Double Star Calculator - Orbit

Orbital Elements for HDS2615AB
WDS: HDS2615AB WDS ID/Discoverer
P: 37.290 Orbital period (years)
a: 0.557 Semi-major axis (arcseconds)
i: 95.6 Inclination (degrees)
Ω: 173.23 Longitude of ascending node (degrees)
T: 1988.660 Epoch of periastron passage (year)
e: 0.794 Eccentricity
ω: 84.5 Longitude of periastron (degrees)
Start-Year: 2006.355 Year
End-Year: 2043.645 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HDS2615AB
Position: 182806.17-264525.8 Epoch-2000 right ascension and declination
WDS-ID: 18281-2645 WDS designation
Discoverer Code: HDS2615AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 169938 HD catalog number
Hipparcos number: 90510 Hipparcos catalog number
V1: 6.40 Magnitude of the primary
V2: 9.31 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: Msn2023 Reference

Double Star Orbit for HDS2615AB



WDS 6th Orbit including measures of HDS2615AB

-- 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 HDS2615AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.127   356.83
--------------------------
2006.36    0.158   315.68
2006.45    0.156   314.96
2006.55    0.154   314.22
2006.65    0.151   313.45
2006.75    0.149   312.67
2006.85    0.147   311.85
2006.95    0.144   311.01
2007.05    0.142   310.14
2007.15    0.140   309.25
2007.25    0.137   308.32
2007.35    0.135   307.37
2007.45    0.133   306.38
2007.55    0.131   305.36
2007.65    0.129   304.31
2007.75    0.127   303.22
2007.85    0.125   302.10
2007.95    0.123   300.94
2008.05    0.121   299.74
2008.15    0.119   298.50
2008.25    0.117   297.23
2008.35    0.115   295.91
2008.45    0.114   294.56
2008.55    0.112   293.16
2008.65    0.110   291.73
2008.75    0.109   290.25
2008.85    0.107   288.73
2008.95    0.106   287.17
2009.05    0.105   285.57
2009.15    0.103   283.93
2009.25    0.102   282.25
2009.35    0.101   280.53
2009.45    0.100   278.78
2009.55    0.099   277.00
2009.65    0.099   275.18
2009.75    0.098   273.34
2009.85    0.097   271.48
2009.95    0.097   269.59
2010.05    0.096   267.68
2010.15    0.096   265.76
2010.25    0.096   263.83
2010.35    0.096   261.89
2010.45    0.096   259.96
2010.55    0.096   258.02
2010.65    0.096   256.09
2010.75    0.096   254.17
2010.85    0.097   252.27
2010.95    0.097   250.39
2011.05    0.098   248.52
2011.15    0.099   246.69
2011.25    0.100   244.88
2011.35    0.100   243.10
2011.45    0.101   241.36
2011.55    0.103   239.65
2011.65    0.104   237.97
2011.75    0.105   236.34
2011.85    0.106   234.75
2011.95    0.108   233.19
2012.05    0.109   231.68
2012.15    0.111   230.21
2012.25    0.112   228.78
2012.35    0.114   227.39
2012.45    0.116   226.04
2012.55    0.117   224.73
2012.65    0.119   223.46
2012.75    0.121   222.23
2012.85    0.123   221.04
2012.95    0.125   219.89
2013.05    0.127   218.77
2013.15    0.129   217.68
2013.25    0.131   216.64
2013.35    0.133   215.62
2013.45    0.135   214.64
2013.55    0.138   213.68
2013.65    0.140   212.76
2013.75    0.142   211.87
2013.85    0.144   211.00
2013.95    0.147   210.16
2014.05    0.149   209.35
2014.15    0.151   208.56
2014.25    0.154   207.80
2014.35    0.156   207.06
2014.45    0.158   206.34
2014.55    0.161   205.64
2014.65    0.163   204.96
2014.75    0.166   204.30
2014.85    0.168   203.67
2014.95    0.170   203.04
2015.05    0.173   202.44
2015.15    0.175   201.86
2015.25    0.178   201.29
2015.35    0.180   200.73
2015.45    0.183   200.19
2015.55    0.185   199.67
2015.65    0.188   199.16
2015.75    0.190   198.66
2015.85    0.193   198.17
2015.95    0.195   197.70
2016.05    0.197   197.24
2016.15    0.200   196.79
2016.25    0.202   196.35
2016.35    0.205   195.92
2016.45    0.207   195.50
2016.55    0.210   195.09
2016.65    0.212   194.69
2016.75    0.214   194.30
2016.85    0.217   193.92
2016.95    0.219   193.55
2017.05    0.222   193.18
2017.15    0.224   192.82
2017.25    0.226   192.47
2017.35    0.229   192.13
2017.45    0.231   191.79
2017.55    0.233   191.46
2017.65    0.236   191.14
2017.75    0.238   190.82
2017.85    0.240   190.51
2017.95    0.242   190.21
2018.05    0.245   189.91
2018.15    0.247   189.61
2018.25    0.249   189.32
2018.35    0.251   189.04
2018.45    0.253   188.76
2018.55    0.255   188.48
2018.65    0.257   188.21
2018.75    0.259   187.95
2018.85    0.262   187.69
2018.95    0.263   187.43
2019.05    0.265   187.17
2019.15    0.267   186.92
2019.25    0.269   186.68
2019.35    0.271   186.43
2019.45    0.273   186.19
2019.55    0.275   185.96
2019.65    0.276   185.72
2019.75    0.278   185.49
2019.85    0.280   185.26
2019.95    0.281   185.04
2020.05    0.283   184.82
2020.15    0.285   184.59
2020.25    0.286   184.38
2020.35    0.287   184.16
2020.45    0.289   183.95
2020.55    0.290   183.73
2020.65    0.291   183.52
2020.75    0.293   183.32
2020.85    0.294   183.11
2020.95    0.295   182.90
2021.05    0.296   182.70
2021.15    0.297   182.50
2021.25    0.298   182.30
2021.35    0.298   182.10
2021.45    0.299   181.90
2021.55    0.300   181.70
2021.65    0.300   181.50
2021.75    0.301   181.30
2021.85    0.301   181.11
2021.95    0.301   180.91
2022.05    0.301   180.72
2022.15    0.301   180.52
2022.25    0.301   180.32
2022.35    0.301   180.13
2022.45    0.301   179.93
2022.55    0.300   179.74
2022.65    0.299   179.54
2022.75    0.299   179.34
2022.85    0.298   179.14
2022.95    0.296   178.94
2023.05    0.295   178.73
2023.15    0.293   178.53
2023.25    0.292   178.32
2023.35    0.290   178.11
2023.45    0.287   177.90
2023.55    0.285   177.68
2023.65    0.282   177.46
2023.75    0.279   177.23
2023.85    0.275   177.00
2023.95    0.272   176.76
2024.05    0.267   176.52
2024.15    0.263   176.27
2024.25    0.258   176.00
2024.35    0.252   175.73
2024.45    0.246   175.44
2024.55    0.239   175.14
2024.65    0.231   174.82
2024.75    0.223   174.47
2024.85    0.213   174.10
2024.95    0.203   173.69
2025.05    0.191   173.23
2025.15    0.178   172.71
2025.25    0.164   172.11
2025.35    0.148   171.38
2025.45    0.130   170.46
2025.55    0.110   169.22
2025.65    0.088   167.39
2025.75    0.064   164.23
2025.85    0.038   157.00
2025.95    0.015   123.99
2026.05    0.021    25.20
2026.15    0.046     6.88
2026.25    0.072     1.54
2026.35    0.095   358.94
2026.45    0.118   357.37
2026.55    0.138   356.28
2026.65    0.157   355.45
2026.75    0.174   354.80
2026.85    0.189   354.26
2026.95    0.204   353.80
2027.05    0.217   353.40
2027.15    0.229   353.05
2027.25    0.240   352.72
2027.35    0.251   352.43
2027.45    0.260   352.16
2027.55    0.269   351.90
2027.65    0.278   351.67
2027.75    0.286   351.44
2027.85    0.293   351.23
2027.95    0.300   351.03
2028.05    0.306   350.83
2028.15    0.312   350.65
2028.25    0.318   350.47
2028.35    0.323   350.30
2028.45    0.328   350.13
2028.55    0.332   349.96
2028.65    0.337   349.81
2028.75    0.341   349.65
2028.85    0.345   349.50
2028.95    0.348   349.35
2029.05    0.352   349.21
2029.15    0.355   349.06
2029.25    0.358   348.92
2029.35    0.360   348.79
2029.45    0.363   348.65
2029.55    0.365   348.52
2029.65    0.368   348.38
2029.75    0.370   348.25
2029.85    0.372   348.12
2029.95    0.373   348.00
2030.05    0.375   347.87
2030.15    0.377   347.74
2030.25    0.378   347.62
2030.35    0.379   347.50
2030.45    0.380   347.37
2030.55    0.381   347.25
2030.65    0.382   347.13
2030.75    0.383   347.01
2030.85    0.384   346.89
2030.95    0.385   346.77
2031.05    0.385   346.65
2031.15    0.386   346.53
2031.25    0.386   346.41
2031.35    0.386   346.29
2031.45    0.387   346.17
2031.55    0.387   346.05
2031.65    0.387   345.93
2031.75    0.387   345.81
2031.85    0.387   345.69
2031.95    0.386   345.57
2032.05    0.386   345.46
2032.15    0.386   345.34
2032.25    0.386   345.22
2032.35    0.385   345.10
2032.45    0.385   344.98
2032.55    0.384   344.86
2032.65    0.384   344.74
2032.75    0.383   344.62
2032.85    0.382   344.49
2032.95    0.382   344.37
2033.05    0.381   344.25
2033.15    0.380   344.13
2033.25    0.379   344.00
2033.35    0.378   343.88
2033.45    0.377   343.76
2033.55    0.376   343.63
2033.65    0.375   343.50
2033.75    0.374   343.38
2033.85    0.373   343.25
2033.95    0.372   343.12
2034.05    0.370   342.99
2034.15    0.369   342.86
2034.25    0.368   342.73
2034.35    0.366   342.60
2034.45    0.365   342.47
2034.55    0.364   342.33
2034.65    0.362   342.20
2034.75    0.361   342.06
2034.85    0.359   341.93
2034.95    0.358   341.79
2035.05    0.356   341.65
2035.15    0.354   341.51
2035.25    0.353   341.36
2035.35    0.351   341.22
2035.45    0.349   341.08
2035.55    0.348   340.93
2035.65    0.346   340.78
2035.75    0.344   340.63
2035.85    0.342   340.48
2035.95    0.341   340.33
2036.05    0.339   340.18
2036.15    0.337   340.02
2036.25    0.335   339.86
2036.35    0.333   339.70
2036.45    0.331   339.54
2036.55    0.329   339.38
2036.65    0.327   339.21
2036.75    0.325   339.05
2036.85    0.323   338.88
2036.95    0.321   338.71
2037.05    0.319   338.53
2037.15    0.317   338.36
2037.25    0.315   338.18
2037.35    0.312   338.00
2037.45    0.310   337.81
2037.55    0.308   337.63
2037.65    0.306   337.44
2037.75    0.304   337.25
2037.85    0.302   337.06
2037.95    0.299   336.86
2038.05    0.297   336.66
2038.15    0.295   336.46
2038.25    0.292   336.25
2038.35    0.290   336.04
2038.45    0.288   335.83
2038.55    0.286   335.61
2038.65    0.283   335.39
2038.75    0.281   335.17
2038.85    0.278   334.94
2038.95    0.276   334.71
2039.05    0.274   334.47
2039.15    0.271   334.24
2039.25    0.269   333.99
2039.35    0.266   333.74
2039.45    0.264   333.49
2039.55    0.262   333.23
2039.65    0.259   332.97
2039.75    0.257   332.70
2039.85    0.254   332.43
2039.95    0.252   332.15
2040.05    0.249   331.87
2040.15    0.247   331.58
2040.25    0.244   331.29
2040.35    0.242   330.99
2040.45    0.239   330.68
2040.55    0.237   330.36
2040.65    0.234   330.04
2040.75    0.232   329.72
2040.85    0.229   329.38
2040.95    0.226   329.04
2041.05    0.224   328.69
2041.15    0.221   328.33
2041.25    0.219   327.96
2041.35    0.216   327.59
2041.45    0.214   327.20
2041.55    0.211   326.81
2041.65    0.209   326.41
2041.75    0.206   325.99
2041.85    0.203   325.57
2041.95    0.201   325.13
2042.05    0.198   324.69
2042.15    0.196   324.23
2042.25    0.193   323.76
2042.35    0.191   323.28
2042.45    0.188   322.78
2042.55    0.186   322.27
2042.65    0.183   321.75
2042.75    0.181   321.21
2042.85    0.178   320.66
2042.95    0.175   320.09
2043.05    0.173   319.51
2043.15    0.170   318.90
2043.25    0.168   318.28
2043.35    0.166   317.64
2043.45    0.163   316.99
2043.55    0.161   316.31






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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 17:52:02



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