(meteorobs) Ursid and video meteors of December 21/22, 2008

Enrico Stomeo stom at iol.it
Mon Dec 22 16:42:44 EST 2008


I observed during the night of December 21/22 from my location
near Venice. During a Teff of 10.433h, I recorded 64 meteors, 
of which 31 Ursids. 
In http://www.astrovenezia.net/stoen/ursid_2008_hr_stomeo.gif
is a graphic showing the activity of Ursids, computed with 
URS/Teff/sin(Hrad). I find a little burst on December 22,1 UT 
approximately. 

This is the prospect of my observation of December 21/22:

200812 Start End  Teff   vLm   Cf
------------------------------------------------------------------
21.828 1921-2024  1.034 4.40  1.00  Tot:4  SPO:2 URS:2
21.872 2024-2127  1.049 4.40  1.00  Tot:3  SPO:3
21.916 2127-2230  1.049 4.40  1.00  Tot:3  URS:2 *LN:1
21.959 2230-2333  1.049 4.40  1.00  Tot:8  SPO:2 URS:3 *UR:1 *CB:2
22.003 2333-0036  1.049 4.40  1.00  Tot:6  SPO:3 URS:2 *UR:1
22.047 0036-0139  1.048 4.40  1.00  Tot:8  SPO:5 *UR:2 *CB:1
22.091 0139-0242  1.046 4.30  1.00  Tot:14  SPO:2 URS:6 *UR:5 COM:1
22.134 0242-0345  1.047 3.60  1.02  Tot:9  SPO:2 URS:1 *UR:3 *CB:2 *TG:1
22.178 0345-0448  1.048 3.40  1.11  Tot:5  SPO:2 *UR:1 *CB:2
22.221 0448-0549  1.015 3.58  1.01  Tot:4  SPO:2 URS:1 *UR:1
------------------------------------------------------------------
*** UT 1921-0549  10.433 4.13  1.01  Tot:64

RADIANTS  (name, radiant, max, shift, vel) 
SPO: 23         Sporadics 
URS: 17         Ursids-IMO  217,75  Dec.23 0.0,0.0 33
*UR: 14         Ursids  220,75  Dec.22 0.0,-0.4 33
*CB: 7          COM  167,27  Dec.25 +0.8,-0.2 65
COM: 1          Coma-Berenicids-IMO  194,17  Jan.10 +0.8,-0.3 65
*TG: 1          theta-GEM  098,31  Dec.25 +1.3,+0.2 26
*LN: 1          Lyncids  138,43  Dec.21 +1.0,-0.1 50

MAGNITUDE DISTRIBUTION
Tot : 1.5(-2) 2(-1) 12(0) 26.5(1) 22(2)  mean: 1.02

SPO : 0.5(-1) 2.5(0) 11.0(1) 9.0(2)  mean: 1.24
URS : 0.5(-1) 4(0) 7.5(1) 5.0(2)  mean: 1.00
*UR : 1.5(-2) 0.5(-1) 1.5(0) 5.0(1) 5.5(2)  mean: 0.89
*CB : 3.0(0) 2(1) 2(2)  mean: 0.86
COM : 0.5(-1) 0.5(0)  mean: -0.50
*TG : 0.5(0) 0.5(1)  mean: 0.50
*LN : 0.5(1) 0.5(2)  mean: 1.50

NOTES
Moon from 1921 UT to 1154 UT
-2m Ursid at 022759 UT

Obs: Enrico STOMEO (STOEN)
Loc: Scorze'(VE), Italy, +45.56726 -12.11395 +20 (IMO code 14083)
VideoCamera ccd: MIN38 Ob.3,8 (zenithal field 89.2x68.6) + MetRec_41




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