Double Star Calculator - Orbit

Orbital Elements for HDS3211AB

WDS:	HDS3211AB	WDS ID/Discoverer
P:	17.236	Orbital period (years)
a:	0.3373	Semi-major axis (arcseconds)
i:	55.57	Inclination (degrees)
Ω:	69.57	Longitude of ascending node (degrees)
T:	2025.877	Epoch of periastron passage (year)
e:	0.2404	Eccentricity
ω:	116.28	Longitude of periastron (degrees)
Start-Year:	2016.382	Year
End-Year:	2033.618	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS3211AB
Position:	223729.90+392250.7	Epoch-2000 right ascension and declination
WDS-ID:	22375+3923	WDS designation
Discoverer Code:	HDS3211AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	111685	Hipparcos catalog number
V1:	10.04	Magnitude of the primary
V2:	10.47	Magnitude of the secondary
Equinox:		Equinox
Date:		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:	MnA2019	Reference

Double Star Orbit for HDS3211AB

WDS 6th Orbit including measures of HDS3211AB

-- 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 HDS3211AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.217   222.56
--------------------------
2016.38    0.251     4.42
2016.48    0.254     6.47
2016.58    0.257     8.47
2016.68    0.260    10.42
2016.78    0.264    12.32
2016.88    0.267    14.17
2016.98    0.271    15.97
2017.08    0.275    17.72
2017.18    0.279    19.42
2017.28    0.282    21.08
2017.38    0.286    22.69
2017.48    0.290    24.26
2017.58    0.294    25.78
2017.68    0.298    27.27
2017.78    0.302    28.72
2017.88    0.306    30.13
2017.98    0.310    31.51
2018.08    0.314    32.85
2018.18    0.317    34.16
2018.28    0.321    35.44
2018.38    0.325    36.69
2018.48    0.328    37.92
2018.58    0.332    39.12
2018.68    0.335    40.29
2018.78    0.338    41.45
2018.88    0.341    42.58
2018.98    0.344    43.69
2019.08    0.347    44.78
2019.18    0.350    45.85
2019.28    0.352    46.91
2019.38    0.355    47.95
2019.48    0.357    48.98
2019.58    0.359    50.00
2019.68    0.361    51.01
2019.78    0.363    52.00
2019.88    0.364    52.99
2019.98    0.366    53.97
2020.08    0.367    54.94
2020.18    0.368    55.91
2020.28    0.368    56.87
2020.38    0.369    57.83
2020.48    0.369    58.79
2020.58    0.369    59.74
2020.68    0.369    60.70
2020.78    0.369    61.66
2020.88    0.368    62.62
2020.98    0.367    63.58
2021.08    0.366    64.56
2021.18    0.364    65.53
2021.28    0.363    66.52
2021.38    0.361    67.52
2021.48    0.358    68.53
2021.58    0.356    69.55
2021.68    0.353    70.59
2021.78    0.350    71.65
2021.88    0.346    72.72
2021.98    0.342    73.82
2022.08    0.338    74.95
2022.18    0.334    76.10
2022.28    0.329    77.29
2022.38    0.324    78.51
2022.48    0.319    79.76
2022.58    0.314    81.07
2022.68    0.308    82.42
2022.78    0.302    83.82
2022.88    0.295    85.28
2022.98    0.289    86.81
2023.08    0.282    88.42
2023.18    0.275    90.10
2023.28    0.267    91.88
2023.38    0.260    93.76
2023.48    0.252    95.75
2023.58    0.244    97.87
2023.68    0.236   100.14
2023.78    0.228   102.57
2023.88    0.220   105.18
2023.98    0.211   107.99
2024.08    0.203   111.02
2024.18    0.195   114.30
2024.28    0.188   117.86
2024.38    0.180   121.70
2024.48    0.174   125.87
2024.58    0.167   130.36
2024.68    0.162   135.19
2024.78    0.157   140.34
2024.88    0.153   145.79
2024.98    0.150   151.49
2025.08    0.148   157.36
2025.18    0.148   163.33
2025.28    0.148   169.31
2025.38    0.150   175.19
2025.48    0.153   180.89
2025.58    0.157   186.35
2025.68    0.161   191.52
2025.78    0.167   196.38
2025.88    0.173   200.91
2025.98    0.179   205.12
2026.08    0.186   209.03
2026.18    0.193   212.65
2026.28    0.201   216.01
2026.38    0.208   219.14
2026.48    0.215   222.05
2026.58    0.222   224.78
2026.68    0.229   227.33
2026.78    0.236   229.74
2026.88    0.243   232.01
2026.98    0.249   234.17
2027.08    0.255   236.22
2027.18    0.260   238.19
2027.28    0.266   240.07
2027.38    0.270   241.89
2027.48    0.275   243.64
2027.58    0.279   245.34
2027.68    0.282   247.00
2027.78    0.286   248.62
2027.88    0.288   250.20
2027.98    0.291   251.76
2028.08    0.293   253.29
2028.18    0.294   254.80
2028.28    0.295   256.30
2028.38    0.296   257.79
2028.48    0.297   259.27
2028.58    0.297   260.75
2028.68    0.297   262.23
2028.78    0.297   263.71
2028.88    0.296   265.20
2028.98    0.295   266.69
2029.08    0.294   268.20
2029.18    0.292   269.72
2029.28    0.290   271.25
2029.38    0.289   272.81
2029.48    0.287   274.39
2029.58    0.284   275.99
2029.68    0.282   277.61
2029.78    0.279   279.27
2029.88    0.277   280.96
2029.98    0.274   282.68
2030.08    0.271   284.43
2030.18    0.268   286.22
2030.28    0.266   288.05
2030.38    0.263   289.92
2030.48    0.260   291.83
2030.58    0.257   293.78
2030.68    0.254   295.78
2030.78    0.251   297.82
2030.88    0.249   299.91
2030.98    0.246   302.04
2031.08    0.244   304.22
2031.18    0.241   306.44
2031.28    0.239   308.70
2031.38    0.237   311.01
2031.48    0.235   313.35
2031.58    0.233   315.73
2031.68    0.232   318.14
2031.78    0.231   320.57
2031.88    0.230   323.04
2031.98    0.229   325.52
2032.08    0.228   328.02
2032.18    0.228   330.52
2032.28    0.228   333.03
2032.38    0.228   335.54
2032.48    0.229   338.04
2032.58    0.229   340.53
2032.68    0.230   343.00
2032.78    0.232   345.44
2032.88    0.233   347.86
2032.98    0.235   350.24
2033.08    0.237   352.59
2033.18    0.239   354.89
2033.28    0.241   357.16
2033.38    0.244   359.37
2033.48    0.247     1.54
2033.58    0.249     3.66

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 18:42:14