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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:45:05

Orbital Elements for RST4136AB

WDS:	RST4136AB	WDS ID/Discoverer
P:	53.810	Orbital period (years)
a:	0.205	Semi-major axis (arcseconds)
i:	102.5	Inclination (degrees)
Ω:	17.1	Longitude of ascending node (degrees)
T:	1999.310	Epoch of periastron passage (year)
e:	0.038	Eccentricity
ω:	63.5	Longitude of periastron (degrees)
Start-Year:	1999.0	Year
End-Year:	2051.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST4136AB

Position:	235834.40-140730.3	Epoch-2000 right ascension and declination
WDS-ID:	23586-1408	WDS designation
Discoverer Code:	RST4136AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	224512	HD catalog number
Hipparcos number:	118205	Hipparcos catalog number
V1:	7.73	Magnitude of the primary
V2:	8.54	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2009	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for RST4136AB

WDS 6th Orbit including measures of RST4136AB

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

Ephemeris of RST4136AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.125    179.3
-------------------------
1999.0     0.102    355.6
2000.0     0.083    348.3
2001.0     0.064    336.8
2002.0     0.049    317.0
2003.0     0.043    286.7
2004.0     0.049    256.7
2005.0     0.065    237.3
2006.0     0.083    226.0
2007.0     0.103    218.9
2008.0     0.122    214.0
2009.0     0.140    210.5
2010.0     0.156    207.7
2011.0     0.171    205.4
2012.0     0.183    203.5
2013.0     0.193    201.7
2014.0     0.201    200.2
2015.0     0.206    198.7
2016.0     0.208    197.3
2017.0     0.208    195.9
2018.0     0.205    194.5
2019.0     0.200    193.0
2020.0     0.193    191.4
2021.0     0.183    189.7
2022.0     0.171    187.7
2023.0     0.157    185.5
2024.0     0.142    182.8
2025.0     0.125    179.3
2026.0     0.107    174.8
2027.0     0.089    168.5
2028.0     0.072    159.0
2029.0     0.057    143.9
2030.0     0.047    120.5
2031.0     0.047     92.2
2032.0     0.057     69.2
2033.0     0.072     54.3
2034.0     0.090     45.0
2035.0     0.108     38.7
2036.0     0.125     34.2
2037.0     0.142     30.8
2038.0     0.157     28.1
2039.0     0.170     25.8
2040.0     0.181     23.8
2041.0     0.190     22.1
2042.0     0.196     20.5
2043.0     0.200     18.9
2044.0     0.201     17.4
2045.0     0.200     15.9
2046.0     0.195     14.3
2047.0     0.188     12.7
2048.0     0.179     10.9
2049.0     0.166      8.8
2050.0     0.152      6.4

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.