jueves, 2 de agosto de 2007

Another Jupiter moon?

If you look at the picture you see a fifth dot which you could wrongly classify as a fifth moon. So if it is not a moon, what is it?

The fifth dot is Omega Ophiuchus, a star 45 times more luminous by the sun but at 186 light years and because of that distance it only has magnitude 4.

The reason why you see it passing is because Jupiter passes. In awhile the 5th dot will be elsewhere.