Details of the Laws
How many AUs is Earth away from the sun?
1
Who did Kepler work for?
Tycho Brahe
What do all three of Keplers laws talk about?
How planets move
How many stars are in our solar system?
One - our sun <3
What is the formula for Keplers 3rd law?
a^3 = p^2
A being the Astronomical unit (distance from the sun)
p being the orbital period (how much time it takes to travel around the sun once)
What is an orbital period?
How long it takes to orbit he sun once
What did Kepler study?
space, stars and how planets move
What is Kepler's 1st law
1. Planets travle in an ellipse (oval)
2. We have a heliocentric model
3. the sun is one of the foci
How many planets are in our solar system?
8 (rip Pluto)
If you are given an a of 3.22AU what would be the orbital period?
3.22 (cube it)
33.3862 (find the square root of this)
p = 5.7780
What is the perihelion?
the location where the planet is closest to the sun
How did Kepler get a lot of the missing measurements he needed?
When Tycho died he inherited/found them
What is Kepler's 2nd law?
1. speed (planets move faster when they are closer to the sun)
2. equal area, equal time
Is Earth the only planet with a moon?
Nope!
If you are given an a of 9.12AU what would be the orbital period?
9.12 (cube this)
758.5505 (find the square root of this)
p = 27.5417
What is the aphelion?
the place where the planet is farthest from the sun
How did Tyco lose his nose?
duel over a math equation/disagreement with his cousin
What is Kepler's 3rd law?
The closer a planet is to the sun - the less time it will take to orbit around the sun.
The farther a planet is from the sun - the more time it will take to orbit the sun
**math a^3 = p^2
What is the other name for the four outer planets?
Gas giants
If you are given a p of 7.14 years what would be the astronomical units?
7.14 (square it)
50.9796 (find the cube root)
a = 3.7079 AU