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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:22:26

Orbital Elements for CHR102

WDS:	CHR102	WDS ID/Discoverer
P:	9.680	Orbital period (years)
a:	0.055	Semi-major axis (arcseconds)
i:	58.6	Inclination (degrees)
Ω:	223.7	Longitude of ascending node (degrees)
T:	1984.260	Epoch of periastron passage (year)
e:	0.587	Eccentricity
ω:	89.7	Longitude of periastron (degrees)
Start-Year:	2021.0	Year
End-Year:	2029.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR102

Position:	213256.58+495839.4	Epoch-2000 right ascension and declination
WDS-ID:	21329+4959	WDS designation
Discoverer Code:	CHR102	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	205314	HD catalog number
Hipparcos number:	106393	Hipparcos catalog number
V1:	6.40	Magnitude of the primary
V2:	6.62	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR102

WDS 6th Orbit including measures of CHR102

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

Ephemeris of CHR102

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.050     74.2
-------------------------
2021.0     0.049    193.4
2022.0     0.042    215.4
2023.0     0.012    319.9
2024.0     0.042     52.7
2025.0     0.050     74.2
2026.0     0.049     93.6
2027.0     0.046    114.6
2028.0     0.045    137.3

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.