Skip to content
Home » Open Cluster » Page 4

Open Cluster

m23,open cluster,ngc 6494

Messier 23

  • by

Messier 23 (M23) is a bright, large open star cluster located in the constellation Sagittarius. The cluster lies at a distance of 2,150 light years, or 659 parsecs, from Earth and has an apparent magnitude of 6.9. It has the designation NGC 6494 in the New General Catalogue.
Read More »Messier 23

m21,ngc 6531

Messier 21

  • by

Messier 21 (M21) is an open cluster located in the southern constellation Sagittarius. It has an apparent magnitude of 6.5. The cluster lies at an approximate distance of 4,250 light years from Earth. Its designation in the New General Catalogue is NGC 6531.
Read More »Messier 21

trifid nebula,ngc 6514

Messier 20: Trifid Nebula

  • by

Messier 20 (M20), also known as the Trifid Nebula, is a famous star-forming region located in the constellation Sagittarius. The nebula’s designation in the New General Catalogue is NGC 6514. The name Trifid refers to its three-lobed appearance. Messier 20 consists of several different objects: an emission nebula, a reflection nebula, a dark nebula and an open star cluster.
Read More »Messier 20: Trifid Nebula

m18,ngc 6613,open cluster

Messier 18

  • by

Messier 18 (M18) is a relatively dim open star cluster located in the constellation Sagittarius. The cluster lies at an approximate distance of 4,900 light years, or 1,500 parsecs, from Earth and has an apparent magnitude of 7.5. Its designation in the New General Catalogue is NGC 6613.
Read More »Messier 18

m8,lagoon nebula,ngc 6523

Messier 8: Lagoon Nebula

  • by

Messier 8 (M8), also known as the Lagoon Nebula, is a large, bright emission nebula located in the constellation Sagittarius. The star-forming nebula has an apparent magnitude of 6.0 and lies at a distance of 4,100 light years from Earth. It has the designation NGC 6523 in the New General Catalogue.
Read More »Messier 8: Lagoon Nebula