Double Star Calculator - Orbit

Orbital Elements for HDS2210

WDS:	HDS2210	WDS ID/Discoverer
P:	21.260	Orbital period (years)
a:	0.1224	Semi-major axis (arcseconds)
i:	115.0	Inclination (degrees)
Ω:	8.7	Longitude of ascending node (degrees)
T:	2026.330	Epoch of periastron passage (year)
e:	0.614	Eccentricity
ω:	44.5	Longitude of periastron (degrees)
Start-Year:	2014.37	Year
End-Year:	2035.63	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2210
Position:	153926.44-135438.8	Epoch-2000 right ascension and declination
WDS-ID:	15394-1355	WDS designation
Discoverer Code:	HDS2210	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	139591	HD catalog number
Hipparcos number:	76676	Hipparcos catalog number
V1:	8.78	Magnitude of the primary
V2:	9.09	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2024	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:	Tok2024e	Reference

Double Star Orbit for HDS2210

WDS 6th Orbit including measures of HDS2210

-- 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 HDS2210

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.030   332.92
--------------------------
2014.37    0.163   170.66
2014.47    0.162   170.34
2014.57    0.161   170.01
2014.67    0.161   169.69
2014.77    0.160   169.36
2014.87    0.159   169.03
2014.97    0.159   168.69
2015.07    0.158   168.36
2015.17    0.157   168.02
2015.27    0.156   167.67
2015.37    0.156   167.32
2015.47    0.155   166.97
2015.57    0.154   166.62
2015.67    0.153   166.26
2015.77    0.152   165.89
2015.87    0.151   165.52
2015.97    0.150   165.15
2016.07    0.149   164.77
2016.17    0.148   164.38
2016.27    0.147   164.00
2016.37    0.146   163.60
2016.47    0.145   163.20
2016.57    0.143   162.79
2016.67    0.142   162.38
2016.77    0.141   161.95
2016.87    0.140   161.53
2016.97    0.139   161.09
2017.07    0.137   160.64
2017.17    0.136   160.19
2017.27    0.135   159.73
2017.37    0.134   159.26
2017.47    0.132   158.78
2017.57    0.131   158.29
2017.67    0.129   157.79
2017.77    0.128   157.28
2017.87    0.127   156.76
2017.97    0.125   156.23
2018.07    0.124   155.68
2018.17    0.122   155.12
2018.27    0.121   154.55
2018.37    0.119   153.97
2018.47    0.118   153.36
2018.57    0.116   152.75
2018.67    0.115   152.11
2018.77    0.113   151.46
2018.87    0.112   150.79
2018.97    0.110   150.11
2019.07    0.108   149.40
2019.17    0.107   148.67
2019.27    0.105   147.91
2019.37    0.104   147.14
2019.47    0.102   146.34
2019.57    0.100   145.51
2019.67    0.099   144.66
2019.77    0.097   143.78
2019.87    0.095   142.86
2019.97    0.094   141.92
2020.07    0.092   140.93
2020.17    0.090   139.92
2020.27    0.089   138.86
2020.37    0.087   137.77
2020.47    0.085   136.63
2020.57    0.084   135.45
2020.67    0.082   134.22
2020.77    0.081   132.94
2020.87    0.079   131.61
2020.97    0.077   130.22
2021.07    0.076   128.77
2021.17    0.074   127.26
2021.27    0.073   125.69
2021.37    0.071   124.05
2021.47    0.070   122.34
2021.57    0.068   120.55
2021.67    0.067   118.69
2021.77    0.065   116.75
2021.87    0.064   114.73
2021.97    0.063   112.62
2022.07    0.062   110.43
2022.17    0.060   108.15
2022.27    0.059   105.78
2022.37    0.058   103.33
2022.47    0.057   100.79
2022.57    0.056    98.17
2022.67    0.056    95.47
2022.77    0.055    92.70
2022.87    0.054    89.86
2022.97    0.054    86.96
2023.07    0.053    84.01
2023.17    0.053    81.02
2023.27    0.053    78.00
2023.37    0.053    74.96
2023.47    0.053    71.91
2023.57    0.053    68.86
2023.67    0.053    65.82
2023.77    0.053    62.81
2023.87    0.053    59.82
2023.97    0.054    56.87
2024.07    0.054    53.97
2024.17    0.055    51.11
2024.27    0.055    48.30
2024.37    0.056    45.55
2024.47    0.056    42.85
2024.57    0.057    40.20
2024.67    0.057    37.60
2024.77    0.058    35.04
2024.87    0.058    32.52
2024.97    0.058    30.02
2025.07    0.059    27.55
2025.17    0.059    25.08
2025.27    0.058    22.61
2025.37    0.058    20.12
2025.47    0.057    17.58
2025.57    0.056    14.97
2025.67    0.055    12.25
2025.77    0.053     9.39
2025.87    0.051     6.31
2025.97    0.049     2.95
2026.07    0.046   359.18
2026.17    0.043   354.85
2026.27    0.039   349.73
2026.37    0.035   343.49
2026.47    0.031   335.66
2026.57    0.027   325.65
2026.67    0.024   312.90
2026.77    0.023   297.42
2026.87    0.022   280.56
2026.97    0.024   264.61
2027.07    0.027   251.27
2027.17    0.030   240.85
2027.27    0.035   232.85
2027.37    0.039   226.66
2027.47    0.044   221.79
2027.57    0.049   217.86
2027.67    0.054   214.63
2027.77    0.058   211.93
2027.87    0.063   209.61
2027.97    0.067   207.61
2028.07    0.072   205.86
2028.17    0.076   204.30
2028.27    0.080   202.90
2028.37    0.084   201.63
2028.47    0.088   200.48
2028.57    0.091   199.42
2028.67    0.095   198.44
2028.77    0.098   197.53
2028.87    0.102   196.68
2028.97    0.105   195.89
2029.07    0.108   195.14
2029.17    0.111   194.43
2029.27    0.114   193.76
2029.37    0.116   193.12
2029.47    0.119   192.51
2029.57    0.122   191.92
2029.67    0.124   191.36
2029.77    0.126   190.82
2029.87    0.129   190.30
2029.97    0.131   189.80
2030.07    0.133   189.31
2030.17    0.135   188.84
2030.27    0.137   188.38
2030.37    0.139   187.94
2030.47    0.141   187.51
2030.57    0.142   187.08
2030.67    0.144   186.67
2030.77    0.146   186.27
2030.87    0.147   185.88
2030.97    0.149   185.49
2031.07    0.150   185.11
2031.17    0.151   184.74
2031.27    0.153   184.37
2031.37    0.154   184.01
2031.47    0.155   183.66
2031.57    0.156   183.31
2031.67    0.157   182.96
2031.77    0.158   182.62
2031.87    0.159   182.28
2031.97    0.160   181.95
2032.07    0.161   181.62
2032.17    0.162   181.30
2032.27    0.162   180.97
2032.37    0.163   180.65
2032.47    0.164   180.34
2032.57    0.164   180.02
2032.67    0.165   179.71
2032.77    0.165   179.40
2032.87    0.166   179.09
2032.97    0.166   178.78
2033.07    0.166   178.48
2033.17    0.167   178.17
2033.27    0.167   177.87
2033.37    0.167   177.56
2033.47    0.167   177.26
2033.57    0.168   176.96
2033.67    0.168   176.66
2033.77    0.168   176.36
2033.87    0.168   176.06
2033.97    0.168   175.76
2034.07    0.168   175.46
2034.17    0.168   175.15
2034.27    0.168   174.85
2034.37    0.167   174.55
2034.47    0.167   174.25
2034.57    0.167   173.95
2034.67    0.167   173.64
2034.77    0.166   173.34
2034.87    0.166   173.03
2034.97    0.166   172.72
2035.07    0.165   172.42
2035.17    0.165   172.11
2035.27    0.165   171.79
2035.37    0.164   171.48
2035.47    0.164   171.17
2035.57    0.163   170.85

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 17:18:02