lunar distance
Noun
Meaning
(navigation) The angle between the Moon and another celestial body.
(astronomy) A measurement of the distance from the Earth to the Moon.
Source: en.wiktionary.orgSynonyms
Examples
Though the Board of Longitude rewarded John Harrison for his marine chronometer in 1773, chronometers remained very expensive and the lunar distance method continued to be used for decades.
This gives a ratio of solar to lunar distance of approximately 19, matching Aristarchus's figure.