Chamaeleon
Cha · genitive Chamaeleontis · southern sky
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
| Star | Mag | Type | Distance |
|---|---|---|---|
| Alp Cha | 4.05 | F5III | 63.8 ly |
| Gam Cha | 4.11 | M0III | 417.6 ly |
| Bet Cha | 4.24 | B5Vn | 298.4 ly |
| The Cha | 4.34 | K0III-IV | 155.3 ly |
| Del2Cha | 4.45 | B2.5IV | 350.7 ly |
| Eps Cha | 4.88 | B9Vn | 361.6 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
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.