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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:29:29

Orbital Elements for HDS950

WDS:	HDS950	WDS ID/Discoverer
P:	29.130	Orbital period (years)
a:	0.127	Semi-major axis (arcseconds)
i:	98.9	Inclination (degrees)
Ω:	165.3	Longitude of ascending node (degrees)
T:	2017.086	Epoch of periastron passage (year)
e:	0.444	Eccentricity
ω:	278.1	Longitude of periastron (degrees)
Start-Year:	2011.0	Year
End-Year:	2039.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS950

Position:	065059.53+055032.6	Epoch-2000 right ascension and declination
WDS-ID:	06510+0551	WDS designation
Discoverer Code:	HDS950	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	49932	HD catalog number
Hipparcos number:	32872	Hipparcos catalog number
V1:	7.73	Magnitude of the primary
V2:	7.94	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS950

WDS 6th Orbit including measures of HDS950

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

Ephemeris of HDS950

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.083    151.1
-------------------------
2011.0     0.122    349.8
2012.0     0.120    348.0
2013.0     0.112    345.9
2014.0     0.097    343.4
2015.0     0.072    339.6
2016.0     0.038    329.8
2017.0     0.013    225.7
2018.0     0.048    175.8
2019.0     0.078    168.7
2020.0     0.097    165.1
2021.0     0.105    162.5
2022.0     0.106    160.0
2023.0     0.102    157.5
2024.0     0.094    154.6
2025.0     0.083    151.1
2026.0     0.071    146.4
2027.0     0.058    139.7
2028.0     0.045    129.0
2029.0     0.034    110.4
2030.0     0.028     80.0
2031.0     0.032     47.6
2032.0     0.042     26.7
2033.0     0.055     14.8
2034.0     0.069      7.5
2035.0     0.082      2.6
2036.0     0.094    359.1
2037.0     0.105    356.3
2038.0     0.114    354.0

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.