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Guy Wells

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Posts posted by Guy Wells

  1. 5 hours ago, cloudsweeper said:

    I knew that asteroids were not confined to a belt between Mars and Jupiter, but only recently learned that Jupiter has two large groups of asteroids which are co-orbital with it, following its orbit at about 60 degrees either side of the planet.  They are called Trojans and Greeks, and cluster about the so-called Lagrangian Points.  Not only that, but there is another group of Jovian asteroids called Hildas - yes, Hildas - which form an equilateral triangle with the Trojans and Greeks at two of its apexes.  

    Now what I didn't know until yesterday is that other planets also have a few Trojans, in particular Earth, whose Trojan is called 2010 TK.

    I apologise if you good folk already know about this and I've been a bit slow to catch up!

    Source? - the excellent book Calculating The Cosmos, by Prof. Ian Stewart, first published 2016.  Highly recommended.



    Hi Doug.

    Slight correction:

    2010 TK is an Apollo type near-Earth asteroid.

    2010 TK7 is an Aten type near-Earth asteroid, and Earth trojan

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