The American Ephemeris and Nautical AlmanacU.S. Government Printing Office, 1853 |
Outras edições - Ver todos
The American Ephemeris and Nautical Almanac United States Naval Observatory. Nautical Almanac Office Visualização completa - 1964 |
The American Ephemeris and Nautical Almanac United States Naval Observatory. Nautical Almanac Office Visualização completa - 1961 |
The American Ephemeris and Nautical Almanac United States Naval Observatory. Nautical Almanac Office Visualização completa - 1969 |
Termos e frases comuns
33 Capricor Apparent Declination APPARENT PLACES Apparent Right Ascension ASCENSION AND DECLINATION Astr Auriga CALCULATION OF OCCULTATIONS Cancri Coefficient Eclipse Disapp Eclipse II Eclipse Reapp Egress 19 Egress 26 Egress W ELEMENTS FOR FACILITATING Ephemeris Geminor GREENWICH MEAN hour of Longitude Ingress 17 Ingress 25 Ingress Ingress Ingress W July 9 June 9 Leonis Libræ Logarithm Variation LUNAR DISTANCES Mean Solar Meridian Passage MERIDIAN TRANSIT Moon MOON'S RIGHT ASCENSION Nachr Name and Position Name and R.A. NOON AND MERIDIAN North OCCULTATIONS OF PLANETS P. L. of Diff Parallax Pegasi Jupiter Piscium PLANETS AND STARS Pleiadum 18 PRINCIPAL FIXED STARS R. A. In Dec R.A. Dec R.A. of Star Sagittarii Sept Shadow Egress Sidereal Date Sidereal Day Sidereal Minutes Sidereal Oh Star's Name Thur TRANSIT AT WASHINGTON Transit Ingress True Longitude Tues UPPER TRANSIT Variation of Moon's WASHINGTON MEAN WASHINGTON MERIDIAN WASHINGTON SIDEREAL NOON
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Página 391 - In the year 1891 there will be four Eclipses : two of the Sun and two of the Moon. I. A total Eclipse of the Moon, May 23, partly visible at Greenwich as a partial Eclipse.
Página 493 - Star, viewed with a telescope that inverts, will disappear and reappear. By "Angle from N. Point" is to be understood the arc included between the Star, when in contact, and the point of intersection of the limb with a circle passing through the North Pole and the centre of the Moon's image ; and by "Angle from Vertex...
Página 483 - ... of the sun is called Solar Time. This is the most natural and direct measure of time. But the intervals between the successive returns of the sun to the same meridian are not exactly equal, owing to the varying motion of the earth around the sun, and to the obliquity of the ecliptic.
Página 484 - The Astronomical Day commences at noon on the civil day of the same date. It also comprises twenty-four hours; but they are reckoned from 0 to 24, and from the noon of one day to that of the next following. The...
Página 490 - a1 + 6' coty ^ must be taken of the same sign with a, and is a sufficiently near approximation to the angle of contact from the north towards the east. For the shadow of a total eclipse, ^ must be taken with a sign opposite that of a.
Página 484 - January 9th, 2 h , astronomical time. The rule, then, for the transformation of civil time into astronomical time is this: — If the civil time is marked AM, take one from the day and add twelve to the hours, and the result is the astronomical time wanted...
Página 483 - EPHEMERIS FOR THE MERIDIAN OF GREENWICH. THE greater portion of this Ephemeris, embracing the positions of the sun and moon; the distances of the moon from the centres of the sun and the four most conspicuous planets, and from certain fixed stars; the ephemerides of the planets Mercury, Venus, Mars, Jupiter, and Saturn, is designed for the special use of navigators. The remainder contains...