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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:25:05

Orbital Elements for TOK406

WDS:	TOK406	WDS ID/Discoverer
P:	8.290	Orbital period (years)
a:	0.0998	Semi-major axis (arcseconds)
i:	130.5	Inclination (degrees)
Ω:	7.3	Longitude of ascending node (degrees)
T:	2016.040	Epoch of periastron passage (year)
e:	0.373	Eccentricity
ω:	168.3	Longitude of periastron (degrees)
Start-Year:	2021.0	Year
End-Year:	2029.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK406

Position:	143814.49+140145.2	Epoch-2000 right ascension and declination
WDS-ID:	14382+1402	WDS designation
Discoverer Code:	TOK406	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	128731	HD catalog number
Hipparcos number:	71572	Hipparcos catalog number
V1:	8.5	Magnitude of the primary
V2:	10.	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for TOK406

WDS 6th Orbit including measures of TOK406

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

Ephemeris of TOK406

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.059    149.6
-------------------------
2021.0     0.133      3.4
2022.0     0.109    345.9
2023.0     0.066    310.1
2024.0     0.055    219.9
2025.0     0.059    149.6
2026.0     0.069     76.7
2027.0     0.105     40.6
2028.0     0.130     21.9

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.