💡 Words with a Similar Meaning to "Proper motion"
Found via reverse dictionary — words that share a conceptual meaning.
| Word | Definition |
|---|---|
| lationnoun | (astrology, obsolete) Motion of a celestial object from one place to another; local motion. |
| angular motionnoun | Motion regarded as measured by the increase of the angle made with some standard direction by a line drawn from the moving object to a fixed point. |
| aberration of lightnoun | (astronomy) A phenomenon that produces an apparent motion of celestial objects about their true positions, dependent on the velocity of the observer. |
| mean anomalynoun | (astronomy, celestial mechanics) An orbital parameter of a celestial body (in an elliptic orbit); the mean motion multiplied by the time since the last passage through periapsis; the angle PCM (measured in radians) defined by P = the periapsis, C = the center of the elliptical orbit, and M = the mean planet. |
| retrograde motionnoun | (astronomy) Motion of a body (either real or apparent) in a direction opposite to that of its normal motion, or to that of other similar or related bodies |
| aberrationnoun | The act of wandering; deviation from truth, moral rectitude; abnormal; divergence from the straight, correct, proper, normal, or from the natural state. |
| diurnal motionnoun | (astronomy) The apparent westward rotation of the celestial sphere, along with the apparent westward revolution of celestial objects, around the celestial poles due to prograde (eastward) rotation of planet Earth relative to the seemingly fixed stars – completed once each sidereal day (about 23 hours, 56 minutes, 4 seconds). |
| movementnoun | Physical motion between points in space. |
| motion parallaxnoun | (photography, optics) The illusion of higher speed travel of a foreground object moving, when it is closer to the observer/camera, than when it is further away. |
| planetary aberrationnoun | (astronomy) A deviation of where a planet appears to be, due to the motion of the planet during the time that the light reaches the Earth. |
| radial velocitynoun | Motion of an object toward or away from an observer. |
| parallax motionnoun | (photography, optics) The apparent motion of a tracking-locked foreground object against a background, when the camera is moving across the environment. (ie. A stationary object will appear to move across a background, when a moving camera is locked to track it) |
| oppositionnoun | The action of opposing or of being in conflict. |
| aspectnoun | Any specific feature, part, or element of something. |
| midmotionnoun | A point in time during motion. |
| ephemerisnoun | (astronomy, nautical) A table giving the apparent position of celestial bodies throughout the year; normally given as right ascension and declination. |
| annual aberrationnoun | (astronomy) A deviation due to the Earth's orbital motion. |
| variationnoun | The act of varying; a partial change in the form, position, state, or qualities of a thing. |
| solar timenoun | (astronomy, time) A calculation of the passage of time based on the apparent position of the Sun in the sky. |
| mean planetnoun | (astronomy, celestial mechanics) An imaginary celestial body (corresponding to another, real, orbiting one) which orbits with constant speed along an auxiliary circle (a circle which shares a diameter with the major axis of the elliptical orbit of the corresponding real celestial body), such that its position coincides with the position of the corresponding, real celestial body when that body passes through periapsis. |
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