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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:05:05

Orbital Elements for HDS637

WDS:	HDS637	WDS ID/Discoverer
P:	41.040	Orbital period (years)
a:	0.303	Semi-major axis (arcseconds)
i:	110.5	Inclination (degrees)
Ω:	248.7	Longitude of ascending node (degrees)
T:	2007.650	Epoch of periastron passage (year)
e:	0.55	Eccentricity
ω:	112.3	Longitude of periastron (degrees)
Start-Year:	2005.0	Year
End-Year:	2045.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS637

Position:	045556.72-305131.0	Epoch-2000 right ascension and declination
WDS-ID:	04559-3052	WDS designation
Discoverer Code:	HDS637	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	22921	Hipparcos catalog number
V1:	10.59	Magnitude of the primary
V2:	11.31	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2016	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS637

WDS 6th Orbit including measures of HDS637

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

Ephemeris of HDS637

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.187    306.3
-------------------------
2005.0     0.156    234.4
2006.0     0.095    218.7
2007.0     0.049    160.9
2008.0     0.088     95.4
2009.0     0.142     76.9
2010.0     0.178     67.8
2011.0     0.196     61.2
2012.0     0.203     55.3
2013.0     0.201     49.5
2014.0     0.195     43.6
2015.0     0.186     37.0
2016.0     0.175     29.8
2017.0     0.166     21.7
2018.0     0.157     12.6
2019.0     0.151      2.7
2020.0     0.149    352.2
2021.0     0.150    341.5
2022.0     0.155    331.3
2023.0     0.163    321.9
2024.0     0.174    313.6
2025.0     0.187    306.3
2026.0     0.201    300.0
2027.0     0.216    294.6
2028.0     0.232    289.9
2029.0     0.247    285.8
2030.0     0.262    282.2
2031.0     0.276    278.9
2032.0     0.289    276.0
2033.0     0.301    273.3
2034.0     0.312    270.8
2035.0     0.320    268.4
2036.0     0.327    266.2
2037.0     0.331    264.0
2038.0     0.332    261.8
2039.0     0.330    259.7
2040.0     0.324    257.5
2041.0     0.314    255.2
2042.0     0.298    252.7
2043.0     0.277    249.8
2044.0     0.247    246.4

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.