Visual observations of the 1997 Perseids are reported. Based on over 900 hours of observing time, an activity profile from July 15 to August 24 is given. The clear maximum of activity with a ZHR of 57.5+-3.1 was noted during the night August 12-13, 1997. After averaging in shorter periods of time, we did not obtain any trace of the third maximum observed earlier by the International Meteor Organization observers. Also, the value of the population index r during this night is significantly larger than IMO estimates. Analysis of our 1995-1997 observations yielded confirmation of the presence of the wide plateau in the activity profile around lambda approx. 129 degrees discovered by Olech .
WGN, Journal of the International Meteor Organization
- Pub Date:
- April 1998