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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.

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Asbury Park, New Jersey

... the city the population is spread out with 30.1% under the age of 18, 10.6% from 18 to 24, 29.8% from 25 to 44, 18.3% from 45 to 64, and 11.2% who are 65 years of age ...