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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:27:45

Orbital Elements for HN28BA,BB

WDS:	HN28BA,BB	WDS ID/Discoverer
P:	0.846	Orbital period (years)
a:	0.1442	Semi-major axis (arcseconds)
i:	107.62	Inclination (degrees)
Ω:	16.03	Longitude of ascending node (degrees)
T:	2018.510	Epoch of periastron passage (year)
e:	0.76	Eccentricity
ω:	310.4	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 HN28BA,BB

Position:	145726.54-212441.4	Epoch-2000 right ascension and declination
WDS-ID:	14575-2125	WDS designation
Discoverer Code:	HN28BA,BB	Discover designation and components
ADS number:	9446	Aitken Double Star catalog
HD number:	131976	HD catalog number
Hipparcos number:	73182	Hipparcos catalog number
V1:	8.18	Magnitude of the primary
V2:	9.8	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HN28BA,BB

WDS 6th Orbit including measures of HN28BA,BB

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

Ephemeris of HN28BA,BB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.193    208.2
-------------------------

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.