What Does HD Stand For?
HD stands for Henry Draper Catalog Entry
The Henry Draper Catalog Entry (HD) is a designation used to identify stars within the Henry Draper Catalog, an extensive astronomical catalog that contains detailed information on over 225,000 stars. Compiled by Anne Jump Cannon and her colleagues at Harvard College Observatory in the early 20th century, the catalog provides stellar classifications, positions, and magnitudes. Each HD entry serves as a unique identifier for researchers and astronomers, facilitating the study and analysis of stellar properties and their distributions in the galaxy.
Added on 14th April 2008 | Last edited on 16th June 2025 | Edit Acronym