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Linea 1: '''Ascensio recta''' in [[astronomia]] altera coordinata in globo caelesti (imaginato) est, altera [[declinatio (Astronomia)\|declinatio]] vocatur. Ascensio recta respondet ad [[Circulus meridianus\|circulos meridianos]] geographicos. Principium coordinatae ascensionis rectae punctum vernum ''(quod dicitur)'' est, quo in puncto [[linea ecliptica]] et [[linea aequinoctialis]] secantur. Astronomus ab septentrionalibus spectans ascensione recta positionem rei caelestis dextrorsum (id est secundum horologii motionem) metitur. Ita uniuscuiusque rei caelestis locus pari (α;δ) significatur. <br/> ~~{{stipula}}~~ Astronomi ascensionem rectam non gradibus, sed horis metiuntur, sicut 24 horae 360 gradus aequent. Inde 1 hora 15° aequat, 1 minuta 15’, 1 secunda 15’’.<br/> Inclinatione ecliptica ascensio recta in longitudinem ac latitudinem eclipticam ratiocinanda est ut vias revolutionis planetarum aliorumque corporum [[systema solare\|systematis solaris]] censere possis (--> [[transformatio coordinatarum]]).<br/> Ascensione recta stellae cuiusdam nota facile censendum est, quo anni tempore stella illa optime sit spectanda, nempe censendo diem quo stella media nocte summum locum teneat (--> [[Oppositio (Astronomia)\|oppositio]]). [[categoria: Astronomia]] Ascensio recta (RA; symbolum α: Graeca littera alpha)est astronomicum verbum cum agitur de una ex duabus coordinationibus puncti caelestis spherae utendo aequatoris coordinationum constitutione. Altera coordinatio est [[declinatio]]. ~~<!--~~ ~~Explanation~~ RA is comparable to longitude, measured from a zero point known as the vernal equinox point. Also known as the First Point of Aries; more commonly the first day of Spring. This however changes as a result of the Earth's rotation axis precessing once every ~26,000 years. RA is measured in hours, minutes, and seconds. Being closely tied with sidereal time, it is both a unit of time and of angle. An hour of right ascension is equal to 15 degrees of arc, a minute of right ascension equal to 15 minutes of arc, and a second of right ascension equal to 15 seconds of arc. An alternative measure, used in navigation, is Sidereal Hour Angle. The main difference being that RA is measured Eastward, and SHA is measured Westward. RA can be used to determine a star's location and to determine how long it will take for a star to reach a certain point in the sky. For example, if a star with RA = 01:30:00 is at your meridian, then a star with RA = 20:00:00 will be in the meridian 18.5 sidereal hours later. ~~--!>~~ [[bg:Ректасцензия]] [[ca:Ascensió recta]] Line 18 ⟶ 13: [[et:Otsetõus]] [[es:Ascensión recta]] [[fi:Rektaskensio]]▼ [[fr:Ascension droite]] [[gl:Ascensión recta]] ~~[[ko:적경]]~~ ~~[[la:Ascensio recta]]~~ [[hr:Rektascenzija]] [[hu:Rektaszcenzió]] [[id:Aksensio rekta]] [[it:Ascensione Retta]] [[huko:~~Rektaszcenzió~~적경]] [[nl:Rechte klimming]] [[ja:赤経]] Line 31 ⟶ 26: [[pt:Ascensão reta]] [[sk:Rektascenzia]] ▲[[fi:Rektaskensio]] [[sv:Rektascension]] [[th:ไรต์แอสเซนชัน]] [[vi:Xích kinh]] [[zh:赤经]]~~-->~~

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