Alterf - λ Leonis (lambda Leonis)
Alterf, also designated as λ Leonis (lambda Leonis), is a variable giant star in the constellation of Leo.
Alterf visual magnitude is 4.31. Because of its moderate brightness, Alterf should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.
The table below summarizes the key facts about Alterf:
Celestial coordinates and finder chart of Alterf
Alterf is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Alterf are provided in the following table:
The simplified sky map below shows the position of Alterf in the sky:
Visibility of Alterf from your location
Digitized Sky Survey image of Alterf
The image below is a photograph of Alterf from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of Alterf is -0.021 arcsec per year in Right Ascension and -0.033 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of Alterf from the Sun and relative movement
Alterf is distant 336.43 light years from the Sun and it is moving far from the Sun at the speed of 27 kilometers per second.
Spectral properties of Alterf
Alterf belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where Alterf is situated in the Hertzsprung–Russell diagram.