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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:41:43

Orbital Elements for 19DRA

WDS:	19DRA	WDS ID/Discoverer
P:	0.143	Orbital period (years)
a:	0.02	Semi-major axis (arcseconds)
i:	90.5	Inclination (degrees)
Ω:	23.5	Longitude of ascending node (degrees)
T:	2005.156	Epoch of periastron passage (year)
e:	0.2221	Eccentricity
ω:	338.46	Longitude of periastron (degrees)
Start-Year:	2025.0	Year
End-Year:	2025.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for 19DRA

Position:	165601.36+650804.8	Epoch-2000 right ascension and declination
WDS-ID:	16560+6508	WDS designation
Discoverer Code:	19DRA	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	153597	HD catalog number
Hipparcos number:	82860	Hipparcos catalog number
V1:	4.89	Magnitude of the primary
V2:	9.9	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for 19DRA

WDS 6th Orbit including measures of 19DRA

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

Ephemeris of 19DRA

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.015     23.2
-------------------------

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.