Exoplanets!
Name __________________________________________________
1. Sketch your light curve on the grid below.
2. What is the normal light level you detect from your star?
(This is when your planet is not blocking any light)
3. What is the reduced light level, when your planet is in front of your star?
4. How often is there a dip in your star’s light, in seconds?
5. a) What percentage of the normal light level, is the reduced light level?
b) Therefore, what percentage of the star’s light is blocked by your planet?
B=
Exoplanets!
6. a) To make your results more realistic, multiply your time for one orbit
(from question 4) by 100 days (e.g. 0.8 seconds becomes 80 days).
b) Now write this in Earth years.
T=
7. Calculate D, the distance of your planet from its star (in AU).
8. Calculate r, the radius of your planet (in km).
R =radius of the star
Assume your star is identical to the Sun.
Sun’s radius = 700,000 km
𝑻𝟐 = 𝑫𝟑
Write the equation here: