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IAUC 2739: beta Per; SU Tau; 1974f

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IAUC number 

                                                  Circular No. 2739
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK
Western Union: RAPID SATELLITE CAMBMASS


beta PERSEI
     D. Gibson, National Radio Astronomy Observatory, reports a
large radio outburst of beta Per (Algol).  During a 4-hr interval
ending on Jan. 16.0 UT the flux density increased from 0.4 to 1.0 Jy
at 8085 MHz and from 0.1 to 0.25 Jy at 2695 MHz.


SU TAURI
     Mrs. Janet Mattei, Director of the American Association of
Variable Star Observers, reports that E. Mayer (Barberton, Ohio)
estimated this star at visual magnitude 12.5 on Jan. 15.07 UT.
Observations by AAVSO members, as well as at the Wilhelm Foerster
Observatory, Berlin, indicate that the star was around magnitude
11-12 at the beginning of December.


PERIODIC COMET HONDA-MRKOS-PAJDUSAKOVA (1974f)
     The following precise positions have been reported:

     1974/75 UT          R. A. (1950) Decl.        m1    Observer
     Dec.   6.37951   19 42 49.51   -14 00 26.4   10     Urata
            7.37014   19 45 53.13   -14 04 51.2   10       "
           16.38819   20 14 28.93   -15 06 44.8    8.9   Seki
     Jan.   3.37523   21 05 04.62   -22 39 12.0    7.5   Urata

T. Urata (Nihondaira Observatory).  15-cm f/6 reflector.  From
   Nihondaira Obs. Circ. No. 624.
T. Seki (Kochi Observatory, Geisei Station).  From Orient. Astron.
   Assoc. Comet Bull. No. 96.

     The following total visual magnitude estimates have been
reported: 1974 Dec. 18.96, 8.9 (J. Bortle, Brooks Observatory, 32-cm
reflector); 22.95, 8.8: (Bortle); 25.09, 8.9 (B. Comsa, West Covina,
California, 25-cm reflector); 26.96, 8.6: (Bortle); 27.09, 9.2
(Comsa); 28.95, 8.3 (Bortle); 28.98, 8.5 (D. Green, Boone, North
Carolina, 20-cm reflector); 30.09, 8.3 (Comsa); 30.95, 8.0 (Bortle);
1975 Jan. 1.00, 7.7 (Green); 1.98, 7.7 (Green); 2.95, 7.8 (Bortle);
2.99, 7.8 (Green); 4.01, 7.4 (C. Sherrod, North Little Rock, Arkansas,
15-cm refractor).


1975 January 16                (2739)              Brian G. Marsden

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