Double Star Calculator - Orbit

Orbital Elements for HDS2108AB
WDS: HDS2108AB WDS ID/Discoverer
P: 43.600 Orbital period (years)
a: 0.2164 Semi-major axis (arcseconds)
i: 123.9 Inclination (degrees)
Ω: 22.6 Longitude of ascending node (degrees)
T: 2014.660 Epoch of periastron passage (year)
e: 0.475 Eccentricity
ω: 136.9 Longitude of periastron (degrees)
Start-Year: 2003.2 Year
End-Year: 2046.8 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HDS2108AB
Position: 145612.99+174453.0 Epoch-2000 right ascension and declination
WDS-ID: 14562+1745 WDS designation
Discoverer Code: HDS2108AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 73085 Hipparcos catalog number
V1: 11.80 Magnitude of the primary
V2: 12.31 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Mit2020 Reference

Double Star Orbit for HDS2108AB



WDS 6th Orbit including measures of HDS2108AB

-- 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 HDS2108AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.155    95.65
--------------------------
2003.20    0.265    24.86
2003.30    0.264    24.59
2003.40    0.263    24.31
2003.50    0.262    24.04
2003.60    0.261    23.76
2003.70    0.260    23.48
2003.80    0.259    23.20
2003.90    0.258    22.91
2004.00    0.257    22.63
2004.10    0.256    22.34
2004.20    0.254    22.05
2004.30    0.253    21.75
2004.40    0.252    21.45
2004.50    0.251    21.15
2004.60    0.249    20.85
2004.70    0.248    20.54
2004.80    0.247    20.23
2004.90    0.245    19.92
2005.00    0.244    19.60
2005.10    0.242    19.28
2005.20    0.241    18.95
2005.30    0.240    18.63
2005.40    0.238    18.29
2005.50    0.236    17.96
2005.60    0.235    17.61
2005.70    0.233    17.27
2005.80    0.232    16.92
2005.90    0.230    16.56
2006.00    0.228    16.20
2006.10    0.227    15.83
2006.20    0.225    15.46
2006.30    0.223    15.08
2006.40    0.221    14.70
2006.50    0.219    14.31
2006.60    0.218    13.91
2006.70    0.216    13.51
2006.80    0.214    13.09
2006.90    0.212    12.67
2007.00    0.210    12.25
2007.10    0.208    11.81
2007.20    0.206    11.37
2007.30    0.204    10.92
2007.40    0.202    10.45
2007.50    0.199     9.98
2007.60    0.197     9.50
2007.70    0.195     9.01
2007.80    0.193     8.50
2007.90    0.191     7.99
2008.00    0.188     7.46
2008.10    0.186     6.91
2008.20    0.184     6.36
2008.30    0.181     5.79
2008.40    0.179     5.20
2008.50    0.176     4.60
2008.60    0.174     3.98
2008.70    0.171     3.34
2008.80    0.169     2.69
2008.90    0.166     2.01
2009.00    0.164     1.31
2009.10    0.161     0.59
2009.20    0.158   359.84
2009.30    0.156   359.07
2009.40    0.153   358.27
2009.50    0.150   357.45
2009.60    0.147   356.59
2009.70    0.145   355.70
2009.80    0.142   354.77
2009.90    0.139   353.80
2010.00    0.136   352.80
2010.10    0.133   351.75
2010.20    0.130   350.66
2010.30    0.127   349.51
2010.40    0.124   348.32
2010.50    0.122   347.06
2010.60    0.119   345.75
2010.70    0.116   344.37
2010.80    0.113   342.92
2010.90    0.110   341.39
2011.00    0.107   339.78
2011.10    0.104   338.08
2011.20    0.102   336.29
2011.30    0.099   334.40
2011.40    0.096   332.40
2011.50    0.093   330.29
2011.60    0.091   328.05
2011.70    0.088   325.69
2011.80    0.086   323.19
2011.90    0.084   320.55
2012.00    0.081   317.76
2012.10    0.079   314.83
2012.20    0.078   311.75
2012.30    0.076   308.52
2012.40    0.074   305.15
2012.50    0.073   301.64
2012.60    0.072   298.02
2012.70    0.071   294.29
2012.80    0.070   290.47
2012.90    0.070   286.60
2013.00    0.070   282.69
2013.10    0.070   278.77
2013.20    0.070   274.88
2013.30    0.071   271.03
2013.40    0.071   267.25
2013.50    0.072   263.57
2013.60    0.073   260.00
2013.70    0.075   256.54
2013.80    0.076   253.22
2013.90    0.078   250.04
2014.00    0.080   246.99
2014.10    0.082   244.09
2014.20    0.084   241.31
2014.30    0.086   238.67
2014.40    0.088   236.16
2014.50    0.090   233.76
2014.60    0.092   231.48
2014.70    0.094   229.30
2014.80    0.097   227.22
2014.90    0.099   225.23
2015.00    0.101   223.33
2015.10    0.103   221.51
2015.20    0.105   219.75
2015.30    0.107   218.06
2015.40    0.109   216.44
2015.50    0.111   214.87
2015.60    0.113   213.35
2015.70    0.114   211.88
2015.80    0.116   210.45
2015.90    0.118   209.06
2016.00    0.119   207.71
2016.10    0.121   206.39
2016.20    0.122   205.10
2016.30    0.123   203.83
2016.40    0.124   202.60
2016.50    0.126   201.38
2016.60    0.127   200.19
2016.70    0.128   199.01
2016.80    0.128   197.85
2016.90    0.129   196.71
2017.00    0.130   195.58
2017.10    0.131   194.46
2017.20    0.131   193.36
2017.30    0.132   192.26
2017.40    0.132   191.17
2017.50    0.133   190.09
2017.60    0.133   189.01
2017.70    0.133   187.94
2017.80    0.134   186.88
2017.90    0.134   185.81
2018.00    0.134   184.76
2018.10    0.134   183.70
2018.20    0.134   182.64
2018.30    0.134   181.59
2018.40    0.134   180.54
2018.50    0.134   179.48
2018.60    0.134   178.43
2018.70    0.134   177.37
2018.80    0.134   176.32
2018.90    0.134   175.26
2019.00    0.134   174.20
2019.10    0.134   173.14
2019.20    0.133   172.07
2019.30    0.133   171.00
2019.40    0.133   169.93
2019.50    0.133   168.85
2019.60    0.132   167.77
2019.70    0.132   166.69
2019.80    0.132   165.60
2019.90    0.132   164.51
2020.00    0.132   163.42
2020.10    0.131   162.32
2020.20    0.131   161.22
2020.30    0.131   160.11
2020.40    0.131   159.00
2020.50    0.130   157.89
2020.60    0.130   156.77
2020.70    0.130   155.65
2020.80    0.130   154.52
2020.90    0.130   153.40
2021.00    0.129   152.27
2021.10    0.129   151.13
2021.20    0.129   150.00
2021.30    0.129   148.86
2021.40    0.129   147.72
2021.50    0.129   146.58
2021.60    0.129   145.44
2021.70    0.129   144.30
2021.80    0.129   143.15
2021.90    0.129   142.01
2022.00    0.129   140.87
2022.10    0.129   139.72
2022.20    0.129   138.58
2022.30    0.129   137.44
2022.40    0.129   136.31
2022.50    0.129   135.17
2022.60    0.130   134.04
2022.70    0.130   132.91
2022.80    0.130   131.78
2022.90    0.130   130.66
2023.00    0.130   129.55
2023.10    0.131   128.43
2023.20    0.131   127.33
2023.30    0.131   126.23
2023.40    0.132   125.13
2023.50    0.132   124.04
2023.60    0.133   122.96
2023.70    0.133   121.89
2023.80    0.134   120.82
2023.90    0.134   119.76
2024.00    0.135   118.71
2024.10    0.135   117.67
2024.20    0.136   116.64
2024.30    0.136   115.61
2024.40    0.137   114.60
2024.50    0.138   113.59
2024.60    0.138   112.60
2024.70    0.139   111.61
2024.80    0.140   110.63
2024.90    0.141   109.67
2025.00    0.141   108.71
2025.10    0.142   107.77
2025.20    0.143   106.83
2025.30    0.144   105.91
2025.40    0.145   104.99
2025.50    0.145   104.09
2025.60    0.146   103.20
2025.70    0.147   102.32
2025.80    0.148   101.45
2025.90    0.149   100.59
2026.00    0.150    99.74
2026.10    0.151    98.90
2026.20    0.152    98.07
2026.30    0.153    97.25
2026.40    0.154    96.45
2026.50    0.155    95.65
2026.60    0.156    94.86
2026.70    0.157    94.09
2026.80    0.158    93.32
2026.90    0.159    92.57
2027.00    0.160    91.82
2027.10    0.161    91.09
2027.20    0.162    90.36
2027.30    0.163    89.65
2027.40    0.165    88.94
2027.50    0.166    88.25
2027.60    0.167    87.56
2027.70    0.168    86.88
2027.80    0.169    86.21
2027.90    0.170    85.55
2028.00    0.171    84.90
2028.10    0.173    84.26
2028.20    0.174    83.63
2028.30    0.175    83.00
2028.40    0.176    82.39
2028.50    0.177    81.78
2028.60    0.178    81.18
2028.70    0.180    80.59
2028.80    0.181    80.00
2028.90    0.182    79.43
2029.00    0.183    78.86
2029.10    0.184    78.30
2029.20    0.186    77.74
2029.30    0.187    77.20
2029.40    0.188    76.66
2029.50    0.189    76.12
2029.60    0.190    75.60
2029.70    0.192    75.08
2029.80    0.193    74.56
2029.90    0.194    74.06
2030.00    0.195    73.56
2030.10    0.197    73.06
2030.20    0.198    72.57
2030.30    0.199    72.09
2030.40    0.200    71.61
2030.50    0.201    71.14
2030.60    0.203    70.68
2030.70    0.204    70.22
2030.80    0.205    69.76
2030.90    0.206    69.31
2031.00    0.207    68.87
2031.10    0.209    68.43
2031.20    0.210    68.00
2031.30    0.211    67.57
2031.40    0.212    67.14
2031.50    0.213    66.72
2031.60    0.214    66.31
2031.70    0.216    65.90
2031.80    0.217    65.49
2031.90    0.218    65.09
2032.00    0.219    64.69
2032.10    0.220    64.30
2032.20    0.221    63.91
2032.30    0.222    63.52
2032.40    0.224    63.14
2032.50    0.225    62.77
2032.60    0.226    62.39
2032.70    0.227    62.02
2032.80    0.228    61.65
2032.90    0.229    61.29
2033.00    0.230    60.93
2033.10    0.231    60.58
2033.20    0.232    60.22
2033.30    0.233    59.87
2033.40    0.235    59.53
2033.50    0.236    59.18
2033.60    0.237    58.84
2033.70    0.238    58.50
2033.80    0.239    58.17
2033.90    0.240    57.84
2034.00    0.241    57.51
2034.10    0.242    57.18
2034.20    0.243    56.86
2034.30    0.244    56.54
2034.40    0.245    56.22
2034.50    0.246    55.91
2034.60    0.247    55.59
2034.70    0.248    55.28
2034.80    0.249    54.97
2034.90    0.250    54.67
2035.00    0.250    54.36
2035.10    0.251    54.06
2035.20    0.252    53.76
2035.30    0.253    53.47
2035.40    0.254    53.17
2035.50    0.255    52.88
2035.60    0.256    52.59
2035.70    0.257    52.30
2035.80    0.258    52.01
2035.90    0.258    51.73
2036.00    0.259    51.44
2036.10    0.260    51.16
2036.20    0.261    50.88
2036.30    0.262    50.60
2036.40    0.262    50.33
2036.50    0.263    50.05
2036.60    0.264    49.78
2036.70    0.265    49.51
2036.80    0.265    49.24
2036.90    0.266    48.97
2037.00    0.267    48.70
2037.10    0.268    48.44
2037.20    0.268    48.17
2037.30    0.269    47.91
2037.40    0.270    47.65
2037.50    0.270    47.39
2037.60    0.271    47.13
2037.70    0.272    46.87
2037.80    0.272    46.61
2037.90    0.273    46.36
2038.00    0.273    46.10
2038.10    0.274    45.85
2038.20    0.275    45.60
2038.30    0.275    45.35
2038.40    0.276    45.10
2038.50    0.276    44.85
2038.60    0.277    44.60
2038.70    0.277    44.35
2038.80    0.278    44.11
2038.90    0.278    43.86
2039.00    0.279    43.62
2039.10    0.279    43.37
2039.20    0.280    43.13
2039.30    0.280    42.89
2039.40    0.281    42.65
2039.50    0.281    42.41
2039.60    0.281    42.17
2039.70    0.282    41.93
2039.80    0.282    41.69
2039.90    0.282    41.45
2040.00    0.283    41.21
2040.10    0.283    40.97
2040.20    0.283    40.74
2040.30    0.284    40.50
2040.40    0.284    40.27
2040.50    0.284    40.03
2040.60    0.284    39.80
2040.70    0.285    39.56
2040.80    0.285    39.33
2040.90    0.285    39.09
2041.00    0.285    38.86
2041.10    0.285    38.63
2041.20    0.286    38.39
2041.30    0.286    38.16
2041.40    0.286    37.93
2041.50    0.286    37.70
2041.60    0.286    37.47
2041.70    0.286    37.23
2041.80    0.286    37.00
2041.90    0.286    36.77
2042.00    0.286    36.54
2042.10    0.286    36.31
2042.20    0.286    36.07
2042.30    0.286    35.84
2042.40    0.286    35.61
2042.50    0.286    35.38
2042.60    0.286    35.15
2042.70    0.286    34.92
2042.80    0.286    34.68
2042.90    0.286    34.45
2043.00    0.285    34.22
2043.10    0.285    33.98
2043.20    0.285    33.75
2043.30    0.285    33.52
2043.40    0.285    33.28
2043.50    0.284    33.05
2043.60    0.284    32.81
2043.70    0.284    32.58
2043.80    0.284    32.34
2043.90    0.283    32.11
2044.00    0.283    31.87
2044.10    0.283    31.63
2044.20    0.282    31.39
2044.30    0.282    31.16
2044.40    0.281    30.92
2044.50    0.281    30.68
2044.60    0.280    30.44
2044.70    0.280    30.19
2044.80    0.280    29.95
2044.90    0.279    29.71
2045.00    0.278    29.46
2045.10    0.278    29.22
2045.20    0.277    28.97
2045.30    0.277    28.73
2045.40    0.276    28.48
2045.50    0.275    28.23
2045.60    0.275    27.98
2045.70    0.274    27.72
2045.80    0.273    27.47
2045.90    0.273    27.22
2046.00    0.272    26.96
2046.10    0.271    26.70
2046.20    0.270    26.44
2046.30    0.270    26.18
2046.40    0.269    25.92
2046.50    0.268    25.66
2046.60    0.267    25.39
2046.70    0.266    25.13






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 17:10:31



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