Galactic Nebulae Sh 2-89 and Sh 2-90
History
The American astronomer Stewart Sharpless searched in the 1950-ies the photo plates of the «Palomar Observatory Sky Survey» made with the 48 inch Schmidt telescope and published it in 1959 a catalogue of 313 H-II regions, among them Sh 2-89 and Sh 2-90. [310] In 1965 Beverly T. Lynds added the nebula Sh 2-90 as LBN 063.10+00.46 (or LBN 144) in her «Catalogue of Bright Nebulae». [270]
Physical Properties
Sh 2-89 and 2-90 are H-II regions with active star formation. Many young stellar objects have been identified within the nebula. The gas is excited by O and B type of stars. The distance is estimated to 1.5 kpc. [145, 218, 607]
Finder Chart
The nebula Sharpess 2-90 is located in the constellation Vulpecula. The best observation time is May to October.
Visual Observation
Description pending ...