| Collinder 135 | |
| Epoch: | 2000.0 |
| Constellation: | Puppis |
| Ra: | [1] |
| Appmag V: | 2.1 |
| Size V: | 50' |
| Dist Ly: | 1,040.5 ly |
| Dist Pc: | 319 pc |
| Names: | Pi Puppis Cluster, Cr 135, C 0715-367 |
Collinder 135, known sometimes as the Pi Puppis Cluster, is an open cluster in Puppis constellation.
It consists of six stars brighter than 6th magnitude, and a widespread population of fainter stars.[2] It lies in the southern celestial hemisphere near a rich star field. The main component is the star Pi Puppis, which gives to the cluster its common name; it is an orange supergiant with a visual magnitude of 2.71. Two of the 5th magnitude stars are all variables: NV Puppis is a Gamma Cassiopeiae variable, while NW Puppis is a Beta Cephei variable.