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ATEL # 2574; Mark Kidger (Herschel Science Centre, European Space Agency European Space Astronomy Centre)
on 19 Apr 2010; 15:48 UT
Distributed as an Instant Email Notice (Comets)
Password Certification: Mark Kidger (email@example.com)
Subjects: Comets, Solar System Objects
Further observations of the outburst od 29P/Schwassmann-Wachmann 1 show it is following the normal pattern. The observed brightness in a 10" square aperture peaked on 2010 Apr. 16 and has started to decline, as shown by a large number of observations on 2010 Apr. 17 & 18. Mean magnitudes and MPC Site codes of observers are: 2010 Apr. 16, R=12.80+/-0.03 (MPC A06, 213, C12, J38); Apr. 17, R=12.89+/-0.03 (MPC C12, 213, J47, J24, J38); Apr. 18, R=13.13+/-0.03 (MPC A06, 213 [2 observations], A02 [2 observations]). The magnitude was unchanged in a 20" square aperture between Apr. 17 & 18 and was still brightening slowly in a 30" square aperture on Apr. 18.
Evolution of the present outburst of 29P