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SUN'S RISING AND SETTING, RIGHT ASCENSION,
DECLINATION, AND EQUATION OF TIME.
The soul that sees Him, or receives sublimed
SOLAR PHENOMENA. The sun enters Virgo at 54 min. after 4 of the morning of the 23rd of this month.
The sun and all the planets move round the common centre of gravity of the system: which centre is nearly in the centre of the sun. This motion changes into epicycloids, the ellipses of the planets, and comets which revolve round the sun.
A body which weighs one pound at the equator of the earth, would, if removed to the equator of the sun, weigh 27.9 pounds. The space passed through by descending bodies, in the first second of time, in the latitude of London, is 16.095 feet: on the sun, bodies fall with a velocity of 334.65 feet in the first second of time.
Phases of the Moon.
New Moon, 25th ...... 44 ........ 9 evening. Conjunctions of the Moon with the Planets and Stars. August 11th, with Uranus.......... at 10 morning.
14th, .... Jupiter............ 4 afternoon.
PHENOMENA PLANETARUM. Mercury in conjunction with o, in Leo, on the 1st of this month, difference of latitude 4'. Descending node on the 2nd. În conjunction with Saturn on the 11th. Greatest elongation, as an evening star, on the 12th, angular distance 27° 26'. Stationary on the 26th.
A body which weighs one pound at the equator of the earth, would, if removed to the equator of Mercury, weigh 1.03 pounds.
Venus attains her greatest north latitude on the 21st. In conjunction with x, in Leo, on the 26th, difference
of latitude 4' ; with Saturn at 7 in the morning of the 31st, difference of declination 32.
Phases of Venus. The following are the proportions of the light and dark phases of this planet, from which it will be perceived that nearly the whole of the disc, relative to the earth, is illuminated : August 1st.-Illuminated disc = 11.9999
Dark part. ..... = 0.0001 A body which weighs one pound at the equator of the earth, would, if removed to the equator of Venus, weigh only 0.98 pounds.
Mars in quadrature at 15 min. after noon of the 3rd day.
A body which weighs one pound at the equator of the earth, would, if removed to the equator of Mars, weigh only one-third of a pound.
The Asteroids. Vesta, 4th day. Right Ascension, 11 10. N. Declin. 10° 51' 12th
9 19 20th
... 11 39. ........ 7 45 28th ....
11 53. .
28th Pallas, 4th
.. 11 46
Jupiter on the 1st, within 10 39' of the equinoctial colure, near the star numbered 513.
A body which weighs one pound at the equator of the earth, wonld, if removed to the equator of Jupiter, weigb 2.716 pounds. But this must be diminished a ninth part, on account of the centrifugal force due to each planet. Eclipses of the Satellites of Jupiter.
IMMERSIONS. First satellite, 7th day, at 43 min. 40 sec. after 10 night.
14th ...... 37 .... 57 ........ midnight. 22nd ...... 32 .... ........ 2 morning. 23rd ...... 1....
9 evening. 30th ...... .... ........ 10 night. Second satellite, 3rd ...... ....
... 1 morning. 27th ...... 37 .... 43 ........ 10 night. Third satellite, 2nd ....... 33 ..... 52 .......... 2 morning.
It has been generally supposed, that it is impossible to observe the eclipses of the satellites of Jupiter, at sea, with sufficient precision, to determine the longitude of a ship; from experience, however, it appears that the contrary is the case. From the statement of Lieutenant Peter Lecount, R. N., it seems that, in moderate weather, these phenomena can be observed by any one who has been accustomed to use a telescope at sea, and that the three-feet glasses, with a power of about 45, in common use, on board men-of-war, are the most proper for the purpose.
As it is very troublesome to follow the satellite when the ship has much motion, Mr. L. recommends the observer to limit his attention to the times when the vessel is at the extremity of her roll or pitch. An attendant, with a watch, should be at hand to note the