Double Star Calculator - Orbit

Orbital Elements for BAG18
WDS: BAG18 WDS ID/Discoverer
P: 66.620 Orbital period (years)
a: 0.531 Semi-major axis (arcseconds)
i: 167.7 Inclination (degrees)
Ω: 142.2 Longitude of ascending node (degrees)
T: 1990.250 Epoch of periastron passage (year)
e: 0.372 Eccentricity
ω: 358.9 Longitude of periastron (degrees)
Start-Year: 1991.69 Year
End-Year: 2058.31 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BAG18
Position: 000048.09+165917.5 Epoch-2000 right ascension and declination
WDS-ID: 00008+1659 WDS designation
Discoverer Code: BAG18 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 8.79 Magnitude of the primary
V2: 12.6 Magnitude of the secondary
Equinox: Equinox
Date: 2018 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Tok2019c Reference

Double Star Orbit for BAG18



WDS 6th Orbit including measures of BAG18

-- 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 BAG18
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.724   315.59
--------------------------
1991.69    0.337   125.52
1991.79    0.338   124.31
1991.89    0.338   123.10
1991.99    0.339   121.90
1992.09    0.340   120.70
1992.19    0.340   119.50
1992.29    0.341   118.31
1992.39    0.342   117.13
1992.49    0.343   115.95
1992.59    0.344   114.78
1992.69    0.344   113.61
1992.79    0.345   112.45
1992.89    0.346   111.29
1992.99    0.347   110.14
1993.09    0.348   109.00
1993.19    0.349   107.86
1993.29    0.350   106.73
1993.39    0.351   105.60
1993.49    0.352   104.49
1993.59    0.353   103.38
1993.69    0.355   102.28
1993.79    0.356   101.18
1993.89    0.357   100.09
1993.99    0.358    99.01
1994.09    0.359    97.94
1994.19    0.361    96.87
1994.29    0.362    95.81
1994.39    0.363    94.76
1994.49    0.365    93.72
1994.59    0.366    92.69
1994.69    0.368    91.66
1994.79    0.369    90.64
1994.89    0.370    89.63
1994.99    0.372    88.63
1995.09    0.373    87.63
1995.19    0.375    86.64
1995.29    0.376    85.67
1995.39    0.378    84.69
1995.49    0.380    83.73
1995.59    0.381    82.78
1995.69    0.383    81.83
1995.79    0.384    80.89
1995.89    0.386    79.96
1995.99    0.388    79.03
1996.09    0.389    78.12
1996.19    0.391    77.21
1996.29    0.393    76.31
1996.39    0.394    75.42
1996.49    0.396    74.54
1996.59    0.398    73.66
1996.69    0.400    72.79
1996.79    0.401    71.93
1996.89    0.403    71.08
1996.99    0.405    70.23
1997.09    0.407    69.39
1997.19    0.409    68.56
1997.29    0.411    67.74
1997.39    0.412    66.92
1997.49    0.414    66.11
1997.59    0.416    65.31
1997.69    0.418    64.52
1997.79    0.420    63.73
1997.89    0.422    62.95
1997.99    0.424    62.18
1998.09    0.426    61.41
1998.19    0.427    60.65
1998.29    0.429    59.90
1998.39    0.431    59.15
1998.49    0.433    58.41
1998.59    0.435    57.68
1998.69    0.437    56.95
1998.79    0.439    56.23
1998.89    0.441    55.52
1998.99    0.443    54.81
1999.09    0.445    54.11
1999.19    0.447    53.41
1999.29    0.449    52.72
1999.39    0.451    52.04
1999.49    0.453    51.36
1999.59    0.455    50.69
1999.69    0.457    50.02
1999.79    0.459    49.36
1999.89    0.461    48.71
1999.99    0.462    48.06
2000.09    0.464    47.42
2000.19    0.466    46.78
2000.29    0.468    46.15
2000.39    0.470    45.52
2000.49    0.472    44.90
2000.59    0.474    44.28
2000.69    0.476    43.67
2000.79    0.478    43.06
2000.89    0.480    42.46
2000.99    0.482    41.87
2001.09    0.484    41.27
2001.19    0.486    40.69
2001.29    0.488    40.10
2001.39    0.490    39.53
2001.49    0.492    38.95
2001.59    0.494    38.38
2001.69    0.496    37.82
2001.79    0.498    37.26
2001.89    0.500    36.70
2001.99    0.502    36.15
2002.09    0.504    35.61
2002.19    0.506    35.06
2002.29    0.508    34.53
2002.39    0.509    33.99
2002.49    0.511    33.46
2002.59    0.513    32.93
2002.69    0.515    32.41
2002.79    0.517    31.89
2002.89    0.519    31.38
2002.99    0.521    30.87
2003.09    0.523    30.36
2003.19    0.525    29.86
2003.29    0.527    29.36
2003.39    0.528    28.86
2003.49    0.530    28.37
2003.59    0.532    27.88
2003.69    0.534    27.39
2003.79    0.536    26.91
2003.89    0.538    26.43
2003.99    0.540    25.95
2004.09    0.541    25.48
2004.19    0.543    25.01
2004.29    0.545    24.54
2004.39    0.547    24.08
2004.49    0.549    23.62
2004.59    0.551    23.16
2004.69    0.552    22.71
2004.79    0.554    22.25
2004.89    0.556    21.81
2004.99    0.558    21.36
2005.09    0.559    20.92
2005.19    0.561    20.48
2005.29    0.563    20.04
2005.39    0.565    19.61
2005.49    0.566    19.17
2005.59    0.568    18.74
2005.69    0.570    18.32
2005.79    0.572    17.89
2005.89    0.573    17.47
2005.99    0.575    17.05
2006.09    0.577    16.64
2006.19    0.578    16.22
2006.29    0.580    15.81
2006.39    0.582    15.40
2006.49    0.583    14.99
2006.59    0.585    14.59
2006.69    0.587    14.19
2006.79    0.588    13.78
2006.89    0.590    13.39
2006.99    0.592    12.99
2007.09    0.593    12.60
2007.19    0.595    12.21
2007.29    0.596    11.82
2007.39    0.598    11.43
2007.49    0.600    11.04
2007.59    0.601    10.66
2007.69    0.603    10.28
2007.79    0.604     9.90
2007.89    0.606     9.52
2007.99    0.607     9.15
2008.09    0.609     8.77
2008.19    0.610     8.40
2008.29    0.612     8.03
2008.39    0.613     7.66
2008.49    0.615     7.30
2008.59    0.616     6.93
2008.69    0.618     6.57
2008.79    0.619     6.21
2008.89    0.621     5.85
2008.99    0.622     5.49
2009.09    0.624     5.13
2009.19    0.625     4.78
2009.29    0.626     4.43
2009.39    0.628     4.07
2009.49    0.629     3.72
2009.59    0.631     3.38
2009.69    0.632     3.03
2009.79    0.633     2.68
2009.89    0.635     2.34
2009.99    0.636     2.00
2010.09    0.637     1.66
2010.19    0.639     1.32
2010.29    0.640     0.98
2010.39    0.641     0.64
2010.49    0.643     0.31
2010.59    0.644   359.97
2010.69    0.645   359.64
2010.79    0.647   359.31
2010.89    0.648   358.98
2010.99    0.649   358.65
2011.09    0.650   358.32
2011.19    0.652   358.00
2011.29    0.653   357.67
2011.39    0.654   357.35
2011.49    0.655   357.03
2011.59    0.656   356.71
2011.69    0.658   356.39
2011.79    0.659   356.07
2011.89    0.660   355.75
2011.99    0.661   355.43
2012.09    0.662   355.12
2012.19    0.663   354.80
2012.29    0.665   354.49
2012.39    0.666   354.18
2012.49    0.667   353.87
2012.59    0.668   353.56
2012.69    0.669   353.25
2012.79    0.670   352.94
2012.89    0.671   352.63
2012.99    0.672   352.32
2013.09    0.673   352.02
2013.19    0.674   351.72
2013.29    0.675   351.41
2013.39    0.676   351.11
2013.49    0.677   350.81
2013.59    0.678   350.51
2013.69    0.679   350.21
2013.79    0.680   349.91
2013.89    0.681   349.61
2013.99    0.682   349.31
2014.09    0.683   349.02
2014.19    0.684   348.72
2014.29    0.685   348.43
2014.39    0.686   348.13
2014.49    0.687   347.84
2014.59    0.688   347.55
2014.69    0.689   347.25
2014.79    0.690   346.96
2014.89    0.691   346.67
2014.99    0.691   346.38
2015.09    0.692   346.10
2015.19    0.693   345.81
2015.29    0.694   345.52
2015.39    0.695   345.23
2015.49    0.696   344.95
2015.59    0.696   344.66
2015.69    0.697   344.38
2015.79    0.698   344.09
2015.89    0.699   343.81
2015.99    0.700   343.53
2016.09    0.700   343.25
2016.19    0.701   342.96
2016.29    0.702   342.68
2016.39    0.703   342.40
2016.49    0.703   342.12
2016.59    0.704   341.84
2016.69    0.705   341.57
2016.79    0.705   341.29
2016.89    0.706   341.01
2016.99    0.707   340.73
2017.09    0.707   340.46
2017.19    0.708   340.18
2017.29    0.709   339.91
2017.39    0.709   339.63
2017.49    0.710   339.36
2017.59    0.710   339.08
2017.69    0.711   338.81
2017.79    0.712   338.54
2017.89    0.712   338.26
2017.99    0.713   337.99
2018.09    0.713   337.72
2018.19    0.714   337.45
2018.29    0.714   337.18
2018.39    0.715   336.91
2018.49    0.715   336.64
2018.59    0.716   336.37
2018.69    0.716   336.10
2018.79    0.717   335.83
2018.89    0.717   335.56
2018.99    0.718   335.29
2019.09    0.718   335.02
2019.19    0.719   334.76
2019.29    0.719   334.49
2019.39    0.720   334.22
2019.49    0.720   333.95
2019.59    0.720   333.69
2019.69    0.721   333.42
2019.79    0.721   333.16
2019.89    0.722   332.89
2019.99    0.722   332.63
2020.09    0.722   332.36
2020.19    0.723   332.10
2020.29    0.723   331.83
2020.39    0.723   331.57
2020.49    0.724   331.30
2020.59    0.724   331.04
2020.69    0.724   330.78
2020.79    0.725   330.51
2020.89    0.725   330.25
2020.99    0.725   329.99
2021.09    0.725   329.72
2021.19    0.726   329.46
2021.29    0.726   329.20
2021.39    0.726   328.94
2021.49    0.726   328.68
2021.59    0.727   328.41
2021.69    0.727   328.15
2021.79    0.727   327.89
2021.89    0.727   327.63
2021.99    0.727   327.37
2022.09    0.727   327.11
2022.19    0.728   326.84
2022.29    0.728   326.58
2022.39    0.728   326.32
2022.49    0.728   326.06
2022.59    0.728   325.80
2022.69    0.728   325.54
2022.79    0.728   325.28
2022.89    0.728   325.02
2022.99    0.728   324.76
2023.09    0.728   324.50
2023.19    0.728   324.24
2023.29    0.728   323.98
2023.39    0.729   323.72
2023.49    0.729   323.46
2023.59    0.729   323.20
2023.69    0.729   322.94
2023.79    0.729   322.68
2023.89    0.728   322.42
2023.99    0.728   322.16
2024.09    0.728   321.89
2024.19    0.728   321.63
2024.29    0.728   321.37
2024.39    0.728   321.11
2024.49    0.728   320.85
2024.59    0.728   320.59
2024.69    0.728   320.33
2024.79    0.728   320.07
2024.89    0.728   319.81
2024.99    0.728   319.55
2025.09    0.727   319.29
2025.19    0.727   319.03
2025.29    0.727   318.76
2025.39    0.727   318.50
2025.49    0.727   318.24
2025.59    0.727   317.98
2025.69    0.726   317.72
2025.79    0.726   317.46
2025.89    0.726   317.19
2025.99    0.726   316.93
2026.09    0.725   316.67
2026.19    0.725   316.41
2026.29    0.725   316.14
2026.39    0.725   315.88
2026.49    0.724   315.62
2026.59    0.724   315.35
2026.69    0.724   315.09
2026.79    0.723   314.83
2026.89    0.723   314.56
2026.99    0.723   314.30
2027.09    0.722   314.03
2027.19    0.722   313.77
2027.29    0.722   313.50
2027.39    0.721   313.24
2027.49    0.721   312.97
2027.59    0.720   312.70
2027.69    0.720   312.44
2027.79    0.720   312.17
2027.89    0.719   311.90
2027.99    0.719   311.64
2028.09    0.718   311.37
2028.19    0.718   311.10
2028.29    0.717   310.83
2028.39    0.717   310.57
2028.49    0.716   310.30
2028.59    0.716   310.03
2028.69    0.715   309.76
2028.79    0.715   309.49
2028.89    0.714   309.22
2028.99    0.714   308.95
2029.09    0.713   308.67
2029.19    0.713   308.40
2029.29    0.712   308.13
2029.39    0.712   307.86
2029.49    0.711   307.58
2029.59    0.710   307.31
2029.69    0.710   307.04
2029.79    0.709   306.76
2029.89    0.709   306.49
2029.99    0.708   306.21
2030.09    0.707   305.94
2030.19    0.707   305.66
2030.29    0.706   305.38
2030.39    0.705   305.10
2030.49    0.705   304.83
2030.59    0.704   304.55
2030.69    0.703   304.27
2030.79    0.702   303.99
2030.89    0.702   303.71
2030.99    0.701   303.43
2031.09    0.700   303.15
2031.19    0.699   302.86
2031.29    0.699   302.58
2031.39    0.698   302.30
2031.49    0.697   302.01
2031.59    0.696   301.73
2031.69    0.696   301.44
2031.79    0.695   301.16
2031.89    0.694   300.87
2031.99    0.693   300.58
2032.09    0.692   300.30
2032.19    0.691   300.01
2032.29    0.690   299.72
2032.39    0.690   299.43
2032.49    0.689   299.14
2032.59    0.688   298.85
2032.69    0.687   298.55
2032.79    0.686   298.26
2032.89    0.685   297.97
2032.99    0.684   297.67
2033.09    0.683   297.37
2033.19    0.682   297.08
2033.29    0.681   296.78
2033.39    0.680   296.48
2033.49    0.679   296.18
2033.59    0.678   295.88
2033.69    0.677   295.58
2033.79    0.676   295.28
2033.89    0.675   294.98
2033.99    0.674   294.68
2034.09    0.673   294.37
2034.19    0.672   294.07
2034.29    0.671   293.76
2034.39    0.670   293.45
2034.49    0.669   293.14
2034.59    0.668   292.83
2034.69    0.667   292.52
2034.79    0.666   292.21
2034.89    0.664   291.90
2034.99    0.663   291.59
2035.09    0.662   291.27
2035.19    0.661   290.96
2035.29    0.660   290.64
2035.39    0.659   290.32
2035.49    0.657   290.00
2035.59    0.656   289.68
2035.69    0.655   289.36
2035.79    0.654   289.04
2035.89    0.653   288.71
2035.99    0.651   288.39
2036.09    0.650   288.06
2036.19    0.649   287.73
2036.29    0.648   287.41
2036.39    0.646   287.08
2036.49    0.645   286.74
2036.59    0.644   286.41
2036.69    0.642   286.08
2036.79    0.641   285.74
2036.89    0.640   285.41
2036.99    0.639   285.07
2037.09    0.637   284.73
2037.19    0.636   284.39
2037.29    0.634   284.04
2037.39    0.633   283.70
2037.49    0.632   283.35
2037.59    0.630   283.01
2037.69    0.629   282.66
2037.79    0.628   282.31
2037.89    0.626   281.96
2037.99    0.625   281.60
2038.09    0.623   281.25
2038.19    0.622   280.89
2038.29    0.620   280.53
2038.39    0.619   280.17
2038.49    0.617   279.81
2038.59    0.616   279.45
2038.69    0.615   279.08
2038.79    0.613   278.72
2038.89    0.611   278.35
2038.99    0.610   277.98
2039.09    0.608   277.61
2039.19    0.607   277.23
2039.29    0.605   276.86
2039.39    0.604   276.48
2039.49    0.602   276.10
2039.59    0.601   275.72
2039.69    0.599   275.33
2039.79    0.598   274.95
2039.89    0.596   274.56
2039.99    0.594   274.17
2040.09    0.593   273.78
2040.19    0.591   273.38
2040.29    0.589   272.98
2040.39    0.588   272.59
2040.49    0.586   272.19
2040.59    0.585   271.78
2040.69    0.583   271.38
2040.79    0.581   270.97
2040.89    0.580   270.56
2040.99    0.578   270.15
2041.09    0.576   269.73
2041.19    0.574   269.31
2041.29    0.573   268.89
2041.39    0.571   268.47
2041.49    0.569   268.05
2041.59    0.568   267.62
2041.69    0.566   267.19
2041.79    0.564   266.75
2041.89    0.562   266.32
2041.99    0.561   265.88
2042.09    0.559   265.44
2042.19    0.557   265.00
2042.29    0.555   264.55
2042.39    0.553   264.10
2042.49    0.552   263.65
2042.59    0.550   263.19
2042.69    0.548   262.73
2042.79    0.546   262.27
2042.89    0.544   261.81
2042.99    0.543   261.34
2043.09    0.541   260.87
2043.19    0.539   260.39
2043.29    0.537   259.92
2043.39    0.535   259.43
2043.49    0.533   258.95
2043.59    0.531   258.46
2043.69    0.530   257.97
2043.79    0.528   257.48
2043.89    0.526   256.98
2043.99    0.524   256.48
2044.09    0.522   255.97
2044.19    0.520   255.46
2044.29    0.518   254.95
2044.39    0.516   254.43
2044.49    0.514   253.91
2044.59    0.512   253.39
2044.69    0.511   252.86
2044.79    0.509   252.33
2044.89    0.507   251.79
2044.99    0.505   251.25
2045.09    0.503   250.71
2045.19    0.501   250.16
2045.29    0.499   249.61
2045.39    0.497   249.05
2045.49    0.495   248.49
2045.59    0.493   247.92
2045.69    0.491   247.35
2045.79    0.489   246.77
2045.89    0.487   246.19
2045.99    0.485   245.61
2046.09    0.483   245.02
2046.19    0.481   244.43
2046.29    0.479   243.83
2046.39    0.477   243.22
2046.49    0.475   242.61
2046.59    0.473   242.00
2046.69    0.471   241.38
2046.79    0.469   240.75
2046.89    0.467   240.12
2046.99    0.465   239.49
2047.09    0.463   238.85
2047.19    0.461   238.20
2047.29    0.459   237.55
2047.39    0.457   236.89
2047.49    0.455   236.23
2047.59    0.453   235.56
2047.69    0.452   234.88
2047.79    0.450   234.20
2047.89    0.448   233.52
2047.99    0.446   232.82
2048.09    0.444   232.12
2048.19    0.442   231.42
2048.29    0.440   230.71
2048.39    0.438   229.99
2048.49    0.436   229.27
2048.59    0.434   228.54
2048.69    0.432   227.80
2048.79    0.430   227.05
2048.89    0.428   226.30
2048.99    0.426   225.55
2049.09    0.424   224.78
2049.19    0.422   224.01
2049.29    0.420   223.23
2049.39    0.419   222.45
2049.49    0.417   221.66
2049.59    0.415   220.86
2049.69    0.413   220.05
2049.79    0.411   219.24
2049.89    0.409   218.41
2049.99    0.407   217.59
2050.09    0.406   216.75
2050.19    0.404   215.91
2050.29    0.402   215.05
2050.39    0.400   214.19
2050.49    0.398   213.33
2050.59    0.397   212.45
2050.69    0.395   211.57
2050.79    0.393   210.68
2050.89    0.391   209.78
2050.99    0.390   208.88
2051.09    0.388   207.97
2051.19    0.386   207.04
2051.29    0.385   206.11
2051.39    0.383   205.18
2051.49    0.382   204.23
2051.59    0.380   203.28
2051.69    0.378   202.32
2051.79    0.377   201.35
2051.89    0.375   200.37
2051.99    0.374   199.38
2052.09    0.372   198.39
2052.19    0.371   197.39
2052.29    0.369   196.38
2052.39    0.368   195.36
2052.49    0.366   194.34
2052.59    0.365   193.30
2052.69    0.364   192.26
2052.79    0.362   191.21
2052.89    0.361   190.16
2052.99    0.360   189.09
2053.09    0.358   188.02
2053.19    0.357   186.94
2053.29    0.356   185.85
2053.39    0.355   184.76
2053.49    0.354   183.66
2053.59    0.352   182.55
2053.69    0.351   181.43
2053.79    0.350   180.31
2053.89    0.349   179.18
2053.99    0.348   178.04
2054.09    0.347   176.90
2054.19    0.346   175.75
2054.29    0.345   174.60
2054.39    0.344   173.43
2054.49    0.344   172.27
2054.59    0.343   171.09
2054.69    0.342   169.91
2054.79    0.341   168.73
2054.89    0.341   167.54
2054.99    0.340   166.35
2055.09    0.339   165.15
2055.19    0.339   163.94
2055.29    0.338   162.74
2055.39    0.337   161.52
2055.49    0.337   160.31
2055.59    0.336   159.09
2055.69    0.336   157.87
2055.79    0.336   156.64
2055.89    0.335   155.41
2055.99    0.335   154.18
2056.09    0.335   152.95
2056.19    0.334   151.71
2056.29    0.334   150.47
2056.39    0.334   149.24
2056.49    0.334   147.99
2056.59    0.334   146.75
2056.69    0.334   145.51
2056.79    0.333   144.27
2056.89    0.333   143.03
2056.99    0.333   141.78
2057.09    0.334   140.54
2057.19    0.334   139.30
2057.29    0.334   138.06
2057.39    0.334   136.82
2057.49    0.334   135.58
2057.59    0.334   134.35
2057.69    0.335   133.11
2057.79    0.335   131.88
2057.89    0.335   130.65
2057.99    0.336   129.42
2058.09    0.336   128.20
2058.19    0.337   126.98
2058.29    0.337   125.76






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 14:33:50



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