The Nautical Almanac and Astronomical EphemerisH.M. Stationery Office, 1859 |
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Common terms and phrases
Aldebaran Aldebaran W Antares W Apparent nitude APPARENT PLACES Apparent Right Ascension Apparent True Dist Aquarii Aquila Aquila W Arietis Arietis W ASCENSION AND DECLINATION C's Dec Cancri Capricor Capricorni correcting the Places d h m diff Diff.Dec Eclipse Fomalhaut Fomalhaut W Frid Geminor Geocentric Greenwich Mean Greenwich Transit h m s Heliocentric hour of Long I.
I. Sh I. U. Moon I. L. intermediate 1 Hour July June Jupiter E Jupiter Spica Latitude Leonis Libræ Logarithms LUNAR DISTANCES Mean Midnight Mean Noon Meridian Longitude Moon I. U. Moon Moon II Moon II.U MOON'S RIGHT ASCENSION Name and Position North O'II Orionis Pegasi Pegasi W Piscium Pollux E R. A. Dec Regulus E Regulus Saturn Satellites Saturn Jupiter Scorpii Semidiameter Sept South Star's Name Thur THURSDAY TRANSIT AT GREENWICH True Eq Tues TUESDAY UPPER TRANSIT Vect Virginis WEDNESDAY ΙΟ
Vinsælir kaflar
Síða 521 - The progressive motion of light, combined with the motion of the Earth in its orbit...
Síða 428 - ECLIPSES. In the year 1883 there will be two Eclipses of the Sun, and two of the Moon.
Síða 505 - ... interval of time between the departure of any meridian from a heavenly body and its succeeding return to it, and derives its name from the body with which the motion of the meridian is compared. The interval between the departure and return of a meridian to the Sun is called a solar day ; in the...
Síða 533 - 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.
Síða 505 - ... the length of which is equal to the mean or average of all the apparent solar days in a year. An imaginary Sun, called the 'Mean Sun...
Síða 487 - TIME OF HIGH WATER, ON THE FULL AND CHANGE OF THE MOON, AT THE UNDERMENTIONED PORTS AND PLACES.
Síða 515 - Ephcmcris which include the given distance. 3. With the approximate interval and this difference, as arguments, take out the correction from the table. 4. If the Proportional Logarithms are decreasing, add the correction to the approximate time; but if increasing, subtract it: the result will be the accurate Greenwich mean time. Example I. — Suppose it were required to find the Greenwich Mean Time, at which the reduced distance between the Moon and a Pegasi would be 50° So' 0
Síða 505 - ... returned to the same position. As the time deduced from observation of the true Sun is called true or apparent time, so the time deduced from the mean Sun, or indicated by the machines which represent its motion, is denominated mean time.
Síða viii - For the first Satellite, equations 4 and 5 have been taken from the Tables for every Eclipse, and the other equations for each sixth Eclipse. For the second Satellite, equation 4 has been taken for every Eclipse, and the others for each fourth Eclipse.
Síða 519 - ... 2. Mean Time of Transit of the First Point of Aries. The time in this column shows the distance of the mean Sun from the meridian, at the instant when the true point of intersection of the ecliptic and equator (called the first point of Aries) is on the meridian of Greenwich; and as the distance of the first point of Aries from the meridian, at the instant the mean Sun is on the meridian, is denominated sidereal time at mean noon, this may, by analogy, be termed the mean time at sidereal noon.