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IAUC 8885: P/2007 U2

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                                                  Circular No. 8885
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://www.cfa.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


COMET P/2007 U2 (LINEAR-NEAT)
     K. Sarneczky and L. L. Kiss report their recovery of comet
P/2001 Q5 (cf. IAUC 7697) on R-band CCD images obtained with the
2.3-m reflector at Siding Spring (astrometry tabulated below).
Coma diameters and tail lengths:  Oct. 21.5 UT, 3", 6" in p.a. 95
deg (co-added 300-s image); 22.4, 3", 8" in p.a. 90 deg (co-added
180-s image).

     2007 UT             R.A. (2000) Decl.       Mag.
     Oct. 21.44897   18 34 35.78   -28 52 24.9   19.8
          21.45048   18 34 35.98   -28 52 23.9
          21.45199   18 34 36.14   -28 52 23.5
          21.45350   18 34 36.29   -28 52 22.9
          22.39249   18 36 15.32   -28 46 59.9
          22.40073   18 36 16.17   -28 46 57.2   19.7
          22.40629   18 36 16.77   -28 46 55.3
          22.41352   18 36 17.49   -28 46 52.5
          22.41704   18 36 17.89   -28 46 51.4

The indicated correction to the prediction on MPC 54167 is Delta(T)
= -0.5 day.  The following orbital elements by B. G. Marsden are
from 234 observations, 2001-2007 (mean residual 0".7); the
ephemeris uses H_10 = 14.0.

                    Epoch = 2001 June 20.0 TT
     T = 2001 June 11.6210 TT         Peri. =   6.3996
     e = 0.416559                     Node  = 336.2663  2000.0
     q = 2.043148 AU                  Incl. =  10.9448
       a =  3.501896 AU    n = 0.1504005    P =   6.553 years

                    Epoch = 2008 Feb. 24.0 TT
     T = 2008 Feb. 20.4955 TT         Peri. =   8.2860
     e = 0.395943                     Node  = 335.2570  2000.0
     q = 2.155746 AU                  Incl. =  10.7041
       a =  3.568779 AU    n = 0.1461923    P =   6.742 years

2007 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase   Mag.
Oct. 17    18 26.93   -29 17.3   2.433   2.342   72.9   24.0   19.6
     27    18 44.50   -28 19.9   2.518   2.316   66.8   23.2   19.7
Nov.  6    19 03.13   -27 16.2   2.600   2.291   61.1   22.3   19.7
     16    19 22.62   -26 04.8   2.677   2.268   55.5   21.1   19.7
     26    19 42.75   -24 44.7   2.748   2.246   50.1   19.7   19.7
Dec.  6    20 03.33   -23 15.4   2.815   2.227   44.8   18.2   19.7
     16    20 24.21   -21 36.3   2.876   2.210   39.7   16.5   19.7
     26    20 45.24   -19 47.5   2.931   2.195   34.8   14.8   19.7

                      (C) Copyright 2007 CBAT
2007 October 22                (8885)            Daniel W. E. Green

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