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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:04:55

Orbital Elements for HDS633

WDS:	HDS633	WDS ID/Discoverer
P:	11.834	Orbital period (years)
a:	0.1429	Semi-major axis (arcseconds)
i:	56.0	Inclination (degrees)
Ω:	167.6	Longitude of ascending node (degrees)
T:	2018.190	Epoch of periastron passage (year)
e:	0.913	Eccentricity
ω:	157.9	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 HDS633

Position:	045355.55-203220.1	Epoch-2000 right ascension and declination
WDS-ID:	04539-2032	WDS designation
Discoverer Code:	HDS633	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	22772	Hipparcos catalog number
V1:	10.78	Magnitude of the primary
V2:	11.15	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS633

WDS 6th Orbit including measures of HDS633

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

Ephemeris of HDS633

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.259    156.7
-------------------------
2020.0     0.150    142.0
2021.0     0.196    146.8
2022.0     0.228    149.9
2023.0     0.249    152.4
2024.0     0.259    154.6
2025.0     0.259    156.7
2026.0     0.249    158.9
2027.0     0.226    161.4
2028.0     0.188    164.6
2029.0     0.127    170.4

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.