Orbital Properties and Mercury's Orbit

Front

What method has been used to measure the distance between Earth and the Moon to an accuracy of a few centimeters?

Back

Lasers

Front

Viewed from Earth, which planet is never far from the Sun?

Back

Mercury

Front

What is the closest distance (perihelion) of Mercury from the Sun?

Back

0.32 AU

Front

What is the angle between Mercury and the Sun as seen from Earth?

Back

28°

Front

What is the radius of the Moon?

Back

1700 km

Front

What is the radius of Mercury?

Back

2439 km

Front

What is the radius of Earth?

Back

6380 km

Front

What is the mass of the Moon?

Back

7.3 × 10^22 kg

Front

What is the mass of Mercury?

Back

3.3 × 10^23 kg

Front

What is the mass of Earth?

Back