The Nautical Almanac and Astronomical EphemerisH.M. Stationery Office, 1861 |
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Common terms and phrases
9 ΙΟ Aldebaran Aldebaran W Antares E Apparent nitude APPARENT PLACES Apparent Right Ascension Apparent True Dist Aquarii Aquila W Arietis Arietis W ASCENSION AND DECLINATION C's Dec Cancri Capricorni d h m diff Diff.Dec Earth Eclipse Fomalhaut Fomalhaut W Frid Geminor Geocentric Greenwich Mean Greenwich Transit Heliocentric hour of Long I.
I. Sh I.
I. Tr I. U. Moon I. L. II.L intermediate 1 Hour July June Jupiter E Latitude Leonis Libræ Logarithms LUNAR DISTANCES Mean Midnight Mean Noon Month Mag Moon I. U. Moon Moon II Moon II.U MOON'S RIGHT ASCENSION Name and Position North O'II Ophiuchi Orionis Pegasi Pegasi W Piscium Pollux E Pollux Regulus R. A. Dec Regulus E Regulus Spica Sagittarii Satellites Scorpii Semidiameter Sept South Star's Name SUN'S Tauri Thur TRANSIT AT GREENWICH True Eq Tues UPPER TRANSIT Vect Virginis WEDNESDAY Ο'ΟΙ ΟΙΟ
Popular passages
Page 503 - Day are the same in this Method as in the civil Account at Noon, and from Noon till Midnight; but from Midnight till Noon they differ; for...
Page 517 - The progressive motion of light, combined with the motion of the Earth in its orbit...
Page 433 - Shadow occurs at 33°, from the Northernmost point of the Moon's limb towards the East. The last contact at 21°, towards the West.
Page viii - Tables Ecliptiques des Satellites de Jupiter, d'après la théorie de leurs attractions mutuelles et les constantes déduites des Observations. Par le Baron DAMOISEAU. Publiées par le Bureau des Longitudes. Paris 1836," using gm 20' '6 for the difference of meridians.
Page 529 - TABLES FOR DETERMINING THE LATITUDE BY OBSERVATIONS OF THE POLE STAR OUT OF THE MERIDIAN. TABLE I. Containing the First Correction. Argument: — Sidereal Time of Observation. Sidereal Time. Correction. Sidereal Time.
Page x - January i, 1850: together with their annual precessions, secular variations, and proper motions, as well as the logarithmic constants for computing precession, aberration, and nutation. With a Preface explanatory of their Construction and Application. By the late Francis Baily, Esq.
Page 505 - Om 0', and at the succeeding return of the Star, or the Equinox, to the same meridian, the Clock ought to indicate the same time. The sidereal time here given is that in common use among astronomers, and expresses the actual hour-angle from the meridian, westward, of the true equinoctial point at the moment of observation. It is therefore affected by the equation of the equinoxes ; and is not, strictly speaking, a mean or uniformly increasing quantity.
Page 510 - All the distances that can be observed on the same day, are grouped together under that date; and the columns are read from left to right, across both pages of the same opening. The...
Page 522 - 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 numerous instances, to continue the seconds beyond 60, as the width of the page would not permit of otherwise indicating any change in the minutes. Thus, the apparent Right Ascension of...
Page 522 - Ascension from that of the Star would be constant at all meridians ; but in the interval of her transit over two different meridians, her Right Ascension will have varied, and the difference between the two compared differences will exhibit the amount of this variation, which added to the...