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IAUC 7916: 2002dh; 2002df; C/1998 V8, V9, W7, X12; C/2002 L1, L2 (SOHO)

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                                                  Circular No. 7916
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     Further to IAUC 7905, W. M. Wood-Vasey, G. Aldering, and P.
Nugent report the discovery of an apparent supernova on unfiltered
NEAT images taken at Palomar on May  28.3 (mag 18.3) and June 4.3
UT (mag 16.4).  SN 2002dh is located at R.A. = 15h24m49s.35, Decl.
= -22o45'57".7 (equinox 2000.0), which is 7" north and 3" east of
the apparent host galaxy.  No object is apparent at this location
on images from May 9 (limiting mag 20.8).

SUPERNOVA 2002df IN MCG -01-53-6
     T. Matheson, S. Jha, P. Challis, and R. Kirshner, Harvard-
Smithsonian Center for Astrophysics, report that a spectrum (range
370-750 nm) of SN 2002df (cf. IAUC 7915), obtained by P. Berlind on
June 4.45 UT with the Mt. Hopkins 1.5-m telescope (+ FAST
spectrograph), shows it to be a type-Ia supernova about a week
after maximum.  Narrow H-alpha emission from a nearby H II region
indicates a recession velocity of 8600 km/s for the host galaxy.
Using this value, the expansion velocity of the supernova is about
10500 km/s for Si II (rest 635.5 nm).  The spectral-feature age of
the supernova is 6 +/- 2 days after maximum light.

COMETS C/1998 V8, V9, W7, X12; C/2002 L1, L2 (SOHO)
     Further to IAUC 7913, D. Hammer reports his measurements of
additional comets found by R. Kracht (C/1998 V8, C/1998 W7, C/2002
L1), X. Leprette (C/1998 V9), and M. Meyer (C/1998 X12, C/2002 L2)
on SOHO website C2 images; C/1998 W7 was also visible with the C3
coronagraph.  Reduced astrometry and orbital elements by B. G.
Marsden appear on the MPECs cited below.  C/1998 V8 and C/1998 W7
belong to the Meyer group (cf. IAUC 7832), while the rest are
Kreutz sungrazers.

  Comet         1998 UT          R.A. (2000) Decl.       MPEC
  C/1998 V8     Nov.  3.096      14 25.9   -14 15       2002-J39
  C/1998 V9           8.309      14 51.2   -18 03       2002-K48
  C/1998 W7          28.064      16 13.5   -20 16       2002-J39
  C/1998 X12    Dec.  7.038      16 56.4   -24 21       2002-J39

  Comet         2002 UT          R.A. (2000) Decl.       MPEC
  C/2002 L1     June  5.536       4 53.0   +20 52       2002-L22
  C/2002 L2           6.188       4 55.3   +20 52       2002-L28

                      (C) Copyright 2002 CBAT
2002 June 7                    (7916)            Daniel W. E. Green

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