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IAUC 7510: C/2000 SV_74; 2000dv; C/1999 T1

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                                                  Circular No. 7510
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/2000 SV_74 (LINEAR)
     An apparently asteroidal object reported by LINEAR on two
nights in September (first observation given below), and published
on MPS 19881 under the designation 2000 SV_74, has been found to be
cometary (diffuse with 16" coma and 20" tail at p.a. 150 deg) by M.
Tichy on CCD images taken on Oct. 19.8 UT with the 0.57-m f/5.2
reflector at Klet.

     2000 UT             R.A. (2000) Decl.        m2
     Sept.24.34197    1 48 07.62   + 5 13 14.9   17.8

Full astrometry (including observations by LINEAR on Sept. 5) and
the following parabolic orbital elements are published on MPEC
2000-U07.

     T = 2002 May   1.3060 TT         Peri. =  76.2417
                                      Node  =  24.1918  2000.0
     q = 3.543939 AU                  Incl. =  75.1719

2000 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Oct. 13     1 34.75   + 5 28.1   5.027   6.021  174.3    0.9   16.3
     23     1 26.94   + 5 36.6   4.971   5.957  171.6    1.4   16.2
Nov.  2     1 19.16   + 5 46.9   4.949   5.894  160.4    3.2   16.2
     12     1 11.76   + 6 00.2   4.961   5.831  148.9    5.0   16.1
     22     1 05.08   + 6 17.5   5.002   5.768  137.4    6.7   16.1
Dec.  2     0 59.38   + 6 39.6   5.068   5.705  126.1    8.0   16.1
     12     0 54.86   + 7 07.0   5.154   5.642  115.1    9.1   16.1
     22     0 51.60   + 7 40.1   5.253   5.580  104.4    9.8   16.1


SUPERNOVA 2000dv IN UGC 4671
     G. M. Hurst, Basingstoke, England, reports the independent
discovery of SN 2000dv (cf. IAUC 7509) by M. Armstrong, Rolvenden,
on a CCD image taken on Oct. 17.136 UT (details as given for SN
2000dt on IAUC 7508).  The magnitude for SN 2000dv was then 17.5,
and the following position end figures were measured by Armstrong:
43s.32, 13".3.


COMET C/1999 T1 (McNAUGHT-HARTLEY)
     Visual m_1 estimates:  Sept. 23.85 UT, 9.9 (A. Pearce,
Nedlands, W. Australia, 0.20-m reflector); Oct. 2.71, 9.6 (D. A. J.
Seargent, The Entrance N.S.W., 25x100 binoculars); 18.83, 9.3
(Pearce).

                      (C) Copyright 2000 CBAT
2000 October 19                (7510)            Daniel W. E. Green

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