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n. The point of a body's elliptical orbit about the system's centre of mass where the distance between the body and the centre of mass is at its minimum.

n. (astronomy) the point in an orbit closest to the body being orbited

"For mean anomaly, I found that 359.4 degrees works well enough periapsis, which is perihelion, is ~in mid 2012; it is "among" the outer planets by approx 1992."

celestial point   

perihelion    perigee    perijove    perilune    periselene   

5-mile    drought-fueled    vectoring    thirty-yard    fifty-mile