(meteorobs) HALWA at NJAA Sept 4 & 7

meteoreye at comcast.net meteoreye at comcast.net
Thu Oct 16 11:31:09 EDT 2008


This e-mail will cover 2 nights as the moon became for of a factor.  For both of them, the observations 
were at the NJAA Observatory. 74d53m53s W, 40d40m52s N. 253 Meters. IMO site 
25186.

All meteors were plotted, which allowed me to reanalyze the data in light of the 
unexpected SPE activity.

Plot times were measured directly from the audio tape to derive the Teff.

Since the Sept 9 SPE outburst and voluminous IMO video data suggests a radiant 
15 degrees from the IMO working list positions, I have used that radiant for 
shower associations. Radiant positions are listed for each morning. I projected 
the video radiant backward beyond the start of activity to determine the daily 
radiant position. As I say in the NAMN notes, anyone can request these positions 
in an excel worksheet.

All plotting was done using an alignment cord for maximum accuaracy.

Angular velocity was considered in shower association. F=1.00 throughout.

All times and dates are UT.

UT Date Sept 4

Showers: (RA, Dec, Velocity)
AUR 068, +48, v69 (none observed)
ANT 354, -01, v30
ERI 054, -15, v59
NPI 011, -04, v39 (Sirko's shower 46)
SPE 039, +38, v61
SPX 066, +05, v58 (none observed)
SSL 116, +33, v52 (None observed)

Moon affected first period

UT Time      Teff     LM ANT ERI NPI SPE SPO TOT  M/Hr
0524-0624 0.960 +5.31  3      1     0      0      1      5     5.2
0624-0724 0.950 +5.48  2      0     0      1      1      4     4.2
0724-0824 0.935 +5.53  1      0     1      1      5      7     7.5
0824-0922 0.922 +5.51  0      0      0     0      3      3     3.3
-------------
0524-0922 3.772 +5.45  6      1      1     1      10    19    5.0

Total 19 meteors (5.0/Hr) avg mag +2.47

6 ANT (1.6/Hr) Avg Mag +3.08
1 ERI (0.3/Hr) Mag +0.5
1 NPI (0.3/Hr) Mag +3
1 SPE (0.3/Hr) Mag +4
10 SPO (2.7/Hr) Avg Mag +2.00

Algol was at minimum during the morning, it was interesting to thing I was watching an eclipse from 93 light years away.
11 jets. Only 4 Satellites.
======================

UT Date Sept 7

Showers

AUR 090, +42, v66
SPE 050, +39, v61
ANT 357, +00, v30

UT Time,    Teff      LM   AUR  SPE  ANT  SPO  TOT  Met/Hr
0715-0821 1.030 +5.54    1       0       1        4       6     5.8

Total 6 meteors Avg Mag +2.08

1 AUR (1.0/Hr) Mag +1
1 ANT (1.0/Hr) Mag +2.5
4 SPO (3.9/Hr) Avg Mag +2.25

Post Hanna observations (3.42" rain during the day) 


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