Celestial hemisphere:  Southern  ·  Constellation: Ara (Ara)  ·  Contains:  NGC 6397  ·  PGC 2801202  ·  PGC 2801203  ·  PGC 2801216  ·  PGC 2801217  ·  PGC 2801218  ·  PGC 2801219  ·  PGC 2801220  ·  PGC 2801221  ·  PGC 2801934
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Caldwell 86 - second closer globular cluster to Earth., Claudio Tenreiro
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Caldwell 86 - second closer globular cluster to Earth.

Getting plate-solving status, please wait...
Caldwell 86 - second closer globular cluster to Earth., Claudio Tenreiro
Powered byPixInsight

Caldwell 86 - second closer globular cluster to Earth.

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Description

Caldwell 86 or NGC 6397 in the ARA constellation is the second closer globular cluster to Earth, falling behind M4 for not that much.

(My image of M4 at: https://www.astrobin.com/b6fjdh/)

A nice description can be found at https://www.nasa.gov/feature/goddard/caldwell-86

Estimated Mass = 1.2x10^5 Sm

Estimated age = 13.4 +/- 0.8 Gyr

radius = 34 ly

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