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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:11:43

Orbital Elements for WRH33AA,AB

WDS:	WRH33AA,AB	WDS ID/Discoverer
P:	10.040	Orbital period (years)
a:	0.043	Semi-major axis (arcseconds)
i:	104.7	Inclination (degrees)
Ω:	144.9	Longitude of ascending node (degrees)
T:	1963.012	Epoch of periastron passage (year)
e:	0.118	Eccentricity
ω:	129.8	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 WRH33AA,AB

Position:	201337.90+464428.8	Epoch-2000 right ascension and declination
WDS-ID:	20136+4644	WDS designation
Discoverer Code:	WRH33AA,AB	Discover designation and components
ADS number:	13554	Aitken Double Star catalog
HD number:	192577	HD catalog number
Hipparcos number:	99675	Hipparcos catalog number
V1:	3.93	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1985	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for WRH33AA,AB

WDS 6th Orbit including measures of WRH33AA,AB

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

Ephemeris of WRH33AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.038    318.1
-------------------------
2020.0     0.046    144.4
2021.0     0.035    134.6
2022.0     0.014    102.8
2023.0     0.020    350.2
2024.0     0.037    329.2
2025.0     0.038    318.1
2026.0     0.023    300.0
2027.0     0.012    223.6
2028.0     0.027    167.0
2029.0     0.042    153.0

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.