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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:28:06

Orbital Elements for TOK203

WDS:	TOK203	WDS ID/Discoverer
P:	7.272	Orbital period (years)
a:	0.046	Semi-major axis (arcseconds)
i:	137.0	Inclination (degrees)
Ω:	195.0	Longitude of ascending node (degrees)
T:	1994.999	Epoch of periastron passage (year)
e:	0.86	Eccentricity
ω:	105.0	Longitude of periastron (degrees)
Start-Year:	2022.0	Year
End-Year:	2028.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK203

Position:	012030.06-195656.4	Epoch-2000 right ascension and declination
WDS-ID:	01205-1957	WDS designation
Discoverer Code:	TOK203	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	8129	HD catalog number
Hipparcos number:	6273	Hipparcos catalog number
V1:	7.59	Magnitude of the primary
V2:	10.	Magnitude of the secondary
Equinox:		Equinox
Date:	1993	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for TOK203

WDS 6th Orbit including measures of TOK203

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

Ephemeris of TOK203

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.037    303.2
-------------------------
2022.0     0.060    249.7
2023.0     0.046    236.0
2024.0     0.010    175.6
2025.0     0.037    303.2
2026.0     0.053    283.7
2027.0     0.062    271.9

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.