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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:44:11

Orbital Elements for KUI79AB

WDS:	KUI79AB	WDS ID/Discoverer
P:	12.955	Orbital period (years)
a:	0.77612	Semi-major axis (arcseconds)
i:	146.96	Inclination (degrees)
Ω:	159.18	Longitude of ascending node (degrees)
T:	2016.935	Epoch of periastron passage (year)
e:	0.75167	Eccentricity
ω:	98.31	Longitude of periastron (degrees)
Start-Year:	2019.0	Year
End-Year:	2031.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for KUI79AB

Position:	171207.78+453957.6	Epoch-2000 right ascension and declination
WDS-ID:	17121+4540	WDS designation
Discoverer Code:	KUI79AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	155876	HD catalog number
Hipparcos number:	84140	Hipparcos catalog number
V1:	10.02	Magnitude of the primary
V2:	10.25	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for KUI79AB

WDS 6th Orbit including measures of KUI79AB

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

Ephemeris of KUI79AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.114    227.9
-------------------------
2019.0     0.765    280.3
2020.0     0.922    267.3
2021.0     1.031    257.7
2022.0     1.102    249.6
2023.0     1.139    242.2
2024.0     1.143    235.2
2025.0     1.114    227.9
2026.0     1.048    220.0
2027.0     0.938    210.7
2028.0     0.769    198.0
2029.0     0.505    175.0
2030.0     0.186     24.6

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.