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IAUC 6940: 1998 M1; C/1998 K5

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                                                 Circular No. 6940
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)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html
Phone 617-495-7244/7440/7444 (for emergency use only)


COMET 1998 M1
     The Lincoln Laboratory Near-Earth Asteroid Research project
has found another comet.  The following CCD observations have been
reported:

     1998 UT             R.A. (2000) Decl.        m2    Observer
     June 16.24366   15 27 08.87   -25 01 51.9   17.5   Blythe
          16.26111   15 27 08.41   -25 01 35.0   18.1     "
          16.27875   15 27 08.21   -25 01 27.5   18.2     "
          16.29655   15 27 08.13   -25 01 20.2   18.0     "
          16.31370   15 27 07.52   -25 01 12.1   18.0     "
          16.88270   15 27 00.34   -24 56 42.5   17.2   Tichy
          16.88375   15 27 00.35   -24 56 42.3            "
          16.88480   15 27 00.35   -24 56 41.7            "
          16.88626   15 27 00.30   -24 56 41.7            "

M. Blythe, F. Shelly, and M. Bezpalko (Lincoln Laboratory ETS).
  1-m f/2.15 reflector.  Measurers J. Stuart and H. Viggh.  Tail
  20" long in p.a. about 220 deg.
M. Tichy and Z. Moravec (Klet).  0.57-m f/5.2 reflector.  Measurer
  Tichy.  Tail 20" long in p.a. 150 deg; m_1 = 15.6.


COMET C/1998 K5 (LINEAR)
     Ephemeris extension to IAUC 6923 (orbital elements MPC 31894):

1998 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
June 16    19 31.33   +37 28.6   0.191   1.106  113.5   57.4   13.8
     18    19 56.59   +41 37.3   0.188   1.090  108.2   62.3   13.7
     20    20 25.39   +45 22.8   0.188   1.074  103.0   67.2   13.7
     22    20 57.48   +48 33.7   0.190   1.060   98.0   71.8   13.6
     24    21 32.08   +51 01.3   0.194   1.046   93.3   76.0   13.6
     26    22 07.87   +52 41.6   0.200   1.033   89.1   79.7   13.6
     28    22 43.27   +53 35.9   0.207   1.021   85.4   82.9   13.7
     30    23 16.81   +53 49.9   0.216   1.010   82.2   85.6   13.7
July  2    23 47.47   +53 31.9   0.226   1.000   79.5   87.7   13.8
      4     0 14.78   +52 50.7   0.238   0.992   77.2   89.3   13.8
      6     0 38.73   +51 54.1   0.250   0.984   75.4   90.3   13.9

     Total visual magnitude estimates:  May 31.95 UT, 14.6 (M.
Lehky, Hradec Kralove, Czech Republic, 0.42-m reflector); June
1.00, 14.9 (K. Hornoch, Lelekovice, Czech Republic, 0.35-m
reflector); 2.93, 14.3 (Lehky).

                      (C) Copyright 1998 CBAT
1998 June 16                   (6940)            Daniel W. E. Green

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