What does prime vertical mean?
Definitions for prime vertical
prime ver·ti·cal
This dictionary definitions page includes all the possible meanings, example usage and translations of the word prime vertical.
Wikipedia
Prime vertical
In astronomy, astrology, and geodesy, the prime vertical or first vertical is the vertical circle passing east and west through the zenith of a specific location, and intersecting the horizon in its east and west points. In other words, the prime vertical is the vertical circle perpendicular to the meridian, and passes through the east and west points, zenith, and nadir of any place. A heavenly body is in or on the prime vertical when it bears true east or true west—when it is at right angles to the meridian. When a body is observed on the prime vertical for the purpose of calculating the longitude, a consider error in the latitude by dead-reckoning (used in the computation) will not appreciable affect the result. By this it will be understood that the best time to observe a longitude sight (be it sun, moon, planet, or star) is when the body is on the prime vertical ; but it is to be explained that it is not always possible to obtain such an observation, for a heavenly body can only be true east or true west when its declination is of the same name as the ship's latitude and less than the latter. When the declination of the body is of the same name but greater than the ship's latitude, the body's nearest approach will be some time after it has risen; but when the declination is of a contrary nature to the latitude, the body will be the nearest to the prime vertical at its rising and setting.
Wikidata
Prime vertical
In astronomy and astrology, the prime vertical is the vertical circle passing east and west through the zenith, and intersecting the horizon in its east and west points.
Dictionary of Nautical Terms
prime vertical
That great circle which passes through the zenith and the east and west points of the horizon.
Numerology
Chaldean Numerology
The numerical value of prime vertical in Chaldean Numerology is: 9
Pythagorean Numerology
The numerical value of prime vertical in Pythagorean Numerology is: 7
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"prime vertical." Definitions.net. STANDS4 LLC, 2024. Web. 24 Apr. 2024. <https://www.definitions.net/definition/prime+vertical>.
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