The diagram below is a plot of an asteroid's reflected brightness versus its ultraviolet minus visual color (U-V color; redder to the right and gray to the left). In this diagram, which of the asteroids is most likely an S-type asteroid?
A) Object 1
B) Object 2
C) Object 3
D) Object 4
E) Object 5

Question

The diagram below is a plot of an asteroid's reflected brightness versus its ultraviolet minus visual color (U-V color; redder to the right and gray to the left). In this diagram, which of the asteroids is most likely an S-type asteroid? 
A) Object 1 
B) Object 2 
C) Object 3 
D) Object 4 
E) Object 5

Quizplus · Accepted Answer

S-type asteroids typically have a U-V color of around -0.1, which puts them in the middle of the plot. Object 3 is the only asteroid in the middle of the plot, making it the most likely to be an S-type asteroid.

The Diagram Below Is a Plot of an Asteroid's Reflected