Denis Buczynski and Luca Buzzi have this
morning independently reported a strong outburst from
29P/S-W1.
The object appears to have brightenened
from 17.0R to 12.9R.
The event took place on 2020 07 26.89
+/-0.13.
This is the brightest seen since 2018 September 23,
which reached 12.2R.
Since that time a total of 37 outbursts have
been identified, the large majority being mini-outbursts (amplitude <1.0
mag).
Also out of these 37, only 3 had attained a
magnitude brighter than 14.0R before today's reported event.
The outburst was picked up through a
photometric monitoring campaign conducted by a group of amateur astronomers
which has been ongoing since 2014.
Here are the latest observations:
0029P C2020 07
26.13632 02 45 10.54 +25 29
50.5 17.0
R
L09
0029P C2020 07 26.14079
02 45 10.66 +25 29 52.3
17.0 R L09
0029P
KC2020 07 26.68996 02 45 24.09 +25 31
40.0 17.1
R
E94
0029P KC2020 07 26.73162 02 45
25.07 +25 31 48.9 16.9
R
E94
0029P KC2020 07 26.73438 02 45
25.14 +25 31 48.8 16.9
R E94
0029P C2020 07
27.05578 02 45 32.99 +25 32
50.0 12.6
R
I81
0029P C2020 07 27.05867
02 45 33.08 +25 32 50.6
12.6 R I81
0029P
KC2020 07 27.08380 02 45 33.68 +25 32
56.1 13.0
R
204
0029P KC2020 07 27.08645 02 45
33.74 +25 32 56.5 12.9
R
204
0029P KC2020 07 27.09802 02 45
34.02 +25 32 58.9 13.0
R 204
----- end -----
Observers / (Locations):
L09 - R. Miles (S.Africa)
E94 - J. Drummond (N. Zealand)
I81 = D. Buczynski (UK)
204 = L. Buzzi (Italy)
Further observations are encouraged.
N.B. - A second outburst can follow within an
interval of 5-10 days.
Richard Miles
BAA