The point in the orbit of an object (such as a satellite) orbiting the earth that is at the greatest distance from the centre of the earth is known as:

Correct option is C

The correct answer is (c) apogee.

• In orbital mechanics, the term apogee refers to the point in the orbit of an object orbiting Earth where it is farthest from the Earth's centre.
•  This term is commonly used in the context of satellites and other artificial bodies orbiting the Earth.
  
• Apogee is specifically related to orbits around Earth, where the object reaches its maximum distance from the planet.
• The opposite point, where the object is closest to Earth, is called the perigee.

Additional Information:

• For satellites orbiting the Earth, knowing the apogee and perigee helps in calculating the satellite’s orbital period and speed.
• Satellites move slower at apogee due to the weaker gravitational pull and faster at perigee due to stronger gravitational influence.

Other Options:

• Aphelion: This is the point in the orbit of a planet or object orbiting the Sun where it is farthest from the Sun. For Earth, the aphelion occurs around early July.
• Perigee: Perigee is the point in the orbit of an object orbiting Earth where it is closest to Earth. It is the opposite of apogee.
• Perihelion: Perihelion is the point in the orbit of an object around the Sun where it is closest to the Sun. For Earth, this occurs around early January.