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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:57:28

Orbital Elements for RST2338

WDS:	RST2338	WDS ID/Discoverer
P:	36.330	Orbital period (years)
a:	0.296	Semi-major axis (arcseconds)
i:	55.6	Inclination (degrees)
Ω:	136.9	Longitude of ascending node (degrees)
T:	1993.010	Epoch of periastron passage (year)
e:	0.011	Eccentricity
ω:	166.0	Longitude of periastron (degrees)
Start-Year:	2007.0	Year
End-Year:	2043.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST2338

Position:	041409.55-460756.0	Epoch-2000 right ascension and declination
WDS-ID:	04142-4608	WDS designation
Discoverer Code:	RST2338	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	27019	HD catalog number
Hipparcos number:	19758	Hipparcos catalog number
V1:	8.48	Magnitude of the primary
V2:	7.19	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2015	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for RST2338

WDS 6th Orbit including measures of RST2338

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

Ephemeris of RST2338

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.210    274.9
-------------------------
2007.0     0.221     98.5
2008.0     0.243    107.6
2009.0     0.263    115.2
2010.0     0.280    121.9
2011.0     0.292    127.9
2012.0     0.298    133.5
2013.0     0.299    139.0
2014.0     0.293    144.6
2015.0     0.282    150.5
2016.0     0.267    157.0
2017.0     0.247    164.4
2018.0     0.225    173.2
2019.0     0.203    184.0
2020.0     0.183    197.3
2021.0     0.170    213.1
2022.0     0.167    230.5
2023.0     0.174    247.6
2024.0     0.190    262.6
2025.0     0.210    274.9
2026.0     0.232    285.0
2027.0     0.253    293.3
2028.0     0.271    300.5
2029.0     0.284    306.8
2030.0     0.291    312.8
2031.0     0.293    318.5
2032.0     0.288    324.3
2033.0     0.278    330.4
2034.0     0.262    337.1
2035.0     0.243    344.8
2036.0     0.221    353.9
2037.0     0.200      5.0
2038.0     0.182     18.6
2039.0     0.170     34.6
2040.0     0.168     51.9
2041.0     0.176     68.6
2042.0     0.193     83.1

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.