It has the same mass as when it is here on earth. The mass of an object do not change when it is in space, or in orbit.
The circling of the spacecraft around the moon is called its lunar orbit.
The force that causes a spacecraft to orbit the Moon is gravity. Gravity is the force of attraction between two objects with mass, like the Moon and the spacecraft, which keeps the spacecraft in orbit around the Moon.
Orbit
A spacecraft that stays in orbit around a planet or moon is called a planetary orbiter. They are designed to study the surface, atmosphere, and environment of the celestial body they are orbiting.
The first manned spacecraft to orbit the moon was Apollo 8, which launched on December 21, 1968. It was the second manned mission in the Apollo program and made ten orbits around the moon before returning safely to Earth.
Apollo 11
The mass in orbit around another mass is referred to as a satellite. This can be a natural satellite, like a moon, or an artificial satellite, like a spacecraft. The gravitational pull of the larger mass keeps the satellite in orbit, balancing the gravitational force with the satellite's velocity. The specific characteristics of the orbit, such as its shape and altitude, depend on the masses involved and the initial conditions of the satellite's motion.
The first US spacecraft to enter into an orbit around a planet other than the moon was Mariner 2, which orbited Venus in 1962.
The Chang'e 1 was sent to orbit around the Moon. It was launched in October of 2007.
Frank Borman, James Lovell, and William Anders were the first people to orbit the moon in the Apollo 8 spacecraft.
Orbit has the following two meanings:the curved path of a celestial object or spacecraft around a star, planet, or moon. (noun)move in orbit around a star, planet or moon. (verb)
Apollo 8 was the first spacecraft to orbit the moon.