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             THE ROYAL ASTRONOMICAL SOCIETY OF CANADA

                     COMET AND NOVA SECTION

                                                       Announcement #10

                         TWO NEW COMETS

COMET IKEYA-SEKI  (1965f)

     Ikeya and Seki, two amateur astronomers in Japan, discovered this
     eighth magnitude comet on September 18. It will be visible in
     small telescopes in the morning sky during October as it moves from
     Hydra to Corvus. The following preliminary ephemeris was taken
     from I.A.U. Circular 1924, and could be in error by several degrees.

                      1965         R.A.(1950) Decl.
                                     h  m      °   '
                      Sept. 27      09 20.2  -10 40
                      Oct.   7      10 08.8  -13 01
                            17      10 59.0  -14 51
                            27      11 49.6  -15 59
                      Nov.   6      12 39.2  -16 23


COMET ALCOCK  (1965h)

     British amateur astronomer G.E.D. Alcock discovered this tenth mag-
     nitude octet on September 26.   No ephemeris is available but the
     comet is currently in the "square" of Hercules, and visible in the
     evening sky. The following two positions were received on I.A.U.
     Circulars 1923 and 1924, and estimated positions may be determined
     by extrapolation.

                      1965         R.A.(1950) Decl.
                                     h  m      °   '
                      Sept.26.885   16 54.0   +35 02  Mag.10
                           27.823   16 57.7   +34 22  Mag.10

                      Daily motion      3.7   - 0 40



The undersigned will send instruction toxins for observations of comets, upon
request.

Please send reports of observations of these comets as soon as possible.



                                            Jim Low, National Coordinator,
                                            Comet and Nova Section,
                                            Standing Committee on Observational
                                                         Activities,
                                            108 Roy Avenue, Apt. 102,
September 30, 1965                          Dorval, P.Q.