write code that completes the celestialbody class. each celestialbody instance has an integer orbitlength (in days) and a integer dayssincediscovered attribute (which is initially 0). using these, write the orbit(int numberoftimes) method that adds numberoftimes * orbitlength to dayssincediscovered (e.g., if planet x has done two orbits with an orbit length of 12 days, it was discovered 24 days ago. if it then orbits another three times, it was discovered 60 days ago). also, fix the two errors in the class.
