Data Table

Object
The radius of Orbit (AU)
Period (years)
Circumference of Orbit (AU)
Orbital Speed (AU/year)
Orbital Speed (miles/hour)
Mercury
0.387
0.24

Venus
0.723
.62

Earth
1.000 AU
1.000 yr
6.283 AU
6.283 AU/yr
66,627 mi/hr
Mars
1.52
1.88

Jupiter
5.2
11.86

Saturn
9.55
29.46

Uranus
19.2
84.01

Neptune
31.1
164.79

Pluto
39.529
248.54

Drawing Conclusions
Which celestial body takes the longest amount of time to travel once around its orbit?

Which celestial takes the shortest amount of time?

How does an increase in orbital radius affect average orbital speed?

I need help finding Circumference of Orbit (AU), Orbital Speed (AU/year), Orbital Speed (miles/hour)