(astronomy) the magnitude that a star would have if it were viewed from a distance of 10 parsecs (32.62 light years) from the earth
Used in the same subject area: Physics, Astrophysics.
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Fixed star
any star in the Ptolemaic theory of planetary motion
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(astronomy) the point in an orbit farthest from the body being orbited
Used in the same subject area: Physics, Astrophysics.(astronomy) the equinoctial point that lies in the constellation of Virgo
Used in the same subject area: Physics, Astrophysics.(astronomy) the common center of mass around which two or more bodies revolve
Used in the same subject area: Physics, Astrophysics.(astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with r…
Used in the same subject area: Physics, Astrophysics.(astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to…
Used in the same subject area: Physics, Astrophysics.(astronomy) Copernicus' astronomical model in which the Earth rotates around the sun
Used in the same subject area: Physics, Astrophysics.(astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is…
Used in the same subject area: Physics, Astrophysics.(astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with r…
Used in the same subject area: Physics, Astrophysics.(astronomy) a measure of time defined by Earth's orbital motion; terrestrial time is mean solar time corrected for the irregularities…
Used in the same subject area: Physics, Astrophysics.(astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic
Used in the same subject area: Physics, Astrophysics.(astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust; "‘extragalactic…
Used in the same subject area: Physics, Astrophysics.(astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the righ…
Used in the same subject area: Physics, Astrophysics.(astronomy) the generalization that the speed of recession of distant galaxies (the red shift) is proportional to their distance from…
Used in the same subject area: Physics, Astrophysics.(astronomy) the generalization that the speed of recession of distant galaxies (the red shift) is proportional to their distance from…
Used in the same subject area: Physics, Astrophysics.(astronomy) the angle between the plane of the orbit and the plane of the ecliptic stated in degrees
Used in the same subject area: Physics, Astrophysics.(astronomy) the angle between the plane of the orbit and the plane of the ecliptic stated in degrees
Used in the same subject area: Physics, Astrophysics.(astronomy) the alignment of the Earth and a planet on the same side of the sun
Used in the same subject area: Physics, Astrophysics.
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Words connected by meaning
Their definitions overlap or refer to similar ideas. Use these to widen your search, then compare the exact meanings.
A small periodical change of position in the stars and other heavenly bodies, due to the combined effect of the motion of light and th…
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.A red star of the first magnitude, situated in the eye of Taurus; the Bull's Eye. It is the bright star in the group called the Hyades.
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.That point in the orbit of a double star where the smaller star is farthest from its primary.
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.The near approach of one heavenly body to another, or to the meridian; a coming into conjunction; as, the appulse of the moon to a sta…
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.An optical property of some crystals which exhibit a star-shaped by reflected light, as star sapphire, or by transmitted light, as som…
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.(physics) a theory of atomic structure that combined Rutherford's model with the quantum theory; electrons orbiting a nucleus can only…
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.the original version of string theory, developed in the late 1960s.; "Although bosonic string theory has many attractive features, it…
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.A bitter American herb of the Bloodwort family, with the leaves all radical, and the small yellow or white flowers in a long spike (Al…
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.The morning star; the star which ushers in the day.
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.In the direction of the general planetary motion, or from west to east; in the order of the signs; not retrograde; -- said of the moti…
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.Sirius, a star of the constellation Canis Major, or the Greater Dog, and the brightest star in the heavens; -- called also Canicula, a…
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.In the Ptolemaic system, the supposed circular orbit of a planet about the earth, but with the earth not in its center.
Its definition shares important concepts with this word: star, ptolemaic, theory, planetary, motion.
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