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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:00:54

Orbital Elements for TOK325AA,AB

WDS:	TOK325AA,AB	WDS ID/Discoverer
P:	11.250	Orbital period (years)
a:	0.104	Semi-major axis (arcseconds)
i:	50.5	Inclination (degrees)
Ω:	106.8	Longitude of ascending node (degrees)
T:	2017.440	Epoch of periastron passage (year)
e:	0.253	Eccentricity
ω:	328.7	Longitude of periastron (degrees)
Start-Year:	2020.0	Year
End-Year:	2030.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK325AA,AB

Position:	185201.95-541807.0	Epoch-2000 right ascension and declination
WDS-ID:	18520-5418	WDS designation
Discoverer Code:	TOK325AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	174122	HD catalog number
Hipparcos number:	92592	Hipparcos catalog number
V1:	8.61	Magnitude of the primary
V2:	11.5	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for TOK325AA,AB

WDS 6th Orbit including measures of TOK325AA,AB

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

Ephemeris of TOK325AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.120    292.5
-------------------------
2020.0     0.070    180.4
2021.0     0.080    220.3
2022.0     0.101    247.0
2023.0     0.119    264.7
2024.0     0.126    278.7
2025.0     0.120    292.5
2026.0     0.098    310.2
2027.0     0.066    343.1
2028.0     0.056     48.6
2029.0     0.077     97.7

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.