Pluto. Asteroid, planet or comet?

AGMI · Post by **AGMI** » Mon Dec 06, 2004 11:27 am

Pluto is the smallest major planet in the solar system but mercury used to be considered the "real" size for a major planet (about 3000+km) And 1ceres is the largest size for an asteroid(680km?) But PLUTO lies In between(1400+km) so which side does it incline to;planet or asteroid?
or Mesoplanet?(meso in greek means intermediate)

Post by **VinSnr** » Mon Dec 06, 2004 11:35 am

AGMI wrote:Pluto is the smallest major planet in the solar system but mercury used to be considered the "real" size for a major planet (about 3000+km) And 1ceres is the largest size for an asteroid(680km?) But PLUTO lies In between(1400+km) so which side does it incline to;planet or asteroid?
or Mesoplanet?(meso in greek means intermediate)

Planet

AGMI · Post by **AGMI** » Mon Dec 06, 2004 11:37 am

How bout Sedna and Quaoar

gwenyi · Post by **gwenyi** » Mon Dec 06, 2004 12:56 pm

Well... there has always been a debate over these stuff.... but.. just follow what NASA announces. should be easier this way

AGMI · Post by **AGMI** » Mon Dec 06, 2004 1:16 pm

got this frm isaac asimov's book hehe

A 5 YeaR Old · Post by **A 5 YeaR Old** » Mon Dec 06, 2004 1:50 pm

AGMI wrote:mercury used to be considered the "real" size for a major planet

like what you said, mercury used to be the lower limit of planet size, now it's pluto.
As for Sedna, it's a planetoid and it will probably remain that way but if you guys remember, Channel 8's 10pm news called Sedna a planet, i think the misconception starts from here. Well, the IAU was pretty much silent on Sedna, isnt it?
As for Issac Asimov, i dunno about him, his books sounds as thought they are probably a cross between fiction and non-fiction, i am not sure about them cos i nvr read his books, correct me if i am wrong.

AGMI · Post by **AGMI** » Mon Dec 06, 2004 1:53 pm

isaac asimov writes both Fiction AND nonfiction and in thiscase its a Nonfiction book. Maybe the date it was wirtten in results in

mercury used to be the lower limit of planet size, now it's pluto.

the book was written in 1990.

Post by **VinSnr** » Mon Dec 06, 2004 3:06 pm

gwenyi wrote:Well... there has always been a debate over these stuff.... but.. just follow what NASA announces. should be easier this way

yeah.....NASA say what then what lor....

AGMI · Post by **AGMI** » Mon Dec 06, 2004 3:07 pm

Is ESA dumber than NASA?

Post by **VinSnr** » Mon Dec 06, 2004 4:04 pm

AGMI wrote:Is ESA dumber than NASA?

No...but they are all playing the same guessing game.

SingAstro

Pluto. Asteroid, planet or comet?

Pluto. Asteroid, planet or comet?

Re: Pluto. Asteroid, planet or comet?

Re: Pluto. Asteroid, planet or comet?