This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: • What is the mass of the planet? Step 2: Volume In addition to the radial velocity measurements made above, you also observe the planet making transits across the star. These transits last for 2.5 hours and, at the point of greatest eclipse, block out 1% of the light from the star. Time From Center of Transit (minutes) 60 120-60-120 Relative Flux 0.995 0.990 1.000 • Assuming that the radius of the star is the same as that of the Sun (7 × 10 8 m), what is the radius of the planet ? • What is the volume of the planet? Step 3: Density • What is the density of the planet? • How does that density compare to that of water (1000 kg/m 3 )? • What does this density tell you about the composition of the planet? BONUS: How could you have Fgured out the star’s radius if that information were omitted from the problem?...
View Full Document
- Spring '08
- Mass, Planet, Astronomical unit