(meteorobs) NWM 1974 and 1977 Leonid data
Norman W. McLeod III
nmcleod at peganet.com
Thu Mar 10 02:46:35 EST 2005
1974 Nov 16/17, 1974 Nov 17 UT, lat 27.0 N, long 82.0 W, south of Punta
Gorda, Florida, USA
1016 - 1128 EST 316 - 428 UT Teff 1.20 F1.0 LM 6.0 0 LEO 12
TAU 5 SPO 17 total sky hazy
1128 - 1228 EST 428 - 528 UT Teff 1.00 F1.0 LM 6.5 1 LEO 7
TAU 3 SPO 11 total
1228 - 128 EST 528 - 628 UT Teff 1.00 F1.0 LM 7.0 3 LEO 9
TAU 4 SPO 16 total
128 - 228 EST 628 - 728 UT Teff 1.00 F1.0 LM 7.0 17 LEO 2
TAU 7 SPO 26 total
228 - 328 EST 728 - 828 UT Teff 1.00 F1.0 LM 7.0 22 LEO 5
TAU 10 SPO 37 total
328 - 428 EST 828 - 928 UT Teff 1.00 F1.0 LM 7.0 21 LEO 3
TAU 5 SPO 29 total
428 - 528 EST 928 - 1028 UT Teff 1.00 F1.0 LM 7.0 40 LEO 4
TAU 10 SPO 54 total
528 - 605 EST 1028 - 1105 UT Teff 0.62 F1.0 LM -- 9 LEO 2
SPO 11 total dawn starts 1030 UT
LEO magnitudes :
428 - 528 UT +1m earthgrazer at 512 UT (1212 EST) , orange, 120 degrees,
8s duration, train 3 sec, had a heavy nebulous envelope.
528 - 628 UT : +2 (1) +3 (0) +4 (2)
628 - 728 UT : -2 (1) -1 (0) 0 (2) +1 (4) +2 (1) +3 (4) +4 (4) +5 (1)
728 - 828 UT : -3 (2) -2 (2) -1 (0) 0 (3) +1 (4) +2 (5) +3 (3) +4 (2)
+5 (0) +6 (1)
828 - 928 UT : -5 (1) -4 (0) -3 (0) -2 (0) -1 (1) 0 (1) +1 (6) +2
(2) +3 (4) +4 (3) +5 (2) +6 (1)
928 - 1028 UT : -5 (0) -4 (1) -3 (0) -2 (0) -1 (1) 0 (5) +1 (8) +2
(6) +3 (4) +4 (5) +5 (7) +6 (2)
unclassified - saw train only (1)
sporadic magnitudes only in sky LM 7.0 :
528 - 1028 UT : -2 (1) -1 (0) 0 (1) +1 (0) +2 (9) +3 (6) +4 (9) +5 (9)
+6 (1)
________________________
1977 Nov 15/16, 1977 Nov 16 UT, lat 25.75 N, long 80.5 W, west of Miami,
Florida, USA
222 - 322 EST 722 - 822 UT Teff 1.00 F1.0 LM 7.0 5 LEO 1
TAU 1 NTA 8 SPO 15 total
322 - 422 EST 822 - 922 UT Teff 1.00 F1.2 LM 7.0 8 LEO 1
STA 1 NTA 9 SPO 19 total 20% cirrus
422 - 522 EST 922 - 1022 UT Teff 1.00 F1.0 LM 7.0 13 LEO 9
SPO 22 total
LEO magnitudes :
722 - 822 UT : +2 (2) +3 (2) +4 (1)
822 - 922 UT : -1 (1) 0 (0) +1 (2) +2 (0) +3 (2) +4 (1) +5 (2)
922 - 1022 UT : -1 (1) 0 (1) +1 (0) +2 (3) +3 (6) +4 (1) +5 (0) +6 (1)
sporadic magnitudes :
722 - 1022 UT : +1 (2) +2 (7) +3 (5) +4 (6) +5 (4) +6 (2)
________________
1977 Nov 16/17, 1977 Nov 17 UT, lat 25.75 N, long 80.5 W, west of Miami,
Florida, USA
250 - 315 EST 750 - 815 UT Teff 0.42 F1.0 LM 7.0 1 LEO 1
TAU 1 STA 5 SPO 8 total
435 - 500 EST 935 - 1000 UT Teff 0.42 F1.0 LM 7.0 3 LEO 5
SPO 8 total
LEO magnitudes :
750 - 815 UT : +3 (1)
935 - 1000 UT : 0 (1) +1 (0) +2 (0) +3 (1) +4 (0) +5 (1) +6 (0)
Sporadic magnitudes for both periods above :
+2 (3) +3 (2) +4 (2) +5 (3)
__________________
1977 Nov 16/17 had variable cloudiness so I am using only the 2 clear
periods. The night before had much better Leonid rates. I was wondering
how long it would be before somebody would investigate the good 1974 Leonid
display. That was the last of the 1960's series. I saw a -12m Leonid 1979
Nov 22, well after the max. 1983 was memorable in having a number of -2m
Leonids. No recollection of anything else interesting until 1996 although
I did not see the Leonids every year. Who has, for that matter?
The work pace is in a temporary slowdown. After the heavy tax peak in late
Jan - early Feb it gets quieter in March before the final rush in early
April. Been a rough year for illnesses. I caught a mild cold in late Jan,
out of work one day, but had a stuffy head for nearly a month
afterwards. Usually it clears up after just a week. Almost everyone else
at the office went through the mill also. Same symptoms were widespread
among other people so I wasn't alone.
Norman
Norman W. McLeod III
Staff Advisor
American Meteor Society
Fort Myers, Florida
nmcleod at peganet.com
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