Double Star Calculator - Orbit

Orbital Elements for HU874

WDS:	HU874	WDS ID/Discoverer
P:	17.974	Orbital period (years)
a:	0.1528	Semi-major axis (arcseconds)
i:	82.4	Inclination (degrees)
Ω:	111.6	Longitude of ascending node (degrees)
T:	2003.810	Epoch of periastron passage (year)
e:	0.928	Eccentricity
ω:	317.9	Longitude of periastron (degrees)
Start-Year:	2016.013	Year
End-Year:	2033.987	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU874
Position:	101138.19+132118.7	Epoch-2000 right ascension and declination
WDS-ID:	10116+1321	WDS designation
Discoverer Code:	HU874	Discover designation and components
ADS number:	7674	Aitken Double Star catalog
HD number:	88355	HD catalog number
Hipparcos number:	49929	Hipparcos catalog number
V1:	6.90	Magnitude of the primary
V2:	7.87	Magnitude of the secondary
Equinox:		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:	Tok2020e	Reference

Double Star Orbit for HU874

WDS 6th Orbit including measures of HU874

-- 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 HU874

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.157   282.11
--------------------------
2016.01    0.221   286.26
2016.11    0.221   286.31
2016.21    0.220   286.35
2016.31    0.219   286.40
2016.41    0.218   286.45
2016.51    0.217   286.50
2016.61    0.216   286.55
2016.71    0.215   286.60
2016.81    0.214   286.65
2016.91    0.213   286.70
2017.01    0.212   286.75
2017.11    0.211   286.80
2017.21    0.210   286.85
2017.31    0.208   286.90
2017.41    0.207   286.96
2017.51    0.205   287.01
2017.61    0.204   287.07
2017.71    0.202   287.12
2017.81    0.201   287.18
2017.91    0.199   287.24
2018.01    0.197   287.30
2018.11    0.195   287.36
2018.21    0.193   287.42
2018.31    0.191   287.48
2018.41    0.189   287.54
2018.51    0.187   287.61
2018.61    0.184   287.68
2018.71    0.182   287.74
2018.81    0.180   287.82
2018.91    0.177   287.89
2019.01    0.174   287.96
2019.11    0.172   288.04
2019.21    0.169   288.12
2019.31    0.166   288.20
2019.41    0.163   288.29
2019.51    0.159   288.38
2019.61    0.156   288.47
2019.71    0.152   288.57
2019.81    0.149   288.67
2019.91    0.145   288.77
2020.01    0.141   288.89
2020.11    0.137   289.01
2020.21    0.132   289.13
2020.31    0.128   289.27
2020.41    0.123   289.42
2020.51    0.118   289.58
2020.61    0.112   289.75
2020.71    0.107   289.94
2020.81    0.101   290.16
2020.91    0.094   290.40
2021.01    0.087   290.68
2021.11    0.080   291.02
2021.21    0.071   291.42
2021.31    0.062   291.94
2021.41    0.052   292.64
2021.51    0.040   293.73
2021.61    0.026   295.86
2021.71    0.008   306.41
2021.81    0.012   111.15
2021.91    0.014   122.92
2022.01    0.010   138.57
2022.11    0.008   168.61
2022.21    0.008   210.94
2022.31    0.011   238.35
2022.41    0.016   251.75
2022.51    0.020   259.04
2022.61    0.025   263.55
2022.71    0.030   266.61
2022.81    0.035   268.83
2022.91    0.039   270.53
2023.01    0.044   271.87
2023.11    0.048   272.96
2023.21    0.053   273.87
2023.31    0.057   274.64
2023.41    0.061   275.30
2023.51    0.065   275.88
2023.61    0.069   276.40
2023.71    0.073   276.85
2023.81    0.077   277.27
2023.91    0.081   277.64
2024.01    0.084   277.98
2024.11    0.088   278.29
2024.21    0.091   278.57
2024.31    0.095   278.84
2024.41    0.098   279.09
2024.51    0.102   279.32
2024.61    0.105   279.53
2024.71    0.108   279.73
2024.81    0.111   279.93
2024.91    0.115   280.11
2025.01    0.118   280.28
2025.11    0.121   280.44
2025.21    0.124   280.59
2025.31    0.126   280.74
2025.41    0.129   280.88
2025.51    0.132   281.02
2025.61    0.135   281.15
2025.71    0.138   281.27
2025.81    0.140   281.39
2025.91    0.143   281.51
2026.01    0.145   281.62
2026.11    0.148   281.72
2026.21    0.150   281.83
2026.31    0.153   281.93
2026.41    0.155   282.02
2026.51    0.157   282.12
2026.61    0.160   282.21
2026.71    0.162   282.30
2026.81    0.164   282.39
2026.91    0.166   282.47
2027.01    0.168   282.55
2027.11    0.171   282.63
2027.21    0.173   282.71
2027.31    0.175   282.79
2027.41    0.177   282.86
2027.51    0.178   282.94
2027.61    0.180   283.01
2027.71    0.182   283.08
2027.81    0.184   283.15
2027.91    0.186   283.21
2028.01    0.187   283.28
2028.11    0.189   283.34
2028.21    0.191   283.41
2028.31    0.192   283.47
2028.41    0.194   283.53
2028.51    0.195   283.59
2028.61    0.197   283.65
2028.71    0.198   283.71
2028.81    0.200   283.77
2028.91    0.201   283.83
2029.01    0.203   283.88
2029.11    0.204   283.94
2029.21    0.205   284.00
2029.31    0.206   284.05
2029.41    0.208   284.10
2029.51    0.209   284.16
2029.61    0.210   284.21
2029.71    0.211   284.26
2029.81    0.212   284.31
2029.91    0.213   284.36
2030.01    0.214   284.42
2030.11    0.215   284.47
2030.21    0.216   284.51
2030.31    0.217   284.56
2030.41    0.217   284.61
2030.51    0.218   284.66
2030.61    0.219   284.71
2030.71    0.220   284.76
2030.81    0.220   284.81
2030.91    0.221   284.85
2031.01    0.222   284.90
2031.11    0.222   284.95
2031.21    0.223   284.99
2031.31    0.223   285.04
2031.41    0.224   285.09
2031.51    0.224   285.13
2031.61    0.224   285.18
2031.71    0.225   285.22
2031.81    0.225   285.27
2031.91    0.225   285.31
2032.01    0.226   285.36
2032.11    0.226   285.40
2032.21    0.226   285.45
2032.31    0.226   285.49
2032.41    0.226   285.54
2032.51    0.226   285.58
2032.61    0.226   285.63
2032.71    0.226   285.67
2032.81    0.226   285.72
2032.91    0.226   285.77
2033.01    0.226   285.81
2033.11    0.225   285.86
2033.21    0.225   285.90
2033.31    0.225   285.95
2033.41    0.224   285.99
2033.51    0.224   286.04
2033.61    0.223   286.08
2033.71    0.223   286.13
2033.81    0.222   286.18
2033.91    0.222   286.22

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 16:25:06