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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:13:25

Orbital Elements for TOK720

WDS:	TOK720	WDS ID/Discoverer
P:	15.910	Orbital period (years)
a:	0.064	Semi-major axis (arcseconds)
i:	142.2	Inclination (degrees)
Ω:	123.7	Longitude of ascending node (degrees)
T:	2016.060	Epoch of periastron passage (year)
e:	0.05	Eccentricity
ω:	297.0	Longitude of periastron (degrees)
Start-Year:	2018.0	Year
End-Year:	2032.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK720

Position:	124751.87-512638.2	Epoch-2000 right ascension and declination
WDS-ID:	12479-5127	WDS designation
Discoverer Code:	TOK720	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	111170	HD catalog number
Hipparcos number:	62445	Hipparcos catalog number
V1:	10.1	Magnitude of the primary
V2:	10.5	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for TOK720

WDS 6th Orbit including measures of TOK720

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

Ephemeris of TOK720

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.061    339.9
-------------------------
2018.0     0.061    135.6
2019.0     0.063    116.6
2020.0     0.061     97.5
2021.0     0.057     76.3
2022.0     0.053     52.0
2023.0     0.053     25.9
2024.0     0.056      1.2
2025.0     0.061    339.9
2026.0     0.065    321.4
2027.0     0.065    304.2
2028.0     0.063    286.5
2029.0     0.057    266.0
2030.0     0.051    240.5
2031.0     0.048    210.2

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.