(meteorobs) VANMC 12-13 August

[Michel Vandeputte]

Day : 12-13     Month : August     Year : 2005 
begin : 20.00 UT    End : 03.15 UT
Location : Reillane (near Forcalquier) - dep Hautes Alpes de Provence   Country : France   long. 5.7 E    lat   44 N - alt  600 m
Observer : Michel Vandeputte    IMO code : VANMC
Method :  Visual observations - tape recorder. 


Observed Showers : 

Perseids  : alfa 48° / delta : +59°
Southern Aquarids : alfa 351° / delta ; -12°
Northern Aquarids : alfa 337° / delta : -05°
Kappa Cygnids : alfa : 285° / delta ; +59°
Southern iota aquarids : alfa : 342° / delta : -13°
Northern iota Aquarids : alfa 337° / delta : -4°
late capricornids 

Interval analyse 

Periods    Teff        F        Lm               PER    CAP    AQR    KCG    SPOR

20.00-20.30    0.50    1.00    6.50        14        1        0        0        7
20.30-21.00    0.50    1.00    6.60        17        0        0        0        4
21.00-21.30    0.50    1.00    6.70        16        0        0        0        9
21.30-22.00    0.50    1.00    6.70        20        0        0        0        12
22.00-22.30    0.50    1.00    6.80        28        0        0        0        6
22.30-23.00    0.50    1.00    6.80        30        0        1        0        5
23.00-23.30    0.50    1.00    6.80        38        0        0        1        4
23.30-00.00    0.50    1.00    6.80        39        0        0        1        7
00.00-00.30    0.50    1.00    6.90        42        0        0        1        8
00.30-01.00    0.50    1.00    6.90        44        0        0        0        7
01.00-01.30    0.50    1.00    6.90        47        0        0        0        13
01.30-02.00    0.50    1.00    6.90        58        0        0        0        14
02.00-02.30    0.50    1.00    6.90        54        0        0        0        17
02.30-03.00    0.50    1.00    6.85        39        0        0        0        6
03.00-03.15    0.25    1.00    6.70        20        0        0        0        3

20.00-03.15    7.25                                506      1        1        3        122

                  
        
Magnitude distributions

Perseids 

-12(1)
-8(1)
-5(1)
-4(2)
-3(1)
-2(3)
-1(10)
+0(19)
+1(37)
+2(88)
+3(148)
+4(142)
+5(53)

Mean magnitude : 2.89.
persistent trains : 175 (=34.5%)

KCG   +0(0)+1(0)+2(0)+3(2)+4(1)+5(0) mean 3.33 N~ : 0
CAP   +0(0)+1(0)+2(0)+3(1)+4(0)+5(0) mean 3.00 N~ : 0
AQR   +0(0)+1(0)+2(0)+3(1)+4(0)+5(0) mean 3.00 N~ : 0
SPOR +0(1)+1(2)+2(7)+3(33)+4(58)+5(21) mean 3.70 N ~ : 5

Summary night

Teff : 7.25 hours 
total meteors : 633 meteors 
Perseids : 506 
Kappa Cygnids : 3
Aquarids : 1
Capricornids : 1
Sporadics : 122

Remarks

Third night of the expedition. Main maximum. Good observing conditions : LM 6.90, dry air.  The Perseid activity started slowly, there were no many earth grazing Perseids in the beginning. After 01 UT activity really exploded, so the Perseids definitely gave us a good show, but not as spectacular as 2004. Many weak meteors this year. I've got a hourly count of 112 Perseids between 1.30 and 2.30 UT. After 2.30 UT the activity decreased. Two famous fireballs ; a minus 8 and...one minus -12 (or brighter ??) ; she was so powerful that the whole field and surroundings came  visible as it was daylight...


Kind regards,

Michel Vandeputte
VVS Belgium meteor section
Dutch Meteor Society