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IAUC 6948: SGR 1627-41; C/1998 K2

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                                                 Circular No. 6948
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)


SGR 1627-41
     P. Woods, M. Kippen, and Jan van Paradijs, University of
Alabama in Huntsville; C. Kouveliotou and M. McCollough,
Universities Space Research Association; and K. Hurley, Space
Sciences Laboratory, communicate:  "BATSE Earth-limb considerations
limit the possible position of this object to declinations along
the IPN annulus reported by Hurley et al. (below), which are
between -43 deg and -49 deg.  This is slightly outside the BATSE
1-sigma error circle reported on IAUC 6944.  However, due to the
soft spectrum of the source, systematic errors were larger than
usual.  A preliminary search through the MOST supernova remnant
(SNR) catalogue (Whiteoak and Green 1996, A.Ap. Suppl. 118, 329)
reveals only one candidate within the error box reported here,
G337.0-0.1.  The peculiar nonthermal-structure core reported for
G337.0-0.1 is entirely within the IPN annulus width.  We strongly
encourage follow-up observations of the SNR source."
     Hurley, on behalf of the Ulysses Gamma-Ray Burst Team; and
Kouveliotou, Kippen, and Woods, on behalf of the Gamma-Ray
Observatory BATSE team, report:  "We have obtained an IPN annulus
for this soft gamma-ray repeater (IAUC 6944).  Its center is at
R.A. = 22h01m40s, Decl. = -10o09'.8 (equinox 2000.0), and its
radius is 76.769 +/- 0.028 deg.  Considerable further refinement of
this position is possible.  An image may be found at
http://ssl.berkeley.edu/ipn3/sgr1627-41/."


COMET C/1998 K2 (LINEAR)
     Ephemeris extension to IAUC 6915 (elements MPC 31893):

1998 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
June 26    15 39.63   -42 51.5   1.561   2.443  141.9   14.9   13.3
July  6    15 17.49   -45 36.6   1.630   2.411  129.8   18.9   13.4
     16    14 59.58   -47 48.4   1.721   2.383  118.8   21.9   13.5
     26    14 46.79   -49 39.1   1.827   2.361  108.9   24.0   13.5
Aug.  5    14 39.28   -51 20.2   1.941   2.343  100.2   25.2   13.6
     15    14 36.74   -53 00.1   2.057   2.331   92.4   25.7   13.7
     25    14 38.81   -54 43.7   2.171   2.324   85.7   25.7   13.8
Sept. 4    14 45.19   -56 34.1   2.281   2.323   79.7   25.3   14.0
     14    14 55.76   -58 31.6   2.384   2.327   74.6   24.6   14.1
     24    15 10.67   -60 35.7   2.479   2.337   70.1   23.8   14.2
Oct.  4    15 30.32   -62 44.4   2.566   2.352   66.4   22.9   14.3

     Visual m_1 estimates:  May 31.27 UT, 13.1 (C. S. Morris,
Lockwood Valley, CA, 0.5-m reflector); June 2.64, 12.6 (M.
Mattiazzo, Wallaroo, South Australia, 0.20-m reflector); 17.54,
12.7 (Mattiazzo).

                      (C) Copyright 1998 CBAT
1998 June 19                   (6948)            Daniel W. E. Green

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