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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:52:08

Orbital Elements for CHR117

WDS:	CHR117	WDS ID/Discoverer
P:	14.470	Orbital period (years)
a:	0.12	Semi-major axis (arcseconds)
i:	46.0	Inclination (degrees)
Ω:	235.0	Longitude of ascending node (degrees)
T:	1990.150	Epoch of periastron passage (year)
e:	0.35	Eccentricity
ω:	236.0	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 CHR117

Position:	033341.23+575207.1	Epoch-2000 right ascension and declination
WDS-ID:	03337+5752	WDS designation
Discoverer Code:	CHR117	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	21794	HD catalog number
Hipparcos number:	16602	Hipparcos catalog number
V1:	6.36	Magnitude of the primary
V2:	6.6	Magnitude of the secondary
Equinox:		Equinox
Date:	1998	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR117

WDS 6th Orbit including measures of CHR117

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

Ephemeris of CHR117

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.141    264.2
-------------------------
2018.0     0.088     55.4
2019.0     0.065     95.7
2020.0     0.061    163.8
2021.0     0.092    206.5
2022.0     0.121    227.1
2023.0     0.137    241.0
2024.0     0.143    252.7
2025.0     0.141    264.2
2026.0     0.133    276.5
2027.0     0.122    290.7
2028.0     0.111    308.0
2029.0     0.102    328.7
2030.0     0.098    352.4
2031.0     0.097     17.0

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.