Meteors

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Meteor observations: 2007

Date T.eff LM SHO SPO Total 1 Total 2 NR
Session
Loc Fireballs (-3>) Remarks
23/24-01 2,13 6,5 3 26 29 51730 689 ERM -4 SPO
25/26-03 2,15 6,4 1 13 14 51744 690 ERM
07/08-04 1,17 6,4 1 6 7 51751 691 ERM
14/15-04 2,90 6,4 7 24 31 51782 692 ERM
15/16-04 3,58 6,5 9 30 39 51821 693 ERM
19/20-04 0,13 6,5 0 3 3 51824 694 ERM
20/21-04 2,33 6,1 12 18 30 51854 695 ERM
21/22-04 3,25 6,5 26 33 59 51913 696 ERM -3 Lyr, -5 SPO
22/23-04 1,88 6,3 24 15 39 51952 697 ERM
14/15-07 1,03 6,5 2 10 12 51964 698 ERM
15/16-07 1,04 6,4 2 6 8 51972 699 ERM
18/19-07 2,22 6,5 13 22 35 52007 700 ERM
22/23-07 3,23 6,5 17 28 45 52052 701 ERM
05/06-08 1,17 6,5 7 10 17 52069 702 ERM -3 PER Maan
10/11-08 2,77 6,6 50 30 80 52149 703 ERM -3 PER
11/12-08 4,76 6,7 171 67 238 52387 704 GRO
12/13-08 4,29 6,6 302 65 367 52754 705 GRE 2x-3P,-4KCG,-6KCG Perseid outburst?
15/16-09 2,82 6,3 7 27 34 52788 706 ERM
07/08-10 0,75 5,4 1 3 4 52792 707 ERM
13/14-10 4,73 6,5 23 57 80 52872 708 ERM
14/15-10 4,46 6,6 28 46 74 52946 709 ERM
19/20-10 3,67 6,6 70 46 116 53062 710 ERM -6 STA,2x -4 ORI Orionid outburst
21/22-10 5,57 6,6 267 84 351 53413 711 ERM -3 ORI Orionid outburst
22/23-10 2,00 6,4 62 19 81 53494 712 ERM Orionid outburst
07/08-11 1,05 6,0 5 6 11 53505 713 ERM
14/15-11 1,03 6,2 4 10 14 53519 714 ERM
16/17-11 2,25 6,4 15 23 38 53557 715 ERM
17/18-11 5,54 6,6 73 80 153 53710 716 ERM -3 LEO Leonid outburst
13/14-12 7,85 6,7 833 71 904 54614 717 VID 2x -3 GEM Portugal
14/15-12 7,42 6,6 490 69 559 55173 718 VID 15x-3/-8 GEM Portugal
21/22-12 1,80 5,0 9 5 14 55187 719 ERM
31 session 91,13 2534 952 3486 55187 710 4 31 fireballs

Locations:
Ermelo, the Netherlands (52.2 north, 5.4 east)
Gronau/Gildehausen, Germany (52.2 north, 7.0 east)
Grevesmühlen (53.8 north, 11.1 east)
Videnha, Portugal (38.5 north, 7.7 west)

The year in images and words
Great year ! This year many succesfull observations. The first one were the Lyrids with clear nights 20/21 and 21/ 22 April. Some fireballs were seen. In 2007 I observed three (!) meteor outbursts. The first one were the Perseids (and is problaby caused by the passage of a dusttrail formed during the passage of comet 103P/Swift -Tuttle in 1479) , Orionids (ZHR 90 instead of the normal 20) and Leonids (ZHR 25 instead of the normal 15, activity of the filament structure of comet 55P/Tempel-Tuttle). Also the kappa Cygnids showed good activity in 2007.


Picture 1: Koen and Carl at the observation site at Grevesmühlen.
Foto credits: Carl Johannink.


Picture 2: composition of the Perseids captured with a Canon EOS 40D and a Canon EF 15 mm F 2.8 fish eye lens. Mount: Vixen Photoguider type 2. In the left corner of this image 2 kappa Cygnids are visible, a -2 and a -6 KCG. The bright Perseid above Auriga was estimated at magnitude -4.


Picture 3: Koen and his Vixen Photoguider


Picture 4: -3 Orionid captured on 22 oktober 2007 at COSMOS public observatory, Lattrop.


Picture 5: 23 oktober 2007, a -1 Orionid captured from the Groevenbeekse Heide near Ermelo.


Picture 6: -3 Leonid captured in the morning of 18 november 2007. Location: Ermelose heide near Ermelo.
Also visible is the zodiacal light (also visual seen), seldom seen from the Netherlands!

But the real fireworks came in December: the Geminids. Because of the poor weather predictions for the Netherlands around 13 december we decided to do a last minute action, just like the Leonids 2000. So this year we flew (we = Carl Johannink, Simon Verkerken, Inneke Verkerken, Michel Vandeputte and Koen Miskotte) to Lisboa and traveled with a hired car to the lovely town of Evora,central Portugal. There we could observe the Geminids for three nights 12/13 (only Michel and Simon), 13/14 and 14/15 December.
The night 13/14 december we observed the maximum. I counted 900 meteors, most weak Geminids which is normal during the maximum of the Geminids. Next night (14/15 december) we could observe the descending branch of the Geminid meteor stream. This year we saw during this night an extremely amount of Gemini fireballs. As a group we counted 20 Geminids of magnitude -3 to -8.


Picture 7: looking for a good observing site near Evora, Portugal.


Picture 8: compostion of Geminids captured during the night 13/14 december 2007.


Picture 9: site seeing in Evora, remnants of a Roman temple.


Picture 10: composition of bright Geminids during the night 14/15 december 2007. Bang, bang: two brilliant -5 Geminids and five weaker Geminids captured on 15 december between 01:07 en 01:50 UT.


Picture 11: grouphoto of the Geminids 2007 fltr: Koen Miskotte, Carl Johannink, Simon Vanderkerken, Inneke Vanderkerken and Michel Vandeputte.

 

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