IPB

Welcome Guest ( Log In | Register )

5 Pages V   1 2 3 > »   
Reply to this topicStart new topic
Plutoids: a new class of objects beyond Neptune, Astronomy, politics or damage control
Classification of Pluto
You cannot see the results of the poll until you have voted. Please login and cast your vote to see the results of this poll.
Total Votes: 79
Guests cannot vote 
dmuller
post Jun 12 2008, 09:44 AM
Post #1


Member
***

Group: Members
Posts: 332
Joined: 11-April 08
From: Sydney, Australia
Member No.: 4093



Article on the BBC website: 'Non-planet' Pluto gets new class
http://news.bbc.co.uk/2/hi/science/nature/7449735.stm
QUOTE
Now an IAU committee, meeting in Oslo, has suggested that small, nearly spherical objects orbiting beyond Neptune should carry the "plutoid" tag.

It also goes on to say that not everybody is too excited about it:
QUOTE
"It's just some people in a smoke-filled room who dreamed it up," he told the Associated Press. "Plutoids or haemorrhoids, whatever they call it. This is irrelevant."



--------------------
Go to the top of the page
 
+Quote Post
akuo
post Jun 12 2008, 09:51 AM
Post #2


Member
***

Group: Members
Posts: 436
Joined: 24-March 04
From: Finland
Member No.: 63



While classified as a plutoid, Pluto is still a dwarf planet, as the IAU release says:
"The International Astronomical Union has decided on the term plutoid as a name for dwarf planets like Pluto at a meeting of its Executive Committee in Oslo."


--------------------
Antti Kuosmanen
Go to the top of the page
 
+Quote Post
David
post Jun 12 2008, 12:36 PM
Post #3


Member
***

Group: Members
Posts: 809
Joined: 11-March 04
Member No.: 56



Plutoid, wow. That must have taken a lot of thought.

Maybe now they can get back to dealing with their backlog of nameless Jovian moons.
Go to the top of the page
 
+Quote Post
hendric
post Jun 12 2008, 01:49 PM
Post #4


Director of Galilean Photography
***

Group: Members
Posts: 713
Joined: 15-July 04
From: Austin, TX
Member No.: 93



Jovoids?

*ba-dump dump ching*



--------------------
Space Enthusiast Richard Hendricks
--
"The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke
Mother Nature is the final inspector of all quality.
Go to the top of the page
 
+Quote Post
ngunn
post Jun 12 2008, 02:11 PM
Post #5


Senior Member
****

Group: Members
Posts: 3167
Joined: 4-November 05
From: North Wales
Member No.: 542



Ganymoids?
Go to the top of the page
 
+Quote Post
hendric
post Jun 12 2008, 02:18 PM
Post #6


Director of Galilean Photography
***

Group: Members
Posts: 713
Joined: 15-July 04
From: Austin, TX
Member No.: 93



Galleoids?

Does that make ring particles saturnoids, or ringoids? smile.gif


--------------------
Space Enthusiast Richard Hendricks
--
"The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke
Mother Nature is the final inspector of all quality.
Go to the top of the page
 
+Quote Post
climber
post Jun 12 2008, 03:14 PM
Post #7


Senior Member
****

Group: Members
Posts: 2627
Joined: 14-February 06
From: Very close to the Pyrénées Mountains (France)
Member No.: 682



If they rotate in 24h40 minutes, they'll be Solenoïdes then.


--------------------
Go to the top of the page
 
+Quote Post
Decepticon
post Jun 12 2008, 07:13 PM
Post #8


Senior Member
****

Group: Members
Posts: 1158
Joined: 25-November 04
Member No.: 114



LOL laugh.gif
Go to the top of the page
 
+Quote Post
laurele
post Jun 12 2008, 09:55 PM
Post #9


Junior Member
**

Group: Members
Posts: 38
Joined: 26-September 06
From: New Jersey, USA
Member No.: 1183



They actually are considering calling Ceres a "ceroid" (and the only one of that category), which sounds way too much like "steroids."
Go to the top of the page
 
+Quote Post
volcanopele
post Jun 12 2008, 10:44 PM
Post #10


Senior Member
****

Group: Moderator
Posts: 2864
Joined: 11-February 04
From: Tucson, AZ
Member No.: 23



I propose Ioids, terrestrial bodies with silicate volcanism from the last 2 billion years. Current members include Io, Earth, Mars, and Venus.


--------------------
&@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io
Go to the top of the page
 
+Quote Post
hendric
post Jun 13 2008, 02:22 AM
Post #11


Director of Galilean Photography
***

Group: Members
Posts: 713
Joined: 15-July 04
From: Austin, TX
Member No.: 93



Duh, we're missing the most obvious one:

Earthoids!

And of course

Flaming Jupiteroids (for hot jupiters)


--------------------
Space Enthusiast Richard Hendricks
--
"The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke
Mother Nature is the final inspector of all quality.
Go to the top of the page
 
+Quote Post
Greg Hullender
post Jun 13 2008, 03:29 AM
Post #12


Senior Member
****

Group: Members
Posts: 1010
Joined: 29-November 05
From: Seattle, WA, USA
Member No.: 590



QUOTE (hendric @ Jun 12 2008, 07:18 AM) *
Galleoids?

Does that make ring particles saturnoids, or ringoids? smile.gif


Well, if they're around Uranus, they're just called Klingons.

--Greg (testing to see if I can get the whole thread deleted) :-)
Go to the top of the page
 
+Quote Post
mchan
post Jun 13 2008, 04:22 AM
Post #13


Member
***

Group: Members
Posts: 593
Joined: 26-August 05
Member No.: 476



The ones there are classed as hemorrhoids. ph34r.gif
Go to the top of the page
 
+Quote Post
Stephen
post Jun 13 2008, 04:26 AM
Post #14


Member
***

Group: Members
Posts: 307
Joined: 16-March 05
Member No.: 198



A space.com article on the issues gives a few quotable comments from Alan Stern and others.
http://www.space.com/scienceastronomy/0806...uto-planet.html

Stern: "The derision for this group [the IAU] is now spreading virally".

Mark V. Sykes, director of the Planetary Science Institute: "The IAU is embracing a 19th-century world view, back before we had spacecraft, landers, orbiting telescopes and other modern means of understanding the physical characteristics of objects."

Expect more ructions later in the year. According to the article: "Scientists will take the whole debate up at a meeting Aug. 14-16 at Johns Hopkins University Applied Physics Laboratory. There, meeting co-organizer Hal Weaver said nobody will vote, but researchers will 'address this question in terms of a scientific conference'."

======
Stephen
Go to the top of the page
 
+Quote Post
nprev
post Jun 13 2008, 04:54 AM
Post #15


Senior Member
****

Group: Moderator
Posts: 7097
Joined: 8-December 05
From: Los Angeles
Member No.: 602



Oh, God....here we go again. sad.gif ...time to get out the Advil.

Let me just restate what seems to me at least to be the correct perspective. Natural objects exist along a continuum. Conversely, people tend to categorize things, and get upset when a given object doesn't seem to fit neatly into one category or another.

The ONLY top-level objects in the Universe that are apparently discrete, distinct, and identical to each other are hadrons & leptons; everything else is kinda fuzzy, somewhere in-between. (I do not expand that definition to include atoms because of isotopes; the exception that proves the rule is the chemical behavior of deuterium & tritium, which differs from that of basic hydrogen in many fundamental ways.)

Therefore, the term 'planet', undoubtedly like most of our terminology for probably all nouns, is subjective. Fomenting long, bitter debates over what does and what does not "deserve" this term doesn't serve any practical purpose at all, and frankly might become a seriocomic, rather embarrassing spectacle in the eyes of the general public...who well might be wondering why all these PhDs making the mythical big bucks are wasting time on the issue.

Pluto is a/an [insert opinion here]. Fine. Just insert an opinion, and then leave it alone.


--------------------
A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
Go to the top of the page
 
+Quote Post

5 Pages V   1 2 3 > » 
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 31st October 2014 - 03:03 PM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here.