Are Asteroids Outside Our Solar System and the Moon Affected by Impact Tsunamis?

[mersecske]

Are there any observations or estimations about asteorids outside our solar system?

 

[Vagn]

Are there any observations or estimations about asteorids outside our solar system?

There's no direct observations of minor bodies outside our Solar System, in fact we haven't directly observed anything in the Oort Cloud in situ they are simply too faint to be resolved even by Hubble. The closest object we have imaged is probably Formalhaut b, which is a planet of about 3 Jupiter masses orbiting its star at about 115AU, with the dust from which it is forming is still visible around the star.
http://www.nasa.gov/mission_pages/hubble/science/fomalhaut.html
[PLAIN]http://spacespin.org/images/articles/81131-hubble-directly-observes-planet_3.jpg

 

[mersecske]

Maybe an asteroid belt can be detected.

 

[Drakkith]

Maybe an asteroid belt can be detected.

We have already observed debris fields around other stars. I have no doubt that there are many many many asteroids and other objects in our galaxy around probably every star there is.

 

[Chronos]

There are saganesque quantities [billions and billions] of bodies in the Oort cloud. This may even include some mars-size bodies. The primordial mass from which the sun formed was pretty enormous. The total mass of the Oort cloud may rival that of the sun. Detection is a separate issue. The vast majority, as already noted, are far too dim to be observed.

 

[pergradus]

There are saganesque quantities [billions and billions] of bodies in the Oort cloud. This may even include some mars-size bodies. The primordial mass from which the sun formed was pretty enormous. The total mass of the Oort cloud may rival that of the sun. Detection is a separate issue. The vast majority, as already noted, are far too dim to be observed.

Hmm really? where do people get an estimate like that from?

 

[mersecske]

And what about the Moon?

For example there is a formula for the Earth in the paper:

Steven N. Ward & Erik Asphaug:
Asteroid Impact Tsunami: A probability Hazard Assessment

see section. 4

equation (28) & (29) with the given a, b parameters below and figure 10.

This formula is good for the moon scaling with its area?