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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:04:32

Orbital Elements for HDS2724

WDS:	HDS2724	WDS ID/Discoverer
P:	8.145	Orbital period (years)
a:	0.148	Semi-major axis (arcseconds)
i:	113.7	Inclination (degrees)
Ω:	268.8	Longitude of ascending node (degrees)
T:	2019.649	Epoch of periastron passage (year)
e:	0.527	Eccentricity
ω:	133.1	Longitude of periastron (degrees)
Start-Year:	2021.0	Year
End-Year:	2029.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2724

Position:	191518.83+245349.4	Epoch-2000 right ascension and declination
WDS-ID:	19153+2454	WDS designation
Discoverer Code:	HDS2724	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	338030	HD catalog number
Hipparcos number:	94622	Hipparcos catalog number
V1:	10.36	Magnitude of the primary
V2:	10.82	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS2724

WDS 6th Orbit including measures of HDS2724

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

Ephemeris of HDS2724

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.193    279.5
-------------------------
2021.0     0.069     32.8
2022.0     0.088    329.8
2023.0     0.137    302.3
2024.0     0.177    289.0
2025.0     0.193    279.5
2026.0     0.172    270.0
2027.0     0.091    250.7
2028.0     0.072     94.4

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.