Double Star Calculator - Orbit

Orbital Elements for A2700
WDS: A2700 WDS ID/Discoverer
P: 30.073 Orbital period (years)
a: 0.1809 Semi-major axis (arcseconds)
i: 147.5 Inclination (degrees)
Ω: 204.3 Longitude of ascending node (degrees)
T: 2020.392 Epoch of periastron passage (year)
e: 0.309 Eccentricity
ω: 176.5 Longitude of periastron (degrees)
Start-Year: 2009.9635 Year
End-Year: 2040.0365 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for A2700
Position: 235146.78-063647.0 Epoch-2000 right ascension and declination
WDS-ID: 23518-0637 WDS designation
Discoverer Code: A2700 Discover designation and components
ADS number: 17052 Aitken Double Star catalog
HD number: 223688 HD catalog number
Hipparcos number: 117666 Hipparcos catalog number
V1: 9.57 Magnitude of the primary
V2: 9.71 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 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: Tok2023b Reference

Double Star Orbit for A2700



WDS 6th Orbit including measures of A2700

-- 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 A2700
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.155   276.35
--------------------------
2009.96    0.214   179.70
2010.06    0.213   179.01
2010.16    0.212   178.32
2010.26    0.211   177.62
2010.36    0.210   176.91
2010.46    0.209   176.19
2010.56    0.208   175.47
2010.66    0.207   174.74
2010.76    0.206   174.00
2010.86    0.205   173.26
2010.96    0.203   172.50
2011.06    0.202   171.74
2011.16    0.201   170.96
2011.26    0.200   170.18
2011.36    0.199   169.39
2011.46    0.197   168.59
2011.56    0.196   167.77
2011.66    0.195   166.95
2011.76    0.193   166.11
2011.86    0.192   165.27
2011.96    0.191   164.41
2012.06    0.189   163.54
2012.16    0.188   162.66
2012.26    0.187   161.76
2012.36    0.185   160.85
2012.46    0.184   159.93
2012.56    0.182   159.00
2012.66    0.181   158.04
2012.76    0.180   157.08
2012.86    0.178   156.10
2012.96    0.177   155.10
2013.06    0.175   154.09
2013.16    0.174   153.05
2013.26    0.172   152.01
2013.36    0.171   150.94
2013.46    0.170   149.86
2013.56    0.168   148.75
2013.66    0.167   147.63
2013.76    0.165   146.49
2013.86    0.164   145.33
2013.96    0.162   144.15
2014.06    0.161   142.94
2014.16    0.159   141.72
2014.26    0.158   140.47
2014.36    0.157   139.20
2014.46    0.155   137.90
2014.56    0.154   136.58
2014.66    0.152   135.24
2014.76    0.151   133.87
2014.86    0.150   132.48
2014.96    0.148   131.07
2015.06    0.147   129.62
2015.16    0.146   128.15
2015.26    0.144   126.66
2015.36    0.143   125.14
2015.46    0.142   123.59
2015.56    0.141   122.01
2015.66    0.139   120.41
2015.76    0.138   118.78
2015.86    0.137   117.13
2015.96    0.136   115.45
2016.06    0.135   113.74
2016.16    0.134   112.00
2016.26    0.133   110.24
2016.36    0.132   108.46
2016.46    0.131   106.65
2016.56    0.130   104.82
2016.66    0.130   102.96
2016.76    0.129   101.08
2016.86    0.128    99.18
2016.96    0.128    97.26
2017.06    0.127    95.32
2017.16    0.126    93.36
2017.26    0.126    91.38
2017.36    0.125    89.39
2017.46    0.125    87.39
2017.56    0.125    85.37
2017.66    0.124    83.33
2017.76    0.124    81.29
2017.86    0.124    79.24
2017.96    0.123    77.18
2018.06    0.123    75.12
2018.16    0.123    73.05
2018.26    0.123    70.97
2018.36    0.123    68.90
2018.46    0.123    66.82
2018.56    0.123    64.74
2018.66    0.123    62.66
2018.76    0.123    60.58
2018.86    0.123    58.50
2018.96    0.123    56.43
2019.06    0.123    54.36
2019.16    0.123    52.29
2019.26    0.123    50.23
2019.36    0.124    48.17
2019.46    0.124    46.11
2019.56    0.124    44.06
2019.66    0.124    42.02
2019.76    0.124    39.98
2019.86    0.124    37.94
2019.96    0.124    35.91
2020.06    0.125    33.88
2020.16    0.125    31.86
2020.26    0.125    29.84
2020.36    0.125    27.83
2020.46    0.125    25.81
2020.56    0.125    23.80
2020.66    0.125    21.80
2020.76    0.125    19.79
2020.86    0.125    17.79
2020.96    0.125    15.78
2021.06    0.125    13.78
2021.16    0.125    11.78
2021.26    0.125     9.78
2021.36    0.125     7.78
2021.46    0.125     5.78
2021.56    0.125     3.78
2021.66    0.125     1.78
2021.76    0.125   359.78
2021.86    0.125   357.78
2021.96    0.125   355.78
2022.06    0.125   353.78
2022.16    0.125   351.78
2022.26    0.125   349.78
2022.36    0.125   347.78
2022.46    0.126   345.79
2022.56    0.126   343.80
2022.66    0.126   341.81
2022.76    0.126   339.82
2022.86    0.126   337.84
2022.96    0.126   335.87
2023.06    0.127   333.90
2023.16    0.127   331.94
2023.26    0.127   329.99
2023.36    0.127   328.05
2023.46    0.128   326.12
2023.56    0.128   324.20
2023.66    0.129   322.30
2023.76    0.129   320.40
2023.86    0.130   318.52
2023.96    0.130   316.66
2024.06    0.131   314.81
2024.16    0.131   312.98
2024.26    0.132   311.17
2024.36    0.133   309.38
2024.46    0.133   307.61
2024.56    0.134   305.85
2024.66    0.135   304.12
2024.76    0.136   302.41
2024.86    0.137   300.72
2024.96    0.138   299.05
2025.06    0.139   297.41
2025.16    0.140   295.79
2025.26    0.141   294.19
2025.36    0.142   292.61
2025.46    0.143   291.06
2025.56    0.144   289.53
2025.66    0.145   288.03
2025.76    0.146   286.55
2025.86    0.147   285.09
2025.96    0.149   283.66
2026.06    0.150   282.25
2026.16    0.151   280.86
2026.26    0.152   279.49
2026.36    0.154   278.15
2026.46    0.155   276.83
2026.56    0.156   275.53
2026.66    0.158   274.26
2026.76    0.159   273.00
2026.86    0.160   271.77
2026.96    0.162   270.55
2027.06    0.163   269.36
2027.16    0.164   268.18
2027.26    0.166   267.03
2027.36    0.167   265.89
2027.46    0.168   264.77
2027.56    0.170   263.67
2027.66    0.171   262.59
2027.76    0.172   261.53
2027.86    0.174   260.48
2027.96    0.175   259.45
2028.06    0.177   258.43
2028.16    0.178   257.43
2028.26    0.179   256.45
2028.36    0.181   255.48
2028.46    0.182   254.52
2028.56    0.183   253.58
2028.66    0.185   252.65
2028.76    0.186   251.74
2028.86    0.187   250.84
2028.96    0.189   249.95
2029.06    0.190   249.07
2029.16    0.191   248.21
2029.26    0.193   247.35
2029.36    0.194   246.51
2029.46    0.195   245.68
2029.56    0.196   244.86
2029.66    0.198   244.05
2029.76    0.199   243.25
2029.86    0.200   242.46
2029.96    0.201   241.68
2030.06    0.202   240.90
2030.16    0.203   240.14
2030.26    0.205   239.39
2030.36    0.206   238.64
2030.46    0.207   237.90
2030.56    0.208   237.17
2030.66    0.209   236.45
2030.76    0.210   235.73
2030.86    0.211   235.02
2030.96    0.212   234.32
2031.06    0.213   233.63
2031.16    0.214   232.94
2031.26    0.215   232.26
2031.36    0.216   231.58
2031.46    0.217   230.91
2031.56    0.218   230.25
2031.66    0.219   229.59
2031.76    0.220   228.93
2031.86    0.220   228.28
2031.96    0.221   227.64
2032.06    0.222   227.00
2032.16    0.223   226.37
2032.26    0.224   225.74
2032.36    0.224   225.11
2032.46    0.225   224.49
2032.56    0.226   223.87
2032.66    0.227   223.26
2032.76    0.227   222.65
2032.86    0.228   222.04
2032.96    0.228   221.44
2033.06    0.229   220.84
2033.16    0.230   220.24
2033.26    0.230   219.64
2033.36    0.231   219.05
2033.46    0.231   218.46
2033.56    0.232   217.88
2033.66    0.232   217.29
2033.76    0.233   216.71
2033.86    0.233   216.13
2033.96    0.233   215.55
2034.06    0.234   214.98
2034.16    0.234   214.41
2034.26    0.235   213.83
2034.36    0.235   213.26
2034.46    0.235   212.69
2034.56    0.235   212.13
2034.66    0.236   211.56
2034.76    0.236   210.99
2034.86    0.236   210.43
2034.96    0.236   209.87
2035.06    0.236   209.30
2035.16    0.236   208.74
2035.26    0.237   208.18
2035.36    0.237   207.62
2035.46    0.237   207.06
2035.56    0.237   206.50
2035.66    0.237   205.94
2035.76    0.237   205.37
2035.86    0.237   204.81
2035.96    0.237   204.25
2036.06    0.237   203.69
2036.16    0.236   203.13
2036.26    0.236   202.57
2036.36    0.236   202.00
2036.46    0.236   201.44
2036.56    0.236   200.87
2036.66    0.235   200.31
2036.76    0.235   199.74
2036.86    0.235   199.17
2036.96    0.235   198.60
2037.06    0.234   198.03
2037.16    0.234   197.46
2037.26    0.234   196.88
2037.36    0.233   196.31
2037.46    0.233   195.73
2037.56    0.232   195.15
2037.66    0.232   194.56
2037.76    0.231   193.98
2037.86    0.231   193.39
2037.96    0.230   192.80
2038.06    0.230   192.20
2038.16    0.229   191.61
2038.26    0.229   191.01
2038.36    0.228   190.41
2038.46    0.227   189.80
2038.56    0.227   189.19
2038.66    0.226   188.58
2038.76    0.225   187.96
2038.86    0.225   187.34
2038.96    0.224   186.71
2039.06    0.223   186.08
2039.16    0.222   185.45
2039.26    0.221   184.81
2039.36    0.221   184.17
2039.46    0.220   183.52
2039.56    0.219   182.87
2039.66    0.218   182.21
2039.76    0.217   181.54
2039.86    0.216   180.87
2039.96    0.215   180.20



 

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 18:55:25


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