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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:55:49

Orbital Elements for HDS511

WDS:	HDS511	WDS ID/Discoverer
P:	84.500	Orbital period (years)
a:	0.207	Semi-major axis (arcseconds)
i:	117.4	Inclination (degrees)
Ω:	174.9	Longitude of ascending node (degrees)
T:	2020.830	Epoch of periastron passage (year)
e:	0.293	Eccentricity
ω:	258.6	Longitude of periastron (degrees)
Start-Year:	1983.0	Year
End-Year:	2067.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS511

Position:	040249.73-311433.3	Epoch-2000 right ascension and declination
WDS-ID:	04028-3115	WDS designation
Discoverer Code:	HDS511	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	8.86	Magnitude of the primary
V2:	9.92	Magnitude of the secondary
Equinox:		Equinox
Date:	2018	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS511

WDS 6th Orbit including measures of HDS511

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

Ephemeris of HDS511

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.086    224.0
-------------------------
1983.0     0.122     86.2
1984.0     0.122     80.8
1985.0     0.123     75.4
1986.0     0.124     70.1
1987.0     0.126     64.9
1988.0     0.128     60.0
1989.0     0.132     55.2
1990.0     0.135     50.7
1991.0     0.139     46.4
1992.0     0.144     42.4
1993.0     0.148     38.6
1994.0     0.153     35.1
1995.0     0.158     31.7
1996.0     0.162     28.6
1997.0     0.167     25.6
1998.0     0.171     22.8
1999.0     0.175     20.1
2000.0     0.179     17.6
2001.0     0.182     15.1
2002.0     0.185     12.7
2003.0     0.187     10.4
2004.0     0.188      8.1
2005.0     0.189      5.8
2006.0     0.188      3.6
2007.0     0.187      1.3
2008.0     0.185    359.0
2009.0     0.182    356.6
2010.0     0.177    354.1
2011.0     0.172    351.5
2012.0     0.165    348.6
2013.0     0.157    345.5
2014.0     0.147    342.1
2015.0     0.137    338.1
2016.0     0.126    333.4
2017.0     0.113    327.8
2018.0     0.101    320.8
2019.0     0.089    311.9
2020.0     0.079    300.4
2021.0     0.071    285.9
2022.0     0.068    269.0
2023.0     0.070    251.7
2024.0     0.076    236.4
2025.0     0.086    224.0
2026.0     0.098    214.4
2027.0     0.110    207.0
2028.0     0.123    201.1
2029.0     0.136    196.3
2030.0     0.147    192.2
2031.0     0.158    188.8
2032.0     0.168    185.8
2033.0     0.177    183.1
2034.0     0.185    180.6
2035.0     0.192    178.4
2036.0     0.198    176.3
2037.0     0.202    174.3
2038.0     0.206    172.3
2039.0     0.209    170.5
2040.0     0.211    168.6
2041.0     0.212    166.9
2042.0     0.213    165.1
2043.0     0.213    163.3
2044.0     0.212    161.5
2045.0     0.210    159.7
2046.0     0.208    157.9
2047.0     0.205    156.0
2048.0     0.202    154.1
2049.0     0.198    152.0
2050.0     0.194    150.0
2051.0     0.190    147.8
2052.0     0.185    145.5
2053.0     0.181    143.1
2054.0     0.176    140.6
2055.0     0.170    137.9
2056.0     0.165    135.0
2057.0     0.160    132.0
2058.0     0.155    128.8
2059.0     0.150    125.3
2060.0     0.145    121.6
2061.0     0.140    117.6
2062.0     0.136    113.4
2063.0     0.132    108.9
2064.0     0.129    104.2
2065.0     0.126     99.3
2066.0     0.124     94.1

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.