COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                    Number 2204

                                 Konkoly Observatory
                                 Budapest
                                 1982 October 5

                                 HU ISSN 0374-0676





  PHOTOGRAPHIC OBSERVATIONS OF THE SUPERNOVA IN NGC 4490



  Photographic observations of the supernova in NGC 4490 (Wild,
1982) were carried out with the 188-cm reflector at Okayama
Astrophysical Observatory and with the 105-cm Schmidt telescope
at Kiso Observatory in May 1982. The observations were made in
B-colour band on Kodak IIaO emulsion. The used B-band filters
were Hoya L35 at Okayama and Schott GG 385 at Kiso. Referring
to the comparison stars of Blanco et al. (1966), the magnitude
was determined with the method of stellar image diameter. The
estimated B-magnitudes of the supernova are as follows:


        Date     UT      Observatory B

       19 May    7h 48m    Okayama   15.0
       24 May   11  40     Kiso      15.5



      T. YAMAGATA
      Department of Astronomy, University of Tokyo,
      Bunkyo-ku, Tokyo 113, Japan

      M. IYE
      Tokyo Astronomical Observatory, University of
      Tokyo, Osawa 2-21-1, Mitaka, Tokyo 181, Japan



References:
Blanco, V.M., Demers, S., Douglass, G.G., and FitzGerald, M.P.,
         1966, Publ. U. S. Naval Obs. 21 [BIBCODE 1968PUSNO..21....1B ]
Wild, P., 1982, IAU Circular No. 3689 [BIBCODE 1982IAUC.3689....1W ]