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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:08:33

Orbital Elements for CHR258

WDS:	CHR258	WDS ID/Discoverer
P:	13.530	Orbital period (years)
a:	0.143	Semi-major axis (arcseconds)
i:	135.1	Inclination (degrees)
Ω:	302.5	Longitude of ascending node (degrees)
T:	2010.540	Epoch of periastron passage (year)
e:	0.165	Eccentricity
ω:	9.9	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 CHR258

Position:	115600.24+352026.1	Epoch-2000 right ascension and declination
WDS-ID:	11560+3520	WDS designation
Discoverer Code:	CHR258	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	103613	HD catalog number
Hipparcos number:	58184	Hipparcos catalog number
V1:	7.0	Magnitude of the primary
V2:	9.1	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2007	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR258

WDS 6th Orbit including measures of CHR258

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

Ephemeris of CHR258

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.107    267.8
-------------------------
2019.0     0.141     88.7
2020.0     0.118     65.9
2021.0     0.102     33.5
2022.0     0.103    356.2
2023.0     0.116    324.3
2024.0     0.119    297.3
2025.0     0.107    267.8
2026.0     0.095    229.3
2027.0     0.105    189.4
2028.0     0.129    161.1
2029.0     0.152    141.9
2030.0     0.165    127.0

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.