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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:17:23

Orbital Elements for BD+134571

WDS:	BD+134571	WDS ID/Discoverer
P:	3.546	Orbital period (years)
a:	0.028399999999999998	Semi-major axis (arcseconds)
i:	89.0	Inclination (degrees)
Ω:	338.0	Longitude of ascending node (degrees)
T:	1993.682	Epoch of periastron passage (year)
e:	0.23	Eccentricity
ω:	124.0	Longitude of periastron (degrees)
Start-Year:	2024.0	Year
End-Year:	2026.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BD+134571

Position:	205531.91+140834.0	Epoch-2000 right ascension and declination
WDS-ID:	20555+1409	WDS designation
Discoverer Code:	BD+134571	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	103287	Hipparcos catalog number
V1:	9.13	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1991	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for BD+134571

WDS 6th Orbit including measures of BD+134571

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

Ephemeris of BD+134571

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.021    338.8
-------------------------
2024.0     0.025    337.0
2025.0     0.021    338.8

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.