Chamaeleon

Cha · genitive Chamaeleontis · southern sky

The Chamaeleon figure as the IAU defines it, drawn looking south with east to the left — the orientation you see standing outside.

At a glance

Catalogued stars
32
Visible to the eye
32 stars
Brightest star
Alp Cha (4.05)
Best seen
March
Declination span
-80.5° to -76.9°
Nearest star
Alp Cha · 63.8 ly

Visible from everywhere south of about 10°N.

When and where to look for Chamaeleon

Chamaeleon crosses the meridian — its highest point in the sky — at local midnight around March, which makes the months from February to April the easiest time to find it in the evening. It spans declinations -80.5° to -76.9°, so visible from everywhere south of about 10°N.

The quickest way to find it is to open the live AR sky map and point your phone at the sky — if Chamaeleon is above your horizon right now, its figure is drawn in the position it genuinely occupies above you.

Brightest stars in Chamaeleon

StarMagTypeDistance
Alp Cha4.05F5III63.8 ly
Gam Cha4.11M0III417.6 ly
Bet Cha4.24B5Vn298.4 ly
The Cha4.34K0III-IV155.3 ly
Del2Cha4.45B2.5IV350.7 ly
Eps Cha4.88B9Vn361.6 ly

Magnitude runs backwards: lower numbers are brighter, and anything below about 6.5 is beyond the naked eye under a dark sky.

What Chamaeleon is made of

The catalogue lists 32 stars within Chamaeleon, of which 32 are magnitude 6.5 or brighter — the limit of what an unaided eye picks up under a genuinely dark sky. The rest need binoculars or a telescope.

Spectral make-up

B9
A5
F4
G2
K11
M1

Spectral class is a temperature ordering, running from O at around 30,000 K down to M below 3,500 K. A constellation is a direction, not a group, so this is simply what happens to lie along that line of sight.

The closest catalogued star in this direction is Alp Cha at 63.8 light years. The most distant is HD 94717 at roughly 2,026 light years — stars that appear side by side here are nothing of the sort.

Nearby constellations