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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:35:48

Orbital Elements for HO295AB

WDS:	HO295AB	WDS ID/Discoverer
P:	30.127	Orbital period (years)
a:	0.3361	Semi-major axis (arcseconds)
i:	88.28	Inclination (degrees)
Ω:	154.25	Longitude of ascending node (degrees)
T:	2010.179	Epoch of periastron passage (year)
e:	0.324	Eccentricity
ω:	84.92	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 HO295AB

Position:	223847.47+441849.9	Epoch-2000 right ascension and declination
WDS-ID:	22388+4419	WDS designation
Discoverer Code:	HO295AB	Discover designation and components
ADS number:	16138	Aitken Double Star catalog
HD number:	214608	HD catalog number
Hipparcos number:	111805	Hipparcos catalog number
V1:	7.48	Magnitude of the primary
V2:	7.98	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HO295AB

WDS 6th Orbit including measures of HO295AB

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

Ephemeris of HO295AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.053    348.7
-------------------------
2010.0     0.038    164.4
2011.0     0.060    327.9
2012.0     0.150    332.0
2013.0     0.223    333.2
2014.0     0.276    333.8
2015.0     0.309    334.2
2016.0     0.325    334.6
2017.0     0.327    335.0
2018.0     0.316    335.3
2019.0     0.296    335.8
2020.0     0.267    336.2
2021.0     0.232    336.8
2022.0     0.192    337.7
2023.0     0.148    339.0
2024.0     0.101    341.6
2025.0     0.053    348.7
2026.0     0.013     58.0
2027.0     0.050    139.1
2028.0     0.098    146.8
2029.0     0.145    149.5
2030.0     0.189    150.9
2031.0     0.229    151.8
2032.0     0.262    152.4
2033.0     0.288    152.9
2034.0     0.304    153.4
2035.0     0.308    153.8
2036.0     0.296    154.2
2037.0     0.266    154.7
2038.0     0.214    155.3
2039.0     0.141    156.6

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.