If the Sun is on a circular orbit around the center of the Galaxy, calculate how long it will take for Sun...?

Question

to complete one orbit. If the Sun is 5 billion years old, calculate how many orbits the Sun has made around the Galaxy. Compare this number to the number of orbits the Earth has made around the Sun in the same amount of time.

Answer 1

the galactic year is about 250,000,000 years. so the sun has made about 20 complete orbits.

Answer 2

Its in its 20 or 21st orbit.

But you can't calculate it if you don't know any orbital characteristics.

(I hope you don't want me to tell you the number of orbits the Earth has made in 5 billion years ! ... btw 4.6 billion not 5)

Answer 3

If the Sun is not an object captured by the galaxy or some unusual force has changed its orbit, the Sun has completed 20-25 orbits around the galaxy.

You ask: "Compare this number to the number of orbits the Earth has made around the Sun in the same amount of time".  This is difficult to know because for the 5 billion year, we do not know the size of the Earth and its orbit around the Sun.

Answer 4

We don't even know where the centre of the Galaxy is! how did you know?

Answer 5

You haven't asked the thing what you didn't know, why then you want all of us to calculate on all the things WHICH you have so simplified in the way you had imagined!

It is incorrect to assume and presume the billions of years complex phenomenal change in the orbit, velocity of the Galaxy, the Sun and the Earth to be LINEAR and make a direct calculation like 2x5=10 ! If you assume the path as circle and if the time of one cycle is assumed finding the number of time of cycle completed is the first standard maths! Why you ask?