Encyclopedia > HDE

Article Content

HDE

The Henry Draper catalogue Extension is an extension to the famous Henry Draper Catalogue, a collection of positional and spectroscopic data about hundreds of thousands of stars.

It can be recognized by the prefix HDE, followed by a number indicating the star's position in the catalogue.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

East Marion, New York

... (360.6/mi²). There are 744 housing units at an average density of 136.8/km² (354.8/mi²). The racial makeup of the town is 95.24% White, 0.93% ...