2006-06-26 07:03:41 · 4 answers · asked by pam k 1 in Science & Mathematics ➔ Astronomy & Space
Which one? They're not all the same you know.
Let's say 400,000 years for safe
OK ok,
r = 30 trillion miles
C = 2πr
Orbit length = 188.5 trillion miles
Pluto orbits at something like 2 km/sec which translates to 5369 mph. Let's divide that by 4 for silly [Outer objects travel slower than inner objects]. That's 1342 mph. Dividing...
140,461,997 hours. 16,023 earth years.
2006-06-26 07:07:00 · answer #1 · answered by bequalming 5 · 0⤊ 0⤋
The Oort cloud is a spherical cloud of comets situated about 50,000 AU's to 100,000 AU's with one AU being the distance from Earth to the Sun. The Ooort cloud has an orbital velocity of only 2.7m per second and it's orbital period is variable due to the difference in distance from the Sun.
2006-07-02 18:34:52 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The Oort cloud is around 50,000 to 100,000 AU from the Sun. Kepler's third law says the square of the period is proportional to the cube of the distance. So the period should be between 11 million and 32 million years. That's moving very slowly - 35 to 50 miles per YEAR.
2006-06-26 15:28:25 · answer #3 · answered by injanier 7 · 0⤊ 0⤋
The orbital period depends on how far it is out.
Since the Oort cloud out past Pluto and covers a large area so I will use Pluto as a bench mark.
Pluto's orbital period is 248.5 earth Years and travels about 17100 Kilimeters per hour or about 10600 mph
Contrast Earth goes about 66600 mph
Any farther out would go slower.
2006-06-26 14:27:18 · answer #4 · answered by georgephysics13 3 · 0⤊ 0⤋