[BAA Comets] Brightest outburst of Comet 29P since 2010

[Richard Miles]

I can confirm that enigmatic comet 29P/Schwassmann-Wachmann has undergone a 
second strong outburst within the space of 4 days.
This time the inner coma (5.7" radius) has reached an r' magnitude of 12.1 
which is the brightest such event since 2010 February 02.

The time of this latest outburst was 2017 August 27.20 +/-0.05 (see data 
below).

Observers should keep a close watch on the comet as it is highly probable 
that this event will trigger further outbursts from the nucleus during the 
coming days. Furthermore, given the strength of the current outburst, we 
should see a major coma development as the debris from the eruption expands 
into the vacuum of space.

Richard Miles
BAA
----------------------
Recent r'-filter observations using Las Cumbres Observatory network of 
telescopes, and others by A. Maury, J.-B. de Vanssay, J.-F. Soulier from W96 
(unfiltered) in Chile are as follows:

0029P       C2017 08 25.97201 21 16 11.65 -14 20 37.7     14.22N      W96
0029P       C2017 08 25.99684 21 16 11.01 -14 20 39.7     14.22N      W96
0029P       C2017 08 26.02230 21 16 10.33 -14 20 41.9     14.24N      W96
0029P       C2017 08 26.04773 21 16 09.62 -14 20 43.8     14.23N      W96
0029P       C2017 08 26.07310 21 16 08.90 -14 20 45.4     14.23N      W96
0029P       C2017 08 26.10208 21 16 08.13 -14 20 47.9     14.23N      W96
0029P       C2017 08 26.12750 21 16 07.44 -14 20 50.0     14.25N      W96

0029P       C2017 08 26.32691 21 16 02.10 -14 21 04.3     14.41N      W87
0029P       C2017 08 26.32879 21 16 02.06 -14 21 04.0     14.45N      W87
0029P       C2017 08 26.33068 21 16 01.99 -14 21 04.9     14.41N      W87

0029P       C2017 08 26.67065 21 15 52.99 -14 21 29.4     14.65N      Q64

0029P       C2017 08 26.95114 21 15 45.61 -14 21 50.0      14.71N      K93
0029P       C2017 08 26.95302 21 15 45.52 -14 21 50.9      14.65N      K93
0029P       C2017 08 26.95491 21 15 45.46 -14 21 51.1      14.64N      K93

0029P       C2017 08 26.97237 21 15 45.11 -14 21 52.5     14.49N      W96
0029P       C2017 08 26.99702 21 15 44.45 -14 21 54.1     14.48N      W96
0029P       C2017 08 27.02251 21 15 43.78 -14 21 56.4     14.46N      W96
0029P       C2017 08 27.04807 21 15 43.05 -14 21 58.0     14.47N      W96
0029P       C2017 08 27.07357 21 15 42.38 -14 22 00.1     14.46N      W96
0029P       C2017 08 27.10995 21 15 41.36 -14 22 03.0     14.47N      W96
0029P       C2017 08 27.12802 21 15 40.88 -14 22 04.2     14.50N      W96

0029P       C2017 08 27.26250 21 15 37.42 -14 22 12.4     12.27N      W85
0029P       C2017 08 27.26438 21 15 37.37 -14 22 12.6     12.26N      W85
0029P       C2017 08 27.26627 21 15 37.32 -14 22 12.7     12.25N      W85

0029P       C2017 08 27.83445 21 15 22.53 -14 22 54.4     12.09N      K93
0029P       C2017 08 27.83634 21 15 22.49 -14 22 54.7     12.08N      K93
0029P       C2017 08 27.83823 21 15 22.44 -14 22 54.7     12.08N      K93

0029P       C2017 08 27.96871 21 15 19.08 -14 23 04.4     12.52N      W96
0029P       C2017 08 27.99339 21 15 18.44 -14 23 06.3     12.50N      W96
0029P       C2017 08 28.01877 21 15 17.77 -14 23 08.1     12.53N      W96
0029P       C2017 08 28.04426 21 15 17.09 -14 23 10.2     12.47N      W96
0029P       C2017 08 28.06959 21 15 16.41 -14 23 11.9     12.57N      W96
0029P       C2017 08 28.09860 21 15 15.65 -14 23 14.0     12.51N      W96
0029P       C2017 08 28.12400 21 15 14.95 -14 23 15.9     12.54N      W96

0029P       C2017 08 28.24977 21 15 11.63 -14 23 24.7     12.13N      W87
0029P       C2017 08 28.25166 21 15 11.58 -14 23 24.6     12.13N      W87
0029P       C2017 08 28.25355 21 15 11.52 -14 23 24.8     12.13N      W87