Double Star Calculator - Orbit

Orbital Elements for HOM1AA,AB

WDS:	HOM1AA,AB	WDS ID/Discoverer
P:	10.305	Orbital period (years)
a:	0.1525	Semi-major axis (arcseconds)
i:	82.3	Inclination (degrees)
Ω:	266.7	Longitude of ascending node (degrees)
T:	2002.315	Epoch of periastron passage (year)
e:	0.636	Eccentricity
ω:	216.0	Longitude of periastron (degrees)
Start-Year:	2019.8472547633291	Year
End-Year:	2030.1527452366709	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HOM1AA,AB
Position:	173839.66+611415.6	Epoch-2000 right ascension and declination
WDS-ID:	17387+6114	WDS designation
Discoverer Code:	HOM1AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	160934	HD catalog number
Hipparcos number:	86346	Hipparcos catalog number
V1:	10.2	Magnitude of the primary
V2:	11.4	Magnitude of the secondary
Equinox:		Equinox
Date:	2011	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:	EvT2012	Reference

Double Star Orbit for HOM1AA,AB

WDS 6th Orbit including measures of HOM1AA,AB

-- 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 HOM1AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.220   269.39
--------------------------
2019.85    0.117   279.14
2019.95    0.111   279.79
2020.05    0.105   280.51
2020.15    0.099   281.32
2020.25    0.093   282.23
2020.35    0.087   283.26
2020.45    0.081   284.46
2020.55    0.074   285.87
2020.65    0.068   287.54
2020.75    0.061   289.57
2020.85    0.055   292.08
2020.95    0.048   295.29
2021.05    0.042   299.50
2021.15    0.035   305.24
2021.25    0.029   313.36
2021.35    0.024   325.20
2021.45    0.021   342.18
2021.55    0.019     3.74
2021.65    0.021    25.15
2021.75    0.024    41.88
2021.85    0.030    53.54
2021.95    0.035    61.61
2022.05    0.041    67.40
2022.15    0.047    71.73
2022.25    0.052    75.14
2022.35    0.057    77.94
2022.45    0.061    80.35
2022.55    0.063    82.54
2022.65    0.063    84.66
2022.75    0.060    86.89
2022.85    0.053    89.52
2022.95    0.043    93.20
2023.05    0.029    99.84
2023.15    0.015   118.79
2023.25    0.010   198.46
2023.35    0.022   241.04
2023.45    0.037   251.28
2023.55    0.052   255.67
2023.65    0.065   258.16
2023.75    0.078   259.80
2023.85    0.090   260.99
2023.95    0.101   261.91
2024.05    0.112   262.65
2024.15    0.122   263.27
2024.25    0.131   263.80
2024.35    0.139   264.26
2024.45    0.147   264.67
2024.55    0.154   265.04
2024.65    0.161   265.38
2024.75    0.167   265.69
2024.85    0.173   265.98
2024.95    0.178   266.25
2025.05    0.183   266.51
2025.15    0.188   266.75
2025.25    0.192   266.98
2025.35    0.196   267.21
2025.45    0.200   267.42
2025.55    0.203   267.63
2025.65    0.206   267.83
2025.75    0.208   268.03
2025.85    0.211   268.22
2025.95    0.213   268.40
2026.05    0.215   268.59
2026.15    0.216   268.77
2026.25    0.217   268.95
2026.35    0.218   269.12
2026.45    0.219   269.30
2026.55    0.220   269.47
2026.65    0.220   269.65
2026.75    0.220   269.82
2026.85    0.220   269.99
2026.95    0.220   270.17
2027.05    0.219   270.34
2027.15    0.219   270.52
2027.25    0.218   270.69
2027.35    0.217   270.87
2027.45    0.215   271.05
2027.55    0.214   271.23
2027.65    0.212   271.42
2027.75    0.210   271.61
2027.85    0.208   271.80
2027.95    0.206   272.00
2028.05    0.204   272.20
2028.15    0.201   272.40
2028.25    0.198   272.61
2028.35    0.195   272.83
2028.45    0.192   273.05
2028.55    0.189   273.28
2028.65    0.186   273.52
2028.75    0.182   273.77
2028.85    0.179   274.03
2028.95    0.175   274.30
2029.05    0.171   274.58
2029.15    0.167   274.87
2029.25    0.162   275.19
2029.35    0.158   275.51
2029.45    0.153   275.86
2029.55    0.148   276.23
2029.65    0.144   276.62
2029.75    0.139   277.05
2029.85    0.133   277.50
2029.95    0.128   277.99
2030.05    0.123   278.53
2030.15    0.117   279.11

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 17:41:26