Scientists discovered a distant body orbiting the sun in October of 2003. It is the
largest object found in orbit around the sun since the discovery of Neptune in
1846. In 2006, it was given the official name Eris. Which of the following
observations would provide the BEST evidence to support that Eris is not a star?
A
B
C
D
It has mass, density, and a circumference that can be estimated.
Its light, which has been observed, is reflected from the sun.
It is found in the Milky Way Galaxy, which includes only our solar system.
Its brightness can be used to help calculate its size and temperature.