055.18    0.093   251.78
2055.28    0.096   253.35
2055.38    0.100   254.80
2055.48    0.103   256.16
2055.58    0.107   257.43
2055.68    0.110   258.63
2055.78    0.113   259.76
2055.88    0.116   260.83
2055.98    0.119   261.85
2056.08    0.122   262.81
2056.18    0.125   263.74
2056.28    0.127   264.62
2056.38    0.130   265.46
2056.48    0.133   266.27
2056.58    0.136   267.05
2056.68    0.138   267.79
2056.78    0.141   268.52
2056.88    0.143   269.21
2056.98    0.146   269.88
2057.08    0.148   270.53
2057.18    0.151   271.16
2057.28    0.153   271.77
2057.38    0.155   272.36
2057.48    0.157   272.93
2057.58    0.160   273.49
2057.68    0.162   274.03
2057.78    0.164   274.55
2057.88    0.166   275.07
2057.98    0.168   275.57
2058.08    0.170   276.06
2058.18    0.172   276.53
2058.28    0.175   277.00
2058.38    0.177   277.45






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 14:36:35



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