Editing Zenith (section)

===Zenith star===

Zenith stars (also "star on top", "overhead star", "latitude star")<ref name="Lewis 1972">{{cite web | last=Lewis | first=David | title=We, the navigators : the ancient art of landfinding in the Pacific | publisher=Australian National University Press | date=1972 | url=https://openresearch-repository.anu.edu.au/handle/1885/114874 | access-date=2023-06-01}}</ref> are stars whose declination equals the latitude of the observers location, and hence at some time in the day or night pass  [[Culmination|culminate]] (pass) through the zenith. When at the zenith the right ascension of the star equals the local sidereal time at your location. In [[celestial navigation]] this allows [[latitude]] to be determined, since the declination of the star equals the latitude of the observer.  If the current time at Greenwich is known at the time of the observation, the observers [[longitude]] can also be determined from the [[right ascension]] of the star. Hence "Zenith stars" lie on or near the circle of declination equal to the latitude of the observer ("zenith circle"). Zenith stars are not to be confused with "steering stars"<ref name="Lewis 1972"/> of a [[Compass rose#Sidereal|sidereal compass rose]] of a [[Sidereal time|sidereal]] compass.