The Nautical Almanac and Astronomical Ephemeris for the Year ...order of the Lords Commissioners of the Admiralty, 1835 |
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Common terms and phrases
25 Moon Aldebaran Aldebaran E Antares W APPARENT PLACES Aquarii Aquila Arietis E ASCENSION AND DECLINATION Cancri Capricorni Ceti d h m Days disc Dist Earth Eclipse EPHEMERIS Equation Fomalhaut Fomalhaut W Frid FRIDAY Geminor Geminorum Geocentric Greenwich Mean Greenwich Transit h m s Heliocentric Hours inverting telescope July June Jupiter E Leonis Libræ LUNAR DISTANCES Mars Pollux Mean Midnight Mean Noon Meridian Longitude MONDAY Month Moon I.
U.C. Moon II MOON'S RIGHT ASCENSION Name and Position nitude Ophiuchi Passage Pegasi W Piscium Pollux E PRINCIPAL FIXED STARS R. A. Dec Regulus E Right Ascension Declination Sagittarii SATELLITES OF JUPITER SATURDAY Saturn Antares Saturn E Scorpii Semidiam Semidiameter Sept Spica ny Antares Star's Name SUN'S SUNDAY Tauri Thur THURSDAY TRANSIT AT GREENWICH Tues TUESDAY UPPER TRANSIT URSE MINOR Vect Venus SUN Virginis Moon WEDNESDAY
Popular passages
Page 503 - Sun's mean motion in Right Ascension, and the interval between the departure of any meridian from the mean Sun and its succeeding return to it is the duration of the mean solar day. Clocks and chronometers are adjusted to mean solar time ; so that a complete revolution (through 24 hours) of the hour hand...
Page 521 - The progressive motion of light, combined with the motion of the Earth in its orbit...
Page 518 - New Tables for facilitating the Computation of Precession, Aberration, and Nutation of 2881 principal Fixed Stars; together with a Catalogue of the same reduced to Jan.
Page 525 - The hours and minutes of Right Ascension, and the degrees and minutes of Declination, are placed at the heads of the columns as constants, and belong equally to all the numbers below them. This arrangement has rendered it necessary, in...
Page 516 - Satellite is apparently at some distance from the body of Jupiter, except near the opposition of Jupiter to the Sun, when the eclipse takes place near to the body of the planet. Before the opposition, the Immersions and Emersions happen on the Western side, but after opposition ou the Eastern side, of the planet: With an inverting telescope, however, the appearances will be directly the contrary.
Page 459 - IN the Year 1835, there will be two Eclipses of the Sun, one of the Moon, and a Transit of Mercury.
Page 526 - The Right Ascension of the Moon's bright limb and Declination of her centre, at the instant of their respective transits at Greenwich, are given for the lower as well as the upper Culmination, L. being put to denote the Lower Culmination, and u. the Upper Culmination ; the Roman numerals indicate the limb of the Moon with reference to its transit over the meridian. The Moon's age at the time of her upper transit, to the nearest tenth of a day, is inserted in the column containing the Magnitudes of...
Page 507 - Sidereal Time at Mean Noon is the angular distance of the first point of Aries, or the true vernal equinox, from the meridian, at the instant of mean noon : it is therefore the Right Ascension of the mean Sun, or the time shown by a sidereal clock at Greenwich, when the mean time clock indicates oh om o*.
Page 516 - Satellite is at some Distance from the Body of Jupiter, except near the Opposition of Jupiter to the Sun, when the Satellite approaches nearer to his Body.
Page 503 - Hence it is that astronomers, with a view of obtaining a convenient and uniform measure of time, have recourse to a mean solar day, the length of which is equal to the mean or average of all the apparent solar days in the year. An imaginary Sun, called the