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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:34:16

Orbital Elements for HDS2226

WDS:	HDS2226	WDS ID/Discoverer
P:	31.100	Orbital period (years)
a:	0.106	Semi-major axis (arcseconds)
i:	140.8	Inclination (degrees)
Ω:	57.7	Longitude of ascending node (degrees)
T:	2010.380	Epoch of periastron passage (year)
e:	0.499	Eccentricity
ω:	204.7	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 HDS2226

Position:	154803.31-251256.0	Epoch-2000 right ascension and declination
WDS-ID:	15481-2513	WDS designation
Discoverer Code:	HDS2226	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	141091	HD catalog number
Hipparcos number:	77399	Hipparcos catalog number
V1:	7.60	Magnitude of the primary
V2:	8.49	Magnitude of the secondary
Equinox:		Equinox
Date:	2018	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS2226

WDS 6th Orbit including measures of HDS2226

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

Ephemeris of HDS2226

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.155     41.5
-------------------------
2010.0     0.053    230.2
2011.0     0.048    196.0
2012.0     0.049    157.6
2013.0     0.059    126.7
2014.0     0.074    106.6
2015.0     0.089     93.3
2016.0     0.103     83.8
2017.0     0.115     76.5
2018.0     0.126     70.4
2019.0     0.134     65.3
2020.0     0.142     60.7
2021.0     0.147     56.5
2022.0     0.151     52.6
2023.0     0.154     48.8
2024.0     0.155     45.2
2025.0     0.155     41.5
2026.0     0.153     37.8
2027.0     0.150     34.0
2028.0     0.147     30.1
2029.0     0.142     25.9
2030.0     0.136     21.4
2031.0     0.129     16.4
2032.0     0.121     10.8
2033.0     0.112      4.4
2034.0     0.103    356.8
2035.0     0.094    347.8
2036.0     0.084    336.6
2037.0     0.075    322.8
2038.0     0.068    305.6
2039.0     0.062    284.8

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.