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IAUC 7860: 2002ap; C/2002 E2

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                                                  Circular No. 7860
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVA 2002ap IN M74
     G. H. Marion, P. Hoeflich, and J. C. Wheeler, University of
Texas at Austin; and W. Vacca, Max-Planck-Institut fuer
Extraterrestrische Physik, report on near-infrared spectroscopy of
SN 2002ap:  "The spectrum (range 0.80-2.5 microns, resolution 1200)
was obtained on Mar. 8.3 UT using the NASA Infrared Telescope
Facility (+ SpeX).  We see no evidence for Paschen lines or
Brackett gamma.  We confirm the presence of a P-Cyg feature with a
minimum at 1.03 microns (IAUC 7834, 7838), which could be
attributed to He I (1.083 microns) or Mg II (1.0914, 1.0915, and
1.0950 microns).  However, the He identification is not favored
because we find no detection of He I at 2.058 microns, while there
is a strong presence of other Mg features in the spectrum.  Mg II
is found at 2.13 and 1.58 microns, in blends with Si II.  Mg I is
prominent at 1.50 microns, and the wide absorption trough at 0.93-
1.03 microns is plausibly a combination of Mg I, C I, and Mg II.
Ca II is identified in P-Cyg features with absorption minima at
0.81 micron and (possibly blended with Mg I) at 1.16 microns.   We
also detect emission or P-Cyg features that are identified with C I
at 0.91 micron, Si II at 1.29 microns, O I at 1.11 microns, and O I
blended with Si II at 1.22 microns."


COMET C/2002 E2 (SNYDER-MURAKAMI)
     Ephemeris extension to IAUC 7852 (elements MPC 2002-F56):

2002 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Mar. 27    19 10.88   +15 57.3   1.404   1.540   77.7   39.3   10.1
Apr.  1    19 15.14   +21 59.8   1.380   1.563   80.4   39.1   10.1
      6    19 18.89   +28 11.5   1.368   1.588   82.6   38.7   10.2
     11    19 22.02   +34 25.1   1.369   1.616   84.4   38.1   10.3
     16    19 24.41   +40 32.9   1.383   1.646   85.7   37.4   10.4
     21    19 25.85   +46 27.5   1.410   1.678   86.4   36.7   10.5
     26    19 26.12   +52 02.7   1.449   1.713   86.5   35.9   10.6
May   1    19 24.88   +57 14.3   1.498   1.749   86.2   35.1   10.8
      6    19 21.67   +61 59.4   1.555   1.787   85.5   34.3   11.0
     11    19 15.81   +66 16.6   1.621   1.826   84.5   33.4   11.2
     16    19 06.4    +70 05.0   1.692   1.867   83.3   32.5   11.4

     Visual m_1 estimates:  Mar. 15.10 UT, 10.3 (B. H. Granslo,
Eina, Norway, 0.25-m reflector); 17.09, 10.1 (A. Baransky, Kiev,
Ukraine, 0.36-m reflector); 21.86, 10.9 (A. Pearce, Nedlands, W.
Australia, 0.41-m reflector); 23.11, 9.9 (K. Hornoch, Lelekovice,
Czech Republic, 0.13-m reflector).

                      (C) Copyright 2002 CBAT
2002 March 25                  (7860)            Daniel W. E. Green

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