Henry Draper Extension

URI: https://gptkb.org/entity/Henry_Draper_Extension
GPTKB entity
Statements (13)
Predicate Object
gptkbp:instanceOf gptkb:astronomer
gptkbp:compiledBy gptkb:Harvard_College_Observatory
gptkbp:contains stellar spectra
star classifications
gptkbp:expansion gptkb:Henry_Draper_Extension_Charts
gptkbp:firstPublished 1918
gptkbp:namedAfter gptkb:Henry_Draper
gptkbp:partOf gptkb:Henry_Draper_Catalogue
gptkbp:publishedBy gptkb:Harvard_College_Observatory
gptkbp:usedFor gptkb:stellar_classification
gptkbp:bfsParent gptkb:Henry_Draper_Catalogue
gptkbp:bfsLayer 6
https://www.w3.org/2000/01/rdf-schema#label Henry Draper Extension