From Josep Ma. Trigo i Rodriguez, Benicassim (Castello) SPAIN Dept. Astronomy & Astrophysics, University of Valencia Date: Thu, 18 Nov 1999 12:37:48 +0100 Again the Tempel-Tuttle meteors appeared by hundreds. From Spain our congratulations with Drs. David Asher and Robert Mc Naught for their successful prospect on Leonid's 1999 activity. Below you can find our first detailed results. All members of the Spanish Photographic Meteor Network (SPMN) has work the past night in an intensive campaign from five stations of Valencia and Castellon provinces. Also other four stations were established in Madrid and Sevilla. The participating people in our SPMN project are: Joan Ma. Bullon, Juli Castellano, Angela del Castillo, Rodrigo Castillo, Alberto Castro-Tirado, Rafael Ferrando, Jos=E9 Gomez, Antonio Gutierrez, Carles Labordena, Fernando L=F3pez, Carles Pineda, Rafael Ramirez, Julian Ruiz, Natatxa Sanchez and Helena Valero. Here you are our first results. From them considering a aprox. population index value of 2.5 we obtain a preliminary ZHR near to 3000 meteors by hour in the half-hour interval 01h45-02h15 UT. In the maximum the activity surpassed clearly a meteor by second and the continuous bandles difficult the counting. That's way probably our rates in the interval 02h10-02h20 UT are lower that the real meteor level. Please note that due to the high activity from 01h00 up to 03h30 UT we obtain only counts (no magnitude distributions), each observer in different time intervals. In the next hours we send reports from other observers. ------------------------ Preliminary activity reports Observer: Helena Valero-Rodriguez (IMO CODE: VALHE) Observing site: Desert de les Palmes, Castellon, Spain Longitude: E 0=B0 02' 40'' Latitude: 40=B0 04' 55''N , Altitude: 390 meters. November 17-18th 1999 15 min. intervals METEOR SHOWERS Interval TU Teff Lm F LEO SPO=20 0105-0130 0.32 6.00 1.05 80 0 0130-0145 0.24 6.10 1.05 77 1=20 0145-0200 0.24 6.10 1.00 206 0 0200-0215 0.24 6.10 1.00 231 2 0215-0230 0.24 6.10 1.00 164 1 0230-0245 0.24 6.10 1.00 119 0 =20 0245-0300 0.24 6.10 1.00 60 1 Aprox. center of view: RA=3D135=B0 and Dec=3D +45=B0 -------- Observer: Josep M=AA Trigo-Rodriguez (IMO CODE: TRIJO) Dept. Astronomy and Astrophysics, University of Valencia Member of SOMYCE and GEA=20 Observing site: Desert de les Palmes, Castellon, Spain Longitude: E 0=B0 02' 40'' Latitude: 40=B0 04' 55''N , Altitude: 390 meters. November 17-18th 1999 5 min. intervals METEOR SHOWERS Interval TU Teff Lm F LEO SPO=20 0035-0040 0.07 6.10 1.05 6 0 (1Mon) 0040-0045 0.07 6.10 1.05 8 1=20 0045-0050 0.07 6.10 1.11 5 0 0050-0055 0.07 1.11 9 0 0055-0100 0.07 10 0=20 0100-0105 0.07 6.10 1.11 8 1 =20 0105-0110 0.07 12 0 0110-0115 0.07 6.10 1.11 15 0 0115-0120 0.07 6.10 1.11 13 0 0120-0125 0.07 1.05 20 0 0125-0130 0.07 6.20 1.05 55 0 1 minute intervals Interval TU Teff Lm F LEO SPO=20 0145-0146 0.016 6.20 1.00 17 1 0146-0147 14 0 0147-0148 16 0 0150-0151 18 0 0151-0152 16 0 0153-0154 0.016 6.20 1.00 24 0 0157-0158 28 0=20 0201-0202 27 0 0204-0205 37 1 0208-0209 45 0 0209-0210 40 0 0212-0213 49 0=20 0213-0214 58 0 0214-0215 80 1=20 0216-0217 67 0 =20 0217-0218 69 0 0218-0219 0.016 6.20 1.00 54 0 0220-0221 46 1 0223-0224 30 0 0227-0228 32 0 0232-0233 15 0 0236-0237 23 0=20 0244-0245 17 0 0248-0249 0.016 6.20 1.00 18 1 0253-0254 20 0 0300-0301 12 0 0306-0307 16 0 0314-0315 10 0 0319-0320 5 0=20 0320-0321 7 0 0324-0325 6 0 0328-0329 10 0 0338-0339 0.016 6.20 1.00 8 0 0343-0344 4 0 0347-0348 5 1 0349-0350 7 0 0351-0352 5 0 0352-0353 6 0 0357-0358 4 0 0400-0401 7 0 0412-0413 4 0 0414-0415 6 1 Center field of view: RA=3D135=B0 Dec=3D+30=B0 METEOR MAGNITUDE DISTRIBUTION: magnitude vs.(total number, number of persistent trains) Only obtained in the interval 00h25-00h50 UT Note: During the maximum from 02h00 up to 02h25 UT was observed a substantial increase of very faint meteors. Probably more of a 50% were upper +3 magnitude. Leonids (LEO): -2(2), -1(4), 0(2), +1(4), +2(5), +3(6), +4(3), +5(2) Monocerotids (MON): +1(1)