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[vsnet-history 412] SW UMa outburst (Granslo)




Date: Wed, 17 Feb 1993 12:41:34 +0100
From: granslo@argo.uio.no
Subject: SW UMa in outburst

                ***** SW URSAE MAJORIS IN OUTBURST *****

The following observations by undersigned indicate that this dwarf nova
is currently undergoing an outburst:

YYYY MM DD.DDD   OBSERVATION     MAGN  CL  INSTRUM    OBSERVER 
1993 02 16.13      135 > V      <13.5  1   C203,123x  Granslo, B.H.
1993 02 17.111   99+10;114-5     10.9  1   C203,123x  Granslo, B.H.

Time system is Universal Time. CL = class: estimated accuracy of obser-
vation; 1 = good. Instrument (aperture in mm): C = Schmidt-Cassegrain.
The AAVSO sequence has been used. Observer: Bjorn Haakon Granslo,
Nordahl Griegs vei 22 A, N-1472 Fjellhamar, Norway.

High-speed photometry is required during the current outburst in order to
detect superhumps, quasi-periodic oscillations and other short-periodic
phenomena. The last outbursts started on 1991 February 25 and 1992 March 19. 

                                                 Bjorn H. Granslo


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