The Planetarium and Astronomical Calculator |
From inside the book
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Page 34
... equal to the velocity with which he moves . in his annual orbit . This planet is surrounded by faint substances called belts , in which so many changes appear , that they have been regarded by some , as clouds or openings in the at ...
... equal to the velocity with which he moves . in his annual orbit . This planet is surrounded by faint substances called belts , in which so many changes appear , that they have been regarded by some , as clouds or openings in the at ...
Page 37
... equal to its distance from Saturn on all sides . This ring performs a revolution on its axis in the same space of time with the planet , namely , ten hours 16 miutes and two seconds.— This ring seen from the planet Saturn , appears like ...
... equal to its distance from Saturn on all sides . This ring performs a revolution on its axis in the same space of time with the planet , namely , ten hours 16 miutes and two seconds.— This ring seen from the planet Saturn , appears like ...
Page 39
... equal to that of Jupiter , yet he does not appear to be in form , so near that of a globe as that planet . When we consider that the ring by which Saturn is encompassed , lies in the same plane of his equator , and , that it is at least ...
... equal to that of Jupiter , yet he does not appear to be in form , so near that of a globe as that planet . When we consider that the ring by which Saturn is encompassed , lies in the same plane of his equator , and , that it is at least ...
Page 60
... about one half of the Sun above the horizon , and likewise an observer at the Equator discovers both poles in the horizon . equal to his greatest north declination , and from thence 60 Sec . 4 Phenomena of the Heavens , & c.
... about one half of the Sun above the horizon , and likewise an observer at the Equator discovers both poles in the horizon . equal to his greatest north declination , and from thence 60 Sec . 4 Phenomena of the Heavens , & c.
Page 61
Tobias Ostrander. equal to his greatest north declination , and from thence he seems gradually to descend in every apparent cir- cumvolution till he sets at the sign Libra , on the 23d September , and then he goes to exhibit the same ap ...
Tobias Ostrander. equal to his greatest north declination , and from thence he seems gradually to descend in every apparent cir- cumvolution till he sets at the sign Libra , on the 23d September , and then he goes to exhibit the same ap ...
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Common terms and phrases
angle apogee approach of centres Aries ascending node Astronomers attractive power body calculated centrifugal force Comets conjunction consequently descending diameter as seen difference Dominical letters earth Earth's shadow enter Table equal equator equinox fall fixed stars full Moon Geocentric longitude given gravity greatest grees H M. S. half Heavens heliocentric Herschel horary motion horizon Interrogations for Section Jupiter light longitude lunar Lunar Eclipses mean motion mean new Moon Middle apparent millions of miles minutes Moon in March Moon's mean anomaly Moon's node Moon's orbit Moon's true move nearer north pole Old Style opposite parallax penumbra performs a revolution perigee Pisces planet projectile force rays revolves rise round the Sun satellites Saturn seconds semi-diameter signs and degrees Solar System south pole subtract Sun and Moon Sun's distance Sun's mean anomaly Sun's mean distance Sun's true surface syzygy tance telescope Tides tion velocity Venus visible