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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:21:56

Orbital Elements for RAO16

WDS:	RAO16	WDS ID/Discoverer
P:	8.360	Orbital period (years)
a:	0.104	Semi-major axis (arcseconds)
i:	114.4	Inclination (degrees)
Ω:	114.0	Longitude of ascending node (degrees)
T:	2018.880	Epoch of periastron passage (year)
e:	0.98	Eccentricity
ω:	66.0	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 RAO16

Position:	140926.53+101436.8	Epoch-2000 right ascension and declination
WDS-ID:	14094+1015	WDS designation
Discoverer Code:	RAO16	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	8.02	Magnitude of the primary
V2:	9.	Magnitude of the secondary
Equinox:		Equinox
Date:	2018	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for RAO16

WDS 6th Orbit including measures of RAO16

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

Ephemeris of RAO16

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.090    244.3
-------------------------
2021.0     0.105    257.4
2022.0     0.114    254.2
2023.0     0.115    251.3
2024.0     0.107    248.2
2025.0     0.090    244.3
2026.0     0.064    237.9
2027.0     0.021    212.2
2028.0     0.069    264.1

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.