Messier 19 (M19) is a globular star cluster in the constellation Ophiuchus, notable for its distinct elongated, oval shape, which is caused by the strong tidal forces from the Milky Way's center, as it's located on the far side of the galactic core from Earth. Discovered by Charles Messier in 1764, it appears as a fuzzy patch in binoculars but can be resolved into individual stars with larger telescopes, and it's best observed in the summer.
Type: Globular cluster (NGC 6273)
Location: Constellation Ophiuchus, near the plane of the Milky Way
Distance: Approximately 28,700 light-years from Earth, but only about 6,500 light-years from the galactic center
Appearance: Distinctly oval or "oblate," unlike most spherical globular clusters, due to tidal forces from the galactic center
Visibility: Apparent magnitude of about 7.7, making it visible as a faint patch with binoculars and resolvable with larger telescopes
Best viewing: Mid-summer
Its elongated shape is less apparent in infrare