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Unfortunately, not many. We can accurately measure its location and orbit, by watching the object for several months or years. We can make a good guess of its size, based on the brightness, since we know the distance pretty accurately. We can calculate the composition of the surface based on the spectrum of light that we see.
A couple of things that are very difficult to determine from here are the mass and density of the object. We can calculate these very accurately if the asteroid has a satellite, or if we send a space probe there to orbit the object. We've done that only for a very few asteroids.
What else can I help you with?
Can an asteroid destroy the earth?
No, an asteroid cannot destroy earth, but a large enough asteroid can have devastating effects on the life on Earth
How fast did the Yucatan asteroid travel?
The Yucatan asteroid is estimated to have been traveling at a speed of about 20 kilometers per second (45,000 miles per hour) when it struck the Earth approximately 66 million years ago. This impact is believed to have led to widespread devastation, including the extinction of the dinosaurs.
The earth been destroyed by a asteroid?
No, if the Earth was destroyed by an asteroid we would not be living today.
Is the earth inside the asteroid belt?
Yes, the asteroid belt starts properly after the orbit of Mars.
Is the the moon part of the earth or an asteroid?
Theory suggests that it is a remnant of a large asteroid that struck the Earth
What kind asteroid properties can be measured from the Earth?
you can measure its distance, size, shape, and composition from the Earth.
What are two interesting properties of francium?
- francium is extremely radioactive- the total quantity of francium on the Earth is approx. 30 g- the chemical and physical properties of francium are only estimated, not measured
How does path of the asteroid compare to the path the earth travels?
It doesn't. In an estimated 23 years, a belt of asteroids will collide with the earth.
Can an asteroid destroy the earth?
No, an asteroid cannot destroy earth, but a large enough asteroid can have devastating effects on the life on Earth
What is the distance between earth and a asteroid?
A more specific question is required. There are an estimated 700,000 to 1.7 million asteroids more than 1 km in diameter in the asteroid belt between Mars and Jupiter alone. Obviously, their distances from Earth are quite varied.
How fast did the Yucatan asteroid travel?
The Yucatan asteroid is estimated to have been traveling at a speed of about 20 kilometers per second (45,000 miles per hour) when it struck the Earth approximately 66 million years ago. This impact is believed to have led to widespread devastation, including the extinction of the dinosaurs.
The earth been destroyed by a asteroid?
No, if the Earth was destroyed by an asteroid we would not be living today.
Is the earth inside the asteroid belt?
Yes, the asteroid belt starts properly after the orbit of Mars.
Is a collision possible between the earth and an asteroid?
Yes, if the asteroid is captured by the Earth's gravitational pull.
Will an asteroid will hit Earth this week?
Probably not. I haven't seen any news about an asteroid about to strike Earth.
Is the the moon part of the earth or an asteroid?
Theory suggests that it is a remnant of a large asteroid that struck the Earth
Why do asteriods hit earth?
yes.from http://www.space.com/spacewatch/081008-asteroid-exploded.html...The asteroid was about the size of kitchen table, astronomers estimated, and they think the explosion (caused by the pressures of slamming into the atmosphere)
