[en] P. Jenniskens, SETI Institute and Ames Research Center, NASA; and E. Lyytinen, Helsinki, Finland, report that the anticipated outburst of the alpha Monocerotid meteor shower (IAU shower 246, AMO) was observed on 2019 Nov. 22, close to the predicted time (cf. CBET 4692). As in 1995, most video-detected meteors were in the peak brightness range +2 to +0 magnitude. Compared to predictions, the stream was wider and less active, suggesting that the earth passed further from the trail center than in 1995. <P />The low-light video camera network "CAMS Florida" -- coordinated by A. Howell, with stations at Gainesville, New Smyrna Beach (B. Harris), the Florida Institute of Technology (D. Batcheldor and C. Palotai), the College of Central Florida (E. Kisvarsanyi), and in Ocklawaha (J. Cheney) -- triangulated and calculated the orbits of 49 alpha Monocerotid meteors between 4h38m and 5h37m UTC, and centered at 5h02m.4m UTC peak time (cf. website URL http://cams.seti.org/FDL/, for the date of Nov. 22). The full-width-at-half-maximum duration of the shower was 0.52 hr. Tracks were short, with light curves of meteors fainter than +1 magnitude mostly showing a rapid onset and slow decay, while brighter meteors mostly were skewed towards the end -- some showing an end flare. The meteor peak-magnitude distribution was narrow: -2 (0), -1 (1), 0 (9), +1 (18), +2 (18), +3 (3), +4 (0). Observations spanned the period 1h11m-11h19m UTC, and only one alpha Monocerotid meteor was detected outside the outburst interval, as well as 114 other non-shower meteors. <P />The partially clouded "CAMS Chile" network -- coordinated by S. Heathcote (AURA/Cerro Tololo), with stations at Cerro Tololo (J. Rojas) and La Silla (E. Jehin, University of Liege) -- triangulated 20 alpha Monocerotid meteors from 4h31m to 5h31m UTC (centered at 5h03m.1), in good agreement. The La Serena station was cloudy at the time of the outburst. The FWHM duration of the shower was 0.58 hr. The magnitude distribution was as follows: -2 (1), -1 (3), +0 (5), +1 (5), +2 (5), +3 (1), +4 (0). Observations spanned 0h20m- 8h55m UTC, and only one alpha Monocerotid meteor was detected outside the outburst interval, as well as 183 other non-shower meteors.
