Answer by James K for Asteroid apparent magnitude
That's a big asteroid!Recent discoveries of objects of this size are rare, one example was 2013UQ4. We believe that all objects of this size in the main asteroid belt have been discovered. (The...
View ArticleAsteroid apparent magnitude
I'm writing an SF story in which a main belt asteroid is diverted into a collision course trajectory with earth (long story), and unknown to us here on earth. Its H magnitude is 12. As it nears earth,...
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