Zosma - δ Leonis (delta Leonis)
Zosma, also designated as δ Leonis (delta Leonis), is a variable and multiple main-sequence star in the constellation of Leo.
Zosma visual magnitude is 2.56, making it the 96th brightest star in the sky. Thanks to its high brightness, Zosma is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.
The table below summarizes the key facts about Zosma:
Celestial coordinates and finder chart of Zosma
Zosma 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 Zosma are provided in the following table:
The simplified sky map below shows the position of Zosma in the sky:
Visibility of Zosma from your location
Digitized Sky Survey image of Zosma
The image below is a photograph of Zosma 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 Zosma is 0.142 arcsec per year in Right Ascension and -0.13 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of Zosma from the Sun and relative movement
Zosma is distant 57.68 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.
Spectral properties of Zosma
Zosma belongs to spectral class A4 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where Zosma is situated in the Hertzsprung–Russell diagram.
Zosma star system properties
Zosma is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the Zosma double sysyem: