Cochise College-Physicsweb
Physics Educational Resources
Roger Weller,
geology instructor
wellerr@cochise.edu
copyright
2009-R.Weller edited 11/3/09
Basic Astronomy Data-2
Gravity Effects
gravitational field strength (g) due to Earth
distance in AU
acceleration
1 AU
177.17 x 10-10 m/s2
4 AU
11.07 x 10-10 m/s2
16 AU
0.692 x 10-10 m/s2
64 AU
0.0433 x 10-10 m/s2
88.7 AU
0.0225 x 10-10 m/s2
gravitational field strength (g) due to Sun
distance in AU
acceleration
1 AU
5.93 x 10-10 m/s2
4 AU
3.71 x 10-10 m/s2
16 AU
2.32 x 10-10 m/s2
64 AU
1.45 x 10-10 m/s2
89.7 AU
0.737 x 10-10 m/s2
escape velocity from Earth's
gravitational field
distance in km
escape velocity
100
11.09 km/sec
1,000
10.39 km/sec
10,000
6.98 km/sec
100,000
2.74 km/sec
1,000,000
0.890 km/sec
10,000,000
0.283 km/sec
1.5 x 108 (1 AU) 72.0
m/sec
4.5 x 108 (3 AU)
42.1 m/sec
escape velocity from Sun's
gravitational field
distance in AU
escape velocity
1 AU
42.119 km/sec
4 AU
21.06 km/sec
16 AU
10.53 km/sec
64 AU
5.266 km/sec
89.7 AU
4.448 km/sec
1 AU is approximately 1.5 x 108 km
Pioneer 10 data
December 2005
speed 12.51 km/s
location 89.7 AU
mass- 260 kg
anomalous acceleration towards the sun- 8.74 +/- 1.33 x
10-10 m/s2