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REPORT ABUSIVE REPLY
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Message Subject
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Asteroid 2012 DA14 is getting bigger and bigger. WTF?
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Poster Handle
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Dr. Astro |
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Post Content
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Are you saying that it is important to place it in proportion to the earth? For example a 1,000,000,000 kg asteroid (~240m I think someone said) looks scary compared to 100,000,000 kg (maybe under 40m??), when really in proportion to the Earth that asteroid is 1.67e-17 compared to 1.67e-16 of size. Which basically means a nano size increase in the gravity effects from Earth? Is this right?
Quoting: Anonymous Coward 29759371 Increased mass of the asteroid does not mean increased gravity effects from earth. If it were a significant portion of earth's mass or more, then the mutual attraction between the two objects would matter, instead of just the attraction the asteroid feels from earth. In other words, the effect of earth being pulled toward the asteroid by the asteroid's gravity would make the pass closer, but seeing as how the mass of asteroids like this are too small to matter you can ignore the mass of the asteroid.
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