× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
k
4
c
4
M
3
t
3
i
3
B
3
k
3
m
3
c
3
o
3
l
3
r
3
Home Q & A Board Science-Related Homework Help Physics
New Topic  
gagen gagen
wrote...
Posts: 1
Rep: 0 0
10 years ago
Find the planet's nearest orbital distance from its star?
A newly discovered planet orbits a distant star with the same mass as the Sun at an average distance of 128 million kilometers. Its orbital eccentricity is 0.5.
Read 6944 times
1 Reply

Related Topics

Replies
wrote...
#1
10 years ago
Quote
A newly discovered planet orbits a distant star with the same mass as the Sun at an average distance of 128 million kilometers. Its orbital eccentricity is 0.5.

Answer

Quote
(a+p)= 2 x average distance
a+p= 128 x 2
a+p= 256 million kilometers
a-p= eccentricity x 2 x average distance
a-p= .5 x 2 x 128
a-p= 128 million kilometers
make it a 2 step equation:
128 + 2perihelion= 256
subtract 128 from both sides:
2perhelion= 128
divide each side by 2:
perihelion=64 million kilometers
aphelion= 256 - 64
aphelion= 192 million kilometers
check the answer by doing (a-p) / (a+p) the answer should be .5
(192-64) / (192+64)= .5
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  698 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 291
  
 287
  
 299
Your Opinion
Who's your favorite biologist?
Votes: 587
Previous poll results: Do you trust social media networks with protecting your privacy?