Collinder 135
Collinder 135, known sometimes as the Pi Puppis Cluster, is an open cluster in Puppis constellation.
| Collinder 135 | |
|---|---|
 | |
| Observation data (2000.0 epoch) | |
| Constellation | Puppis |
| 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 |
It consists of four stars visible also to naked eye, and a widespread population of 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. 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.
References
- "Cl Collinder 135". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2011-08-15.
- H. Baumgardt (1998). "The Nature of some doubtful Open Clusters as revealed by Hipparcos". Astronomy and Astrophysics. Bibcode:1998A&A...340..402B. Retrieved 2011-08-15.
External links
- Observing Cr 135
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