Full text: The orbit and phenomena of a meteoric fire-ball, seen July 20, 1860

32 
ON THE ORBIT AND PHENOMENA 
Azimuths. Altitudes . 1 
N. 57|° W. 62° 50' 
N. 47^° W. 65° 50' 
N. 22° W. 70° 0' 
North. 71° 30' 
West Bloomfield , New Jersey. See Mont Clair, Nos. 97 and 190. 
West Point, New York, Nos. 205 and 208. No. 205 was observed by Prof. 
Bartlett, who says in a communication to Prof. Lyman, of Yale College: “The 
meteor passed very near h Cor Borealis, which at the time was near the meridian, 
so that the result is but an approximation.” He estimates the time of flight at 
about a minute and a quarter. No. 208 was observed by Lieut. G. K. Warner, 
who says that the greatest altitude was 60° to 65°; the direction of its motion S. 
48° E. by compass, and that it was seen for 45 seconds after it passed a due west 
point. 1 2 
West Roxbury , Massachusetts, Lat. 42° 19', Lon. 71° 5'. Exported time about 
10 o’clock. 3 
West Springfield , Massachusetts, Nos. 35, 67, and 72. Communicated by Rev. 
Theron H. Hawkes, from observations by a gentleman whose name he does not 
give. Of No. 67 he says : “ The meteor was seen distinctly, and the locality of it 
accurately defined by two trees, before the house, whose branches formed an arch, 
in the centre of which it appeared.” The altitude at this point was measured by 
the “card method.” Nos. 35 and 72 were estimated without instruments, and the 
altitude at the former (viz. at S. 14° E.—an azimuth previously designated), Mr. 
H. says, “ is partly a matter of conjecture, as at that point it was hidden from view 
by the thick foliage of the trees. But as nearly as we could judge, it must have 
been about 20°.” The altitude at the point of the meteor’s disappearance, he says, 
was “perhaps 6° or 8°.” 
Williamsburg , New York, Lat. 40° 43', Lon. 73° 58'. Visible about a minute; 
second disruption when near its greatest altitude. 4 
Williamstown , Massachusetts, No. 25. Observed by Prof. Albert Hopkins, who 
says the meteor “ passed through the constellation Scorpio, probably a little below 
Antares,” and disappeared at 9h. 49m. 59 sec. 5 
Wilmington , Delaware, Lat. 39° 41', Lon. 75° 28'. Reported time, 9h. 45m. 6 
Woodbury , New Jersey, No. 227. Copied from a newspaper report, over the 
1 More than three months had elapsed when these altitudes were estimated, which renders them 
less reliable than if they had been made at the time of the passage of the meteor. According to 
the calculated path they are considerably too high. 
a If we allow 6£° for magnetic variation, the course of the meteor “by compass,” when it crossed 
the meridian, according to the calculated path, was about S. 52J° E., and 45 seconds after the me 
teor was due west its azimuth was about S. 62|° E., and its altitude about 5£°. 
3 Calculated time of meridian passage 9h. 59m. 53 sec. 
4 According to the calculated path, the second disruption occurred two or three seconds before the 
meteor attained its greatest altitude. See note under Washingtonville. 
5 Calculated time of meridian passage at Williamstown, 9h. 51m. 8 sec. 
6 Calculated time of meridian passage at Wilmington 9h. 41m. 54 sec. 
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