Central Bureau for Astronomical Telegrams

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IAUC 7821: C/2002 B2; 2002at; 2002ap

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IAUC number 

                                                  Circular No. 7821
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)


COMET C/2002 B2 (LINEAR)
     An apparently asteroidal object reported by LINEAR (discovery
observation below) and posted on the NEO Confirmation Page has been
found to be cometary by M. Tichy and J. Ticha at Klet (coma
diameter 6", with m1 = 17.2, and faint 9" tail in p.a. 90 deg on
Feb. 3.05 UT) and by R. H. McNaught at Siding Spring (8" coma and
10" tail in p.a. 60 deg on Feb. 6.66).

     2002 UT             R.A. (2000) Decl.        m2
     Jan. 23.39930   11 40 59.52   -28 25 48.6   18.7

     The available astrometry (Jan. 23-Feb. 6), the orbital
elements below, and an ephemeris appear on MPEC 2002-C27.

     T = 2002 Apr.  6.689 TT          Peri. = 257.042
                                      Node  =  54.313   2000.0
     q = 3.84315 AU                   Incl. = 152.870


SUPERNOVA 2002at IN NGC 3720
     B. Swift and W. D. Li, University of California at Berkeley,
report the LOTOSS (cf. IAUC 7514) discovery of an apparent
supernova (mag about 17.8) on unfiltered CCD images taken with the
0.8-m Katzman Automatic Imaging Telescope (KAIT) on Feb. 5.4 and
6.4 UT.  SN 2002at is located at R.A. = 11h32m21s.95, Decl. =
+0 48'08".8 (equinox 2000.0), which is 4".8 east and 6".0 south of
the nucleus of NGC 3720.  A KAIT image taken on 2001 May 6.2 showed
nothing at this position (limiting mag about 19.0).


SUPERNOVA 2002ap IN M74
     P. Rodriguez Pascual, R. Gonzalez Riestra, B. Gonzalez Garcia,
M. Santos Lleo, M. Guainazzi, and N. Schartel, XMM-Newton Science
Operations Centre, European Space Agency, write that XMM-Newton
observed the location of SN 2002ap from Feb. 3.00 to 3.40 UT.  SN
2002ap appears in the OM UVW1 images (wavelength range 245-320 nm)
with a brightness of 14.4 counts/s, which corresponds to a flux of
7 x 10**-15 erg cm**-2 s**-1 A**-1.  Preliminary analysis of the
EPIC-pn image shows a 3.5-sigma excess of photons that is located
at a distance of 4" with respect to the position given on IAUC
7810.  This excess corresponds to a countrate of 9.0 (+/- 2.5) x
10**-4 count/s.  At this stage of data reduction, the ultraviolet
position error is expected to be < 10".

                      (C) Copyright 2002 CBAT
2002 February 6                (7821)            Daniel W. E. Green

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