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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:21:32

Orbital Elements for HO212AB

WDS:	HO212AB	WDS ID/Discoverer
P:	6.897	Orbital period (years)
a:	0.23426	Semi-major axis (arcseconds)
i:	47.89	Inclination (degrees)
Ω:	328.34	Longitude of ascending node (degrees)
T:	1890.613	Epoch of periastron passage (year)
e:	0.7616	Eccentricity
ω:	104.73	Longitude of periastron (degrees)
Start-Year:	2022.0	Year
End-Year:	2028.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HO212AB

Position:	003514.86-033534.2	Epoch-2000 right ascension and declination
WDS-ID:	00352-0336	WDS designation
Discoverer Code:	HO212AB	Discover designation and components
ADS number:	490	Aitken Double Star catalog
HD number:	3196	HD catalog number
Hipparcos number:	2762	Hipparcos catalog number
V1:	5.61	Magnitude of the primary
V2:	6.90	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HO212AB

WDS 6th Orbit including measures of HO212AB

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

Ephemeris of HO212AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.286    258.0
-------------------------
2022.0     0.115    169.8
2023.0     0.206    218.1
2024.0     0.257    241.3
2025.0     0.286    258.0
2026.0     0.291    272.8
2027.0     0.263    288.6

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.