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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:43:56

Orbital Elements for HR774

WDS:	HR774	WDS ID/Discoverer
P:	5.525	Orbital period (years)
a:	0.008119999999999999	Semi-major axis (arcseconds)
i:	85.0	Inclination (degrees)
Ω:	279.0	Longitude of ascending node (degrees)
T:	1985.761	Epoch of periastron passage (year)
e:	0.09	Eccentricity
ω:	120.0	Longitude of periastron (degrees)
Start-Year:	2023.0	Year
End-Year:	2027.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HR774

Position:	024747.63+812655.2	Epoch-2000 right ascension and declination
WDS-ID:	02478+8127	WDS designation
Discoverer Code:	HR774	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	16458	HD catalog number
Hipparcos number:	13055	Hipparcos catalog number
V1:	5.79	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1992	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HR774

WDS 6th Orbit including measures of HR774

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

Ephemeris of HR774

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.007     97.5
-------------------------
2023.0     0.008    280.5
2024.0     0.001    330.8
2025.0     0.007     97.5
2026.0     0.005    105.3

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.