Double Star Calculator - Orbit

Orbital Elements for LEI1A,BC
WDS: LEI1A,BC WDS ID/Discoverer
P: 44.400 Orbital period (years)
a: 1.1116 Semi-major axis (arcseconds)
i: 54.75 Inclination (degrees)
Ω: 26.8 Longitude of ascending node (degrees)
T: 2022.405 Epoch of periastron passage (year)
e: 0.52 Eccentricity
ω: 147.61 Longitude of periastron (degrees)
Start-Year: 2002.8 Year
End-Year: 2047.2 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for LEI1A,BC
Position: 002444.25-270827.9 Epoch-2000 right ascension and declination
WDS-ID: 00247-2653 WDS designation
Discoverer Code: LEI1A,BC Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 15.40 Magnitude of the primary
V2: 18.69 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Koh2012 Reference

Double Star Orbit for LEI1A,BC



WDS 6th Orbit including measures of LEI1A,BC

-- 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 LEI1A,BC
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.587   249.06
--------------------------
2002.80    1.573    12.02
2002.90    1.575    12.22
2003.00    1.576    12.42
2003.10    1.577    12.62
2003.20    1.578    12.82
2003.30    1.578    13.02
2003.40    1.579    13.22
2003.50    1.580    13.42
2003.60    1.580    13.61
2003.70    1.581    13.81
2003.80    1.581    14.01
2003.90    1.582    14.21
2004.00    1.582    14.40
2004.10    1.582    14.60
2004.20    1.582    14.80
2004.30    1.582    14.99
2004.40    1.582    15.19
2004.50    1.582    15.39
2004.60    1.582    15.59
2004.70    1.582    15.78
2004.80    1.582    15.98
2004.90    1.581    16.18
2005.00    1.581    16.38
2005.10    1.580    16.57
2005.20    1.579    16.77
2005.30    1.579    16.97
2005.40    1.578    17.17
2005.50    1.577    17.37
2005.60    1.576    17.57
2005.70    1.575    17.76
2005.80    1.574    17.96
2005.90    1.573    18.16
2006.00    1.571    18.36
2006.10    1.570    18.56
2006.20    1.568    18.76
2006.30    1.567    18.97
2006.40    1.565    19.17
2006.50    1.563    19.37
2006.60    1.562    19.57
2006.70    1.560    19.77
2006.80    1.558    19.98
2006.90    1.555    20.18
2007.00    1.553    20.39
2007.10    1.551    20.59
2007.20    1.549    20.80
2007.30    1.546    21.00
2007.40    1.544    21.21
2007.50    1.541    21.42
2007.60    1.538    21.63
2007.70    1.535    21.83
2007.80    1.532    22.04
2007.90    1.529    22.25
2008.00    1.526    22.47
2008.10    1.523    22.68
2008.20    1.520    22.89
2008.30    1.516    23.11
2008.40    1.513    23.32
2008.50    1.509    23.54
2008.60    1.505    23.76
2008.70    1.502    23.97
2008.80    1.498    24.19
2008.90    1.494    24.41
2009.00    1.490    24.64
2009.10    1.486    24.86
2009.20    1.481    25.08
2009.30    1.477    25.31
2009.40    1.472    25.54
2009.50    1.468    25.77
2009.60    1.463    26.00
2009.70    1.458    26.23
2009.80    1.453    26.46
2009.90    1.448    26.69
2010.00    1.443    26.93
2010.10    1.438    27.17
2010.20    1.432    27.41
2010.30    1.427    27.65
2010.40    1.421    27.89
2010.50    1.416    28.14
2010.60    1.410    28.39
2010.70    1.404    28.64
2010.80    1.398    28.89
2010.90    1.392    29.14
2011.00    1.386    29.40
2011.10    1.379    29.66
2011.20    1.373    29.92
2011.30    1.366    30.18
2011.40    1.360    30.45
2011.50    1.353    30.71
2011.60    1.346    30.99
2011.70    1.339    31.26
2011.80    1.332    31.54
2011.90    1.324    31.82
2012.00    1.317    32.10
2012.10    1.309    32.39
2012.20    1.302    32.68
2012.30    1.294    32.97
2012.40    1.286    33.27
2012.50    1.278    33.57
2012.60    1.270    33.87
2012.70    1.261    34.18
2012.80    1.253    34.49
2012.90    1.245    34.81
2013.00    1.236    35.13
2013.10    1.227    35.46
2013.20    1.218    35.79
2013.30    1.209    36.12
2013.40    1.200    36.46
2013.50    1.190    36.81
2013.60    1.181    37.16
2013.70    1.171    37.52
2013.80    1.162    37.88
2013.90    1.152    38.25
2014.00    1.142    38.62
2014.10    1.132    39.01
2014.20    1.121    39.40
2014.30    1.111    39.79
2014.40    1.100    40.20
2014.50    1.090    40.61
2014.60    1.079    41.03
2014.70    1.068    41.46
2014.80    1.057    41.89
2014.90    1.046    42.34
2015.00    1.034    42.80
2015.10    1.023    43.27
2015.20    1.011    43.74
2015.30    0.999    44.23
2015.40    0.987    44.73
2015.50    0.975    45.25
2015.60    0.963    45.77
2015.70    0.950    46.31
2015.80    0.938    46.87
2015.90    0.925    47.44
2016.00    0.912    48.02
2016.10    0.899    48.62
2016.20    0.886    49.24
2016.30    0.873    49.88
2016.40    0.860    50.54
2016.50    0.846    51.22
2016.60    0.833    51.92
2016.70    0.819    52.64
2016.80    0.805    53.39
2016.90    0.791    54.16
2017.00    0.777    54.97
2017.10    0.763    55.80
2017.20    0.749    56.66
2017.30    0.735    57.56
2017.40    0.720    58.49
2017.50    0.706    59.47
2017.60    0.691    60.48
2017.70    0.677    61.53
2017.80    0.662    62.64
2017.90    0.647    63.79
2018.00    0.633    65.00
2018.10    0.618    66.26
2018.20    0.603    67.59
2018.30    0.589    68.98
2018.40    0.574    70.44
2018.50    0.559    71.98
2018.60    0.545    73.60
2018.70    0.531    75.30
2018.80    0.517    77.10
2018.90    0.503    79.00
2019.00    0.489    81.01
2019.10    0.476    83.13
2019.20    0.463    85.37
2019.30    0.451    87.73
2019.40    0.439    90.23
2019.50    0.427    92.86
2019.60    0.416    95.64
2019.70    0.406    98.56
2019.80    0.397   101.62
2019.90    0.388   104.83
2020.00    0.381   108.17
2020.10    0.374   111.64
2020.20    0.368   115.23
2020.30    0.364   118.93
2020.40    0.360   122.70
2020.50    0.358   126.53
2020.60    0.357   130.40
2020.70    0.357   134.28
2020.80    0.358   138.15
2020.90    0.361   141.97
2021.00    0.364   145.73
2021.10    0.369   149.41
2021.20    0.374   152.99
2021.30    0.381   156.45
2021.40    0.388   159.80
2021.50    0.396   163.02
2021.60    0.404   166.12
2021.70    0.413   169.08
2021.80    0.422   171.92
2021.90    0.431   174.63
2022.00    0.441   177.23
2022.10    0.451   179.72
2022.20    0.460   182.10
2022.30    0.470   184.38
2022.40    0.479   186.58
2022.50    0.489   188.69
2022.60    0.498   190.72
2022.70    0.506   192.68
2022.80    0.515   194.57
2022.90    0.523   196.41
2023.00    0.531   198.19
2023.10    0.538   199.92
2023.20    0.545   201.60
2023.30    0.551   203.25
2023.40    0.557   204.86
2023.50    0.562   206.43
2023.60    0.567   207.98
2023.70    0.572   209.50
2023.80    0.576   211.00
2023.90    0.580   212.48
2024.00    0.583   213.94
2024.10    0.586   215.39
2024.20    0.588   216.82
2024.30    0.591   218.24
2024.40    0.592   219.65
2024.50    0.594   221.06
2024.60    0.595   222.46
2024.70    0.596   223.85
2024.80    0.597   225.24
2024.90    0.597   226.62
2025.00    0.597   228.01
2025.10    0.597   229.39
2025.20    0.597   230.78
2025.30    0.597   232.17
2025.40    0.596   233.56
2025.50    0.596   234.95
2025.60    0.595   236.34
2025.70    0.594   237.74
2025.80    0.593   239.14
2025.90    0.592   240.54
2026.00    0.592   241.95
2026.10    0.591   243.37
2026.20    0.590   244.78
2026.30    0.589   246.21
2026.40    0.588   247.63
2026.50    0.587   249.06
2026.60    0.587   250.50
2026.70    0.586   251.93
2026.80    0.585   253.37
2026.90    0.585   254.81
2027.00    0.585   256.26
2027.10    0.584   257.70
2027.20    0.584   259.15
2027.30    0.584   260.60
2027.40    0.585   262.04
2027.50    0.585   263.48
2027.60    0.585   264.93
2027.70    0.586   266.37
2027.80    0.587   267.80
2027.90    0.588   269.23
2028.00    0.589   270.66
2028.10    0.590   272.08
2028.20    0.592   273.49
2028.30    0.594   274.90
2028.40    0.595   276.30
2028.50    0.598   277.69
2028.60    0.600   279.06
2028.70    0.602   280.43
2028.80    0.605   281.79
2028.90    0.608   283.13
2029.00    0.611   284.46
2029.10    0.614   285.78
2029.20    0.617   287.09
2029.30    0.620   288.38
2029.40    0.624   289.65
2029.50    0.628   290.91
2029.60    0.632   292.16
2029.70    0.636   293.39
2029.80    0.640   294.60
2029.90    0.645   295.79
2030.00    0.649   296.97
2030.10    0.654   298.14
2030.20    0.659   299.28
2030.30    0.664   300.41
2030.40    0.669   301.52
2030.50    0.675   302.61
2030.60    0.680   303.69
2030.70    0.686   304.75
2030.80    0.691   305.79
2030.90    0.697   306.82
2031.00    0.703   307.82
2031.10    0.709   308.82
2031.20    0.715   309.79
2031.30    0.721   310.75
2031.40    0.727   311.69
2031.50    0.734   312.61
2031.60    0.740   313.52
2031.70    0.747   314.42
2031.80    0.753   315.29
2031.90    0.760   316.16
2032.00    0.767   317.00
2032.10    0.774   317.84
2032.20    0.780   318.66
2032.30    0.787   319.46
2032.40    0.794   320.25
2032.50    0.801   321.03
2032.60    0.808   321.79
2032.70    0.815   322.54
2032.80    0.823   323.27
2032.90    0.830   324.00
2033.00    0.837   324.71
2033.10    0.844   325.41
2033.20    0.851   326.10
2033.30    0.859   326.77
2033.40    0.866   327.43
2033.50    0.873   328.09
2033.60    0.881   328.73
2033.70    0.888   329.36
2033.80    0.895   329.98
2033.90    0.903   330.59
2034.00    0.910   331.19
2034.10    0.918   331.79
2034.20    0.925   332.37
2034.30    0.932   332.94
2034.40    0.940   333.50
2034.50    0.947   334.06
2034.60    0.955   334.60
2034.70    0.962   335.14
2034.80    0.970   335.67
2034.90    0.977   336.19
2035.00    0.984   336.71
2035.10    0.992   337.21
2035.20    0.999   337.71
2035.30    1.006   338.20
2035.40    1.014   338.69
2035.50    1.021   339.16
2035.60    1.028   339.63
2035.70    1.036   340.10
2035.80    1.043   340.55
2035.90    1.050   341.01
2036.00    1.057   341.45
2036.10    1.065   341.89
2036.20    1.072   342.32
2036.30    1.079   342.75
2036.40    1.086   343.17
2036.50    1.093   343.59
2036.60    1.100   344.00
2036.70    1.107   344.40
2036.80    1.114   344.80
2036.90    1.121   345.20
2037.00    1.128   345.59
2037.10    1.135   345.97
2037.20    1.142   346.35
2037.30    1.149   346.73
2037.40    1.156   347.10
2037.50    1.162   347.47
2037.60    1.169   347.83
2037.70    1.176   348.19
2037.80    1.183   348.55
2037.90    1.189   348.90
2038.00    1.196   349.25
2038.10    1.202   349.59
2038.20    1.209   349.93
2038.30    1.215   350.27
2038.40    1.222   350.60
2038.50    1.228   350.93
2038.60    1.234   351.25
2038.70    1.241   351.58
2038.80    1.247   351.90
2038.90    1.253   352.21
2039.00    1.259   352.53
2039.10    1.265   352.83
2039.20    1.272   353.14
2039.30    1.278   353.45
2039.40    1.283   353.75
2039.50    1.289   354.05
2039.60    1.295   354.34
2039.70    1.301   354.63
2039.80    1.307   354.92
2039.90    1.313   355.21
2040.00    1.318   355.50
2040.10    1.324   355.78
2040.20    1.330   356.06
2040.30    1.335   356.34
2040.40    1.341   356.62
2040.50    1.346   356.89
2040.60    1.351   357.16
2040.70    1.357   357.43
2040.80    1.362   357.70
2040.90    1.367   357.96
2041.00    1.372   358.23
2041.10    1.377   358.49
2041.20    1.382   358.75
2041.30    1.387   359.00
2041.40    1.392   359.26
2041.50    1.397   359.51
2041.60    1.402   359.77
2041.70    1.407     0.02
2041.80    1.412     0.27
2041.90    1.416     0.51
2042.00    1.421     0.76
2042.10    1.425     1.00
2042.20    1.430     1.24
2042.30    1.434     1.49
2042.40    1.439     1.72
2042.50    1.443     1.96
2042.60    1.447     2.20
2042.70    1.451     2.43
2042.80    1.455     2.67
2042.90    1.460     2.90
2043.00    1.464     3.13
2043.10    1.467     3.36
2043.20    1.471     3.59
2043.30    1.475     3.82
2043.40    1.479     4.04
2043.50    1.483     4.27
2043.60    1.486     4.49
2043.70    1.490     4.72
2043.80    1.493     4.94
2043.90    1.497     5.16
2044.00    1.500     5.38
2044.10    1.504     5.60
2044.20    1.507     5.82
2044.30    1.510     6.03
2044.40    1.513     6.25
2044.50    1.516     6.47
2044.60    1.519     6.68
2044.70    1.522     6.89
2044.80    1.525     7.11
2044.90    1.528     7.32
2045.00    1.531     7.53
2045.10    1.533     7.74
2045.20    1.536     7.95
2045.30    1.538     8.16
2045.40    1.541     8.37
2045.50    1.543     8.57
2045.60    1.546     8.78
2045.70    1.548     8.99
2045.80    1.550     9.19
2045.90    1.552     9.40
2046.00    1.554     9.60
2046.10    1.556     9.81
2046.20    1.558    10.01
2046.30    1.560    10.21
2046.40    1.562    10.42
2046.50    1.563    10.62
2046.60    1.565    10.82
2046.70    1.567    11.02
2046.80    1.568    11.22
2046.90    1.570    11.42
2047.00    1.571    11.63
2047.10    1.572    11.83
2047.20    1.573    12.02






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 14:39:03



www.stella-vega.de