Puppis
Pup · genitive Puppis · southern sky
At a glance
- Catalogued stars
- 243
- Visible to the eye
- 243 stars
- Brightest star
- Naos (2.21)
- Best seen
- January
- Declination span
- -47.3° to -22.9°
- Nearest star
- HD 69830 · 40.7 ly
Visible from everywhere south of about 43°N.
When and where to look for Puppis
Puppis crosses the meridian — its highest point in the sky — at local midnight around January, which makes the months from December to February the easiest time to find it in the evening. It spans declinations -47.3° to -22.9°, so visible from everywhere south of about 43°N.
The quickest way to find it is to open the live AR sky map and point your phone at the sky — if Puppis is above your horizon right now, its figure is drawn in the position it genuinely occupies above you.
Brightest stars in Puppis
| Star | Mag | Type | Distance |
|---|---|---|---|
| NaosZet Pup | 2.21 | O5IAf | 1,083.6 ly |
| Pi Pup | 2.71 | K3Ib | 807.3 ly |
| Tureis15Rho Pup | 2.83 | F2mF5IIp | 63.5 ly |
| Tau Pup | 2.94 | K0III... | 182 ly |
| Nu Pup | 3.17 | B8III SB | 371.5 ly |
| Sig Pup | 3.25 | K5III SB | 193.7 ly |
Magnitude runs backwards: lower numbers are brighter, and anything below about 6.5 is beyond the naked eye under a dark sky.
What Puppis is made of
The catalogue lists 243 stars within Puppis, of which 243 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 HD 69830 at 40.7 light years. The most distant is HD 68450 at roughly 3,198 light years — stars that appear side by side here are nothing of the sort.