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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:34:12

Orbital Elements for HDS2222

WDS:	HDS2222	WDS ID/Discoverer
P:	31.926	Orbital period (years)
a:	0.0848	Semi-major axis (arcseconds)
i:	57.9	Inclination (degrees)
Ω:	65.5	Longitude of ascending node (degrees)
T:	2011.375	Epoch of periastron passage (year)
e:	0.488	Eccentricity
ω:	54.2	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 HDS2222

Position:	154702.15+414311.0	Epoch-2000 right ascension and declination
WDS-ID:	15470+4143	WDS designation
Discoverer Code:	HDS2222	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	141347	HD catalog number
Hipparcos number:	77312	Hipparcos catalog number
V1:	8.76	Magnitude of the primary
V2:	9.34	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2012	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS2222

WDS 6th Orbit including measures of HDS2222

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

Ephemeris of HDS2222

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.101    272.4
-------------------------
2010.0     0.048     68.9
2011.0     0.037     89.7
2012.0     0.025    132.4
2013.0     0.030    188.7
2014.0     0.046    215.8
2015.0     0.062    228.8
2016.0     0.075    236.8
2017.0     0.086    242.6
2018.0     0.093    247.3
2019.0     0.099    251.4
2020.0     0.103    255.1
2021.0     0.105    258.6
2022.0     0.105    262.0
2023.0     0.105    265.3
2024.0     0.103    268.8
2025.0     0.101    272.4
2026.0     0.097    276.3
2027.0     0.093    280.4
2028.0     0.089    284.9
2029.0     0.083    290.0
2030.0     0.078    295.8
2031.0     0.073    302.4
2032.0     0.067    310.1
2033.0     0.063    319.0
2034.0     0.059    329.3
2035.0     0.056    340.9
2036.0     0.054    353.4
2037.0     0.054      6.4
2038.0     0.055     19.3
2039.0     0.056     31.7

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.