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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:15:01

Orbital Elements for KAPDEL

WDS:	KAPDEL	WDS ID/Discoverer
P:	45.000	Orbital period (years)
a:	0.52	Semi-major axis (arcseconds)
i:	107.0	Inclination (degrees)
Ω:	326.0	Longitude of ascending node (degrees)
T:	1971.200	Epoch of periastron passage (year)
e:	0.8	Eccentricity
ω:	8.0	Longitude of periastron (degrees)
Start-Year:	2003.0	Year
End-Year:	2047.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for KAPDEL

Position:	203907.78+100510.3	Epoch-2000 right ascension and declination
WDS-ID:	20391+1005	WDS designation
Discoverer Code:	KAPDEL	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	196755	HD catalog number
Hipparcos number:	101916	Hipparcos catalog number
V1:	5.1	Magnitude of the primary
V2:	9.1 >	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for KAPDEL

WDS 6th Orbit including measures of KAPDEL

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

Ephemeris of KAPDEL

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.653    151.1
-------------------------
2003.0     0.764    138.9
2004.0     0.729    138.2
2005.0     0.691    137.5
2006.0     0.648    136.6
2007.0     0.601    135.7
2008.0     0.549    134.5
2009.0     0.492    133.1
2010.0     0.430    131.3
2011.0     0.361    128.9
2012.0     0.285    125.2
2013.0     0.202    118.7
2014.0     0.115    102.3
2015.0     0.060     33.4
2016.0     0.104    330.6
2017.0     0.050    264.4
2018.0     0.125    177.4
2019.0     0.232    164.4
2020.0     0.326    159.4
2021.0     0.408    156.6
2022.0     0.481    154.7
2023.0     0.545    153.2
2024.0     0.602    152.1
2025.0     0.653    151.1
2026.0     0.699    150.3
2027.0     0.739    149.6
2028.0     0.775    148.9
2029.0     0.807    148.3
2030.0     0.834    147.7
2031.0     0.858    147.2
2032.0     0.878    146.7
2033.0     0.895    146.2
2034.0     0.908    145.7
2035.0     0.918    145.3
2036.0     0.925    144.8
2037.0     0.928    144.4
2038.0     0.929    144.0
2039.0     0.927    143.5
2040.0     0.921    143.1
2041.0     0.913    142.6
2042.0     0.901    142.2
2043.0     0.886    141.7
2044.0     0.868    141.2
2045.0     0.847    140.7
2046.0     0.823    140.1

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.