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Zodiac: Libra
Sep 24 - Oct 23
Read more about Libra.
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NGC 6397 ()

NGC 6397 (M 0) is a globular star cluster and in the constellation of Altar. It is also known as the . It is approximately 7,800 lightyears away from earth.
This globular cluster in the constellation of Altar contains around 400.000 stars. It is approximately 8,200 lightyears away from earth, which makes it one of the closest globular clusters. It has undergone a core collapse, which means that the center of the cluster has contracted into a very dense stellar agglomeration. White dwarfs, neutron stars, and black holes are likely to be at the center of the cluster.
Right ascension
-6h -19m -9.84s (-94.79100°)
The magnitude (brightness) is measured on a logarithmic scale. Small numbers mean bright stars: A star with a brightness of 1 mag is 100 times brighter that an star with 6 mag.
5.3 mag
not in database
The distance is measured in light years (LY). A light year is the distance, that light travels within one year. 1 LJ is equal to about 5,878,630,000,000 miles.
7,8007,800 ly
not in database
Messier NºMessier Nº
Every star belongs to a constellation, and 12 of those constellations are part of the zodiac.
Ara (Altar)
Photograph of NGC 6397 by the Hubble Space Telescope.
Image credit: NASA, ESA, and The Hubble Heritage Team (STScI/AURA).
While we take great care in compiling the data of all astronomical objects in our database, errors can never be ruled out completely. Therefore, no warranty is taken over for the correctness of the data, the descriptions, or the associated images. Staracle cannot be held liable for any damage, direct or indirect, that may result from incorrect data.
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