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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:37:12

Orbital Elements for HDS1140AB

WDS:	HDS1140AB	WDS ID/Discoverer
P:	34.875	Orbital period (years)
a:	0.372	Semi-major axis (arcseconds)
i:	119.3	Inclination (degrees)
Ω:	92.3	Longitude of ascending node (degrees)
T:	2001.248	Epoch of periastron passage (year)
e:	0.299	Eccentricity
ω:	156.6	Longitude of periastron (degrees)
Start-Year:	2008.0	Year
End-Year:	2042.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1140AB

Position:	080203.40-171018.6	Epoch-2000 right ascension and declination
WDS-ID:	08021-1710	WDS designation
Discoverer Code:	HDS1140AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	39293	Hipparcos catalog number
V1:	11.72	Magnitude of the primary
V2:	13.02	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2023	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS1140AB

WDS 6th Orbit including measures of HDS1140AB

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

Ephemeris of HDS1140AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.428     84.4
-------------------------
2008.0     0.186    200.4
2009.0     0.189    181.1
2010.0     0.206    163.8
2011.0     0.233    149.8
2012.0     0.266    139.0
2013.0     0.301    130.7
2014.0     0.335    124.1
2015.0     0.368    118.7
2016.0     0.397    114.1
2017.0     0.422    110.1
2018.0     0.442    106.5
2019.0     0.458    103.2
2020.0     0.468    100.1
2021.0     0.472     97.1
2022.0     0.471     94.1
2023.0     0.463     91.1
2024.0     0.449     87.9
2025.0     0.428     84.4
2026.0     0.401     80.5
2027.0     0.367     76.0
2028.0     0.327     70.5
2029.0     0.282     63.3
2030.0     0.235     53.2
2031.0     0.189     38.1
2032.0     0.155     14.9
2033.0     0.148    344.8
2034.0     0.171    317.8
2035.0     0.207    298.9
2036.0     0.241    285.6
2037.0     0.262    275.2
2038.0     0.268    265.8
2039.0     0.258    256.3
2040.0     0.239    245.5
2041.0     0.215    232.5

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.