Double Star Calculator - Orbit

Orbital Elements for EGG2AA,AB
WDS: EGG2AA,AB WDS ID/Discoverer
P: 29.710 Orbital period (years)
a: 0.136 Semi-major axis (arcseconds)
i: 7.0 Inclination (degrees)
Ω: 166.0 Longitude of ascending node (degrees)
T: 2013.020 Epoch of periastron passage (year)
e: 0.813 Eccentricity
ω: 164.0 Longitude of periastron (degrees)
Start-Year: 2010.145 Year
End-Year: 2039.855 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for EGG2AA,AB
Position: 021836.27+401643.7 Epoch-2000 right ascension and declination
WDS-ID: 02186+4017 WDS designation
Discoverer Code: EGG2AA,AB Discover designation and components
ADS number: 1763 Aitken Double Star catalog
HD number: 14189 HD catalog number
Hipparcos number: 10772 Hipparcos catalog number
V1: 7.9 Magnitude of the primary
V2: 7.9 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2014 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Hor2015b Reference

Double Star Orbit for EGG2AA,AB



WDS 6th Orbit including measures of EGG2AA,AB

-- 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 EGG2AA,AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.245   147.17
--------------------------
2010.14    0.118   191.17
2010.24    0.116   192.12
2010.34    0.113   193.11
2010.44    0.110   194.16
2010.54    0.107   195.25
2010.64    0.104   196.41
2010.74    0.101   197.64
2010.84    0.098   198.94
2010.94    0.095   200.33
2011.04    0.092   201.80
2011.14    0.089   203.39
2011.24    0.086   205.09
2011.34    0.082   206.93
2011.44    0.079   208.93
2011.54    0.075   211.11
2011.64    0.072   213.51
2011.74    0.068   216.16
2011.84    0.064   219.11
2011.94    0.061   222.43
2012.04    0.057   226.20
2012.14    0.053   230.53
2012.24    0.049   235.56
2012.34    0.045   241.49
2012.44    0.041   248.59
2012.54    0.037   257.20
2012.64    0.033   267.78
2012.74    0.030   280.83
2012.84    0.027   296.71
2012.94    0.026   315.21
2013.04    0.025   335.12
2013.14    0.027   354.47
2013.24    0.029    11.62
2013.34    0.032    25.95
2013.44    0.035    37.63
2013.54    0.039    47.12
2013.64    0.043    54.90
2013.74    0.047    61.37
2013.84    0.051    66.83
2013.94    0.055    71.50
2014.04    0.059    75.55
2014.14    0.062    79.10
2014.24    0.066    82.25
2014.34    0.070    85.06
2014.44    0.073    87.59
2014.54    0.077    89.89
2014.64    0.080    91.99
2014.74    0.084    93.92
2014.84    0.087    95.71
2014.94    0.090    97.36
2015.04    0.093    98.90
2015.14    0.096   100.34
2015.24    0.099   101.69
2015.34    0.102   102.96
2015.44    0.105   104.17
2015.54    0.108   105.30
2015.64    0.111   106.38
2015.74    0.114   107.41
2015.84    0.116   108.39
2015.94    0.119   109.32
2016.04    0.122   110.22
2016.14    0.124   111.07
2016.24    0.127   111.90
2016.34    0.129   112.69
2016.44    0.132   113.45
2016.54    0.134   114.18
2016.64    0.136   114.89
2016.74    0.139   115.58
2016.84    0.141   116.24
2016.94    0.143   116.88
2017.04    0.145   117.50
2017.14    0.147   118.11
2017.24    0.150   118.70
2017.34    0.152   119.27
2017.44    0.154   119.82
2017.54    0.156   120.36
2017.64    0.158   120.89
2017.74    0.160   121.40
2017.84    0.162   121.91
2017.94    0.164   122.40
2018.04    0.165   122.87
2018.14    0.167   123.34
2018.24    0.169   123.80
2018.34    0.171   124.25
2018.44    0.173   124.69
2018.54    0.174   125.12
2018.64    0.176   125.54
2018.74    0.178   125.96
2018.84    0.179   126.36
2018.94    0.181   126.76
2019.04    0.182   127.15
2019.14    0.184   127.54
2019.24    0.186   127.92
2019.34    0.187   128.29
2019.44    0.189   128.66
2019.54    0.190   129.02
2019.64    0.192   129.38
2019.74    0.193   129.73
2019.84    0.194   130.07
2019.94    0.196   130.41
2020.04    0.197   130.75
2020.14    0.198   131.08
2020.24    0.200   131.41
2020.34    0.201   131.73
2020.44    0.202   132.05
2020.54    0.203   132.36
2020.64    0.205   132.67
2020.74    0.206   132.98
2020.84    0.207   133.29
2020.94    0.208   133.59
2021.04    0.209   133.88
2021.14    0.211   134.18
2021.24    0.212   134.47
2021.34    0.213   134.76
2021.44    0.214   135.04
2021.54    0.215   135.32
2021.64    0.216   135.60
2021.74    0.217   135.88
2021.84    0.218   136.15
2021.94    0.219   136.42
2022.04    0.220   136.69
2022.14    0.221   136.96
2022.24    0.222   137.23
2022.34    0.223   137.49
2022.44    0.223   137.75
2022.54    0.224   138.01
2022.64    0.225   138.26
2022.74    0.226   138.52
2022.84    0.227   138.77
2022.94    0.228   139.02
2023.04    0.228   139.27
2023.14    0.229   139.52
2023.24    0.230   139.77
2023.34    0.231   140.01
2023.44    0.231   140.25
2023.54    0.232   140.49
2023.64    0.233   140.74
2023.74    0.233   140.97
2023.84    0.234   141.21
2023.94    0.234   141.45
2024.04    0.235   141.68
2024.14    0.236   141.92
2024.24    0.236   142.15
2024.34    0.237   142.38
2024.44    0.237   142.61
2024.54    0.238   142.84
2024.64    0.238   143.07
2024.74    0.239   143.30
2024.84    0.239   143.52
2024.94    0.240   143.75
2025.04    0.240   143.97
2025.14    0.241   144.20
2025.24    0.241   144.42
2025.34    0.241   144.64
2025.44    0.242   144.86
2025.54    0.242   145.09
2025.64    0.243   145.31
2025.74    0.243   145.53
2025.84    0.243   145.75
2025.94    0.244   145.96
2026.04    0.244   146.18
2026.14    0.244   146.40
2026.24    0.244   146.62
2026.34    0.245   146.83
2026.44    0.245   147.05
2026.54    0.245   147.27
2026.64    0.245   147.48
2026.74    0.245   147.70
2026.84    0.246   147.91
2026.94    0.246   148.13
2027.04    0.246   148.34
2027.14    0.246   148.55
2027.24    0.246   148.77
2027.34    0.246   148.98
2027.44    0.246   149.20
2027.54    0.246   149.41
2027.64    0.246   149.62
2027.74    0.246   149.84
2027.84    0.246   150.05
2027.94    0.246   150.26
2028.04    0.246   150.48
2028.14    0.246   150.69
2028.24    0.246   150.90
2028.34    0.246   151.12
2028.44    0.246   151.33
2028.54    0.246   151.54
2028.64    0.246   151.76
2028.74    0.246   151.97
2028.84    0.246   152.19
2028.94    0.246   152.40
2029.04    0.245   152.62
2029.14    0.245   152.83
2029.24    0.245   153.05
2029.34    0.245   153.26
2029.44    0.245   153.48
2029.54    0.244   153.69
2029.64    0.244   153.91
2029.74    0.244   154.13
2029.84    0.244   154.35
2029.94    0.243   154.57
2030.04    0.243   154.79
2030.14    0.243   155.00
2030.24    0.242   155.23
2030.34    0.242   155.45
2030.44    0.242   155.67
2030.54    0.241   155.89
2030.64    0.241   156.11
2030.74    0.240   156.34
2030.84    0.240   156.56
2030.94    0.239   156.79
2031.04    0.239   157.01
2031.14    0.238   157.24
2031.24    0.238   157.47
2031.34    0.237   157.70
2031.44    0.237   157.93
2031.54    0.236   158.16
2031.64    0.236   158.39
2031.74    0.235   158.63
2031.84    0.235   158.86
2031.94    0.234   159.10
2032.04    0.233   159.34
2032.14    0.233   159.57
2032.24    0.232   159.82
2032.34    0.231   160.06
2032.44    0.231   160.30
2032.54    0.230   160.54
2032.64    0.229   160.79
2032.74    0.228   161.04
2032.84    0.228   161.29
2032.94    0.227   161.54
2033.04    0.226   161.79
2033.14    0.225   162.05
2033.24    0.224   162.30
2033.34    0.223   162.56
2033.44    0.223   162.82
2033.54    0.222   163.08
2033.64    0.221   163.35
2033.74    0.220   163.62
2033.84    0.219   163.88
2033.94    0.218   164.16
2034.04    0.217   164.43
2034.14    0.216   164.71
2034.24    0.215   164.99
2034.34    0.214   165.27
2034.44    0.213   165.55
2034.54    0.212   165.84
2034.64    0.211   166.13
2034.74    0.209   166.43
2034.84    0.208   166.72
2034.94    0.207   167.02
2035.04    0.206   167.33
2035.14    0.205   167.63
2035.24    0.203   167.95
2035.34    0.202   168.26
2035.44    0.201   168.58
2035.54    0.200   168.90
2035.64    0.198   169.23
2035.74    0.197   169.56
2035.84    0.196   169.90
2035.94    0.194   170.24
2036.04    0.193   170.58
2036.14    0.191   170.93
2036.24    0.190   171.29
2036.34    0.189   171.65
2036.44    0.187   172.02
2036.54    0.185   172.39
2036.64    0.184   172.77
2036.74    0.182   173.16
2036.84    0.181   173.55
2036.94    0.179   173.95
2037.04    0.177   174.36
2037.14    0.176   174.77
2037.24    0.174   175.20
2037.34    0.172   175.63
2037.44    0.171   176.07
2037.54    0.169   176.52
2037.64    0.167   176.98
2037.74    0.165   177.45
2037.84    0.163   177.93
2037.94    0.161   178.42
2038.04    0.159   178.92
2038.14    0.157   179.44
2038.24    0.155   179.97
2038.34    0.153   180.51
2038.44    0.151   181.07
2038.54    0.149   181.64
2038.64    0.147   182.23
2038.74    0.145   182.84
2038.84    0.143   183.46
2038.94    0.141   184.11
2039.04    0.138   184.77
2039.14    0.136   185.46
2039.24    0.134   186.18
2039.34    0.131   186.92
2039.44    0.129   187.68
2039.54    0.126   188.48
2039.64    0.124   189.31
2039.74    0.121   190.17
2039.84    0.118   191.08






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 14:59:11



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