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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:36:01

Orbital Elements for 13TRI

WDS:	13TRI	WDS ID/Discoverer
P:	9.000	Orbital period (years)
a:	0.02	Semi-major axis (arcseconds)
i:	82.0	Inclination (degrees)
Ω:	145.0	Longitude of ascending node (degrees)
T:	1985.000	Epoch of periastron passage (year)
e:	0.0	Eccentricity
ω:	0.0	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 13TRI

Position:	022848.54+295553.7	Epoch-2000 right ascension and declination
WDS-ID:	02288+2956	WDS designation
Discoverer Code:	13TRI	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	15335	HD catalog number
Hipparcos number:	11548	Hipparcos catalog number
V1:	5.91	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for 13TRI

WDS 6th Orbit including measures of 13TRI

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

Ephemeris of 13TRI

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.019    322.1
-------------------------
2021.0     0.020    145.0
2022.0     0.015    151.7
2023.0     0.004    183.3
2024.0     0.010    311.4
2025.0     0.019    322.1
2026.0     0.019    327.9
2027.0     0.010    338.6
2028.0     0.004    106.7

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.