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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:19:16

Orbital Elements for HDS3009

WDS:	HDS3009	WDS ID/Discoverer
P:	54.080	Orbital period (years)
a:	0.3482	Semi-major axis (arcseconds)
i:	56.8	Inclination (degrees)
Ω:	350.1	Longitude of ascending node (degrees)
T:	2013.300	Epoch of periastron passage (year)
e:	0.311	Eccentricity
ω:	143.3	Longitude of periastron (degrees)
Start-Year:	1998.0	Year
End-Year:	2052.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS3009

Position:	210717.49-570155.4	Epoch-2000 right ascension and declination
WDS-ID:	21073-5702	WDS designation
Discoverer Code:	HDS3009	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	200676	HD catalog number
Hipparcos number:	104256	Hipparcos catalog number
V1:	9.11	Magnitude of the primary
V2:	11.22	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS3009

WDS 6th Orbit including measures of HDS3009

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

Ephemeris of HDS3009

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.208    236.7
-------------------------
1998.0     0.394    356.0
1999.0     0.378    358.8
2000.0     0.360      1.9
2001.0     0.340      5.3
2002.0     0.316      9.2
2003.0     0.291     13.8
2004.0     0.263     19.3
2005.0     0.235     26.0
2006.0     0.206     34.8
2007.0     0.179     46.2
2008.0     0.157     61.2
2009.0     0.145     79.8
2010.0     0.146     99.9
2011.0     0.159    118.3
2012.0     0.179    133.2
2013.0     0.201    144.9
2014.0     0.222    154.3
2015.0     0.239    162.1
2016.0     0.251    169.1
2017.0     0.256    175.6
2018.0     0.257    182.0
2019.0     0.254    188.4
2020.0     0.247    195.1
2021.0     0.238    202.2
2022.0     0.229    209.9
2023.0     0.220    218.2
2024.0     0.213    227.2
2025.0     0.208    236.7
2026.0     0.207    246.5
2027.0     0.209    256.2
2028.0     0.216    265.5
2029.0     0.225    274.2
2030.0     0.237    282.1
2031.0     0.251    289.1
2032.0     0.267    295.4
2033.0     0.284    300.9
2034.0     0.301    305.9
2035.0     0.318    310.3
2036.0     0.334    314.2
2037.0     0.350    317.8
2038.0     0.365    321.1
2039.0     0.379    324.1
2040.0     0.391    327.0
2041.0     0.402    329.6
2042.0     0.412    332.2
2043.0     0.420    334.6
2044.0     0.426    336.9
2045.0     0.430    339.2
2046.0     0.432    341.5
2047.0     0.432    343.8
2048.0     0.429    346.0
2049.0     0.424    348.3
2050.0     0.417    350.7
2051.0     0.407    353.2

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.