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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:42:14

Orbital Elements for HU298

WDS:	HU298	WDS ID/Discoverer
P:	30.730	Orbital period (years)
a:	0.173	Semi-major axis (arcseconds)
i:	31.0	Inclination (degrees)
Ω:	126.8	Longitude of ascending node (degrees)
T:	1987.470	Epoch of periastron passage (year)
e:	0.263	Eccentricity
ω:	57.0	Longitude of periastron (degrees)
Start-Year:	2010.0	Year
End-Year:	2040.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU298

Position:	233212.71+070506.1	Epoch-2000 right ascension and declination
WDS-ID:	23322+0705	WDS designation
Discoverer Code:	HU298	Discover designation and components
ADS number:	16819	Aitken Double Star catalog
HD number:	221445	HD catalog number
Hipparcos number:	116164	Hipparcos catalog number
V1:	7.46	Magnitude of the primary
V2:	7.92	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1997	Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HU298

WDS 6th Orbit including measures of HU298

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

Ephemeris of HU298

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.175    295.4
-------------------------
2010.0     0.166     63.3
2011.0     0.163     74.0
2012.0     0.159     85.2
2013.0     0.155     97.0
2014.0     0.150    109.5
2015.0     0.143    123.0
2016.0     0.134    138.0
2017.0     0.125    155.3
2018.0     0.116    175.3
2019.0     0.112    197.8
2020.0     0.114    220.8
2021.0     0.123    241.7
2022.0     0.136    259.2
2023.0     0.150    273.4
2024.0     0.163    285.3
2025.0     0.175    295.4
2026.0     0.185    304.3
2027.0     0.193    312.3
2028.0     0.198    319.9
2029.0     0.202    327.1
2030.0     0.203    334.2
2031.0     0.203    341.2
2032.0     0.202    348.3
2033.0     0.199    355.5
2034.0     0.195      2.9
2035.0     0.191     10.7
2036.0     0.187     18.8
2037.0     0.182     27.3
2038.0     0.177     36.3
2039.0     0.173     45.8

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.