2007-03-18 01:25:47 · 12 answers · asked by Kees L 1 in Science & Mathematics ➔ Astronomy & Space
At its Congress in Prague in August 2006 the International Astronomical Union (IAU) demoted Pluto to a dwarf planet and promoted Eris and Ceres to share that status with it. Sedna does not (as yet) share that status.
As I understand it, another dozen objects. Sedna amongst them, are on a short-list the IAU is considering for dwarf planet status, pending further investigation of the objects and their orbits and possibly further definition of the words "planet" and "dwarf planet": the necessity to be spherical would rule out Sedna and 10 Hygiea for example. Size may be given more importance than shape, so as to include them, possibly,
Which begs the question of further classification of smaller objects.
As of March 3, 2007, from a total of 368,650 registered minor planets, 152,554 have orbits known well enough to be given permanent official Minor Planet Centre numbers. Of these, 13,627 have official names.
If there is now a Premiership and a Championship division of planethood, ir would seem logical to expect a League One and League Two to follow. But the IAU probably feel they have their hands full, with 5000 or so new asteroids being discovered every month just to keep pace with the burgeoning numbers.
2007-03-18 05:16:51 · answer #1 · answered by Anonymous · 0⤊ 0⤋
There are no longer any new planets extra to our photograph voltaic device. We nonetheless have the previous 8: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. The final replace to the style of our planets became made in 2006 whilst the IAU (international Astronomer Union) demoted Pluto, Ceres, and Eris to dwarf planets. Then in 2008, the reclassified them as plutoids. A plutoid is a sub-classification of a dwarf planet, particular to our photograph voltaic device. the latest plutoid has been Makemake (stated "mackeh macheh")... it had already been got here across, we've been merely waiting for it to be first rate. The IAU has to make it an first rate classification.
2016-12-18 16:42:05 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Well I ate so much yesterday for St. Pats day that objects seem to be falling towards my stomach. I may have become my own planet. Heck my little sister follows me around all over the place. I actually may just be a planet now. So I guess the new one is named Brandon.
B
2007-03-18 02:22:35 · answer #3 · answered by Bacchus 5 · 0⤊ 0⤋
"Pluto-less"? Just joking - our solar system now has only eight planets since Pluto was demoted to a planetoid or dwarf planet. The other planetoids are called Eris and Sedna.
2007-03-18 01:31:02 · answer #4 · answered by Larry H 3 · 0⤊ 0⤋
There you have it. The most recently discovered "planet" of the eight in our solar system turns out to be Neptune...
2007-03-18 06:51:04 · answer #5 · answered by Anonymous · 0⤊ 0⤋
It's called Eris and is technically a dwarf planet. The discovery named Sedna was deemed not to be a planet but rather an asteroid. You can find more info at the links below:
http://www.iau.org/iau0605_Eris.409.0.html
http://www.gps.caltech.edu/~mbrown/planetlila/index.html
http://www.iau.org/NAMING_PLANETS_AND_SEDNA.239.0.html
2007-03-18 01:46:01 · answer #6 · answered by Just Me Alone 6 · 0⤊ 0⤋
It's a new dwarf planet, not planet. It's official name is Eris and its moon Dysnomia. It has been called Xena and it's number is 2003 UB313.
2007-03-18 06:41:24 · answer #7 · answered by chase 3 · 0⤊ 0⤋
"Eris"; a dwarf planet. WAY out beyond Pluto.
2007-03-18 01:29:20 · answer #8 · answered by stargazergurl22 4 · 0⤊ 0⤋
If they decide it qualifies as a planet it will be called Sedna
2007-03-18 01:29:00 · answer #9 · answered by kinvadave 5 · 1⤊ 1⤋
Eris.
2007-03-18 01:29:01 · answer #10 · answered by Joel S 3 · 0⤊ 0⤋