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IAUC 3655: Poss. COMET SHCHERBANOVSKIJ; HDE 245770; PU Vul; Notice

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IAUC number 

                                                  Circular No. 3655
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM     Telephone 617-864-5758


POSSIBLE COMET SHCHERBANOVSKIJ
     G. R. Kastel', Institute for Theoretical Astronomy, Leningrad,
communicates a report from I. M. Kopylov, Special Astrophysical
Observatory, Zelenchukskaya, of the possible discovery of a comet by
A. L. Shcherbanovskij, as follows:

     1981 UT          R. A. (1950) Decl.      m1
     Dec. 19.91042    9 57.2     +29 59       16
          22.88472    9 56.8     +29 43       17

The object is diffuse, with neither condensation nor tail.


HDE 245770
     C. Bartolini, A. Bonifazi, A. Guarnieri and A. Piccioni,
Istituto di Astronomia, University of Bologna; and A. Giangrande and F.
Giovannelli, Istituto di Astrofisica Spaziale, Frascati, telex: "A
preliminary inspection of spectra of HDE 245770 = A0535+26 obtained
with the Bologna l.5-m telescope at Loiano between Oct. 31 and Dec.
17 reveals unusual activity for this star.  H-alpha, H-beta, H-gamma and He I
587.6-nm lines are strongly in emssion.  The emission features have
weakened in recent days, but Ha and He I remain strong.  UBV
photoelectric photometry during the same period shows a fading of ~ 0.2
mag with respect to the practically constant luminosity of the last
five years.  It seems probable that the Be star is experiencing a
shell ejection.  This hypothesis is also supported by the presence
of unusual absorption features, which were particularly strong on
Dec. 6."


PU VULPECULAE
     Visual magnitude estimates by G. M. Hurst, Wellingborough,
England: July 2.97 UT, 9.2; 7.94, 8.8; 18.97, 8.6.


NOTICE TO CONTRIBUTORS
     The recording machine attached to the Central Bureau's telephone
number 617-864-5758 has now been repaired.  However, communication
by telex/TWX or telegram/cablegram to the TWX number 710-320-6842
(answerback ASTROGRAM CAM) is to be preferred.


1981 December 28               (3655)              Brian G. Marsden

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