Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:48:29

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:	2020.0	Year
End-Year:	2030.0	Year
Epoch:	2025.0	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' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HOM1AA,AB

WDS 6th Orbit including measures of HOM1AA,AB

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)

Ephemeris of HOM1AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.181    266.4
-------------------------
2020.0     0.108    280.2
2021.0     0.045    297.4
2022.0     0.038     64.9
2023.0     0.036     96.1
2024.0     0.107    262.3
2025.0     0.181    266.4
2026.0     0.214    268.5
2027.0     0.220    270.3
2028.0     0.205    272.1
2029.0     0.173    274.4

Disclaimer

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.