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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:22:30

Orbital Elements for RST4155

WDS:	RST4155	WDS ID/Discoverer
P:	49.270	Orbital period (years)
a:	0.1693	Semi-major axis (arcseconds)
i:	138.0	Inclination (degrees)
Ω:	177.9	Longitude of ascending node (degrees)
T:	2003.490	Epoch of periastron passage (year)
e:	0.305	Eccentricity
ω:	141.7	Longitude of periastron (degrees)
Start-Year:	2001.0	Year
End-Year:	2049.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST4155

Position:	004611.05-221429.3	Epoch-2000 right ascension and declination
WDS-ID:	00462-2214	WDS designation
Discoverer Code:	RST4155	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	4397	HD catalog number
Hipparcos number:	3606	Hipparcos catalog number
V1:	9.76	Magnitude of the primary
V2:	10.03	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for RST4155

WDS 6th Orbit including measures of RST4155

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

Ephemeris of RST4155

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.187    220.6
-------------------------
2001.0     0.094     65.7
2002.0     0.098     49.5
2003.0     0.104     34.9
2004.0     0.111     21.9
2005.0     0.117     10.5
2006.0     0.123      0.3
2007.0     0.127    350.8
2008.0     0.129    341.7
2009.0     0.130    332.9
2010.0     0.131    324.2
2011.0     0.131    315.5
2012.0     0.131    306.8
2013.0     0.131    298.2
2014.0     0.133    289.7
2015.0     0.135    281.4
2016.0     0.138    273.5
2017.0     0.142    265.9
2018.0     0.146    258.7
2019.0     0.152    252.1
2020.0     0.157    245.8
2021.0     0.163    240.1
2022.0     0.169    234.7
2023.0     0.175    229.7
2024.0     0.181    225.0
2025.0     0.187    220.6
2026.0     0.192    216.5
2027.0     0.196    212.5
2028.0     0.201    208.8
2029.0     0.204    205.1
2030.0     0.207    201.6
2031.0     0.209    198.2
2032.0     0.210    194.8
2033.0     0.210    191.5
2034.0     0.210    188.1
2035.0     0.208    184.7
2036.0     0.205    181.3
2037.0     0.202    177.7
2038.0     0.197    174.0
2039.0     0.191    170.0
2040.0     0.183    165.8
2041.0     0.175    161.2
2042.0     0.166    156.1
2043.0     0.155    150.3
2044.0     0.144    143.7
2045.0     0.132    135.9
2046.0     0.121    126.7
2047.0     0.110    115.5
2048.0     0.101    102.2

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.