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IAUC 6297: 1996 B1; EUVE J2115-58.6

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                                                  Circular No. 6297
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
Phone 617-495-7244/7440/7444 (for emergency use only)


COMET 1996 B1
     The following precise CCD positions have been reported:

     1996 UT             R.A. (2000) Decl.        m2    Observer
     Jan. 29.30575   14 01 52.13   +53 32 39.1   14.3   Offutt
          29.34873   14 01 43.11   +53 32 11.0   14.2     "
          29.54324   14 01 02.86   +53 29 49.0          Kojima
          29.55270   14 01 00.95   +53 29 42.8            "
          29.68130   14 00 33.90   +53 28 16.6          Kobayashi
          29.68812   14 00 32.50   +53 28 12.5            "
          29.72067   14 00 25.62   +53 27 50.5          Asami
          29.74031   14 00 21.10   +53 27 37.1            "
          29.78403   14 00 11.82   +53 27 07.5          Kushida
          29.79757   14 00 08.81   +53 26 57.9            "
          29.87426   13 59 53.10   +53 25 52.1          Pravec
          29.88146   13 59 51.63   +53 25 47.0            "

W. Offutt (Cloudcroft).  0.6-m f/7 Ritchey-Chretien.
T. Kojima (Chiyoda).  0.25-m f/6.0 reflector.  Strong condensation.
J. Kobayashi (Kumamoto).  0.41-m f/5.0 reflector.  Visually m1 = 8.8.
A. Asami (Hadano).  0.20-m f/4.0 reflector.
Y. and R. Kushida (Yatsugatake).  0.25-m f/6.3 Schmidt-Cassegrain.
P. Pravec (Ondrejov).  0.65-m f/3.6 reflector.


EUVE J2115-58.6
     N. Craig, University of California at Berkeley, reports: "An
optical counterpart for EUVE J2115-58.6 has been identified as a
magnetic CV, probably an AM Her-type cataclysmic variable.  The field,
centered at R.A. = 21h15m41s, Decl. = -58d40'48" (equinox 2000.0), was
observed as part of the EUVE Optical ID Campaign on 1995 Dec. 10.063 UT
with the 1.5-m telescope (Loral) at Cerro Tololo.  The proposed optical
counterpart, at R.A. = 21h15m41s, Decl. = -58d40'54", well within the
source error circle, is a star of estimated mv = 16.0.  The optical
spectrum clearly shows the characteristics of a cataclysmic-variable
spectrum, with the typical Balmer emission lines, as well as
lines of He I, Ca II and strong He II emission.  The continuum increases
sharply toward the blue at short wavelengths.  The CV EUVE J2115-58.6
was detected during the all-sky survey in the EUVE Lexan/B band
(5.8-17.4 nm, 0.07-0.21 keV) on 1992 Oct. 20, and also during the
gap-filling on 1993 Apr. 19.  A countrate of 0.05 cts/s is calculated.
Monitoring photometric and spectroscopic observations are urged."

                      (C) Copyright 1996 CBAT
1996 January 29                (6297)              Brian G. Marsden

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