What (who) is Proper (liturgy) - definition
PARTS OF THE LITURGY CHANGING OVER THE COURSE OF THE YEAR
Proper of the Mass; Proprium; Propers; Proper of the mass; Proper Office
Proper (liturgy)
The proper (Latin: proprium) is a part of the Christian liturgy that varies according to the date, either representing an observance within the liturgical year, or of a particular saint or significant event. The term is used in contrast to the ordinary, which is that part of the liturgy that is reasonably constant, or at least selected without regard to date, or to the common, which contains those parts of the liturgy that are common to an entire category of saints, such as apostles or martyrs.
Erik Proper
DUTCH COMPUTER SCIENTIST
Henderik A. Proper; Henderik Alex Proper; H.A. Proper; Proper, Erik; Henderik Proper
Henderik Alex (Erik) Proper (born 22 May 1967) is a Dutch computer scientist, an FNR PEARL Laureate, and a senior research manager within the Computer Science (ITIS) department of the Luxembourg Institute of Science and Technology (LIST).
proper motion
![Proper motion of [[61 Cygni]] in one year intervals.](https://commons.wikimedia.org/wiki/Special:FilePath/61 Cygni Proper Motion.gif?width=200 "Proper motion of [[61 Cygni]] in one year intervals.")
![March equinox]] (center of the sun's position then) at the J2000 epoch, is vector ''V''.<br>In red the diagram adds the components of proper motion across the [[celestial sphere]].<br>An ideal time to measure exactly such a small annual shift is at culmination. The culmination of the star is daily reached when the observer (and earth) passes as shown by the blue arrows "beneath" the star.<br>The positive axes of the two components of its usually annually measured or published shift in proper motion are the exaggerated red arrows, note: the right arrows point to the east horizon. One red annotation is subtly shorter as the cosine of a star resting at 0° declination is 1, so such a star's east or west shift would not need to be multiplied by the cosine of its declination.<br>The proper motion vector is '''''μ''''', ''α'' = [[right ascension]], ''δ'' = [[declination]], ''θ'' = [[position angle]].](https://commons.wikimedia.org/wiki/Special:FilePath/Components of proper motion.svg?width=200 "March equinox]] (center of the sun's position then) at the J2000 epoch, is vector ''V''.<br>In red the diagram adds the components of proper motion across the [[celestial sphere]].<br>An ideal time to measure exactly such a small annual shift is at culmination. The culmination of the star is daily reached when the observer (and earth) passes as shown by the blue arrows \"beneath\" the star.<br>The positive axes of the two components of its usually annually measured or published shift in proper motion are the exaggerated red arrows, note: the right arrows point to the east horizon. One red annotation is subtly shorter as the cosine of a star resting at 0° declination is 1, so such a star's east or west shift would not need to be multiplied by the cosine of its declination.<br>The proper motion vector is '''''μ''''', ''α'' = [[right ascension]], ''δ'' = [[declination]], ''θ'' = [[position angle]].")
ASTRONOMICAL MEASURE OF THE OBSERVED CHANGES IN THE APPARENT PLACES OF STARS IN THE SKY
Proper Motion; Proper motions; Improper motion; Intrinsic motion; Proper-motion; Common proper motion star; Proper motion star; High proper motion star
¦ noun Astronomy the part of the apparent motion of a star due to its actual movement in space relative to the sun.
Wikipedia
Proper (liturgy)
The proper (Latin: proprium) is a part of the Christian liturgy that varies according to the date, either representing an observance within the liturgical year, or of a particular saint or significant event. The term is used in contrast to the ordinary, which is that part of the liturgy that is reasonably constant, or at least selected without regard to date, or to the common, which contains those parts of the liturgy that are common to an entire category of saints, such as apostles or martyrs.
Propers may include hymns and prayers in the canonical hours and in the Eucharist.
