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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:53:34

Orbital Elements for PLEIADESH156

WDS:	PLEIADESH156	WDS ID/Discoverer
P:	2.020	Orbital period (years)
a:	0.055	Semi-major axis (arcseconds)
i:	83.6	Inclination (degrees)
Ω:	84.6	Longitude of ascending node (degrees)
T:	1989.920	Epoch of periastron passage (year)
e:	0.456	Eccentricity
ω:	225.5	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 PLEIADESH156

Position:	034512.49+242802.1	Epoch-2000 right ascension and declination
WDS-ID:	03453+2428	WDS designation
Discoverer Code:	PLEIADESH156	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	23338	HD catalog number
Hipparcos number:	17531	Hipparcos catalog number
V1:	4.6	Magnitude of the primary
V2:	6.1	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1994	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for PLEIADESH156

WDS 6th Orbit including measures of PLEIADESH156

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

Ephemeris of PLEIADESH156

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.069     87.5
-------------------------
2024.0     0.028    256.1
2025.0     0.069     87.5

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.