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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:50:44

Orbital Elements for HEI449

WDS:	HEI449	WDS ID/Discoverer
P:	32.410	Orbital period (years)
a:	0.165	Semi-major axis (arcseconds)
i:	114.6	Inclination (degrees)
Ω:	55.6	Longitude of ascending node (degrees)
T:	2001.350	Epoch of periastron passage (year)
e:	0.806	Eccentricity
ω:	180.4	Longitude of periastron (degrees)
Start-Year:	2009.0	Year
End-Year:	2041.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HEI449

Position:	032118.10+103747.4	Epoch-2000 right ascension and declination
WDS-ID:	03213+1038	WDS designation
Discoverer Code:	HEI449	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	20779	HD catalog number
Hipparcos number:	15633	Hipparcos catalog number
V1:	9.19	Magnitude of the primary
V2:	9.43	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HEI449

WDS 6th Orbit including measures of HEI449

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

Ephemeris of HEI449

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.244     48.3
-------------------------
2009.0     0.227     64.0
2010.0     0.244     62.7
2011.0     0.258     61.5
2012.0     0.269     60.4
2013.0     0.279     59.4
2014.0     0.286     58.5
2015.0     0.292     57.6
2016.0     0.296     56.7
2017.0     0.298     55.9
2018.0     0.298     55.1
2019.0     0.296     54.2
2020.0     0.292     53.4
2021.0     0.287     52.5
2022.0     0.279     51.5
2023.0     0.270     50.6
2024.0     0.258     49.5
2025.0     0.244     48.3
2026.0     0.228     47.0
2027.0     0.209     45.4
2028.0     0.187     43.5
2029.0     0.162     41.1
2030.0     0.133     37.6
2031.0     0.099     32.0
2032.0     0.059     19.4
2033.0     0.023    318.5
2034.0     0.029    216.7
2035.0     0.038    107.7
2036.0     0.080     83.5
2037.0     0.117     75.6
2038.0     0.148     71.3
2039.0     0.176     68.5
2040.0     0.199     66.3

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.