ENOUGH gravity to PULL its own mass into a round shape.To be in orbit AROUND the Sun. The full moon of April, called the PINK Moon. The smaller distance between Earth and the full moon makes the supermoon appear about 7% larger than, the average full moon and 14% larger than a full moon at apogee or its farthest distance from Earth also known as a minimoon. A supermoon also appears up to 30% brighter than a full moon at apogee.