(meteorobs) [meteorobs] Remarkable activity of Perseids on July ?

Bernd Brinkmann bernd.brinkmann at fh-bochum.de
Fri Jul 23 01:42:45 EDT 2010


Hello Enrico,

for me and my camera HERMINE, SiteCode 16058 in Herne, Ruhrarea, Germany it was 
the same. See the statistic output of MetREC:

start of observation     : 2010/07/16 20:34:38
end of observation       : 2010/07/17 02:48:59
effective observing time : 4 h 30 m 28 s
# active meteor showers  : 5
# observed meteor showers: 2
# observed meteors       : 15
Sporadics (SPO)          : ä=9, í=0.7 mag
alpha-Capricornids (CAP) : ä=2, í=1.2 mag
Perseids (PER)           : ä=4, í=1.2 mag
Antihelion (ANT)         : ä=0
Piscis-Austrinids (PAU)  : ä=0
S-delta-Aquarids (SDA)   : ä=0

start of observation     : 2010/07/17 20:24:13
end of observation       : 2010/07/18 02:49:59
effective observing time : 6 h 25 m 27 s
# active meteor showers  : 5
# observed meteor showers: 1
# observed meteors       : 19
Sporadics (SPO)          : ä=18, í=1.4 mag
alpha-Capricornids (CAP) : ä=0
Piscis-Austrinids (PAU)  : ä=1, í=0.8 mag
Antihelion (ANT)         : ä=0
Perseids (PER)           : ä=0
S-delta-Aquarids (SDA)   : ä=0

start of observation     : 2010/07/18 20:22:12
end of observation       : 2010/07/19 02:51:59
effective observing time : 6 h 29 m 31 s
# active meteor showers  : 5
# observed meteor showers: 3
# observed meteors       : 32
Sporadics (SPO)          : ä=25, í=1.3 mag
Antihelion (ANT)         : ä=3, í=1.2 mag
Perseids (PER)           : ä=3, í=1.5 mag
alpha-Capricornids (CAP) : ä=1, í=2.0 mag
Piscis-Austrinids (PAU)  : ä=0
S-delta-Aquarids (SDA)   : ä=0

Before 17.07. no PER will be recognized by MetREC because only then the activity 
time in the shower list starts. I will investigate this.

Clear skies
Bernd


> Date: Thu, 22 Jul 2010 13:03:02 +0200
> From: Enrico Stomeo <stom at iol.it>
> Subject: (meteorobs) Remarkable activity of Perseids on July ?
> To: meteorobs at meteorobs.org
> Message-ID: <4C1A26450243E68F at smtp205.alice.it> (added by
> 	postmaster at alice.it)
> Content-Type: text/plain; charset="us-ascii"
> 
> >From our video meteor data results a remarkable activity of 
> meteors, apparently Perseids, from a radiant near alpha_CAS 
> during the nights of July 14/15, 15/16 and 16/17.
> The radiant area was very close to theoretical radiant of
> Perseids.
> 
> These meteors result from the first data collected from 5
> video cameras of 3 stations of our team (UAI-sm):
> --- Obs: Enrico STOMEO (STOEN)
> Loc: Scorze'(VE), Italy, +45.567 -12.114 +20 (IMO code 14083)
> VideoCam: SCO38 Ob.3,8 f:0,8 (field 89.2x68.6) + MetRec_41
> VideoCam: MIN38 Ob.3,8 f:0,8 (field 89.2x68.6) + MetRec_41
> VideoCam: NOA38 Ob.3,8 f:0,8 (field 89.2x68.6) + MetRec_41
> --- Obs: Stefano CRIVELLO (CRIST)
> Loc: Genova (GE), Italy, +44.418 -8.998 +10 (IMO code 14024)
> VideoCam: C3P8 Ob.3,8 f:0,8 (field 89.2x68.6) + MetRec_41
> --- Obs: Maurizio ELTRI (ELTMA)
> Loc: Venezia (VE), Italy, +45.413 -12.37 +10 (IMO code 14230)
> VideoCam: MET38 Ob.3,8 f:0,8 (field 89.2x68.6) + MetRec_41
> 
> On the linked gnomonic maps, we have plotted for each night 
> all these meteors filmed by our cameras:
> http://meteore.uai.it/m2010/July_14-15.gif
> http://meteore.uai.it/m2010/July_15-16.gif
> http://meteore.uai.it/m2010/July_16-17.gif
> The two crosses on the maps indicate the theoretical 
> radiants of Perseids (rad. 45/+58 Aug.12, shift +1.3/+0.2, 
> Vel 59) and of July CASs (rad. 00/+56 Jul.21, shift +1.2/
> +0.3, Vel 58).
> 
> The increase of activity of this radiant area is clear:
> ----------------------------------------
> July 14/15
> Teff=6.65h Tot=27 PER=3 (cam Sco38)
> Teff=6.65h Tot=34 PER=6 (cam Min38)
> Teff=6.66h Tot=39 PER=6 (cam Noa38) 
> Teff=6.58h Tot=28 PER=5 (cam C3p8)  
> Teff=5.27h Tot=17 PER=3 (cam Met38)
> approximate radiant 005.5,+50.9
> ----------------------------------------
> July 15/16
> Teff=6.49h Tot=46 PER=6 (cam Sco38)
> Teff=6.52h Tot=46 PER=7 (cam Min38)
> Teff=6.53h Tot=33 PER=4 (cam Noa38) 
> Teff=4.03h Tot=17 PER=4 (cam C3p8)  
> Teff=5.40h Tot=11 PER=3 (cam Met38)
> approximate radiant 006.2,+51.4
> ----------------------------------------
> July 16/17
> Teff=6.70h Tot=62 PER=6 (cam Sco38)
> Teff=6.72h Tot=40 PER=5 (cam Min38)
> Teff=6.73h Tot=29 PER=3 (cam Noa38) 
> Teff=6.61h Tot=25 PER=6 (cam C3p8)  
> Teff=6.44h Tot=23 PER=4 (cam Met38)
> approximate radiant 007.9,+52.1
> ----------------------------------------
> July 17/18
> Teff=4.53h Tot=14 PER=1 (cam Sco38)
> Teff=5.66h Tot=11 PER=0 (cam Min38)
> Teff=4.53h Tot=07 PER=0 (cam Noa38) 
> Teff=6.25h Tot=14 PER=3 (cam C3p8)  
> ----------------------------------------
> On July 18/19 the activity of this radiant-area was of 
> no value.
> 
> Please, check your observational data of these nights.
> 
> Best,
> Enrico Stomeo

Bernd Brinkmann

Sternwarte Herne, MPC code A18
Herne, Germany

e-mail: info at sternwarte-herne.de
http://www.sternwarte-herne.de




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