 | John Hymers - 1840 - 386 ページ
...90°. The Polar Distance is the angular distance from the pole, or the complement of the declination. The Right Ascension of a star is the arc of the equator, intercepted between a certain fixed point in the equator, called the first point of Aries,' and the declination circle... | |
 | Benjamin Peirce - 1845 - 498 ページ
...Horizon. circles of declination, which the first meridian does to other terrestrial meridians. . 8. 'f The declination of a star is its angular distance...either estimated in degrees, minutes, &c. from 0° to 300° ; or in hours, minutes, &c. of time, 15 degrees being allowed for each hour, as in Sph. Trig.... | |
 | William Chauvenet - 1863 - 764 ページ
...at the instant is understood, unless otherwise stated. The right ascension of a point of the sphere is the arc of the equator intercepted between its circle of declination and the vernal equinox, and is reckoned from the venial equinox eastward from 0° to 360°, or, in time, from 0* to 24*. The... | |
 | William Chauvenet - 1864 - 726 ページ
...at the instant is understood, unless otherwise stated. The right ascension of a point of the sphere is the arc of the equator intercepted between its circle of declination and the vernal equinox, arid is reckoned from the vernal equinox eastward from 0° to 360°, or, in time, from 0* to 24\ The... | |
 | William Chauvenet - 1864 - 720 ページ
...at the instant is understood, unless otherwise stated. The right ascension of a point of the sphere is the arc of the equator intercepted between its circle of declination and the vernal equinox, and is reckoned from the vernal equinox eastward from 0° to 360°, or, in time, from 0* to 24*. The... | |
 | George William Cox - 1867 - 1002 ページ
...the dock at which any star passes the meridian is the right ascension of the star in time. The OBUQVB ASCENSION of a star is the arc of the equator intercepted between the vernal equinox and that point of the equator which comes to the horizon at the same time with the... | |
 | Charles Leander Doolittle - 1885 - 690 ページ
...are the poles of the solstitial colure, and the solstices are the poles of the equinoctial colure. THE RIGHT ASCENSION of a star is the arc of the equator intercepted between the vernal equinox and the foot of the hourcircle passing through the star. It is reckoned from the... | |
 | 1888 - 952 ページ
...was located. Pop. of isiand, 200. Ascension [from the Lat. a«ctn'«io, an "ascent"]. In astronomy, the right ascension of a star is the arc of the equator intercepted between the first point of Aries and that point of the equator which comes to the meridian at the same instant... | |
 | John Thornton (M.A.) - 1890 - 372 ページ
...the hour circle between the star and the pole. Declination + polar distance = 90°. (See fig. 12. ) The right ascension of a star is the arc of the equator intercepted between a certain point of the equator called 'the first point of Aries' and the star's hour circle ; or, by... | |
 | John Thornton - 1899 - 460 ページ
...great circle passing from the pole through the star. Declination + polar distance = 90°. The light ascension of a star is the arc of the equator intercepted between the point where a perpendicular from the star meets the equator and the point called the first point... | |
| |
... equator and the ecliptic, and hence, also, the position of the equinoxes. In expressing the positions of stars, referred to the vernal equinox, at any given instant, the actual position of the equinox at the instant is understood, unless otherwise... 
