
When I was young I used to star gaze (I Spy the Night Sky or some similar book) until I got a crick in my neck!
However, it's DH's hobby more than mine so I ask him if I need any info - or not, unless I want to get dragged outside and get another crick in my neck!
A dwarf planet is a planetary-mass object that is neither a true planet nor a natural satellite. That is, it is in direct orbit of a star, and is massive enough for its gravity to compress it into a hydrostatically equilibrious shape, but has not cleared the neighborhood of other material around its orbit.
Hope that helps Maggiemaybe - all my own words of course 