Double Star Calculator - Orbit

Orbital Elements for HDS1556

WDS:	HDS1556	WDS ID/Discoverer
P:	14.950	Orbital period (years)
a:	0.1875	Semi-major axis (arcseconds)
i:	97.0	Inclination (degrees)
Ω:	109.3	Longitude of ascending node (degrees)
T:	2003.600	Epoch of periastron passage (year)
e:	0.553	Eccentricity
ω:	61.8	Longitude of periastron (degrees)
Start-Year:	2017.525	Year
End-Year:	2032.475	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1556
Position:	105256.71-171638.3	Epoch-2000 right ascension and declination
WDS-ID:	10529-1717	WDS designation
Discoverer Code:	HDS1556	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	94310	HD catalog number
Hipparcos number:	53206	Hipparcos catalog number
V1:	7.96	Magnitude of the primary
V2:	8.07	Magnitude of the secondary
Equinox:	2000	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:	Tok2017b	Reference

Double Star Orbit for HDS1556

WDS 6th Orbit including measures of HDS1556

-- 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 HDS1556

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.123   274.16
--------------------------
2017.53    0.113   111.57
2017.62    0.111   110.89
2017.72    0.108   110.17
2017.82    0.104   109.40
2017.92    0.099   108.56
2018.02    0.093   107.62
2018.12    0.085   106.54
2018.22    0.077   105.22
2018.32    0.067   103.54
2018.42    0.056   101.23
2018.52    0.044    97.71
2018.62    0.031    91.41
2018.72    0.019    76.78
2018.82    0.011    29.91
2018.92    0.016   331.31
2019.02    0.028   312.15
2019.12    0.041   304.66
2019.22    0.053   300.73
2019.32    0.066   298.28
2019.42    0.077   296.59
2019.52    0.088   295.33
2019.62    0.099   294.34
2019.72    0.108   293.54
2019.82    0.117   292.86
2019.92    0.126   292.28
2020.02    0.134   291.77
2020.12    0.141   291.32
2020.22    0.148   290.91
2020.32    0.155   290.54
2020.42    0.161   290.19
2020.52    0.166   289.87
2020.62    0.172   289.57
2020.72    0.176   289.29
2020.82    0.181   289.02
2020.92    0.185   288.76
2021.02    0.189   288.51
2021.12    0.192   288.28
2021.22    0.195   288.05
2021.32    0.198   287.82
2021.42    0.200   287.61
2021.52    0.203   287.40
2021.62    0.205   287.19
2021.72    0.207   286.99
2021.82    0.208   286.79
2021.92    0.209   286.59
2022.02    0.211   286.39
2022.12    0.211   286.20
2022.22    0.212   286.01
2022.32    0.213   285.82
2022.42    0.213   285.63
2022.52    0.213   285.44
2022.62    0.213   285.25
2022.72    0.213   285.06
2022.82    0.213   284.87
2022.92    0.212   284.68
2023.02    0.212   284.49
2023.12    0.211   284.30
2023.22    0.210   284.10
2023.32    0.209   283.91
2023.42    0.208   283.71
2023.52    0.206   283.51
2023.62    0.205   283.30
2023.72    0.203   283.10
2023.82    0.202   282.89
2023.92    0.200   282.68
2024.02    0.198   282.46
2024.12    0.196   282.24
2024.22    0.194   282.01
2024.32    0.192   281.78
2024.42    0.189   281.54
2024.52    0.187   281.30
2024.62    0.184   281.05
2024.72    0.182   280.79
2024.82    0.179   280.53
2024.92    0.176   280.26
2025.02    0.174   279.98
2025.12    0.171   279.69
2025.22    0.168   279.39
2025.32    0.165   279.08
2025.42    0.161   278.75
2025.52    0.158   278.42
2025.62    0.155   278.07
2025.72    0.152   277.70
2025.82    0.148   277.32
2025.92    0.145   276.92
2026.02    0.141   276.50
2026.12    0.138   276.05
2026.22    0.134   275.58
2026.32    0.130   275.09
2026.42    0.126   274.57
2026.52    0.123   274.01
2026.62    0.119   273.42
2026.72    0.115   272.79
2026.82    0.111   272.12
2026.92    0.107   271.39
2027.02    0.103   270.61
2027.12    0.099   269.76
2027.22    0.095   268.84
2027.32    0.091   267.84
2027.42    0.086   266.74
2027.52    0.082   265.53
2027.62    0.078   264.20
2027.72    0.074   262.72
2027.82    0.070   261.06
2027.92    0.066   259.20
2028.02    0.062   257.10
2028.12    0.058   254.70
2028.22    0.054   251.96
2028.32    0.050   248.80
2028.42    0.047   245.14
2028.52    0.043   240.87
2028.62    0.040   235.91
2028.72    0.037   230.14
2028.82    0.035   223.49
2028.92    0.033   215.95
2029.02    0.032   207.63
2029.12    0.031   198.79
2029.22    0.031   189.80
2029.32    0.032   181.08
2029.42    0.033   172.97
2029.52    0.035   165.69
2029.62    0.038   159.30
2029.72    0.041   153.78
2029.82    0.044   149.02
2029.92    0.048   144.94
2030.02    0.051   141.42
2030.12    0.055   138.37
2030.22    0.059   135.71
2030.32    0.063   133.38
2030.42    0.067   131.31
2030.52    0.070   129.48
2030.62    0.074   127.84
2030.72    0.078   126.36
2030.82    0.082   125.01
2030.92    0.086   123.78
2031.02    0.089   122.66
2031.12    0.093   121.61
2031.22    0.096   120.64
2031.32    0.099   119.74
2031.42    0.102   118.89
2031.52    0.105   118.08
2031.62    0.107   117.32
2031.72    0.109   116.58
2031.82    0.111   115.88
2031.92    0.113   115.19
2032.02    0.114   114.53
2032.12    0.115   113.87
2032.22    0.115   113.22
2032.32    0.115   112.57
2032.42    0.114   111.91

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 16:31:26