The best in arts & entertainment, news, pop culture, and your mom since 2002.

[Total: 11    Average: 3.1/5]
21 Comments - View/Add
Hits: 4055
Rating: 3.1
Category: Science
Date: 08/19/13 01:33 PM

21 Responses to Cruithne

  1. Profile photo of Gerry1of1
    Gerry1of1 Male 50-59
    36679 posts
    August 19, 2013 at 1:33 pm
    Link: Cruithne - How many moons do you think the Earth has? Are you sure?
  2. Profile photo of drawman61
    drawman61 Male 50-59
    7740 posts
    August 19, 2013 at 1:44 pm
    I see none of you dare mock the wonderful Stephen Fry and his moon story.
  3. Profile photo of ryguy639
    ryguy639 Male 18-29
    4 posts
    August 19, 2013 at 2:01 pm
    Cruithne does not actually orbit Earth and therefore would not be considered a moon.
    http://en.wikipedia.org/wiki/3753_Cruithne
  4. Profile photo of djwajda
    djwajda Male 40-49
    885 posts
    August 19, 2013 at 2:06 pm
    As-ter-oid


    [quote">Cruithne is an asteroid in orbit around the Sun in 1:1 orbital resonance with the Earth. It is a minor planet in solar orbit that, relative to Earth, orbits in a bean-shaped orbit that ultimately effectively describes a horseshoe, and which can transition into a quasi-satellite orbit.[3"> It has been incorrectly called "Earth`s second moon".[2"> Cruithne does not orbit Earth and at times it is on the other side of the Sun.[4"> Its orbit takes it inside the orbit of Mercury and outside the orbit of Mars.[4"> Cruithne orbits the Sun in about 1 year but it takes 770 years for the series to complete a horseshoe-shaped movement around the Earth.[/quote">
  5. Profile photo of djwajda
    djwajda Male 40-49
    885 posts
    August 19, 2013 at 2:06 pm
    So yes, I do mock the wonderful Stephen Fry in that his information was false.
  6. Profile photo of Kain1
    Kain1 Male 18-29
    1473 posts
    August 19, 2013 at 2:13 pm
    It`s NOT a moon. It orbits the sun, not the earth. All you have to do to find that out is to go to wikipedia.

    *sigh*
  7. Profile photo of Kain1
    Kain1 Male 18-29
    1473 posts
    August 19, 2013 at 2:14 pm
    oh, i see i`m too late.. oh well, no matter..
  8. Profile photo of richanddead
    richanddead Male 18-29
    3489 posts
    August 19, 2013 at 2:21 pm
    Cruithne is call earth`s second moon but it is how you determine what is a moon. Earth actually has thousands of satellite rocks ranging from a pebbles to those a couple of miles across. We also have "temporary moons," such as RH120. It`s who is calling a satellite object a moon. Sometimes "the Moon" is not called a moon either, and it is said that Earth and "the Moon" are binary planets with no moons.
  9. Profile photo of enolamron
    enolamron Male 18-29
    197 posts
    August 19, 2013 at 2:38 pm
    Ah, but this information was corrected in a later episode of QI. He`s not wrong if he corrects himself! :)
  10. Profile photo of Jake_Justus
    Jake_Justus Male 50-59
    7033 posts
    August 19, 2013 at 2:47 pm

    A simple rule of thumb : it`s not technically a moon if it doesn`t generate werewolf transformations ...

  11. Profile photo of patchouly
    patchouly Male 40-49
    4746 posts
    August 19, 2013 at 3:53 pm
    I was going to mention that orbiting the Sun means it`s not Earth`s moon but I can see that others beat me to it.
  12. Profile photo of Draculya
    Draculya Male 40-49
    14625 posts
    August 19, 2013 at 9:31 pm
    Not a moon. Quasi moon. Not even in earth orbit. Not the most interesting such quasi moon. Not even one of the natural temporary satellites sometimes in earth orbit.
  13. Profile photo of 5Cats
    5Cats Male 50-59
    32823 posts
    August 19, 2013 at 9:40 pm
    There are several "objects" which orbit the Earth aside from the Moon (Luna).

    Some only stay a little while and then zoom back into space. All are VERY small.

    I see @richanddead has mentioned this. :-)

    Wiki Says: Cruithne
    It is in orbit of BOTH the Sun and the Earth:



    Because the Earth`s gravity affects it`s rotation around the Sun in a big way.
  14. Profile photo of Gerry1of1
    Gerry1of1 Male 50-59
    36679 posts
    August 19, 2013 at 10:22 pm


  15. Profile photo of Draculya
    Draculya Male 40-49
    14625 posts
    August 20, 2013 at 12:22 am
    @5Cats "It is in orbit of BOTH the Sun and the Earth"

    Nope. It is not in orbit around the earth. In fact it will not come close enough to be measurably affected by earth`s gravity until a brief series of orbits around the year 2292.

    That`s no moon.


  16. Profile photo of Vimto
    Vimto Male 40-49
    2853 posts
    August 20, 2013 at 2:08 am
    If i remember correctly this was all sorted out in a later series.
  17. Profile photo of taylor_stone
    taylor_stone Male 30-39
    2688 posts
    August 20, 2013 at 3:54 am
    In a later episode, the same question is asked, and Alan (whom is the only one of the 4 panelists that is in every episode) says 2 and is given the buzzer again because Cruithne was later found to NOT be a true moon.
  18. Profile photo of Gerry1of1
    Gerry1of1 Male 50-59
    36679 posts
    August 20, 2013 at 6:07 am

    Next you guys will be saying Pluto is not a planet.
  19. Profile photo of Wendypants
    Wendypants Female 30-39
    2420 posts
    August 20, 2013 at 9:47 am
    I love QI... it`s so much fun watching Alan Davies freak out when his answers are deemed incorrect when they were supposed to be truths from earlier shows. :)
  20. Profile photo of Gerry1of1
    Gerry1of1 Male 50-59
    36679 posts
    August 20, 2013 at 10:52 am

    For Alan Davies the answer is always "blue whale"
  21. Profile photo of 5Cats
    5Cats Male 50-59
    32823 posts
    August 20, 2013 at 3:11 pm
    @Gerry1: That graphic is what Cruithne`s orbit "looks like from Earth" and not it`s actual path...
    I have bad news about Pluto...

    @Draculya: Yeah, you`re right. And I also think Cruithne is WAY too small to be considered a "moon".

Leave a Reply