Memoirs of the Connecticut Academy of Arts & Sciences Volume 1, PT. 1

Memoirs of the Connecticut Academy of Arts & Sciences Volume 1, PT. 1

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1810 edition. Excerpt: ...It is probable however, that the errors of the observations will exceed those of the calculation I have made, in their effects on some of the deductions. The following are the results of that calculation. Place of the ascending node, 8s 27 08' Place of perihelion, 8 28 48 Inclination of its orbit to ecliptic, O 63 O9 Perihelion distance, that of the earth 64480 from the sun being 1, ' Time of being in perihelion, Sept. 18th, 12h. 40m. P. M. Time of its being in ascending node, Sept. 17th, Sh.P.M.. Motion of the comet, direct. ' REMARKS. This comet approached the sun from the regions of the south, and first became visible to an inhabitant of the earth, about the 25th of July last. From that time, it might have been seen by those who live in places of considerable south latitude; but on account of the great inclination of its orbit to the ecliptic, and its little elongation in longitude, during all the time of its approaching to, and part of that of its receding from the sun, it could not be seen by the inhabitants of Europe, or of the United States, till towards the end of September. After this, its elongation, in north latitude, was increased, so as to give it an elevation above the horizon, which caused it to be visible after sun-setting. It disappeared to the naked eye, about the beginning of November, but was discernible with a telescope towards the end of that month.. From a comparison of the elements as above stated, with those of 78 comets observed by European astronomers, during the two or three last centuries, it does not appear, that this comet is one of that number. That of 1684, calculated by Dr. Halley, agrees nearest with this, in all the elements, except that of perihelion distance; but this alone, if the numbers, as...show more

Product details

  • Paperback | 72 pages
  • 189 x 246 x 4mm | 145g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236765257
  • 9781236765253