19521 Chaos
Encyclopedia
19521 Chaos (ˈ), is a cubewano
, a Kuiper-belt object
not in resonance
with any planet. It is a likely dwarf planet
. Chaos was discovered in 1998 by the Deep Ecliptic Survey
, with Kitt Peak's
4 m telescope. Assuming it has an albedo of 0.09, the absolute magnitude (H) of 4.9 would make it about 460 km in diameter. It is named after the primeval state of existence
in Greek mythology
, from which the first gods appeared.
Cubewano
A classical Kuiper belt object, also called a cubewano is a low-eccentricity Kuiper belt object that orbits beyond Neptune and is not controlled by an orbital resonance with Neptune. Cubewanos have orbits with semi-major axes in the 40–50 AU range and, unlike Pluto, do not cross Neptune’s orbit...
, a Kuiper-belt object
Kuiper belt
The Kuiper belt , sometimes called the Edgeworth–Kuiper belt, is a region of the Solar System beyond the planets extending from the orbit of Neptune to approximately 50 AU from the Sun. It is similar to the asteroid belt, although it is far larger—20 times as wide and 20 to 200 times as massive...
not in resonance
Orbital resonance
In celestial mechanics, an orbital resonance occurs when two orbiting bodies exert a regular, periodic gravitational influence on each other, usually due to their orbital periods being related by a ratio of two small integers. Orbital resonances greatly enhance the mutual gravitational influence of...
with any planet. It is a likely dwarf planet
Dwarf planet
A dwarf planet, as defined by the International Astronomical Union , is a celestial body orbiting the Sun that is massive enough to be spherical as a result of its own gravity but has not cleared its neighboring region of planetesimals and is not a satellite...
. Chaos was discovered in 1998 by the Deep Ecliptic Survey
Deep Ecliptic Survey
The Deep Ecliptic Survey is a project to find Kuiper belt objects , using the facilities of the National Optical Astronomy Observatory .The principal investigator is Bob Millis....
, with Kitt Peak's
Kitt Peak National Observatory
The Kitt Peak National Observatory is a United States astronomical observatory located on 2,096 m Kitt Peak of the Quinlan Mountains in the Arizona-Sonoran Desert on the Tohono O'odham Nation, southwest of Tucson...
4 m telescope. Assuming it has an albedo of 0.09, the absolute magnitude (H) of 4.9 would make it about 460 km in diameter. It is named after the primeval state of existence
Chaos (cosmogony)
Chaos refers to the formless or void state preceding the creation of the universe or cosmos in the Greek creation myths, more specifically the initial "gap" created by the original separation of heaven and earth....
in Greek mythology
Greek mythology
Greek mythology is the body of myths and legends belonging to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices. They were a part of religion in ancient Greece...
, from which the first gods appeared.
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris