Collinder 135
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Collinder 135, known sometimes as the Pi Puppis Cluster, is an open cluster in Puppis constellation.
Quick Facts Observation data (2000.0 epoch), Right ascension ...
Collinder 135 | |
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Observation data (2000.0 epoch) | |
Right ascension | 07h 08m [1] |
Declination | −37° 10′[1] |
Distance | 1,040.5 ly (319 pc [1]) |
Apparent magnitude (V) | 2.1[1] |
Apparent dimensions (V) | 50' |
Physical characteristics | |
Other designations | Pi Puppis Cluster, Cr 135, C 0715-367 |
Associations | |
Constellation | Puppis |
See also: Open cluster, List of open clusters |
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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.