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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:16:55

Orbital Elements for NLTT50017

WDS:	NLTT50017	WDS ID/Discoverer
P:	2.511	Orbital period (years)
a:	0.0108	Semi-major axis (arcseconds)
i:	160.9	Inclination (degrees)
Ω:	143.1	Longitude of ascending node (degrees)
T:	2008.589	Epoch of periastron passage (year)
e:	0.502	Eccentricity
ω:	74.2	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 NLTT50017

Position:	205216.39-395950.5	Epoch-2000 right ascension and declination
WDS-ID:	20523-4000	WDS designation
Discoverer Code:	NLTT50017	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	103019	Hipparcos catalog number
V1:	10.39	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for NLTT50017

WDS 6th Orbit including measures of NLTT50017

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

Ephemeris of NLTT50017

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.015    244.8
-------------------------
2024.0     0.010    320.7
2025.0     0.015    244.8

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.