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[vsnet-history 759] SN 1993J (Yamaoka visual)


Date: Sun, 18 Apr 93 20:31:18 +0900
From: Hitoshi Yamaoka <yamaoka@apsun1.astron.s.u-tokyo.ac.jp>
Subject: visual observation 

H. Yamaoka, Kyushu University, Japan, made the estimate of a visual magnitude 
of SN 1993J at Apr. 17.500, using 20-cm Dobsonian (refl.) telescope. Assuming 
that the visual magnitudes of star A and B are 11.4 and 11.9, respectingly, 
he got that the SN magnitude was 11.0. This estimate is done with 
extrapolation, so I think it is less precise.

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