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IAUC 7570: C/2001 B1

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                                                  Circular No. 7570
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/2001 B1 (LINEAR)
     M. Blythe, Lincoln Laboratory, reports the discovery by LINEAR
of an apparent comet.  Additional observations have been received
following posting on the NEO Confirmation Page.  Available CCD
astrometry:

     2001 UT             R.A. (2000) Decl.        m1    Observer
     Jan. 22.08228    3 23 46.32   -28 07 22.5   17.7   LINEAR
          22.09833    3 23 45.34   -28 06 55.7   17.8     "
          22.11385    3 23 44.60   -28 06 32.0   17.6     "
          22.12940    3 23 43.74   -28 06 06.4   17.4     "
          22.14645    3 23 42.75   -28 05 39.4   17.3     "
          23.75600    3 22 18.65   -27 22 11.1   16.4   Tichy
          23.75828    3 22 18.57   -27 22 05.8            "
          23.75984    3 22 18.43   -27 22 03.8            "
          23.76100    3 22 18.32   -27 22 02.9   16.4     "
          24.42896    3 21 45.31   -27 04 02.9          Garradd
          24.43194    3 21 45.03   -27 03 58.2            "
          24.43360    3 21 45.08   -27 03 56.3            "
          24.43571    3 21 44.98   -27 03 52.2            "

LINEAR (Lincoln Laboratory ETS).  Observers M. Blythe, F. Shelly,
  M. Bezpalko, M. Elowitz, R. Huber, and L. Manguso.  Measurers J.
  Stuart, R. Sayer, J. B. Evans, and H. Viggh.  1.0-m f/2.15
  reflector.
M. Tichy and M. Kocer (Klet).  0.57-m f/5.2 reflector.  Object
  diffuse.
G. J. Garradd (Loomberah).  0.45-m f/5.4 reflector.  Faint coma of
  diameter about 10" on 30-s exposures; m_2 = 18.1.

     Preliminary parabolic orbital elements from the above
observations:

     T = 2000 Sept. 2.743 TT          Peri. = 279.003
                                      Node  =  49.247   2000.0
     q = 2.81871 AU                   Incl. = 104.926

2001 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Jan. 21     3 24.78   -28 36.8   2.911   3.157   95.2   18.1   16.3
     31     3 17.23   -24 11.7   3.084   3.203   87.9   17.9   16.5
Feb. 10     3 13.04   -20 05.3   3.272   3.251   80.1   17.4   16.7
     20     3 11.45   -16 20.1   3.468   3.302   72.2   16.6   16.9
Mar.  2     3 11.88   -12 56.1   3.665   3.354   64.2   15.4   17.1
     12     3 13.83   - 9 51.9   3.858   3.408   56.2   14.0   17.3
     22     3 16.95   - 7 05.9   4.043   3.463   48.4   12.4   17.4

                      (C) Copyright 2001 CBAT
2001 January 24                (7570)            Daniel W. E. Green

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