Collinder 135

Collinder 135
Simulated image of the Pi Puppis Cluster
Observation data (2000.0 epoch)
Right ascension07h 08m
Declination−37° 10′
Distance975 ± 36 ly (299 ± 11 pc)
Apparent magnitude (V)2.1
Apparent dimensions (V)50'
Physical characteristics
Estimated age36 ± 5 Myr
Other designationsPi Puppis Cluster, Cr 135, C 0715-367
Associations
ConstellationPuppis

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. 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.

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