Discovery of Eris

Eris is the most massive and second-largest-known dwarf planet in the Solar System. It is a trans-Neptunian object (TNO) in the scattered disk and has a high-eccentricity orbit. Eris was discovered in January 2005 by a Palomar Observatory–based team led by Mike Brown and verified later that year.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Which happened first?

• Discovery of Eris and Discovery of moscovium happened in the same year
• Discovery of Eris and Discovery of Sedna happened in the same year
• Discovery of Eris and Discovery of (136108) Haumea happened in the same year
• Discovery of Eris happened 1 year after Discovery of oganesson
• Discovery of Eris happened 1 year before Discovery of 120347 Salacia

Timeline

1. Discovery of oganessonJune 2002
2. Discovery of (136108) HaumeaMarch 7, 2003
3. Discovery of Eris (this page)October 21, 2003
4. Discovery of moscoviumAugust 2003
5. Discovery of SednaNovember 14, 2003
6. Discovery of 120347 SalaciaSeptember 22, 2004

Related

• Discovery of hydrogen1766
• Discovery of oxygen1774
• Discovery of PlutoFebruary 18, 1930
• Discovery of carbon1789
• Discovery of aluminium1825
• Discovery of heliumAugust 18, 1868
• Discovery of nitrogen1772
• Discovery of sulfur1777