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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:33:48

Orbital Elements for TOK39AA,AB

WDS:	TOK39AA,AB	WDS ID/Discoverer
P:	0.260	Orbital period (years)
a:	0.0144	Semi-major axis (arcseconds)
i:	30.0	Inclination (degrees)
Ω:	241.0	Longitude of ascending node (degrees)
T:	1989.560	Epoch of periastron passage (year)
e:	0.689	Eccentricity
ω:	74.3	Longitude of periastron (degrees)
Start-Year:	2025.0	Year
End-Year:	2025.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK39AA,AB

Position:	021247.54-022337.1	Epoch-2000 right ascension and declination
WDS-ID:	02128-0224	WDS designation
Discoverer Code:	TOK39AA,AB	Discover designation and components
ADS number:	1703	Aitken Double Star catalog
HD number:	13612	HD catalog number
Hipparcos number:	10305	Hipparcos catalog number
V1:	6.18	Magnitude of the primary
V2:	6.69	Magnitude of the secondary
Equinox:		Equinox
Date:	2019	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for TOK39AA,AB

WDS 6th Orbit including measures of TOK39AA,AB

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

Ephemeris of TOK39AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.021    140.4
-------------------------

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.