Double Star Calculator - Orbit

Orbital Elements for HDS3129

WDS:	HDS3129	WDS ID/Discoverer
P:	20.570	Orbital period (years)
a:	0.1	Semi-major axis (arcseconds)
i:	124.9	Inclination (degrees)
Ω:	230.1	Longitude of ascending node (degrees)
T:	2005.430	Epoch of periastron passage (year)
e:	0.777	Eccentricity
ω:	273.1	Longitude of periastron (degrees)
Start-Year:	2014.715	Year
End-Year:	2035.285	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS3129
Position:	220255.05+154656.9	Epoch-2000 right ascension and declination
WDS-ID:	22029+1547	WDS designation
Discoverer Code:	HDS3129	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	209421	HD catalog number
Hipparcos number:	108842	Hipparcos catalog number
V1:	7.65	Magnitude of the primary
V2:	8.86	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Tok2015c	Reference

Double Star Orbit for HDS3129

WDS 6th Orbit including measures of HDS3129

-- 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 HDS3129

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.035   234.18
--------------------------
2014.71    0.101   140.81
2014.81    0.101   140.19
2014.91    0.101   139.57
2015.01    0.101   138.96
2015.11    0.101   138.35
2015.21    0.102   137.73
2015.31    0.102   137.12
2015.41    0.102   136.52
2015.51    0.102   135.91
2015.61    0.102   135.30
2015.71    0.102   134.69
2015.81    0.102   134.09
2015.91    0.102   133.48
2016.01    0.102   132.88
2016.11    0.102   132.27
2016.21    0.102   131.67
2016.31    0.102   131.07
2016.41    0.102   130.47
2016.51    0.102   129.86
2016.61    0.102   129.26
2016.71    0.102   128.66
2016.81    0.102   128.06
2016.91    0.102   127.46
2017.01    0.102   126.86
2017.11    0.102   126.26
2017.21    0.102   125.65
2017.31    0.102   125.05
2017.41    0.102   124.45
2017.51    0.102   123.85
2017.61    0.102   123.24
2017.71    0.102   122.64
2017.81    0.102   122.04
2017.91    0.102   121.43
2018.01    0.102   120.83
2018.11    0.102   120.22
2018.21    0.102   119.61
2018.31    0.102   119.00
2018.41    0.102   118.39
2018.51    0.101   117.78
2018.61    0.101   117.17
2018.71    0.101   116.55
2018.81    0.101   115.94
2018.91    0.101   115.32
2019.01    0.101   114.70
2019.11    0.101   114.08
2019.21    0.100   113.46
2019.31    0.100   112.83
2019.41    0.100   112.20
2019.51    0.100   111.57
2019.61    0.100   110.94
2019.71    0.099   110.30
2019.81    0.099   109.67
2019.91    0.099   109.02
2020.01    0.099   108.38
2020.11    0.098   107.73
2020.21    0.098   107.08
2020.31    0.098   106.42
2020.41    0.098   105.76
2020.51    0.097   105.10
2020.61    0.097   104.43
2020.71    0.097   103.76
2020.81    0.096   103.08
2020.91    0.096   102.40
2021.01    0.095   101.71
2021.11    0.095   101.01
2021.21    0.095   100.31
2021.31    0.094    99.60
2021.41    0.094    98.89
2021.51    0.093    98.17
2021.61    0.093    97.44
2021.71    0.092    96.70
2021.81    0.092    95.96
2021.91    0.091    95.20
2022.01    0.091    94.44
2022.11    0.090    93.66
2022.21    0.089    92.88
2022.31    0.089    92.08
2022.41    0.088    91.27
2022.51    0.087    90.45
2022.61    0.086    89.62
2022.71    0.086    88.77
2022.81    0.085    87.90
2022.91    0.084    87.02
2023.01    0.083    86.11
2023.11    0.082    85.19
2023.21    0.081    84.25
2023.31    0.080    83.28
2023.41    0.079    82.29
2023.51    0.078    81.27
2023.61    0.077    80.23
2023.71    0.076    79.14
2023.81    0.074    78.03
2023.91    0.073    76.87
2024.01    0.072    75.67
2024.11    0.070    74.41
2024.21    0.069    73.10
2024.31    0.067    71.73
2024.41    0.065    70.29
2024.51    0.063    68.76
2024.61    0.061    67.13
2024.71    0.059    65.39
2024.81    0.057    63.51
2024.91    0.054    61.46
2025.01    0.052    59.20
2025.11    0.049    56.69
2025.21    0.045    53.83
2025.31    0.042    50.50
2025.41    0.038    46.52
2025.51    0.034    41.57
2025.61    0.029    35.04
2025.71    0.024    25.75
2025.81    0.018    11.07
2025.91    0.014   345.87
2026.01    0.013   308.97
2026.11    0.016   277.34
2026.21    0.021   258.42
2026.31    0.026   246.94
2026.41    0.031   239.17
2026.51    0.035   233.41
2026.61    0.039   228.85
2026.71    0.043   225.07
2026.81    0.046   221.83
2026.91    0.048   218.99
2027.01    0.051   216.44
2027.11    0.053   214.13
2027.21    0.056   212.01
2027.31    0.058   210.04
2027.41    0.059   208.19
2027.51    0.061   206.46
2027.61    0.063   204.82
2027.71    0.064   203.25
2027.81    0.066   201.76
2027.91    0.067   200.33
2028.01    0.068   198.96
2028.11    0.070   197.64
2028.21    0.071   196.36
2028.31    0.072   195.12
2028.41    0.073   193.91
2028.51    0.074   192.75
2028.61    0.075   191.61
2028.71    0.076   190.50
2028.81    0.077   189.42
2028.91    0.078   188.36
2029.01    0.078   187.32
2029.11    0.079   186.30
2029.21    0.080   185.31
2029.31    0.081   184.33
2029.41    0.081   183.37
2029.51    0.082   182.43
2029.61    0.083   181.50
2029.71    0.083   180.59
2029.81    0.084   179.69
2029.91    0.085   178.80
2030.01    0.085   177.92
2030.11    0.086   177.06
2030.21    0.086   176.21
2030.31    0.087   175.37
2030.41    0.087   174.53
2030.51    0.088   173.71
2030.61    0.088   172.90
2030.71    0.089   172.10
2030.81    0.089   171.30
2030.91    0.090   170.51
2031.01    0.090   169.73
2031.11    0.091   168.96
2031.21    0.091   168.20
2031.31    0.091   167.44
2031.41    0.092   166.68
2031.51    0.092   165.94
2031.61    0.092   165.20
2031.71    0.093   164.46
2031.81    0.093   163.74
2031.91    0.094   163.01
2032.01    0.094   162.30
2032.11    0.094   161.58
2032.21    0.095   160.88
2032.31    0.095   160.17
2032.41    0.095   159.47
2032.51    0.095   158.78
2032.61    0.096   158.09
2032.71    0.096   157.40
2032.81    0.096   156.72
2032.91    0.097   156.04
2033.01    0.097   155.37
2033.11    0.097   154.70
2033.21    0.097   154.03
2033.31    0.098   153.36
2033.41    0.098   152.70
2033.51    0.098   152.05
2033.61    0.098   151.39
2033.71    0.098   150.74
2033.81    0.099   150.09
2033.91    0.099   149.44
2034.01    0.099   148.80
2034.11    0.099   148.16
2034.21    0.099   147.52
2034.31    0.100   146.88
2034.41    0.100   146.25
2034.51    0.100   145.61
2034.61    0.100   144.98
2034.71    0.100   144.35
2034.81    0.100   143.73
2034.91    0.101   143.10
2035.01    0.101   142.48
2035.11    0.101   141.86
2035.21    0.101   141.24

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 18:35:27