Perseids (per -see-idz) A major meteor shower, radiant: RA 47˙, dec +58˙, maximizing
on
Aug. 12 with a zenithal hourly rate (ZHR) of about 80.
Perseid meteors can be seen throughout the two weeks each side of maximum and are
bright and flaring, with fine trains.
The geocentric velocity of the meteoroids is about 60 km s˙1.
The meteoroid stream is closely associated with comet Swift˙Tuttle (1862 III), which
returned to the inner Solar System in late 1992.
Although the display is regarded as being constant in hourly rate there are exceptions, a
ZHR of 250 being observed in 1921 and 1992 and a ZHR of less than 10 in 1911 and
1912.
The shower has been regularly observed for over 100 years. The first record was in ad
36.
Full story:
https://encyclopedia2.thefreedictionary.com/Perseids
--- Platinum Xpress/Win/WINServer v10.0gr17
* Origin: The Hobby Line! BBS - hobbylinebbs.com (954:895/1)