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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:54:09

Orbital Elements for RST5099

WDS:	RST5099	WDS ID/Discoverer
P:	45.640	Orbital period (years)
a:	0.259	Semi-major axis (arcseconds)
i:	68.2	Inclination (degrees)
Ω:	114.4	Longitude of ascending node (degrees)
T:	2009.100	Epoch of periastron passage (year)
e:	0.513	Eccentricity
ω:	107.1	Longitude of periastron (degrees)
Start-Year:	2003.0	Year
End-Year:	2047.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST5099

Position:	180426.16-595231.6	Epoch-2000 right ascension and declination
WDS-ID:	18044-5953	WDS designation
Discoverer Code:	RST5099	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	164328	HD catalog number
Hipparcos number:	88510	Hipparcos catalog number
V1:	9.19	Magnitude of the primary
V2:	9.01	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for RST5099

WDS 6th Orbit including measures of RST5099

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

Ephemeris of RST5099

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.138     12.8
-------------------------
2003.0     0.228    113.8
2004.0     0.206    117.4
2005.0     0.177    121.9
2006.0     0.141    128.6
2007.0     0.098    140.7
2008.0     0.057    171.9
2009.0     0.055    238.8
2010.0     0.095    272.2
2011.0     0.133    285.3
2012.0     0.161    293.1
2013.0     0.179    298.9
2014.0     0.188    303.8
2015.0     0.192    308.5
2016.0     0.191    313.1
2017.0     0.186    317.8
2018.0     0.180    322.8
2019.0     0.173    328.3
2020.0     0.165    334.2
2021.0     0.157    340.7
2022.0     0.150    347.9
2023.0     0.144    355.7
2024.0     0.140      4.1
2025.0     0.138     12.8
2026.0     0.138     21.7
2027.0     0.141     30.3
2028.0     0.146     38.5
2029.0     0.153     46.1
2030.0     0.161     52.9
2031.0     0.171     59.0
2032.0     0.181     64.4
2033.0     0.192     69.3
2034.0     0.203     73.6
2035.0     0.214     77.5
2036.0     0.225     81.0
2037.0     0.235     84.2
2038.0     0.244     87.1
2039.0     0.252     89.8
2040.0     0.259     92.4
2041.0     0.265     94.9
2042.0     0.269     97.2
2043.0     0.271     99.5
2044.0     0.271    101.8
2045.0     0.268    104.1
2046.0     0.263    106.5

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.