Tetsuwan Atom (1980) - episode 21 - 24 Feb, 1981

The luxury spaceliner Titan is struck by an asteroid. Astro and several others are the last to escape before it explodes. Their lifeboat malfunctions, but they are able to land on the moon, in a crater with an atmosphere. Astro discovers the wreck of a Russian spacecraft from 1990 whose female pilot survived for thirty years, building a robot, Ivan and discovering several large diamonds. The diamonds are meaningless until rescue, when one of the passengers, a ruthless man (Boon Marukubi), decides to take the diamonds. He finds them, but gets left behind. Ivan takes care of him. (Source: Wikipedia)