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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:13:42

Orbital Elements for TOK385

WDS:	TOK385	WDS ID/Discoverer
P:	12.760	Orbital period (years)
a:	0.104	Semi-major axis (arcseconds)
i:	60.6	Inclination (degrees)
Ω:	100.2	Longitude of ascending node (degrees)
T:	2018.590	Epoch of periastron passage (year)
e:	0.95	Eccentricity
ω:	202.2	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 TOK385

Position:	125053.95-574317.7	Epoch-2000 right ascension and declination
WDS-ID:	12509-5743	WDS designation
Discoverer Code:	TOK385	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	111570	HD catalog number
Hipparcos number:	62699	Hipparcos catalog number
V1:	8.8	Magnitude of the primary
V2:	12.4	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 TOK385

WDS 6th Orbit including measures of TOK385

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

Ephemeris of TOK385

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.191    111.6
-------------------------
2019.0     0.050     95.1
2020.0     0.111    102.8
2021.0     0.146    105.6
2022.0     0.169    107.5
2023.0     0.184    109.0
2024.0     0.191    110.3
2025.0     0.191    111.6
2026.0     0.186    112.9
2027.0     0.174    114.3
2028.0     0.155    116.0
2029.0     0.128    118.4
2030.0     0.090    122.3

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.