Note on Ceres
Dr. Jerry Galloway
Hi all...
There's a new pic of Ceres (from the asteroid belt between Mars & Jupiter) floating around the Internet because a NASA craft is close-by. It's using the news headline:
"NASA's Dawn spacecraft releases new images of dwarf planet Ceres"
So, it is called a Dwarf Planet. Since this is VERY small compared to planets - about 14% the diameter of Mars - it has, in the past, sometimes been called an asteroid. Now just about anything smaller than Mercury might be called a Dwarf Planet. Still, the pics are cool.
So, to add some perspective on this, I'd refer y'all to a paper I published a few years back. It's not too long and should be a simple read for everyone:
http://jerrygalloway.com/astro/docs/Pluto_PPR.pdf
Dr. J.
_________________________________________
To communicate with the group...
send email to: obser...@googlegroups.com
Director: Dr. Jerry Galloway
-------------------------------------------------------------------
To stop JROC club emails or withdraw from club,
just send email notice to as...@jerrygalloway.com
Jim White
Good paper.
I would also note that as far as I can tell as bodies orbiting other stars are being discovered they are all being refered to as "planets". That's true regardless of their size or orbit. Of course all so far discovered have been large due to current limits of our detection methods but some odd and very elliptical orbits have been found out there.
Double standard . . .
Jim
--
------------------------------------------------------
See: www.jerrygalloway.com/astro/
------------------------------------------------------
You received this message because you are subscribed to the Google Groups "Jacqueline Rose Observatory" group.
To post to this group, send email to obser...@googlegroups.com
To unsubscribe from this group, send email to observatory...@googlegroups.com
For more options, visit this group at http://groups.google.com/group/observatory?hl=en
---
You received this message because you are subscribed to the Google Groups "Jacqueline Rose Observatory" group.
To unsubscribe from this group and stop receiving emails from it, send an email to observatory...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
