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IAUC 3317: Prob. COMET; EW Lac; WRA 977

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                                                  Circular No. 3317
Central Bureau for Astronomical Telegrams
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

     R. M. West, European Southern Observatory, reports that he has
found a probable comet trail on a 120-min red exposure by H.-E.
Schuster with the 100-cm Schmidt telescope:

     1978 UT             R. A. (1950) Decl.        m1
     Nov. 30.07887     1 47 17.5    -40 43 26      18

Daily motion: dR.A. = +/- 0m.53, dDecl. = + 1'.4  There was a tail 1' long
to the west-northwest.  No confirmation is available.

     P. Hadrava, P. Harmanec, P. Koubsky, J. Krpata and F. Zdarsky,
Ondrejov Observatory, report: "The shell spectrum of EW Lac, stable
from 1926 to the end of 1977 (V/R ~ 1, radial velocity between -10
and -25 km/s without notable progression), suffered a strong change
recently.  A coude spectrogram on Dec. 5 shows V/R >> 1 for H and
Fe II lines.  The following velocities (in km/s) have been found:

       1978 UT          H4      H5       H15-H21        Fe II
       July  7.912     -27     -20     +4.3 +/- 2.9      + 6
       Dec.  5.869     -27     - 6     -5.7 +/- 0.8      - 5

Activity similar to that shown by zeta Tau or 48 Lib is to be expected,
and further monitoring is desirable."

WRA 977
     M. Pakull, European Southern Observatory, communicates: "New
photometric observations of WRA 977, the optical counterpart of 4U
1223-62, are combined with earlier results (Bord et al. 1976, Astrophys.
J. 203, 689; Hammerschlag-Hensberge et al. 1976,  Astron. Astrophys.
49, 321; van Genderen 1977, ibid. 54, 733) to establish an
ellipsoidal lightcurve with a period of 22.60 +/- 0.02 days (2-sigma) and
a full amplitude of 0.04 magnitude.  This period also shows up in
the individual data sets.  A comparison with Mauder et al.'s (1978,
Mitt. Astron. Ges. 43, 227) radial-velocity curve suggests that superior
conjunction (x-ray source behind) occurred on 1978 July 7.6
+/- 1.1 UT.  No periodic signal can be distinguished at 40.8 days
(White et al. 1978, Monthly Notices Roy. Astron. Soc. 184, 67P) or
its harmonics."

1978 December 22               (3317)              Brian G. Marsden

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