Collinder 135
| Collinder 135 | |
|---|---|
 |
|
| Observation data (2000.0 epoch) | |
| Constellation | Puppis |
| Right ascension | 07h 08m |
| Declination | −37° 10′ |
| Distance | ly (258 pc) |
| Apparent magnitude (V) | 2.1 |
| Apparent dimensions (V) | 50' |
| Physical characteristics | |
| Other designations | Pi Puppis Cluster; C 0715-367 |
Collinder 135, known sometimes as the Pi Puppis Cluster, is an open cluster in Puppis constellation.
It consists of four stars visible also to naked eye, and a widespread population of stars. 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. The 5th magnitude stars are all variables: one (NV Puppis) is a Gamma Cassiopeiae variable, and the other (NW Puppis) is a Beta Cephei variable.
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