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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:31:46

Orbital Elements for HDS3145

WDS:	HDS3145	WDS ID/Discoverer
P:	10.641	Orbital period (years)
a:	0.0951	Semi-major axis (arcseconds)
i:	149.4	Inclination (degrees)
Ω:	62.0	Longitude of ascending node (degrees)
T:	1997.760	Epoch of periastron passage (year)
e:	0.516	Eccentricity
ω:	301.9	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 HDS3145

Position:	220818.81+240925.1	Epoch-2000 right ascension and declination
WDS-ID:	22083+2409	WDS designation
Discoverer Code:	HDS3145	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	210211	HD catalog number
Hipparcos number:	109281	Hipparcos catalog number
V1:	7.29	Magnitude of the primary
V2:	7.67	Magnitude of the secondary
Equinox:		Equinox
Date:	2018	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS3145

WDS 6th Orbit including measures of HDS3145

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

Ephemeris of HDS3145

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.131    287.7
-------------------------
2020.0     0.066     35.6
2021.0     0.088    357.5
2022.0     0.106    333.4
2023.0     0.119    315.7
2024.0     0.128    301.0
2025.0     0.131    287.7
2026.0     0.128    274.4
2027.0     0.116    259.4
2028.0     0.092    238.6
2029.0     0.055    194.7

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.