Menu

C107

NGC 6101

Globular Cluster Good (56/100)
C107 GlobularCluster Apus Visible Level 3 Medium telescope (6-8") - Higher magnification helpful
Credit: NASA - Hubble Space Telescope. License: Public domain. (Wikimedia Commons)
Star Map Add to List Add to Plan
Back to Catalog

Properties

Magnitude 9.3
Angular Size 4.5′
Distance 49900 ly
Globular Cluster [Distance: 49900 ly]

Position & Identifiers

RA 16h 27m 04.1s
Dec -72° 12' 07.2"
Constellation Apus
Catalog C107

Visibility

Set a location in User Settings to see visibility data.

Survey Image

Loading survey image…

About C107

Description

NGC 6101 is a loose, sparse globular cluster in Apus, about 47,600 light-years away. It spans about 11 arcminutes and shines at magnitude 9.3, making it one of the fainter Caldwell globulars.

Observing Tips

A small, faint glow in a 6-inch telescope. An 8-inch scope begins to resolve a few outer stars. Its sparse nature means it never looks as impressive as the more concentrated globulars. Best from southern latitudes in winter.

History

Discovered by James Dunlop on June 1, 1826 from Australia. It is one of the least concentrated globular clusters known.

Fun Facts

NGC 6101 has one of the lowest central concentrations of any globular cluster. Studies suggest it may contain an intermediate-mass black hole that has gravitationally stirred the cluster, pushing stars outward and preventing core collapse.

Community Photos (1)

Credit: NASA - Hubble Space Telescope. License: Public domain. (Wikimedia Commons)

Credit: NASA - Hubble Space Telescope. License: Public domain. (Wikimedia Commons)

Skybred Mar 2, 2026