How many orbits of the Sun (sidereal periods) has Neptune completed since its discovery? (See Table 7-1, Universe, 11th ed. (in the text).)
A)just more than 1
B)fewer than 1
C)about 147
D)more than 2

Question

Quizplus · Accepted Answer

Neptune was discovered in 1846, and its sidereal period is about 165 years. Since it has been less than 165 years since its discovery, Neptune has completed fewer than one orbit around the Sun.

How Many Orbits of the Sun (Sidereal Periods) Has Neptune