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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:37:22

Orbital Elements for HDS3250AA,AB

WDS:	HDS3250AA,AB	WDS ID/Discoverer
P:	13.030	Orbital period (years)
a:	0.125	Semi-major axis (arcseconds)
i:	41.0	Inclination (degrees)
Ω:	220.2	Longitude of ascending node (degrees)
T:	2012.140	Epoch of periastron passage (year)
e:	0.084	Eccentricity
ω:	150.1	Longitude of periastron (degrees)
Start-Year:	2019.0	Year
End-Year:	2031.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS3250AA,AB

Position:	225311.69-375020.4	Epoch-2000 right ascension and declination
WDS-ID:	22532-3750	WDS designation
Discoverer Code:	HDS3250AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	216405	HD catalog number
Hipparcos number:	113010	Hipparcos catalog number
V1:	9.53	Magnitude of the primary
V2:	13.59	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS3250AA,AB

WDS 6th Orbit including measures of HDS3250AA,AB

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

Ephemeris of HDS3250AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.106     11.9
-------------------------
2019.0     0.131    203.4
2020.0     0.134    221.6
2021.0     0.124    240.9
2022.0     0.107    265.1
2023.0     0.092    298.9
2024.0     0.092    338.5
2025.0     0.106     11.9
2026.0     0.115     38.1
2027.0     0.113     62.6
2028.0     0.103     90.4
2029.0     0.097    123.4
2030.0     0.104    156.0

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.