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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:04:28

Orbital Elements for TOK383AA,AB

WDS:	TOK383AA,AB	WDS ID/Discoverer
P:	12.990	Orbital period (years)
a:	0.041	Semi-major axis (arcseconds)
i:	141.3	Inclination (degrees)
Ω:	10.7	Longitude of ascending node (degrees)
T:	2020.254	Epoch of periastron passage (year)
e:	0.37	Eccentricity
ω:	166.2	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 TOK383AA,AB

Position:	111914.66-194943.8	Epoch-2000 right ascension and declination
WDS-ID:	11192-1950	WDS designation
Discoverer Code:	TOK383AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	98412	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	8.9	Magnitude of the primary
V2:	9.1	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2023	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for TOK383AA,AB

WDS 6th Orbit including measures of TOK383AA,AB

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

Ephemeris of TOK383AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.049     42.7
-------------------------
2019.0     0.025    273.5
2020.0     0.025    215.1
2021.0     0.027    164.8
2022.0     0.028    118.5
2023.0     0.034     82.5
2024.0     0.042     58.9
2025.0     0.049     42.7
2026.0     0.054     30.0
2027.0     0.056     18.8
2028.0     0.055      7.8
2029.0     0.050    355.7
2030.0     0.043    340.1

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.