Double Star Calculator - Orbit

Orbital Elements for HDS2506

WDS:	HDS2506	WDS ID/Discoverer
P:	20.420	Orbital period (years)
a:	0.3648	Semi-major axis (arcseconds)
i:	104.61	Inclination (degrees)
Ω:	129.31	Longitude of ascending node (degrees)
T:	2027.807	Epoch of periastron passage (year)
e:	0.539	Eccentricity
ω:	233.9	Longitude of periastron (degrees)
Start-Year:	2014.79	Year
End-Year:	2035.21	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2506
Position:	174300.81+054721.4	Epoch-2000 right ascension and declination
WDS-ID:	17430+0547	WDS designation
Discoverer Code:	HDS2506	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	86707	Hipparcos catalog number
V1:	10.92	Magnitude of the primary
V2:	12.76	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:	MnA2019	Reference

Double Star Orbit for HDS2506

WDS 6th Orbit including measures of HDS2506

-- 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 HDS2506

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.213   314.58
--------------------------
2014.79    0.438   119.07
2014.89    0.436   118.81
2014.99    0.434   118.55
2015.09    0.433   118.28
2015.19    0.430   118.01
2015.29    0.428   117.74
2015.39    0.426   117.47
2015.49    0.424   117.19
2015.59    0.421   116.91
2015.69    0.418   116.63
2015.79    0.416   116.34
2015.89    0.413   116.05
2015.99    0.410   115.76
2016.09    0.407   115.46
2016.19    0.404   115.16
2016.29    0.401   114.85
2016.39    0.397   114.53
2016.49    0.394   114.22
2016.59    0.390   113.89
2016.69    0.387   113.56
2016.79    0.383   113.22
2016.89    0.379   112.88
2016.99    0.375   112.53
2017.09    0.371   112.17
2017.19    0.367   111.81
2017.29    0.363   111.43
2017.39    0.359   111.05
2017.49    0.355   110.66
2017.59    0.350   110.26
2017.69    0.346   109.85
2017.79    0.341   109.43
2017.89    0.337   108.99
2017.99    0.332   108.55
2018.09    0.328   108.09
2018.19    0.323   107.62
2018.29    0.318   107.13
2018.39    0.313   106.63
2018.49    0.308   106.11
2018.59    0.303   105.58
2018.69    0.298   105.03
2018.79    0.293   104.46
2018.89    0.288   103.87
2018.99    0.283   103.25
2019.09    0.277   102.62
2019.19    0.272   101.96
2019.29    0.267   101.27
2019.39    0.261   100.56
2019.49    0.256    99.81
2019.59    0.251    99.04
2019.69    0.245    98.23
2019.79    0.240    97.38
2019.89    0.234    96.49
2019.99    0.229    95.56
2020.09    0.223    94.59
2020.19    0.218    93.56
2020.29    0.212    92.48
2020.39    0.207    91.35
2020.49    0.202    90.16
2020.59    0.196    88.90
2020.69    0.191    87.56
2020.79    0.185    86.15
2020.89    0.180    84.66
2020.99    0.175    83.08
2021.09    0.170    81.41
2021.19    0.165    79.63
2021.29    0.160    77.74
2021.39    0.155    75.73
2021.49    0.151    73.60
2021.59    0.146    71.34
2021.69    0.142    68.93
2021.79    0.138    66.38
2021.89    0.134    63.69
2021.99    0.130    60.84
2022.09    0.127    57.83
2022.19    0.124    54.68
2022.29    0.122    51.38
2022.39    0.119    47.94
2022.49    0.118    44.39
2022.59    0.116    40.73
2022.69    0.115    37.00
2022.79    0.114    33.21
2022.89    0.114    29.41
2022.99    0.115    25.60
2023.09    0.115    21.84
2023.19    0.117    18.13
2023.29    0.118    14.51
2023.39    0.120    11.00
2023.49    0.123     7.62
2023.59    0.125     4.37
2023.69    0.128     1.27
2023.79    0.131   358.31
2023.89    0.135   355.50
2023.99    0.139   352.84
2024.09    0.143   350.31
2024.19    0.147   347.93
2024.29    0.151   345.67
2024.39    0.155   343.54
2024.49    0.159   341.52
2024.59    0.164   339.61
2024.69    0.168   337.80
2024.79    0.172   336.07
2024.89    0.177   334.44
2024.99    0.181   332.87
2025.09    0.185   331.38
2025.19    0.189   329.96
2025.29    0.193   328.59
2025.39    0.196   327.27
2025.49    0.200   326.00
2025.59    0.203   324.77
2025.69    0.206   323.57
2025.79    0.208   322.41
2025.89    0.210   321.27
2025.99    0.212   320.15
2026.09    0.213   319.05
2026.19    0.214   317.96
2026.29    0.214   316.87
2026.39    0.214   315.79
2026.49    0.213   314.69
2026.59    0.211   313.58
2026.69    0.208   312.44
2026.79    0.204   311.27
2026.89    0.200   310.05
2026.99    0.194   308.76
2027.09    0.187   307.39
2027.19    0.179   305.90
2027.29    0.170   304.27
2027.39    0.160   302.43
2027.49    0.148   300.32
2027.59    0.135   297.84
2027.69    0.122   294.81
2027.79    0.107   291.00
2027.89    0.093   286.00
2027.99    0.078   279.10
2028.09    0.064   269.12
2028.19    0.053   254.31
2028.29    0.046   233.48
2028.39    0.047   209.64
2028.49    0.054   189.35
2028.59    0.066   175.11
2028.69    0.080   165.56
2028.79    0.095   158.98
2028.89    0.111   154.23
2028.99    0.126   150.66
2029.09    0.142   147.87
2029.19    0.157   145.63
2029.29    0.172   143.78
2029.39    0.186   142.21
2029.49    0.200   140.87
2029.59    0.213   139.70
2029.69    0.226   138.66
2029.79    0.238   137.74
2029.89    0.250   136.90
2029.99    0.262   136.14
2030.09    0.273   135.44
2030.19    0.283   134.80
2030.29    0.293   134.20
2030.39    0.303   133.64
2030.49    0.312   133.11
2030.59    0.321   132.61
2030.69    0.329   132.14
2030.79    0.337   131.69
2030.89    0.345   131.26
2030.99    0.352   130.85
2031.09    0.359   130.46
2031.19    0.366   130.08
2031.29    0.372   129.72
2031.39    0.378   129.36
2031.49    0.384   129.02
2031.59    0.389   128.69
2031.69    0.395   128.36
2031.79    0.399   128.04
2031.89    0.404   127.74
2031.99    0.408   127.43
2032.09    0.412   127.14
2032.19    0.416   126.85
2032.29    0.420   126.56
2032.39    0.423   126.28
2032.49    0.426   126.00
2032.59    0.429   125.73
2032.69    0.431   125.46
2032.79    0.434   125.20
2032.89    0.436   124.93
2032.99    0.438   124.67
2033.09    0.440   124.41
2033.19    0.441   124.16
2033.29    0.443   123.90
2033.39    0.444   123.65
2033.49    0.445   123.40
2033.59    0.446   123.14
2033.69    0.447   122.89
2033.79    0.447   122.64
2033.89    0.447   122.40
2033.99    0.448   122.15
2034.09    0.448   121.90
2034.19    0.448   121.65
2034.29    0.447   121.40
2034.39    0.447   121.15
2034.49    0.446   120.90
2034.59    0.446   120.65
2034.69    0.445   120.40
2034.79    0.444   120.15
2034.89    0.443   119.89
2034.99    0.441   119.64
2035.09    0.440   119.38
2035.19    0.438   119.12

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 17:42:13