(meteorobs) Obs: 14 December 2007

[David Oesper]

14 December 2007 0700-0900 UT (CST 14 Dec 1:00 – 3:00 a.m.)

David Oesper
NE of Dodgeville, Wisconsin
43 02 06 N, 90 05 22 W, ~960 ft.
Method: Visual, digital voice recorder, talking clock

Zenithal Sky Brightness: 21.05 mag./sq." @ 0645 UT
Limiting Magnitude: 6.1 [(SQM-8.89)/2]+ 0.04
SQM = Sky Quality Meter
Sky Conditions: Clear 1st hour, 10%-->60% cirrusy cloud cover 2nd hour

0700 - 0800
Geminids: 31
Other: 0
Total Meteors: 31

0800 - 0900
Geminids: 35
Other: 1
Total Meteors: 36

-4 (or brighter) Geminid fireball 0647 UT below Orion, southern sky;
terminated 15-20 degrees; above S horizon

0700 start of session
0701 +1 GEM, +2 GEM
0703 +3 GEM, +2 GEM
0706 +2 GEM
0707 +2 GEM
0712 +2 GEM, +5 GEM
0715 +2 GEM
0717 +3 GEM
0720 +4 GEM, +5 GEM
0721 -1 GEM +2 GEM
0725 +3 GEM
0726 +2 GEM, +1 GEM
0731 +1 GEM, +3 GEM, +2 GEM
0733 +0 GEM
0739 -0 GEM
0742 flash in sky towards SE?  Presume GEM.
0748 +2 GEM
0749 +1 GEM
0750 +2 GEM, +1 GEM, +2 GEM
0751 +2 GEM
0753 +1 GEM
0755 +1 GEM, slower than the usual Geminid?

0803 -4 GEM in East
0805 +0 GEM, +2 GEM
0805 Sky beginning to degrade cirrusy clouds ~10% covered
0806 +2 GEM
0809 +1 GEM, -1 GEM
0811 +1 GEM
0812 +2 GEM
0818 +2 GEM, +3 GEM, +4 GEM
0819 -1 GEM
0820 +1 GEM
0824 +2 GEM
0829 +2 GEM
0831 +0 GEM
0832 +1 GEM
0834 -1 GEM
0835 +1 GEM
0837 +2 GEM
0838 +4 GEM, +3 GEM, +2 GEM
0839 +1 GEM
0840 +3 Spo, +2 GEM
0842 +1 GEM
0843 +2 GEM
0849 +2 GEM, -1 GEM
0852 +2 GEM, +2 GEM
0853 +1 GEM, +0 GEM
0856 +1 GEM
0858 -1 GEM, yellowish tint
0900 50-60% cirrusy cloud cover
0900 End of session

Zenithal Sky Brightness: 20.92 mag./sq." @ 0904 UT
Limiting Magnitude: 6.1 [(SQM-8.89)/2]+ 0.04