The Point in a Lunar Orbit Nearest the Surface of the Moon

question 9

Short Answer

The point in a lunar orbit nearest the surface of the moon is called perilune and the point farthest from the surface is called apolune. The Apollo 11 spacecraft was placed in an elliptical lunar orbit with perilune altitude $106 \mathrm {~km}$ and apolune altitude $318 \mathrm {~km}$ (above the moon). Find an equation of this ellipse if the radius of the moon is $1728 \mathrm {~km}$ and the center of the moon is at one focus.

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Definitions:

Need Hierarchy

A theory in psychology proposing that people are motivated to fulfill basic needs before moving on to other, more advanced needs.

Job Satisfaction

A measure of how content an individual is with their job; it can influence productivity and employee retention.

Social Comparison

The process by which individuals evaluate their own abilities, achievements, and situations by comparing themselves to others.

McClelland's Learned Needs

A theory that suggests that human needs for achievement, affiliation, and power are acquired through life experiences.