celestial body

DEFINITIONS OF: celestial body

1

n natural objects visible in the sky

Synonyms:
heavenly body
Examples:
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Aldebaran
the brightest star in Taurus
Algol
the second brightest star in Perseus; the first known eclipsing binary
Alpha Centauri
brightest star in Centaurus; second nearest star to the sun
Alpha Crucis
the brightest star in the Southern Cross
Altair
double star 15.7 light years from Earth; the brightest star in the Aquila constellation
Antares
the brightest star in Scorpius
Apollo asteroid
an asteroid whose orbit crosses the Earth's orbit
Arcturus
the 4th brightest star and the brightest star in the constellation Bootes; 36 light-years from Earth
Beta Centauri
the second brightest star in Centaurus
Beta Crucis
the second brightest star in the Southern Cross
Alpha Orionis
the second brightest star in Orion
Callisto
the second largest of Jupiter's satellites
Canopus
supergiant star 650 light years from Earth; second brightest star in the sky
Capella
the brightest star in Auriga
Alpha Geminorum
a multiple star with 6 components; second brightest in Gemini; close to Pollux
Ceres
the largest asteroid and the first discovered
Crab Nebula
a remnant of a supernova detected first in 1054 AD
Deimos
the outer of two small satellites of Mars
Deneb
the brightest star in Cygnus
Denebola
a star in Leo approximately 43 light years from Earth
Earth
the 3rd planet from the sun; the planet we live on
Epsilon Aurigae
the largest known star
Europa
the 4th largest of Jupiter's satellites; covered with a smooth shell of frozen water
evening star
a planet (usually Venus) seen at sunset in the western sky
Ganymede
the largest of Jupiter's satellites
Io
the closest of Jupiter's moons; has active volcanoes
Jupiter
the largest planet and the 5th from the sun; has many satellites and is one of the brightest objects in the night sky
Red Planet
a small reddish planet that is the 4th from the sun and is periodically visible to the naked eye; minerals rich in iron cover its surface and are responsible for its characteristic color
Mercury
the smallest planet and the nearest to the sun
Moon
the natural satellite of the Earth
Neptune
a giant planet with a ring of ice particles; the 8th planet from the sun is the most remote of the gas giants
Pallas
a large asteroid; the second asteroid to be discovered
Phobos
the larger of the two satellites of Mars
Pluto
a small planet and the farthest known planet from the sun; it has the most elliptical orbit of all the planets
North Star
the brightest star in Ursa Minor; at the end of the handle of the Little Dipper; the northern axis of the earth points toward it
Pollux
the brightest star in Gemini; close to Castor
Procyon
the brightest star in Canis Minor
Proxima Centauri
the nearest star to the sun; distance: 4.3 light years
Quaoar
a planetoid discovered in 2002
Regulus
the brightest star in Leo
Beta Orionis
the brightest star in Orion
Saturn
a giant planet that is surrounded by three planar concentric rings of ice particles; the 6th planet from the sun
Sedna
a planetoid of rock and ice about three-quarters the size of Pluto discovered in 2003; the most distant object known to orbit around the sun
Canicula
the brightest star in the sky; in Canis Major
Spica
the brightest star in Virgo
Asterope
one of the stars in the star cluster Pleiades
Sun
the star that is the source of light and heat for the planets in the solar system
Titan
the largest of the satellites of Saturn; has a hazy nitrogen atmosphere
Triton
the largest moon of Neptune
Uranus
a giant planet with a ring of ice particles; the 7th planet from the sun has a blue-green color and many satellites
Vega
the brightest star in the constellation Lyra
Venus
the second nearest planet to the sun; it is peculiar in that its rotation is slow and retrograde (in the opposite sense of the Earth and all other planets except Uranus); it is visible from Earth as an early `morning star' or an `evening star'
Vesta
the brightest asteroid but the fourth to be discovered
Types:
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minor planet, planetoid
any of numerous small celestial bodies that move around the sun
major planet, planet
(astronomy) any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected light; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto in order of their proximity to the sun; viewed from the constellation Hercules, all the planets rotate around the sun in a counterclockwise direction
planet
any celestial body (other than comets or satellites) that revolves around a star
planetesimal
one of many small solid celestial bodies thought to have existed at an early stage in the development of the solar system
primary
(astronomy) a celestial body (especially a star) relative to other objects in orbit around it
quasar, quasi-stellar radio source
a starlike object that may send out radio waves and other forms of energy; many have large red shifts
satellite
any celestial body orbiting around a planet or star
star
(astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior
star
any celestial body visible (as a point of light) from the Earth at night
asteroid
any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
binary, binary star, double star
a system of two stars that revolve around each other under their mutual gravitation
fixed star
any star in the Ptolemaic theory of planetary motion
Galilean, Galilean satellite
one of the four satellites of Jupiter that were discovered by Galileo
giant, giant star
a very bright star of large diameter and low density (relative to the Sun)
inferior planet
any of the planets whose orbit lies inside the earth's orbit
Jovian planet, gas giant
any of the four outermost planets in the solar system; much larger than Earth and gaseous in nature (like Jupiter)
KBO, Kuiper belt object
any of many minor planets in the Kuiper belt outside the orbit of Neptune at the edge of the solar system
loadstar, lodestar
guiding star; a star that is used as a reference point in navigation or astronomy
moon
any natural satellite of a planet
Lucifer, Phosphorus, daystar, morning star
a planet (usually Venus) seen just before sunrise in the eastern sky
multiple star
a system of three or more stars associated by gravity
neutron star
a star that has collapsed under its own gravity; it is composed of neutrons
nova
a star that ejects some of its material in the form of a cloud and become more luminous in the process
outer planet
(astronomy) a major planet whose orbit is outside the asteroid belt (Jupiter, Saturn, Uranus, Neptune, Pluto)
red dwarf, red dwarf star
a small, old, relatively cool star; approximately 100 times the mass of Jupiter
red giant, red giant star
a large, old, luminous star; has a relatively low surface temperature and a diameter large relative to the sun
starlet
a small star
sun
any star around which a planetary system revolves
supergiant
an extremely bright star of very large diameter and low density
superior planet
any of the planets whose orbit lies outside the earth's orbit
supernova
a star that explodes and becomes extremely luminous in the process
terrestrial planet
a planet having a compact rocky surface like the Earth's; the four innermost planets in the solar system
variable, variable star
a star that varies noticeably in brightness
white dwarf, white dwarf star
a faint star of enormous density
Type of:
natural object
an object occurring naturally; not made by man
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