- parallactic equation
- noun
: a minor inequality of the moon's orbital motion caused by the difference between the sun's perturbing action on the moon when at new and full and used in finding the sun's parallax
Useful english dictionary. 2012.
parallactic equation
Look at other dictionaries:
parallax — parallactic /par euh lak tik/, adj. parallactically, adv. /par euh laks /, n. 1. the apparent displacement of an observed object due to a change in the position of the observer. 2. Astron. the apparent angular displacement of a celestial body due … Universalium
star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… … Universalium
Cardinal direction — Cardinal point redirects here. For other uses of the term, see Cardinal point (disambiguation). A compass rose showing the four cardinal directions, the four ordinal directions, plus eight further divisions. The four cardinal directions or… … Wikipedia
