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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:06:05

Orbital Elements for LTT15689

WDS:	LTT15689	WDS ID/Discoverer
P:	2.260	Orbital period (years)
a:	0.011269999999999999	Semi-major axis (arcseconds)
i:	147.73	Inclination (degrees)
Ω:	173.53	Longitude of ascending node (degrees)
T:	1990.363	Epoch of periastron passage (year)
e:	0.7886	Eccentricity
ω:	289.45	Longitude of periastron (degrees)
Start-Year:	2024.0	Year
End-Year:	2026.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for LTT15689

Position:	192841.77+343638.2	Epoch-2000 right ascension and declination
WDS-ID:	19287+3437	WDS designation
Discoverer Code:	LTT15689	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	183536	HD catalog number
Hipparcos number:	95769	Hipparcos catalog number
V1:	8.19	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1991	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for LTT15689

WDS 6th Orbit including measures of LTT15689

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

Ephemeris of LTT15689

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.016     75.4
-------------------------
2024.0     0.010     19.7
2025.0     0.016     75.4

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.