Double Star Calculator - Orbit

Orbital Elements for A351AB
WDS: A351AB WDS ID/Discoverer
P: 59.000 Orbital period (years)
a: 0.65 Semi-major axis (arcseconds)
i: 81.0 Inclination (degrees)
Ω: 66.0 Longitude of ascending node (degrees)
T: 1972.000 Epoch of periastron passage (year)
e: 0.19 Eccentricity
ω: 64.0 Longitude of periastron (degrees)
Start-Year: 1995.5 Year
End-Year: 2054.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A351AB
Position: 172920.05+292330.8 Epoch-2000 right ascension and declination
WDS-ID: 17293+2924 WDS designation
Discoverer Code: A351AB Discover designation and components
ADS number: 10585 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 85582 Hipparcos catalog number
V1: 9.70 Magnitude of the primary
V2: 9.95 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: Sod1999 Reference

Double Star Orbit for A351AB



WDS 6th Orbit including measures of A351AB

-- 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 A351AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.501    69.98
--------------------------
1995.50    0.598   253.02
1995.60    0.595   253.13
1995.70    0.592   253.25
1995.80    0.589   253.36
1995.90    0.586   253.48
1996.00    0.583   253.59
1996.10    0.579   253.71
1996.20    0.576   253.83
1996.30    0.573   253.95
1996.40    0.569   254.07
1996.50    0.566   254.19
1996.60    0.562   254.32
1996.70    0.559   254.44
1996.80    0.555   254.57
1996.90    0.552   254.70
1997.00    0.548   254.83
1997.10    0.545   254.96
1997.20    0.541   255.10
1997.30    0.537   255.23
1997.40    0.534   255.37
1997.50    0.530   255.51
1997.60    0.526   255.65
1997.70    0.522   255.80
1997.80    0.518   255.94
1997.90    0.514   256.09
1998.00    0.510   256.24
1998.10    0.506   256.40
1998.20    0.502   256.55
1998.30    0.498   256.71
1998.40    0.494   256.87
1998.50    0.490   257.03
1998.60    0.486   257.20
1998.70    0.482   257.37
1998.80    0.478   257.54
1998.90    0.474   257.72
1999.00    0.469   257.89
1999.10    0.465   258.07
1999.20    0.461   258.26
1999.30    0.457   258.45
1999.40    0.452   258.64
1999.50    0.448   258.83
1999.60    0.444   259.03
1999.70    0.439   259.24
1999.80    0.435   259.44
1999.90    0.430   259.66
2000.00    0.426   259.87
2000.10    0.421   260.09
2000.20    0.417   260.32
2000.30    0.412   260.55
2000.40    0.408   260.78
2000.50    0.403   261.03
2000.60    0.398   261.27
2000.70    0.394   261.53
2000.80    0.389   261.78
2000.90    0.384   262.05
2001.00    0.380   262.32
2001.10    0.375   262.60
2001.20    0.370   262.88
2001.30    0.366   263.17
2001.40    0.361   263.47
2001.50    0.356   263.78
2001.60    0.351   264.10
2001.70    0.347   264.42
2001.80    0.342   264.76
2001.90    0.337   265.10
2002.00    0.332   265.46
2002.10    0.327   265.82
2002.20    0.322   266.20
2002.30    0.318   266.58
2002.40    0.313   266.98
2002.50    0.308   267.39
2002.60    0.303   267.82
2002.70    0.298   268.26
2002.80    0.293   268.71
2002.90    0.288   269.18
2003.00    0.284   269.66
2003.10    0.279   270.16
2003.20    0.274   270.68
2003.30    0.269   271.22
2003.40    0.264   271.78
2003.50    0.259   272.35
2003.60    0.254   272.95
2003.70    0.250   273.58
2003.80    0.245   274.23
2003.90    0.240   274.90
2004.00    0.235   275.60
2004.10    0.230   276.33
2004.20    0.226   277.09
2004.30    0.221   277.89
2004.40    0.216   278.71
2004.50    0.212   279.58
2004.60    0.207   280.48
2004.70    0.203   281.42
2004.80    0.198   282.41
2004.90    0.194   283.44
2005.00    0.189   284.53
2005.10    0.185   285.66
2005.20    0.180   286.85
2005.30    0.176   288.09
2005.40    0.172   289.40
2005.50    0.168   290.77
2005.60    0.164   292.20
2005.70    0.160   293.71
2005.80    0.156   295.29
2005.90    0.153   296.95
2006.00    0.149   298.69
2006.10    0.146   300.51
2006.20    0.142   302.42
2006.30    0.139   304.42
2006.40    0.136   306.50
2006.50    0.134   308.68
2006.60    0.131   310.94
2006.70    0.129   313.29
2006.80    0.126   315.72
2006.90    0.125   318.24
2007.00    0.123   320.83
2007.10    0.121   323.48
2007.20    0.120   326.20
2007.30    0.119   328.96
2007.40    0.119   331.75
2007.50    0.118   334.58
2007.60    0.118   337.41
2007.70    0.118   340.24
2007.80    0.119   343.06
2007.90    0.120   345.84
2008.00    0.121   348.59
2008.10    0.122   351.29
2008.20    0.123   353.92
2008.30    0.125   356.48
2008.40    0.127   358.97
2008.50    0.129     1.38
2008.60    0.132     3.70
2008.70    0.135     5.93
2008.80    0.137     8.07
2008.90    0.140    10.13
2009.00    0.144    12.09
2009.10    0.147    13.97
2009.20    0.150    15.77
2009.30    0.154    17.48
2009.40    0.158    19.11
2009.50    0.161    20.67
2009.60    0.165    22.16
2009.70    0.169    23.57
2009.80    0.173    24.92
2009.90    0.178    26.21
2010.00    0.182    27.43
2010.10    0.186    28.60
2010.20    0.191    29.72
2010.30    0.195    30.78
2010.40    0.199    31.80
2010.50    0.204    32.78
2010.60    0.208    33.71
2010.70    0.213    34.60
2010.80    0.218    35.45
2010.90    0.222    36.27
2011.00    0.227    37.06
2011.10    0.232    37.81
2011.20    0.236    38.53
2011.30    0.241    39.23
2011.40    0.246    39.89
2011.50    0.251    40.53
2011.60    0.256    41.15
2011.70    0.260    41.75
2011.80    0.265    42.32
2011.90    0.270    42.88
2012.00    0.275    43.41
2012.10    0.279    43.93
2012.20    0.284    44.42
2012.30    0.289    44.91
2012.40    0.294    45.37
2012.50    0.299    45.82
2012.60    0.303    46.26
2012.70    0.308    46.68
2012.80    0.313    47.09
2012.90    0.318    47.49
2013.00    0.322    47.88
2013.10    0.327    48.25
2013.20    0.332    48.62
2013.30    0.337    48.97
2013.40    0.341    49.32
2013.50    0.346    49.65
2013.60    0.350    49.98
2013.70    0.355    50.30
2013.80    0.360    50.61
2013.90    0.364    50.91
2014.00    0.369    51.21
2014.10    0.373    51.49
2014.20    0.378    51.77
2014.30    0.382    52.05
2014.40    0.387    52.32
2014.50    0.391    52.58
2014.60    0.396    52.83
2014.70    0.400    53.08
2014.80    0.404    53.33
2014.90    0.409    53.57
2015.00    0.413    53.80
2015.10    0.417    54.03
2015.20    0.421    54.26
2015.30    0.425    54.48
2015.40    0.430    54.70
2015.50    0.434    54.91
2015.60    0.438    55.12
2015.70    0.442    55.32
2015.80    0.446    55.52
2015.90    0.450    55.72
2016.00    0.454    55.92
2016.10    0.457    56.11
2016.20    0.461    56.29
2016.30    0.465    56.48
2016.40    0.469    56.66
2016.50    0.472    56.84
2016.60    0.476    57.02
2016.70    0.480    57.19
2016.80    0.483    57.36
2016.90    0.487    57.53
2017.00    0.490    57.69
2017.10    0.494    57.86
2017.20    0.497    58.02
2017.30    0.500    58.18
2017.40    0.504    58.34
2017.50    0.507    58.49
2017.60    0.510    58.64
2017.70    0.513    58.80
2017.80    0.516    58.94
2017.90    0.519    59.09
2018.00    0.522    59.24
2018.10    0.525    59.38
2018.20    0.528    59.53
2018.30    0.531    59.67
2018.40    0.533    59.81
2018.50    0.536    59.95
2018.60    0.539    60.08
2018.70    0.541    60.22
2018.80    0.544    60.35
2018.90    0.546    60.49
2019.00    0.548    60.62
2019.10    0.551    60.75
2019.20    0.553    60.88
2019.30    0.555    61.01
2019.40    0.557    61.14
2019.50    0.559    61.26
2019.60    0.561    61.39
2019.70    0.563    61.52
2019.80    0.565    61.64
2019.90    0.567    61.76
2020.00    0.568    61.89
2020.10    0.570    62.01
2020.20    0.571    62.13
2020.30    0.573    62.25
2020.40    0.574    62.37
2020.50    0.576    62.49
2020.60    0.577    62.61
2020.70    0.578    62.73
2020.80    0.579    62.85
2020.90    0.580    62.97
2021.00    0.581    63.08
2021.10    0.582    63.20
2021.20    0.583    63.32
2021.30    0.584    63.43
2021.40    0.584    63.55
2021.50    0.585    63.67
2021.60    0.585    63.78
2021.70    0.586    63.90
2021.80    0.586    64.01
2021.90    0.586    64.13
2022.00    0.586    64.24
2022.10    0.587    64.36
2022.20    0.587    64.47
2022.30    0.586    64.59
2022.40    0.586    64.70
2022.50    0.586    64.82
2022.60    0.586    64.93
2022.70    0.585    65.05
2022.80    0.585    65.17
2022.90    0.584    65.28
2023.00    0.583    65.40
2023.10    0.583    65.51
2023.20    0.582    65.63
2023.30    0.581    65.75
2023.40    0.580    65.87
2023.50    0.579    65.98
2023.60    0.577    66.10
2023.70    0.576    66.22
2023.80    0.575    66.34
2023.90    0.573    66.46
2024.00    0.571    66.58
2024.10    0.570    66.70
2024.20    0.568    66.83
2024.30    0.566    66.95
2024.40    0.564    67.07
2024.50    0.562    67.20
2024.60    0.560    67.32
2024.70    0.558    67.45
2024.80    0.555    67.58
2024.90    0.553    67.71
2025.00    0.550    67.84
2025.10    0.548    67.97
2025.20    0.545    68.10
2025.30    0.542    68.24
2025.40    0.539    68.37
2025.50    0.536    68.51
2025.60    0.533    68.65
2025.70    0.530    68.79
2025.80    0.527    68.93
2025.90    0.523    69.07
2026.00    0.520    69.22
2026.10    0.516    69.37
2026.20    0.513    69.51
2026.30    0.509    69.67
2026.40    0.505    69.82
2026.50    0.501    69.98
2026.60    0.497    70.14
2026.70    0.493    70.30
2026.80    0.489    70.46
2026.90    0.484    70.63
2027.00    0.480    70.80
2027.10    0.476    70.97
2027.20    0.471    71.15
2027.30    0.466    71.33
2027.40    0.462    71.51
2027.50    0.457    71.70
2027.60    0.452    71.89
2027.70    0.447    72.09
2027.80    0.442    72.29
2027.90    0.437    72.50
2028.00    0.431    72.71
2028.10    0.426    72.92
2028.20    0.421    73.14
2028.30    0.415    73.37
2028.40    0.410    73.60
2028.50    0.404    73.84
2028.60    0.398    74.09
2028.70    0.392    74.34
2028.80    0.386    74.60
2028.90    0.381    74.87
2029.00    0.375    75.15
2029.10    0.368    75.44
2029.20    0.362    75.73
2029.30    0.356    76.04
2029.40    0.350    76.36
2029.50    0.343    76.69
2029.60    0.337    77.03
2029.70    0.331    77.39
2029.80    0.324    77.75
2029.90    0.318    78.14
2030.00    0.311    78.54
2030.10    0.304    78.96
2030.20    0.298    79.40
2030.30    0.291    79.85
2030.40    0.284    80.33
2030.50    0.277    80.84
2030.60    0.270    81.37
2030.70    0.263    81.92
2030.80    0.256    82.51
2030.90    0.249    83.13
2031.00    0.242    83.78
2031.10    0.235    84.48
2031.20    0.228    85.21
2031.30    0.221    86.00
2031.40    0.214    86.83
2031.50    0.207    87.72
2031.60    0.200    88.68
2031.70    0.193    89.70
2031.80    0.186    90.80
2031.90    0.179    91.99
2032.00    0.172    93.27
2032.10    0.166    94.66
2032.20    0.159    96.17
2032.30    0.152    97.81
2032.40    0.145    99.60
2032.50    0.139   101.56
2032.60    0.133   103.70
2032.70    0.127   106.06
2032.80    0.121   108.66
2032.90    0.115   111.51
2033.00    0.110   114.66
2033.10    0.105   118.12
2033.20    0.100   121.92
2033.30    0.096   126.07
2033.40    0.092   130.57
2033.50    0.089   135.42
2033.60    0.087   140.57
2033.70    0.085   145.97
2033.80    0.084   151.55
2033.90    0.084   157.19
2034.00    0.084   162.80
2034.10    0.086   168.27
2034.20    0.088   173.52
2034.30    0.091   178.48
2034.40    0.094   183.10
2034.50    0.098   187.38
2034.60    0.103   191.29
2034.70    0.108   194.87
2034.80    0.113   198.12
2034.90    0.119   201.07
2035.00    0.124   203.76
2035.10    0.131   206.19
2035.20    0.137   208.41
2035.30    0.143   210.43
2035.40    0.150   212.28
2035.50    0.156   213.96
2035.60    0.163   215.51
2035.70    0.170   216.94
2035.80    0.177   218.25
2035.90    0.184   219.47
2036.00    0.191   220.60
2036.10    0.198   221.64
2036.20    0.205   222.62
2036.30    0.212   223.53
2036.40    0.219   224.38
2036.50    0.226   225.18
2036.60    0.234   225.93
2036.70    0.241   226.63
2036.80    0.248   227.29
2036.90    0.255   227.92
2037.00    0.262   228.52
2037.10    0.269   229.08
2037.20    0.276   229.61
2037.30    0.283   230.12
2037.40    0.290   230.60
2037.50    0.297   231.06
2037.60    0.304   231.50
2037.70    0.311   231.92
2037.80    0.317   232.32
2037.90    0.324   232.71
2038.00    0.331   233.08
2038.10    0.338   233.43
2038.20    0.344   233.77
2038.30    0.351   234.10
2038.40    0.358   234.42
2038.50    0.364   234.72
2038.60    0.371   235.01
2038.70    0.377   235.30
2038.80    0.383   235.57
2038.90    0.390   235.84
2039.00    0.396   236.09
2039.10    0.402   236.34
2039.20    0.408   236.58
2039.30    0.414   236.82
2039.40    0.421   237.04
2039.50    0.427   237.26
2039.60    0.432   237.48
2039.70    0.438   237.69
2039.80    0.444   237.89
2039.90    0.450   238.09
2040.00    0.456   238.28
2040.10    0.461   238.47
2040.20    0.467   238.65
2040.30    0.472   238.83
2040.40    0.478   239.01
2040.50    0.483   239.18
2040.60    0.488   239.35
2040.70    0.494   239.51
2040.80    0.499   239.67
2040.90    0.504   239.83
2041.00    0.509   239.98
2041.10    0.514   240.14
2041.20    0.519   240.28
2041.30    0.524   240.43
2041.40    0.529   240.57
2041.50    0.533   240.71
2041.60    0.538   240.85
2041.70    0.543   240.99
2041.80    0.547   241.12
2041.90    0.552   241.25
2042.00    0.556   241.38
2042.10    0.560   241.51
2042.20    0.565   241.63
2042.30    0.569   241.76
2042.40    0.573   241.88
2042.50    0.577   242.00
2042.60    0.581   242.12
2042.70    0.585   242.23
2042.80    0.589   242.35
2042.90    0.592   242.46
2043.00    0.596   242.57
2043.10    0.600   242.68
2043.20    0.603   242.79
2043.30    0.607   242.90
2043.40    0.610   243.01
2043.50    0.614   243.11
2043.60    0.617   243.22
2043.70    0.620   243.32
2043.80    0.623   243.42
2043.90    0.626   243.53
2044.00    0.629   243.63
2044.10    0.632   243.73
2044.20    0.635   243.82
2044.30    0.638   243.92
2044.40    0.641   244.02
2044.50    0.643   244.11
2044.60    0.646   244.21
2044.70    0.648   244.30
2044.80    0.651   244.40
2044.90    0.653   244.49
2045.00    0.656   244.58
2045.10    0.658   244.68
2045.20    0.660   244.77
2045.30    0.662   244.86
2045.40    0.664   244.95
2045.50    0.666   245.04
2045.60    0.668   245.13
2045.70    0.670   245.21
2045.80    0.672   245.30
2045.90    0.673   245.39
2046.00    0.675   245.48
2046.10    0.676   245.56
2046.20    0.678   245.65
2046.30    0.679   245.74
2046.40    0.681   245.82
2046.50    0.682   245.91
2046.60    0.683   245.99
2046.70    0.685   246.08
2046.80    0.686   246.16
2046.90    0.687   246.25
2047.00    0.688   246.33
2047.10    0.689   246.41
2047.20    0.689   246.50
2047.30    0.690   246.58
2047.40    0.691   246.66
2047.50    0.692   246.75
2047.60    0.692   246.83
2047.70    0.693   246.91
2047.80    0.693   246.99
2047.90    0.694   247.08
2048.00    0.694   247.16
2048.10    0.694   247.24
2048.20    0.695   247.32
2048.30    0.695   247.40
2048.40    0.695   247.49
2048.50    0.695   247.57
2048.60    0.695   247.65
2048.70    0.695   247.73
2048.80    0.695   247.81
2048.90    0.694   247.90
2049.00    0.694   247.98
2049.10    0.694   248.06
2049.20    0.694   248.14
2049.30    0.693   248.23
2049.40    0.693   248.31
2049.50    0.692   248.39
2049.60    0.691   248.47
2049.70    0.691   248.56
2049.80    0.690   248.64
2049.90    0.689   248.72
2050.00    0.688   248.81
2050.10    0.688   248.89
2050.20    0.687   248.97
2050.30    0.686   249.06
2050.40    0.685   249.14
2050.50    0.683   249.23
2050.60    0.682   249.31
2050.70    0.681   249.40
2050.80    0.680   249.48
2050.90    0.679   249.57
2051.00    0.677   249.65
2051.10    0.676   249.74
2051.20    0.674   249.83
2051.30    0.673   249.91
2051.40    0.671   250.00
2051.50    0.670   250.09
2051.60    0.668   250.18
2051.70    0.666   250.27
2051.80    0.664   250.36
2051.90    0.662   250.45
2052.00    0.661   250.54
2052.10    0.659   250.63
2052.20    0.657   250.72
2052.30    0.655   250.81
2052.40    0.653   250.91
2052.50    0.650   251.00
2052.60    0.648   251.09
2052.70    0.646   251.19
2052.80    0.644   251.28
2052.90    0.641   251.38
2053.00    0.639   251.47
2053.10    0.637   251.57
2053.20    0.634   251.67
2053.30    0.632   251.77
2053.40    0.629   251.87
2053.50    0.627   251.97
2053.60    0.624   252.07
2053.70    0.621   252.17
2053.80    0.619   252.28
2053.90    0.616   252.38
2054.00    0.613   252.48
2054.10    0.610   252.59
2054.20    0.607   252.70
2054.30    0.604   252.80
2054.40    0.601   252.91






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 17:39:05



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