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IAUC 5680: 1992a1; EY Cyg; 1992l

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                                                  Circular No. 5680
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


COMET OHSHITA (1992a1)
     Ephemeris continuation from IAUC 5679:

1993 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Jan.  3    15 14.40   +60 35.4   0.878   1.369   94.6   45.7   13.1
      5    15 30.89   +63 45.0   0.901   1.399   95.8   44.4   13.2
      7    15 49.87   +66 38.5   0.927   1.428   96.8   43.1   13.4
      9    16 11.79   +69 14.3   0.956   1.458   97.5   42.0   13.5
     11    16 37.1    +71 30.8   0.988   1.487   97.9   40.9   13.7
     13    17 06.1    +73 26.6   1.023   1.517   98.2   39.9   13.9
     15    17 38.8    +75 00.5   1.060   1.546   98.3   39.0   14.0
     17    18 14.9    +76 11.6   1.098   1.576   98.2   38.2   14.2
     19    18 53.2    +76 59.9   1.139   1.605   97.9   37.4   14.3
     21    19 32.0    +77 26.7   1.181   1.634   97.6   36.7   14.5
     23    20 09.6    +77 34.4   1.225   1.663   97.1   36.0   14.6
     25    20 44.5    +77 26.7   1.270   1.692   96.5   35.3   14.8
     27    21 15.9    +77 07.3   1.316   1.721   95.8   34.7   15.0
     29    21 43.6    +76 39.6   1.363   1.750   95.0   34.1   15.1
     31    22 07.7    +76 06.7   1.410   1.778   94.2   33.5   15.2
Feb.  2    22 28.6    +75 30.8   1.459   1.807   93.3   33.0   15.4

     Total V CCD magnitude obtained by H. Mikuz, Ljubljana,
Slovenia:  Dec. 7.19 UT, 11.9 (2'.8 coma).


EY CYGNI
     M. Orio, Torino Observatory; and H. Ogelman, University of
Wisconsin at Madison, communicate:  "We report the detection of the
dwarf nova EY Cyg in soft x-rays with the Rosat PSPC during a
serendipitous pointing on 1991 Apr. 5.  The x-ray source was about 0.6
deg off-axis and had a net vignetting corrected countrate of 0.08
+/- 0.01 cts/s, corresponding to an energy flux at the detector of
about 3 x 10E-13 erg cmE-2 sE-1 in the energy interval 0.4-2.2 keV.
This is likely to be the flux at quiescence, since no outburst was
reported at the epoch of the detection."


PERIODIC COMET GICLAS (1992l)
     Total visual magnitude estimates by A. Nakamura, Kuma, Japan
(0.60-m reflector):  Nov. 30.69 UT, 14.9; Dec. 2.68, 14.8.


1992 December 21               (5680)            Daniel W. E. Green

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