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IAUC 8827: P/2007 E3

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                                                  Circular No. 8827
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 P/2007 E3 (LINEAR)
     E. J. Christensen reports his recovery of comet P/1999 J5 (cf.
IAUC 7201) on images obtained in the course of the Mount Lemmon
Survey on Mar. 9 by himself and on Mar. 10 by R. A. Kowalski.  The
images were not obviously cometary, although they may have been
slightly elongated toward p.a. 235 deg on the first night.  On the
second night, 30-second integrations in good seeing revealed
neither coma nor tail.  G. V. Williams, Minor Planet Center,
identified further observations in Mt. Lemmon incidental asteroidal
astrometry by Kowalski on Apr. 7.

     2007 UT             R.A. (2000) Decl.       Mag.
     Mar.  9.37740   11 18 40.14   +19 55 38.2   21.2
           9.38374   11 18 39.96   +19 55 40.8   21.1
           9.39006   11 18 39.74   +19 55 42.6   21.1
           9.39652   11 18 39.49   +19 55 44.2   21.0
          10.31285   11 18 07.57   +20 00 05.7
          10.33449   11 18 06.78   +20 00 11.9
          10.34527   11 18 06.39   +20 00 15.3
     Apr.  7.26289   11 03 34.84   +21 26 40.2   22.0
           7.26917   11 03 34.66   +21 26 39.1   21.2
           7.27556   11 03 34.48   +21 26 40.5   20.9
           7.28187   11 03 34.34   +21 26 40.4   20.8

     The indicated correction to the prediction on MPC 54170 is
Delta(T) = -0.8 day.  The following improved orbital elements have
been computed by Williams from 72 observations, 1999-2007:

                    Epoch = 1999 May  22.0 TT
     T = 1999 May  12.1310 TT         Peri. = 132.1799
     e = 0.169470                     Node  = 112.0187  2000.0
     q = 3.712711 AU                  Incl. =  13.7164
       a =  4.470289 AU    n = 0.1042799    P =   9.45 years

                    Epoch = 2008 Oct. 21.0 TT
     T = 2008 Oct.  6.3021 TT         Peri. = 131.9564
     e = 0.170548                     Node  = 112.0027  2000.0
     q = 3.693255 AU                  Incl. =  13.7323
       a =  4.452644 AU    n = 0.1049004    P =   9.40 years

                      (C) Copyright 2007 CBAT
2007 April 7                   (8827)            Daniel W. E. Green

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