Double Star Calculator - Orbit

Orbital Elements for HDS211AA,AB

WDS:	HDS211AA,AB	WDS ID/Discoverer
P:	22.740	Orbital period (years)
a:	0.207	Semi-major axis (arcseconds)
i:	127.7	Inclination (degrees)
Ω:	68.8	Longitude of ascending node (degrees)
T:	1996.990	Epoch of periastron passage (year)
e:	0.462	Eccentricity
ω:	28.5	Longitude of periastron (degrees)
Start-Year:	2013.63	Year
End-Year:	2036.37	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS211AA,AB
Position:	013430.53+780346.6	Epoch-2000 right ascension and declination
WDS-ID:	01345+7804	WDS designation
Discoverer Code:	HDS211AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	7338	Hipparcos catalog number
V1:	11.02	Magnitude of the primary
V2:	12.76	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2006	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Doc2007g	Reference

Double Star Orbit for HDS211AA,AB

WDS 6th Orbit including measures of HDS211AA,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 HDS211AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.265   251.52
--------------------------
2013.63    0.174   193.04
2013.73    0.171   191.80
2013.83    0.168   190.53
2013.93    0.166   189.21
2014.03    0.163   187.85
2014.13    0.161   186.45
2014.23    0.158   185.00
2014.33    0.156   183.50
2014.43    0.153   181.96
2014.53    0.151   180.37
2014.63    0.148   178.72
2014.73    0.146   177.02
2014.83    0.144   175.27
2014.93    0.142   173.46
2015.03    0.139   171.59
2015.13    0.137   169.67
2015.23    0.135   167.69
2015.33    0.133   165.65
2015.43    0.131   163.55
2015.53    0.130   161.39
2015.63    0.128   159.17
2015.73    0.126   156.89
2015.83    0.125   154.57
2015.93    0.124   152.18
2016.03    0.122   149.75
2016.13    0.121   147.27
2016.23    0.120   144.75
2016.33    0.119   142.19
2016.43    0.119   139.59
2016.53    0.118   136.96
2016.63    0.118   134.31
2016.73    0.117   131.64
2016.83    0.117   128.95
2016.93    0.117   126.26
2017.03    0.117   123.56
2017.13    0.117   120.86
2017.23    0.117   118.17
2017.33    0.117   115.48
2017.43    0.117   112.81
2017.53    0.118   110.15
2017.63    0.118   107.51
2017.73    0.119   104.88
2017.83    0.119   102.27
2017.93    0.119    99.68
2018.03    0.120    97.11
2018.13    0.120    94.55
2018.23    0.120    92.00
2018.33    0.120    89.46
2018.43    0.120    86.93
2018.53    0.120    84.39
2018.63    0.120    81.85
2018.73    0.120    79.29
2018.83    0.119    76.70
2018.93    0.118    74.09
2019.03    0.117    71.43
2019.13    0.116    68.71
2019.23    0.114    65.93
2019.33    0.112    63.07
2019.43    0.110    60.10
2019.53    0.108    57.02
2019.63    0.106    53.81
2019.73    0.103    50.43
2019.83    0.100    46.88
2019.93    0.098    43.12
2020.03    0.095    39.14
2020.13    0.092    34.92
2020.23    0.089    30.43
2020.33    0.087    25.68
2020.43    0.084    20.65
2020.53    0.082    15.36
2020.63    0.081     9.85
2020.73    0.080     4.16
2020.83    0.079   358.34
2020.93    0.079   352.49
2021.03    0.080   346.68
2021.13    0.081   340.98
2021.23    0.083   335.48
2021.33    0.085   330.23
2021.43    0.087   325.26
2021.53    0.090   320.61
2021.63    0.094   316.27
2021.73    0.097   312.24
2021.83    0.101   308.52
2021.93    0.105   305.08
2022.03    0.110   301.90
2022.13    0.114   298.96
2022.23    0.119   296.24
2022.33    0.123   293.73
2022.43    0.128   291.39
2022.53    0.132   289.21
2022.63    0.137   287.19
2022.73    0.142   285.29
2022.83    0.146   283.51
2022.93    0.151   281.84
2023.03    0.155   280.27
2023.13    0.160   278.79
2023.23    0.164   277.39
2023.33    0.168   276.05
2023.43    0.173   274.79
2023.53    0.177   273.59
2023.63    0.181   272.44
2023.73    0.185   271.34
2023.83    0.189   270.29
2023.93    0.193   269.28
2024.03    0.197   268.31
2024.13    0.201   267.38
2024.23    0.204   266.48
2024.33    0.208   265.62
2024.43    0.211   264.78
2024.53    0.215   263.97
2024.63    0.218   263.18
2024.73    0.221   262.42
2024.83    0.224   261.68
2024.93    0.228   260.96
2025.03    0.231   260.26
2025.13    0.233   259.58
2025.23    0.236   258.91
2025.33    0.239   258.26
2025.43    0.242   257.62
2025.53    0.244   257.00
2025.63    0.247   256.39
2025.73    0.249   255.79
2025.83    0.252   255.20
2025.93    0.254   254.63
2026.03    0.256   254.06
2026.13    0.258   253.51
2026.23    0.260   252.96
2026.33    0.262   252.42
2026.43    0.264   251.89
2026.53    0.266   251.36
2026.63    0.268   250.85
2026.73    0.269   250.34
2026.83    0.271   249.83
2026.93    0.273   249.34
2027.03    0.274   248.84
2027.13    0.275   248.36
2027.23    0.277   247.87
2027.33    0.278   247.39
2027.43    0.279   246.92
2027.53    0.280   246.45
2027.63    0.281   245.98
2027.73    0.282   245.52
2027.83    0.283   245.06
2027.93    0.284   244.60
2028.03    0.285   244.15
2028.13    0.286   243.70
2028.23    0.286   243.25
2028.33    0.287   242.80
2028.43    0.287   242.35
2028.53    0.288   241.91
2028.63    0.288   241.46
2028.73    0.289   241.02
2028.83    0.289   240.58
2028.93    0.289   240.14
2029.03    0.289   239.70
2029.13    0.289   239.26
2029.23    0.289   238.82
2029.33    0.289   238.38
2029.43    0.289   237.94
2029.53    0.289   237.50
2029.63    0.289   237.06
2029.73    0.289   236.62
2029.83    0.289   236.18
2029.93    0.288   235.74
2030.03    0.288   235.30
2030.13    0.287   234.85
2030.23    0.287   234.40
2030.33    0.286   233.96
2030.43    0.286   233.51
2030.53    0.285   233.06
2030.63    0.284   232.60
2030.73    0.284   232.14
2030.83    0.283   231.69
2030.93    0.282   231.22
2031.03    0.281   230.76
2031.13    0.280   230.29
2031.23    0.279   229.82
2031.33    0.278   229.35
2031.43    0.277   228.87
2031.53    0.276   228.38
2031.63    0.274   227.90
2031.73    0.273   227.41
2031.83    0.272   226.91
2031.93    0.270   226.41
2032.03    0.269   225.90
2032.13    0.268   225.39
2032.23    0.266   224.88
2032.33    0.265   224.35
2032.43    0.263   223.82
2032.53    0.261   223.29
2032.63    0.260   222.75
2032.73    0.258   222.20
2032.83    0.256   221.64
2032.93    0.254   221.08
2033.03    0.253   220.50
2033.13    0.251   219.92
2033.23    0.249   219.33
2033.33    0.247   218.73
2033.43    0.245   218.12
2033.53    0.243   217.51
2033.63    0.241   216.88
2033.73    0.239   216.24
2033.83    0.236   215.58
2033.93    0.234   214.92
2034.03    0.232   214.24
2034.13    0.230   213.55
2034.23    0.228   212.85
2034.33    0.225   212.13
2034.43    0.223   211.40
2034.53    0.221   210.65
2034.63    0.218   209.89
2034.73    0.216   209.10
2034.83    0.213   208.31
2034.93    0.211   207.49
2035.03    0.208   206.65
2035.13    0.206   205.79
2035.23    0.203   204.91
2035.33    0.201   204.01
2035.43    0.198   203.09
2035.53    0.196   202.14
2035.63    0.193   201.16
2035.73    0.190   200.16
2035.83    0.188   199.13
2035.93    0.185   198.08
2036.03    0.183   196.99
2036.13    0.180   195.87
2036.23    0.177   194.72
2036.33    0.175   193.53

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 14:51:56