1. what astronomical unit of length do these numbers represent? a.1*10^13 km b.

ID: 113097 • Letter: 1

Question

1. what astronomical unit of length do these numbers represent?

a.1*10^13 km

b. 1.5*10^8 km

c. 3.26 ly

2. what is the distance from earth to the Sun in kilometers?

3. If an object is halfway up in the sky(between the horizon & zenith) and it is due west, what is its Altitude and Azimuth?

4. If a celestial object is 39AU away, how many kilometers is that( in scientific notation)?

5.Looking from outer space, down on the North Pole, which way does the Moon revolve around the Earth?

6. From the same point of view, which way is the Earth revolving around the sun?

7. What is the declination and right ascension of the sun on september 21st?

Ans-1- the astronomical unit used are as follows

(A) these numbers have km in end so they are representative of distance from a planet up to a satellite and the unit used is km that is kilometers.

(B) the numbers have km in end which is a representative of distance between a planet and a satellite and the unit used is km or kilometers.

(C) the numbers have ly in end which is representative of distance between a planet and a star and the unit used is ly or light year.

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