IAU Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 8900: P/2007 W2

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).


Read IAUC 8899  SEARCH Read IAUC 8901

View IAUC 8900 in .dvi, .ps or .PDF format.
IAUC number


                                                  Circular No. 8900
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 W2 (LINEAR)
     L. Buzzi and F. Luppi report their recovery of P/2000 B3 (cf.
IAUC 7356) on CCD frames taken with a 0.60-m f/4.64 reflector at
Varese, Italy (astrometry tabulated below); stacked images
totalling 25 min of exposure show a 8" condensed coma with a tail
approximately 10" long in p.a. 240 deg.

     2007 UT             R.A. (2000) Decl.       Mag.
     Nov. 17.06763    5 52 34.70   +43 16 00.7
          17.12336    5 52 35.06   +43 16 32.4   19.5
          26.98525    5 52 05.65   +44 43 56.4
          27.03909    5 52 04.65   +44 44 23.3   18.6

The indicated correction to the prediction on MPC 54167 is Delta(T)
= +0.16 day.  The following orbital elements are by B. G. Marsden
from 91 observations, 2000-2007 (mean residual 0".5):

                    Epoch = 2000 Feb. 26.0 TT
     T = 2000 Feb. 14.1600 TT         Peri. = 130.5069
     e = 0.575215                     Node  = 352.1471  2000.0
     q = 1.700254 AU                  Incl. =  11.1263
       a =  4.002627 AU    n = 0.1230797    P =   8.008 years

                    Epoch = 2008 Feb. 24.0 TT
     T = 2008 Feb. 26.1914 TT         Peri. = 130.6410
     e = 0.574210                     Node  = 352.0642  2000.0
     q = 1.708753 AU                  Incl. =  11.1181
       a =  4.013132 AU    n = 0.1225967    P =   8.039 years

     This ephemeris uses H_10 = 15.5:

2007/8      R. A. (2000) Decl.   Delta     r    Elong. Phase   Mag.
Nov. 26     5 52.31   +44 35.8   1.026   1.932  147.5   15.9   18.4
Dec.  6     5 48.39   +45 49.0   0.956   1.890  153.5   13.4   18.2
     16     5 41.43   +46 33.7   0.906   1.851  156.6   12.2   18.0
     26     5 33.38   +46 40.5   0.876   1.816  155.2   13.1   17.8
Jan.  5     5 26.66   +46 06.7   0.865   1.785  149.9   16.0   17.7
     15     5 23.57   +44 57.4   0.873   1.759  142.8   19.8   17.7
     25     5 25.50   +43 23.2   0.896   1.739  135.2   23.5   17.7
Feb.  4     5 32.66   +41 34.1   0.933   1.723  127.8   26.9   17.7
     14     5 44.62   +39 37.2   0.982   1.713  120.9   29.6   17.8

                      (C) Copyright 2007 CBAT
2007 November 27               (8900)            Daniel W. E. Green

Read IAUC 8899  SEARCH Read IAUC 8901

View IAUC 8900 in .dvi, .ps or .PDF format.


Our Web policy. Index to the CBAT/MPC/ICQ pages.


Valid HTML 4.01!