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\IBVShead{4183}{13 April 1995}                      % Use it with dummy or empty arguments

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\title{A NEW SEMIREGULAR VARIABLE S\,10934 IN CORONA BOREALIS}

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When searching for an optical counterpart of the BATSE gamma-ray burst source
920525 B (0\fh 41\fm 8 UT) at the improved position (Greiner, 1994) on a
Sonneberg Sky Patrol plate taken by B. Fuhrmann 1.7 hours before eruption, I
discovered a new semiregular variable at the following position (1950.0)
within the error box of the gamma source:
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\centerline{$\alpha$ = 15\fh 49\fm0, \ \ \ $\delta$ +31\degr 38\farcmm.}
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The object is easily localized by   its brightness and red colour on the POSS
sheets no.\,121.

On a sample of 120 patrol plates taken  between 1962 and 1965 by H. Huth I
found an average cycle length of 60 days and amplitude of 1.7 mag in the
photographic band (10\fm 9-12\fm 6; Mt. Wilson system of Selected Area 35).
The light-curve is partly sine shaped, partly characterized by sharper minima, 
and partly more irregular. On a Sonneberg 50/70/172cm Schmidt camera objective
prism plate taken 1962 April 12.0 UT by W. G\"otz the spectral type can be 
determined as M8.

There is at present no hint that either this variable or one of the variables
formerly detected in the region of the error box (e.g. X CrB, RT Boo, Z CrB) 
can be physically related with the gamma-ray burst source.

This work has been supported by funds of the German Bundesministerium f\"ur
Forschung und Technologie under contract no. 05-2SO52A.
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W. WENZEL
Sternwarte
D-96515 Sonneberg
Germany
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Reference:

Greiner, J., 1994, unpublished

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\centerline{\bf ERRATUM}
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In the No.\,4134 issue of the IBVS all ephemerides of VW CVn refer to normal maxima  
and not Min I (as stated erroneously in the text). The authors of that note and
editors of the IBVS are grateful to Dr. N. Samus for calling their attention to 
this inconsistency.


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