M55. Globular Cluster, AlBroxton

M55. Globular Cluster

Equipment

Loading...

Acquisition details

Loading...

Description

Messier 55 (also known as M55 or NGC 6809) is a globular cluster in the constellation Sagittarius. It was discovered by Nicolas Louis de Lacaille in 1751 and catalogued by Charles Messier in 1778. M55 is at a distance of about 17,300 light-years away from Earth. Only about half a dozen variable stars have been discovered in M55. M55 was originally discovered by Nicholas Louis de Lacaille on June 16, 1752, when he was observing in South Africa, and cataloged by him as Lac I.14. Charles Messier finally found it and cataloged it on July 24, 1778, after having looked in vain as early as 1764: This is a consequence of this object's southern declination.

Comments

Revisions

  • M55. Globular Cluster, AlBroxton
    Original
  • M55. Globular Cluster, AlBroxton
    B
  • Final
    M55. Globular Cluster, AlBroxton
    C

Histogram

M55. Globular Cluster, AlBroxton