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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:52:51

Orbital Elements for HDS2530

WDS:	HDS2530	WDS ID/Discoverer
P:	59.900	Orbital period (years)
a:	0.514	Semi-major axis (arcseconds)
i:	58.9	Inclination (degrees)
Ω:	143.7	Longitude of ascending node (degrees)
T:	1998.250	Epoch of periastron passage (year)
e:	0.608	Eccentricity
ω:	250.9	Longitude of periastron (degrees)
Start-Year:	1996.0	Year
End-Year:	2054.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2530

Position:	175740.96-214309.5	Epoch-2000 right ascension and declination
WDS-ID:	17577-2143	WDS designation
Discoverer Code:	HDS2530	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	163573	HD catalog number
Hipparcos number:	87925	Hipparcos catalog number
V1:	10.21	Magnitude of the primary
V2:	12.68	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 HDS2530

WDS 6th Orbit including measures of HDS2530

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

Ephemeris of HDS2530

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.517    191.6
-------------------------
1996.0     0.246    329.3
1997.0     0.191    343.0
1998.0     0.130      9.3
1999.0     0.108     60.9
2000.0     0.156    102.1
2001.0     0.225    120.7
2002.0     0.288    130.7
2003.0     0.343    137.3
2004.0     0.389    142.1
2005.0     0.427    146.0
2006.0     0.459    149.3
2007.0     0.485    152.3
2008.0     0.507    154.9
2009.0     0.524    157.3
2010.0     0.538    159.7
2011.0     0.549    161.9
2012.0     0.557    164.0
2013.0     0.563    166.1
2014.0     0.567    168.1
2015.0     0.569    170.1
2016.0     0.569    172.1
2017.0     0.568    174.1
2018.0     0.565    176.2
2019.0     0.561    178.2
2020.0     0.556    180.3
2021.0     0.549    182.4
2022.0     0.542    184.6
2023.0     0.535    186.9
2024.0     0.526    189.2
2025.0     0.517    191.6
2026.0     0.508    194.1
2027.0     0.498    196.6
2028.0     0.488    199.3
2029.0     0.477    202.1
2030.0     0.467    205.0
2031.0     0.457    208.1
2032.0     0.446    211.3
2033.0     0.436    214.6
2034.0     0.427    218.1
2035.0     0.417    221.8
2036.0     0.409    225.6
2037.0     0.401    229.6
2038.0     0.393    233.7
2039.0     0.387    238.0
2040.0     0.381    242.4
2041.0     0.376    246.9
2042.0     0.372    251.6
2043.0     0.369    256.3
2044.0     0.367    261.1
2045.0     0.365    266.0
2046.0     0.364    270.9
2047.0     0.363    275.9
2048.0     0.361    280.8
2049.0     0.360    285.8
2050.0     0.357    290.9
2051.0     0.351    296.1
2052.0     0.343    301.5
2053.0     0.331    307.2

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.