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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:33:46

Orbital Elements for RDR6BA,BB

WDS:	RDR6BA,BB	WDS ID/Discoverer
P:	6.570	Orbital period (years)
a:	0.189	Semi-major axis (arcseconds)
i:	70.4	Inclination (degrees)
Ω:	21.4	Longitude of ascending node (degrees)
T:	2020.090	Epoch of periastron passage (year)
e:	0.357	Eccentricity
ω:	230.0	Longitude of periastron (degrees)
Start-Year:	2022.0	Year
End-Year:	2028.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RDR6BA,BB

Position:	154402.15+023102.2	Epoch-2000 right ascension and declination
WDS-ID:	15440+0231	WDS designation
Discoverer Code:	RDR6BA,BB	Discover designation and components
ADS number:	9763	Aitken Double Star catalog
HD number:	140538	HD catalog number
Hipparcos number:	77052	Hipparcos catalog number
V1:	12.7	Magnitude of the primary
V2:	12.8	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for RDR6BA,BB

WDS 6th Orbit including measures of RDR6BA,BB

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

Ephemeris of RDR6BA,BB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.081    142.3
-------------------------
2022.0     0.223     24.2
2023.0     0.203     36.9
2024.0     0.123     60.6
2025.0     0.081    142.3
2026.0     0.139    194.0
2027.0     0.043    292.2

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.