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IAUC 7493: 2000dk; C/1999 T1; 2000cx

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                                                  Circular No. 7493
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)


SUPERNOVA 2000dk IN NGC 382
     S. Beckmann and W. D. Li, University of California at Berkeley,
on behalf of the Lick Observatory Supernova Search (cf. IAUC 6627,
7126), report the discovery with the 0.8-m Katzman Automatic
Imaging Telescope (KAIT) of an apparent supernova on unfiltered
images taken on Sept. 18.3 (mag about 16.0) and 19.2 UT (mag about
15.8).  The new object is located at R.A. = 1h07m23s.52, Decl. =
+32o24'23".2 (equinox 2000.0), which is 5".3 west and 8".7 north of
the nucleus of NGC 382.  A KAIT image of the same field taken on
Sept. 11.3 already showed a hint of SN 2000dk, while an image taken
on Sept. 6.3 showed nothing at this position (limiting mag about
19.0).  NGC 382 is interacting with the galaxy NGC 383.


COMET C/1999 T1 (MCNAUGHT-HARTLEY)
     Ephemeris from orbital elements on MPC 41158:

2000 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Sept.13     8 50.39   -42 49.9   2.132   1.816   58.2   28.1   10.2
     23     9 30.45   -43 03.2   2.084   1.710   54.6   28.6   10.0
Oct.  3    10 10.00   -42 45.5   2.043   1.608   50.7   28.8    9.7
     13    10 48.24   -41 55.5   2.007   1.511   46.8   28.8    9.4
     23    11 24.69   -40 33.1   1.968   1.421   43.4   28.8    9.2
Nov.  2    11 59.13   -38 38.4   1.924   1.340   40.8   28.9    8.9
     12    12 31.59   -36 10.3   1.871   1.273   39.4   29.6    8.7
     22    13 02.36   -33 05.9   1.806   1.220   39.6   31.1    8.5
Dec.  2    13 31.82   -29 21.0   1.729   1.186   41.4   33.4    8.3
     12    14 00.38   -24 48.5   1.642   1.172   44.9   36.3    8.1
     22    14 28.48   -19 20.2   1.549   1.179   49.6   39.4    8.0

     Visual m_1 estimates:  Aug. 10.81 UT, 11.0 (M. Mattiazzo,
Wallaroo, S. Australia, 0.20-m reflector); Sept. 4.82, 10.8 (A.
Pearce, Nedlands, W. Australia, 0.20-m reflector); 11.88, 10.2
(Pearce).


SUPERNOVA 2000cx IN NGC 524
   Unfiltered CCD magnitude estimates:  Aug. 2.09 UT, 13.5 (K.
Sarneczky and L. Kiss, Szeged, Hungary); 26.960, 15.0 (E.
Prosperi, Castelmartini, Italy); 29.951, 15.2 (Prosperi); Sept.
6.883, 15.6 (Prosperi); 9.997, 15.8 (Prosperi).

                      (C) Copyright 2000 CBAT
2000 September 19              (7493)            Daniel W. E. Green

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