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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:33:59

Orbital Elements for KOH49CA,CB

WDS:	KOH49CA,CB	WDS ID/Discoverer
P:	19.020	Orbital period (years)
a:	0.118	Semi-major axis (arcseconds)
i:	136.3	Inclination (degrees)
Ω:	99.0	Longitude of ascending node (degrees)
T:	2038.690	Epoch of periastron passage (year)
e:	0.322	Eccentricity
ω:	212.5	Longitude of periastron (degrees)
Start-Year:	2016.0	Year
End-Year:	2034.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for KOH49CA,CB

Position:	154610.73-280423.2	Epoch-2000 right ascension and declination
WDS-ID:	15462-2804	WDS designation
Discoverer Code:	KOH49CA,CB	Discover designation and components
ADS number:	9775	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	8.0	Magnitude of the primary
V2:	8.7	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for KOH49CA,CB

WDS 6th Orbit including measures of KOH49CA,CB

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

Ephemeris of KOH49CA,CB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.133    109.7
-------------------------
2016.0     0.087    347.7
2017.0     0.086    323.5
2018.0     0.086    299.3
2019.0     0.082    274.1
2020.0     0.070    242.8
2021.0     0.064    200.9
2022.0     0.075    161.8
2023.0     0.097    137.0
2024.0     0.117    121.2
2025.0     0.133    109.7
2026.0     0.144    100.4
2027.0     0.149     92.0
2028.0     0.150     84.0
2029.0     0.146     75.8
2030.0     0.138     66.9
2031.0     0.128     56.8
2032.0     0.116     44.6
2033.0     0.103     29.5

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.