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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:52:59

Orbital Elements for KUI84AB

WDS:	KUI84AB	WDS ID/Discoverer
P:	14.717	Orbital period (years)
a:	0.17	Semi-major axis (arcseconds)
i:	61.0	Inclination (degrees)
Ω:	171.3	Longitude of ascending node (degrees)
T:	2030.899	Epoch of periastron passage (year)
e:	0.513	Eccentricity
ω:	10.8	Longitude of periastron (degrees)
Start-Year:	2018.0	Year
End-Year:	2032.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for KUI84AB

Position:	175824.46+042741.8	Epoch-2000 right ascension and declination
WDS-ID:	17584+0428	WDS designation
Discoverer Code:	KUI84AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	87991	Hipparcos catalog number
V1:	10.36	Magnitude of the primary
V2:	11.09	Magnitude of the secondary
Equinox:		Equinox
Date:	2019	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for KUI84AB

WDS 6th Orbit including measures of KUI84AB

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

Ephemeris of KUI84AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.233      3.7
-------------------------
2018.0     0.088    305.6
2019.0     0.148    328.0
2020.0     0.196    337.9
2021.0     0.229    344.4
2022.0     0.249    349.5
2023.0     0.255    354.1
2024.0     0.250    358.7
2025.0     0.233      3.7
2026.0     0.205      9.9
2027.0     0.166     18.5
2028.0     0.118     33.4
2029.0     0.073     68.9
2030.0     0.071    135.0
2031.0     0.079    181.2

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.