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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:15:32

Orbital Elements for CHR203

WDS:	CHR203	WDS ID/Discoverer
P:	13.560	Orbital period (years)
a:	0.0848	Semi-major axis (arcseconds)
i:	160.0	Inclination (degrees)
Ω:	135.9	Longitude of ascending node (degrees)
T:	1993.650	Epoch of periastron passage (year)
e:	0.947	Eccentricity
ω:	50.0	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 CHR203

Position:	053630.18+255624.4	Epoch-2000 right ascension and declination
WDS-ID:	05365+2556	WDS designation
Discoverer Code:	CHR203	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	36994	HD catalog number
Hipparcos number:	26322	Hipparcos catalog number
V1:	6.5	Magnitude of the primary
V2:	8.3	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR203

WDS 6th Orbit including measures of CHR203

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

Ephemeris of CHR203

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.146    273.8
-------------------------
2019.0     0.094    251.6
2020.0     0.057    241.2
2021.0     0.026    311.3
2022.0     0.079    287.2
2023.0     0.110    280.7
2024.0     0.131    276.8
2025.0     0.146    273.8
2026.0     0.155    271.2
2027.0     0.159    268.9
2028.0     0.159    266.6
2029.0     0.154    264.3
2030.0     0.145    261.7

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.