File:Eris_and_moon_Dysnomia_JWST_NIRCam.jpg · Wikimedia Commons · See Wikimedia Commons

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Éris

Also known as Sol k, Eris (dwarf planet), Xena, 136199 Eris

planeta anão no Sistema Solar

OverviewAI-generated

Eris is a trans-Neptunian object and plutoid in the scattered disc. It orbits the Sun with a period of 557.55 years, an eccentricity of 0.43883, and an inclination of 44.1444 degrees. Its orbit has a periapsis of 38.013 and an apparent magnitude of 18.7. The object has a radius of 1163 and an albedo of 0.96.

Eris was discovered on 2003-10-21 at Palomar Observatory by Michael E. Brown, Chadwick Trujillo, and David L. Rabinowitz. It was provisionally designated 2003 UB313. The body has a mass of 16.6 and is accompanied by its child astronomical body, Dysnomia.

Synthesized by Vinony from 26 facts across 3 sources: Wikidata, NASA, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Picture of the Day · NASA

Pathfinder on Mars

2026-07-04

On July 4th, 1997, using its own array of fireworks, a parachute, and a cocoon of airbags, the Mars Pathfinder spacecraft bounced like a giant beach ball at least 15 times before it came to rest on the surface of Mars at 10:07 AM Pacific Daylight Time. After its then novel airbag-assisted landing sequence was completed, Pathfinder transmitted this color mosaic to mission operators on Earth. In the scene from another world, the Mars Sojourner robot rover is visible in the foreground, crouched on top of the unfolded Pathfinder. About the size of a large house cat, the six-wheeled, solar-powered Sojourner became the first successful Martian rover. Surrounding Pathfinder are deflated airbags and the rock-strewn terrain of the Ares Vallis floodplain. In the distance Martian hills appear against a dusty brownish sky. The Pathfinder lander was subsequently renamed the Carl Sagan Memorial Station.

via NASA APOD

Small body data

(136199) Eris

Orbit class: Outer (Centaur/TNO)
Semi-major axis: 67.935 AU
Eccentricity: 0.438
Inclination: 43.926 °
Absolute magnitude: -1.260 H

via Minor Planet Center

Wikidata facts

Instance of: astronomical object
Part of: scattered disc
Named after: Eris
Official name: 136199 Eris
Area: 17000000
Location: Solar System
Parent body: Sun
Child body: Dysnomia
Minor-planet group: plutoid
Diameter: 2326
Radius: 1163
Mass: 16.6
Orbital period: 557.55
Image: Eris and dysnomia.jpg

Show 28 more facts

discoverer or inventor: David L. Rabinowitz
Commons category: 136199 Eris
site of astronomical discovery: Palomar Observatory
time of discovery or invention: 2003-10-21
provisional designation: 2003 UB313
topic's main category: Category:Eris (dwarf planet)
orbital eccentricity: 0.4346554671925892
orbital inclination: 44.1444
longitude of ascending node: 35.9045
argument of periapsis: 151.6871
albedo: 0.96
apparent magnitude: 18.7
mean anomaly: 205.384
periapsis: 38.013
semi-major axis of an orbit: 67.740
apoapsis: 97.468
density: 2.52
periapsis date (DEPRECATED): 2258-10-14
absolute magnitude: -1.1
rotation period: 25.9
angular diameter: 34.3
temperature: 55
name: Xena
Unicode character: ⯰
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
IPA transcription: ˈeːʁɪs
surface gravity: 0.82
epoch: May 5, 2025

Sources (10)

via Wikidata · CC0

Article · Português

Éris ou 136199 Eris (designação de planeta menor, símbolo: ) é um planeta anão plutoide situado nos confins do sistema solar, em uma distância de 97 UA do Sol, em seu afélio, em uma região conhecida como disco disperso. Quando foi descoberto, ficou desde logo informalmente conhecido como o "décimo planeta", porque na época seu diâmetro estimado era maior do que o diâmetro do planeta-anão Plutão. Éris tem um período orbital de cerca de 560 anos e encontra-se a cerca de 97 UA do Sol, em seu afélio. Como Plutão, a sua órbita é bastante excêntrica, e leva o planeta a uma distância de apenas 35 UA do Sol no seu periélio (a distância de Plutão ao Sol varia entre 29 e 49,5 UA, enquanto que a órbita de Neptuno fica por cerca de 30 UA). Em 2010, resultados preliminares de uma ocultação estelar por Éris em 6 de novembro estabeleceram um limite de 2 320 km no diâmetro de Éris, deixando-o com praticamente o mesmo diâmetro de Plutão. No entanto, com a aproximação da sonda New Horizons deste último em 13 de julho de 2015, resultando em novos e mais precisos cálculos de seu diâmetro, provou-se, definitivamente, ser Plutão maior que Éris.

Abstract from DBpedia / Wikipedia · CC BY-SA