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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:32:32

Orbital Elements for TOK408CA,CB

WDS:	TOK408CA,CB	WDS ID/Discoverer
P:	7.790	Orbital period (years)
a:	0.059	Semi-major axis (arcseconds)
i:	59.6	Inclination (degrees)
Ω:	108.5	Longitude of ascending node (degrees)
T:	2016.751	Epoch of periastron passage (year)
e:	0.038	Eccentricity
ω:	95.1	Longitude of periastron (degrees)
Start-Year:	2022.0	Year
End-Year:	2028.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK408CA,CB

Position:	153640.69-420802.7	Epoch-2000 right ascension and declination
WDS-ID:	15367-4208	WDS designation
Discoverer Code:	TOK408CA,CB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	138926	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	11.2	Magnitude of the primary
V2:	12.	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for TOK408CA,CB

WDS 6th Orbit including measures of TOK408CA,CB

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

Ephemeris of TOK408CA,CB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.037    244.9
-------------------------
2022.0     0.056     94.6
2023.0     0.056    118.8
2024.0     0.034    160.1
2025.0     0.037    244.9
2026.0     0.057    281.6
2027.0     0.053    306.5

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.