Double Star Calculator - Orbit

Orbital Elements for HDS1256

WDS:	HDS1256	WDS ID/Discoverer
P:	12.695	Orbital period (years)
a:	0.2902	Semi-major axis (arcseconds)
i:	146.9	Inclination (degrees)
Ω:	140.5	Longitude of ascending node (degrees)
T:	2011.750	Epoch of periastron passage (year)
e:	0.536	Eccentricity
ω:	60.3	Longitude of periastron (degrees)
Start-Year:	2018.6525	Year
End-Year:	2031.3475	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1256
Position:	084423.00-442822.0	Epoch-2000 right ascension and declination
WDS-ID:	08444-4428	WDS designation
Discoverer Code:	HDS1256	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	42881	Hipparcos catalog number
V1:	11.08	Magnitude of the primary
V2:	11.98	Magnitude of the secondary
Equinox:		Equinox
Date:	2018	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:	Tok2019c	Reference

Double Star Orbit for HDS1256

WDS 6th Orbit including measures of HDS1256

-- 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 HDS1256

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.287   318.95
--------------------------
2018.65    0.384   258.54
2018.75    0.382   257.39
2018.85    0.380   256.23
2018.95    0.378   255.06
2019.05    0.376   253.87
2019.15    0.374   252.67
2019.25    0.371   251.45
2019.35    0.369   250.22
2019.45    0.366   248.97
2019.55    0.364   247.71
2019.65    0.361   246.42
2019.75    0.358   245.11
2019.85    0.355   243.79
2019.95    0.352   242.44
2020.05    0.349   241.06
2020.15    0.346   239.66
2020.25    0.342   238.23
2020.35    0.339   236.78
2020.45    0.336   235.30
2020.55    0.332   233.78
2020.65    0.328   232.23
2020.75    0.325   230.64
2020.85    0.321   229.02
2020.95    0.317   227.36
2021.05    0.313   225.66
2021.15    0.309   223.91
2021.25    0.305   222.11
2021.35    0.300   220.27
2021.45    0.296   218.37
2021.55    0.292   216.42
2021.65    0.287   214.40
2021.75    0.283   212.33
2021.85    0.278   210.18
2021.95    0.274   207.96
2022.05    0.269   205.67
2022.15    0.264   203.29
2022.25    0.259   200.83
2022.35    0.254   198.26
2022.45    0.249   195.60
2022.55    0.244   192.82
2022.65    0.239   189.92
2022.75    0.233   186.89
2022.85    0.228   183.71
2022.95    0.222   180.37
2023.05    0.216   176.85
2023.15    0.210   173.14
2023.25    0.204   169.20
2023.35    0.198   165.01
2023.45    0.191   160.53
2023.55    0.184   155.72
2023.65    0.177   150.52
2023.75    0.169   144.86
2023.85    0.161   138.66
2023.95    0.153   131.81
2024.05    0.145   124.20
2024.15    0.137   115.68
2024.25    0.129   106.13
2024.35    0.123    95.49
2024.45    0.118    83.85
2024.55    0.116    71.48
2024.65    0.116    58.89
2024.75    0.120    46.70
2024.85    0.125    35.40
2024.95    0.133    25.28
2025.05    0.143    16.40
2025.15    0.153     8.69
2025.25    0.164     1.98
2025.35    0.176   356.13
2025.45    0.187   350.99
2025.55    0.198   346.43
2025.65    0.209   342.35
2025.75    0.220   338.67
2025.85    0.230   335.33
2025.95    0.240   332.27
2026.05    0.249   329.45
2026.15    0.259   326.83
2026.25    0.267   324.39
2026.35    0.276   322.10
2026.45    0.284   319.94
2026.55    0.291   317.89
2026.65    0.299   315.95
2026.75    0.306   314.10
2026.85    0.312   312.33
2026.95    0.319   310.63
2027.05    0.324   309.00
2027.15    0.330   307.42
2027.25    0.336   305.90
2027.35    0.341   304.42
2027.45    0.346   302.99
2027.55    0.350   301.59
2027.65    0.354   300.23
2027.75    0.359   298.90
2027.85    0.362   297.60
2027.95    0.366   296.33
2028.05    0.369   295.08
2028.15    0.372   293.85
2028.25    0.375   292.65
2028.35    0.378   291.46
2028.45    0.381   290.28
2028.55    0.383   289.13
2028.65    0.385   287.98
2028.75    0.387   286.85
2028.85    0.389   285.73
2028.95    0.391   284.61
2029.05    0.392   283.51
2029.15    0.393   282.42
2029.25    0.394   281.33
2029.35    0.395   280.24
2029.45    0.396   279.16
2029.55    0.397   278.09
2029.65    0.397   277.02
2029.75    0.397   275.95
2029.85    0.398   274.88
2029.95    0.398   273.81
2030.05    0.397   272.74
2030.15    0.397   271.67
2030.25    0.397   270.60
2030.35    0.396   269.52
2030.45    0.396   268.45
2030.55    0.395   267.37
2030.65    0.394   266.28
2030.75    0.393   265.19
2030.85    0.392   264.09
2030.95    0.390   262.99
2031.05    0.389   261.87
2031.15    0.387   260.75
2031.25    0.386   259.62

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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 16:10:10