proper motion


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proper motion

n.
A gradual change in the position of a star or other object on the celestial sphere that is the result of the object's intrinsic motion through space rather than mere apparent motion as observed from Earth.

proper motion

n
(Astronomy) the very small continuous change in the direction of motion of a star relative to the sun. It is determined from its radial and tangential motion
References in classic literature ?
As the foreman of a spinning mill, when he has set the hands to work, goes round and notices here a spindle that has stopped or there one that creaks or makes more noise than it should, and hastens to check the machine or set it in proper motion, so Anna Pavlovna moved about her drawing room, approaching now a silent, now a too-noisy group, and by a word or slight rearrangement kept the conversational machine in steady, proper, and regular motion.
Let such bethink them, if the sleepy drench Of that forgetful Lake benumme not still, That in our proper motion we ascend Up to our native seat: descent and fall To us is adverse.
The motions of factions under kings ought to be, like the motions (as the astronomers speak) of the inferior orbs, which may have their proper motions, but yet still are quietly carried, by the higher motion of primum mobile.
Summary: TEHRAN (FNA)- By combining data from the Hubble Space Telescope and the Gaia mission, astronomers have been able to measure the proper motion of 15 stars in the Sculptor Galaxy, the first such measurement outside the Milky Way.
By combining a runaway's proper motion and line-of-sight velocity, astronomers can begin to deduce its probable origin.
In many cases, the court will still allow the accused to leave the country for legitimate reasons if he files the proper motion,' he said.
When giving casting lessons, I have seen the weight and slickness features help new casters pick up the proper motion with minimal effort.
This paper aims to obtain the common algorithm for the direct displacement analysis based on the Newton method and then the common kinematic constraints of 6-PSS parallel robot for a proper motion domain determination.
Hubble's precision tracking offers a new way to determine a galaxy's rotation by the "sideways" proper motion of its stars, as seen in the plane of the sky.
Proper motion supplants the golden relics of relative and absolute motion; the dubious lessons of Quantum nature must be extracted and distilled for their essential truths.
However, Roscommon were told it wasn't a proper motion for Congress and it was moved to Central Council but, bizarrely, Central Council then refused to hear it and deemed it a Congress issue.
The proper motion to close debate is the previous question, which requires a second and a two-thirds vote, although it can be accomplished by general consent.