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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:01:52

Orbital Elements for CHR17

WDS:	CHR17	WDS ID/Discoverer
P:	13.930	Orbital period (years)
a:	0.15	Semi-major axis (arcseconds)
i:	45.4	Inclination (degrees)
Ω:	125.3	Longitude of ascending node (degrees)
T:	1995.870	Epoch of periastron passage (year)
e:	0.6	Eccentricity
ω:	297.9	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 CHR17

Position:	043358.48+150949.3	Epoch-2000 right ascension and declination
WDS-ID:	04340+1510	WDS designation
Discoverer Code:	CHR17	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	285931	HD catalog number
Hipparcos number:	21280	Hipparcos catalog number
V1:	8.93	Magnitude of the primary
V2:	10.20	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2001	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR17

WDS 6th Orbit including measures of CHR17

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

Ephemeris of CHR17

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.098    155.9
-------------------------
2019.0     0.194    272.0
2020.0     0.186    281.0
2021.0     0.167    291.4
2022.0     0.132    306.0
2023.0     0.072    338.7
2024.0     0.060    104.3
2025.0     0.098    155.9
2026.0     0.117    184.3
2027.0     0.134    205.2
2028.0     0.150    221.5
2029.0     0.166    234.6
2030.0     0.179    245.5

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.