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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:59:04

Orbital Elements for TOK44AA,AB

WDS:	TOK44AA,AB	WDS ID/Discoverer
P:	8.742	Orbital period (years)
a:	0.15058	Semi-major axis (arcseconds)
i:	56.559	Inclination (degrees)
Ω:	49.955	Longitude of ascending node (degrees)
T:	2009.697	Epoch of periastron passage (year)
e:	0.13289	Eccentricity
ω:	259.118	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 TOK44AA,AB

Position:	103700.02-085023.6	Epoch-2000 right ascension and declination
WDS-ID:	10370-0850	WDS designation
Discoverer Code:	TOK44AA,AB	Discover designation and components
ADS number:	7854	Aitken Double Star catalog
HD number:	91962	HD catalog number
Hipparcos number:	51966	Hipparcos catalog number
V1:	7.19	Magnitude of the primary
V2:	10.05	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for TOK44AA,AB

WDS 6th Orbit including measures of TOK44AA,AB

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

Ephemeris of TOK44AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.143    215.1
-------------------------
2021.0     0.153     60.4
2022.0     0.125     86.2
2023.0     0.095    131.2
2024.0     0.111    183.7
2025.0     0.143    215.1
2026.0     0.135    239.9
2027.0     0.082    285.5
2028.0     0.096      9.2

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.