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A meteorite is about to ram into a planet. How long do the main characters have to leave the planet before they die?
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At the end of Book 6 of my book series, a magic ritual has caused a large meteorite (around 1/4 the size of the one that caused the chicxulub crater) to ram into the small planet (around the size of Earth's moon). However, the main characters are some time away from their ship when the meteorite hits. If the meteorite hits the opposite side of the planet, how long do these characters have to escape before they are swept away by the shockwave?
planets asteroids escape
asked 1 hour ago
The Weasel Sagas
50612
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up vote
2
down vote
favorite
At the end of Book 6 of my book series, a magic ritual has caused a large meteorite (around 1/4 the size of the one that caused the chicxulub crater) to ram into the small planet (around the size of Earth's moon). However, the main characters are some time away from their ship when the meteorite hits. If the meteorite hits the opposite side of the planet, how long do these characters have to escape before they are swept away by the shockwave?
planets asteroids escape
asked 1 hour ago
The Weasel Sagas
50612
I suspect this would be greatly affected by the relative velocity of the meteor and the planet...
– Qami
1 hour ago
@Qami Velocity is similar to the chicxulub asteroid.
– The Weasel Sagas
1 hour ago
Does this small planet has atmosphere and oceans like Earth? How far is your character from the ocean?
– Alexander
1 hour ago
1
So your main characters have a spaceship but never looked for incoming asteroids before landing on the planet. In the 1820s Biela's Com0nt was calculated to impact Earth in 4339 but it broke up sometime in 1842-1871. en.wikipedia.org/wiki/Biela%27s_Comethttps://en.wikipedia.org/… This shows that impacts can be predicted well in advance once the object is discovered.
– M. A. Golding
50 mins ago
1
@M.A.Golding : presumably the "magic ritual" that summoned the meteor wasn't as predictable ;)
– Qami
46 mins ago
add a comment |Â
up vote
2
down vote
favorite
up vote
2
down vote
favorite
At the end of Book 6 of my book series, a magic ritual has caused a large meteorite (around 1/4 the size of the one that caused the chicxulub crater) to ram into the small planet (around the size of Earth's moon). However, the main characters are some time away from their ship when the meteorite hits. If the meteorite hits the opposite side of the planet, how long do these characters have to escape before they are swept away by the shockwave?
planets asteroids escape
asked 1 hour ago
The Weasel Sagas
50612
At the end of Book 6 of my book series, a magic ritual has caused a large meteorite (around 1/4 the size of the one that caused the chicxulub crater) to ram into the small planet (around the size of Earth's moon). However, the main characters are some time away from their ship when the meteorite hits. If the meteorite hits the opposite side of the planet, how long do these characters have to escape before they are swept away by the shockwave?
planets asteroids escape
planets asteroids escape
asked 1 hour ago
The Weasel Sagas
50612
asked 1 hour ago
The Weasel Sagas
50612
asked 1 hour ago
The Weasel Sagas
50612
asked 1 hour ago
The Weasel Sagas
50612
asked 1 hour ago
The Weasel Sagas
50612
50612
I suspect this would be greatly affected by the relative velocity of the meteor and the planet...
– Qami
1 hour ago
@Qami Velocity is similar to the chicxulub asteroid.
– The Weasel Sagas
1 hour ago
Does this small planet has atmosphere and oceans like Earth? How far is your character from the ocean?
– Alexander
1 hour ago
1
So your main characters have a spaceship but never looked for incoming asteroids before landing on the planet. In the 1820s Biela's Com0nt was calculated to impact Earth in 4339 but it broke up sometime in 1842-1871. en.wikipedia.org/wiki/Biela%27s_Comethttps://en.wikipedia.org/… This shows that impacts can be predicted well in advance once the object is discovered.
– M. A. Golding
50 mins ago
1
@M.A.Golding : presumably the "magic ritual" that summoned the meteor wasn't as predictable ;)
– Qami
46 mins ago
add a comment |Â
I suspect this would be greatly affected by the relative velocity of the meteor and the planet...
– Qami
1 hour ago
@Qami Velocity is similar to the chicxulub asteroid.
– The Weasel Sagas
1 hour ago
Does this small planet has atmosphere and oceans like Earth? How far is your character from the ocean?
– Alexander
1 hour ago
1
So your main characters have a spaceship but never looked for incoming asteroids before landing on the planet. In the 1820s Biela's Com0nt was calculated to impact Earth in 4339 but it broke up sometime in 1842-1871. en.wikipedia.org/wiki/Biela%27s_Comethttps://en.wikipedia.org/… This shows that impacts can be predicted well in advance once the object is discovered.
– M. A. Golding
50 mins ago
1
@M.A.Golding : presumably the "magic ritual" that summoned the meteor wasn't as predictable ;)
– Qami
46 mins ago
I suspect this would be greatly affected by the relative velocity of the meteor and the planet...
– Qami
1 hour ago
I suspect this would be greatly affected by the relative velocity of the meteor and the planet...
– Qami
1 hour ago
@Qami Velocity is similar to the chicxulub asteroid.
– The Weasel Sagas
1 hour ago
@Qami Velocity is similar to the chicxulub asteroid.
– The Weasel Sagas
1 hour ago
Does this small planet has atmosphere and oceans like Earth? How far is your character from the ocean?
– Alexander
1 hour ago
Does this small planet has atmosphere and oceans like Earth? How far is your character from the ocean?
– Alexander
1 hour ago
1
1
So your main characters have a spaceship but never looked for incoming asteroids before landing on the planet. In the 1820s Biela's Com0nt was calculated to impact Earth in 4339 but it broke up sometime in 1842-1871. en.wikipedia.org/wiki/Biela%27s_Comethttps://en.wikipedia.org/… This shows that impacts can be predicted well in advance once the object is discovered.
– M. A. Golding
50 mins ago
So your main characters have a spaceship but never looked for incoming asteroids before landing on the planet. In the 1820s Biela's Com0nt was calculated to impact Earth in 4339 but it broke up sometime in 1842-1871. en.wikipedia.org/wiki/Biela%27s_Comethttps://en.wikipedia.org/… This shows that impacts can be predicted well in advance once the object is discovered.
– M. A. Golding
50 mins ago
1
1
@M.A.Golding : presumably the "magic ritual" that summoned the meteor wasn't as predictable ;)
– Qami
46 mins ago
@M.A.Golding : presumably the "magic ritual" that summoned the meteor wasn't as predictable ;)
– Qami
46 mins ago
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
7
down vote
Rough estimation: the shock wave is basically a seismic wave.
The fastest seismic wave (P wave) travel at about 5.5 km/s in granite. Considering that the diameter of the Moon is about 3500 km, and assuming that the propagation of the seismic wave goes along the shortest path and with uniform velocity, we have about 636 seconds, or 10 minutes, before the shock wave reaches the other end of the body.
answered 54 mins ago
L.Dutch♦
62.4k18145292
1
That's a good estimate for when the things will get messy. But seismic wave may not be sufficient to kill the main character.
– Alexander
10 mins ago
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
7
down vote
Rough estimation: the shock wave is basically a seismic wave.
The fastest seismic wave (P wave) travel at about 5.5 km/s in granite. Considering that the diameter of the Moon is about 3500 km, and assuming that the propagation of the seismic wave goes along the shortest path and with uniform velocity, we have about 636 seconds, or 10 minutes, before the shock wave reaches the other end of the body.
answered 54 mins ago
L.Dutch♦
62.4k18145292
1
That's a good estimate for when the things will get messy. But seismic wave may not be sufficient to kill the main character.
– Alexander
10 mins ago
add a comment |Â
up vote
7
down vote
Rough estimation: the shock wave is basically a seismic wave.
The fastest seismic wave (P wave) travel at about 5.5 km/s in granite. Considering that the diameter of the Moon is about 3500 km, and assuming that the propagation of the seismic wave goes along the shortest path and with uniform velocity, we have about 636 seconds, or 10 minutes, before the shock wave reaches the other end of the body.
answered 54 mins ago
L.Dutch♦
62.4k18145292
1
That's a good estimate for when the things will get messy. But seismic wave may not be sufficient to kill the main character.
– Alexander
10 mins ago
add a comment |Â
up vote
7
down vote
up vote
7
down vote
Rough estimation: the shock wave is basically a seismic wave.
The fastest seismic wave (P wave) travel at about 5.5 km/s in granite. Considering that the diameter of the Moon is about 3500 km, and assuming that the propagation of the seismic wave goes along the shortest path and with uniform velocity, we have about 636 seconds, or 10 minutes, before the shock wave reaches the other end of the body.
answered 54 mins ago
L.Dutch♦
62.4k18145292
Rough estimation: the shock wave is basically a seismic wave.
The fastest seismic wave (P wave) travel at about 5.5 km/s in granite. Considering that the diameter of the Moon is about 3500 km, and assuming that the propagation of the seismic wave goes along the shortest path and with uniform velocity, we have about 636 seconds, or 10 minutes, before the shock wave reaches the other end of the body.
answered 54 mins ago
L.Dutch♦
62.4k18145292
answered 54 mins ago
L.Dutch♦
62.4k18145292
answered 54 mins ago
L.Dutch♦
62.4k18145292
answered 54 mins ago
L.Dutch♦
62.4k18145292
62.4k18145292
1
That's a good estimate for when the things will get messy. But seismic wave may not be sufficient to kill the main character.
– Alexander
10 mins ago
add a comment |Â
1
That's a good estimate for when the things will get messy. But seismic wave may not be sufficient to kill the main character.
– Alexander
10 mins ago
1
1
That's a good estimate for when the things will get messy. But seismic wave may not be sufficient to kill the main character.
– Alexander
10 mins ago
That's a good estimate for when the things will get messy. But seismic wave may not be sufficient to kill the main character.
– Alexander
10 mins ago
add a comment |Â
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I suspect this would be greatly affected by the relative velocity of the meteor and the planet...
– Qami
1 hour ago
@Qami Velocity is similar to the chicxulub asteroid.
– The Weasel Sagas
1 hour ago
Does this small planet has atmosphere and oceans like Earth? How far is your character from the ocean?
– Alexander
1 hour ago
1
So your main characters have a spaceship but never looked for incoming asteroids before landing on the planet. In the 1820s Biela's Com0nt was calculated to impact Earth in 4339 but it broke up sometime in 1842-1871. en.wikipedia.org/wiki/Biela%27s_Comethttps://en.wikipedia.org/… This shows that impacts can be predicted well in advance once the object is discovered.
– M. A. Golding
50 mins ago
1
@M.A.Golding : presumably the "magic ritual" that summoned the meteor wasn't as predictable ;)
– Qami
46 mins ago