EntityQ1603220· pop 12· linked from 7 articlesHelmertSign in to savelunar craterConnectionsEarthConceptMoonConceptNASAConceptgeographic coordinate systemEntityInternational Standard Book NumberEntitydiameterEntitylavaEntitydigital object identifierEntityInternational Astronomical UnionEntityalbedoEntityimpact craterEntityApollo 8EntityApollo 17ConceptbibcodeEntityeponymEntitylunar mareEntitylibrationEntityUnited States Geological SurveyEntityCambridge University PressEntityPatrick MooreEntityCategoriesImpact craters on the MoonLQ21 quadrangle