IAU names dwarf planet Eris

Sep 14, 2006

The International Astronomical Union announces the names Eris for the dwarf planet provisionally named 2003 UB 313 and Dysnomia for its moon.

Thedwarf planet formerly known as 2003 UB 313 received the official designation (136199) Eris, or Eris in short, from the International Astronomical Union on 13 th September 2006. The name was accepted almost unanimously by the Working Group for Planetary System Nomenclature (WGPSN) and the Committee for Small Body Nomenclature (CSBN).

Eris is the second dwarf planet in a sub category of objects of which Pluto is the prototype. The name Eris was proposed by one of the discoverers, Michael Brown ( Caltech, USA). Eris was discovered on 5 th January 2005 by M. E. Brown, C. A. Trujillo, and D. Rabinowitz at the Palomar Observatory.

Eris is a the Greek goddess of discord and strife. She stirs up jealousy and envy to cause fighting and anger among men. At the wedding of Peleus and Thetis, the parents of the Greek hero Achilles, all the gods with the exception of Eris were invited, and, enraged at her exclusion, she spitefully caused a quarrel among the goddesses that led to the Trojan war.

Eris’ moon, formerly known as S/2005 (2003 UB 313) 1 and now known technically as Eris I, has been named Dysnomia. Dysnomia is the Daimon spirit of lawlessness. She is the daughter of Eris, goddess of chaos and strife, and the counterpart to Eunomia who puts an end to the anger of grievous strife. The name Dysnomia was accepted unanimously by the members of the WGPSN. The name was proposed by Mike Brown, a member of the discovery team.

The new designations have been approved by the IAU Division III Organizing Committee and by the IAU Officers.

Source: INTERNATIONAL ASTRONOMICAL UNION

Explore further: Mysteries of space dust revealed

add to favorites email to friend print save as pdf

Related Stories

How many planets are in the solar system?

May 28, 2013

I'm just going to warn you, this is a controversial topic. Some people get pretty grumpy when you ask: how many planets are in the Solar System? Is it eight, ten, or more?

Astronomers Measured Mass of Largest Dwarf Planet

Jun 18, 2007

Aptly named after the Greek goddess of conflict, the icy dwarf planet, Eris, has rattled the general model of our solar system. The object was discovered by astronomer Mike Brown of Caltech in the outer reaches ...

Pluto Isn't Even Largest Dwarf Planet

Jun 14, 2007

Die-hard Pluto fans still seeking redemption for their demoted planet have cause for despair this week. New data shows that the dwarf planet Eris is 27 percent more massive than Pluto, thereby strengthening the decree last ...

Recommended for you

Mysteries of space dust revealed

18 hours ago

The first analysis of space dust collected by a special collector onboard NASA's Stardust mission and sent back to Earth for study in 2006 suggests the tiny specks open a door to studying the origins of the ...

A guide to the 2014 Neptune opposition season

23 hours ago

Never seen Neptune? Now is a good time to try, as the outermost ice giant world reaches opposition this weekend at 14:00 Universal Time (UT) or 10:00 AM EDT on Friday, August 29th. This means that the distant ...

Informing NASA's Asteroid Initiative: A citizen forum

Aug 28, 2014

In its history, the Earth has been repeatedly struck by asteroids, large chunks of rock from space that can cause considerable damage in a collision. Can we—or should we—try to protect Earth from potentially ...

Image: Rosetta's comet looms

Aug 28, 2014

Wow! Rosetta is getting ever-closer to its target comet by the day. This navigation camera shot from Aug. 23 shows that the spacecraft is so close to Comet 67P/Churyumov-Gerasimenko that it's difficult to ...

User comments : 0