Per Collinder
Encyclopedia
Per Collinder was a Swedish
astronomer
. He is known for a catalog of open cluster
s that he published in 1931, which is today known as the Collinder catalog
. He has written two books History of navigation and Worlds in orbit.
He was married twice, and his first wife gave him four children.
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....
astronomer
Astronomer
An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...
. He is known for a catalog of open cluster
Open cluster
An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age. More than 1,100 open clusters have been discovered within the Milky Way Galaxy, and many more are thought to exist...
s that he published in 1931, which is today known as the Collinder catalog
Collinder catalog
In astronomy, the Collinder catalog is a catalog of open clusters by Swedish astronomer Per Collinder. It was published in 1931 as an appendix to Collinder's paper On structural properties of open galactic clusters and their spatial distribution. Catalog objects may be denoted as Col + catalog...
. He has written two books History of navigation and Worlds in orbit.
He was married twice, and his first wife gave him four children.