central-meridian transit

central-meridian transit

[′sen·trəl mə′rid·ē·ən ′tranz·ət]
(astronomy)
The passage of an object on the surface of a planet across the central meridian.
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Its origin can be traced back to 1989 as the DOS program ZMPP by Hans-Jorg Mettig, used to time central-meridian transits of Jupiter's Great Red Spot.
Also posted there is a full list of phenomena of Jupiter's moons and predictions for central-meridian transits of Jupiter's Great Red Spot.
While drawings are useful, timings of the central-meridian transits of Jovian features are the most scientifically valuable data an amateur can produce.
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