Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 6754: C/1997 T1; C/1997 T2; 1997 T3

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 6753 SEARCH Read IAUC 6755

View IAUC 6754 in .dvi or .ps format.
IAUC number 

                                                  Circular No. 6754
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 C/1997 T1 (UTSUNOMIYA)
     Total visual magnitude estimates: Oct. 6.75 UT, 10.5 (M. Plsek,
Lelekovice, Czech Republic, 0.35-m reflector; 10' tail in p.a.
110 deg); 6.76, 10.3 (V. Znojil, Brno, Czech Republic, 25 x 100
binoculars; 3' tail in p.a. 140 deg); 7.02, 10.0 (J. E. Bortle,
Stormville, NY, 0.41-m reflector); 7.83, 9.8 (M. Reszelski, Szamotuly,
Poland, 20 x 60 binoculars).


COMET C/1997 T2 (SOHO)
     C. St. Cyr, Naval Research Laboratory, on behalf of the SOHO-LASCO
Consortium (cf. IAUC 6685), reports that D. Lewis, University of
Birmingham, has discovered a comet in both C3 and C2 coronagraphic data.
The peak brightness was perhaps mag about 6, and there was evidence of
a small tail.  Measurements by Lewis, D. Biesecker and St. Cyr
have been reduced by G. V. Williams and are published in detail on MPEC
1997-T05, together with a Kreutz-type orbital solution by the undersigned.

                 1997 UT           R.A. (2000) Decl.
                 Oct.  3.287      12 12.8      - 5 20


COMET 1997 T3
     Uri Carsenty and Andreas Nathues, DLR Institute of Planetary
Exploration, Berlin, report their discovery of a cometary object in the
course of the Uppsala-DLR Trojan Survey program carried out at the
European Southern Observatory together with C.-I. Lagerkvist, S. Mottola
and G. Hahn.  The object was detected on an exposure with the 1-m Schmidt
as a point source, although seven unfiltered CCD images obtained on
three consecutive nights with the Bochum 0.6-m reflector clearly show a
tail extending 15" west-southwestward from the point source,
estimated at R about 18.9.  E. Braatz also assisted with the Oct. 7
observations.

     1997 UT             R.A. (2000) Decl.
     Oct.  5.07800    1 15 20.50   + 3 04 03.0
           5.08532    1 15 20.28   + 3 04 01.6
           6.21191    1 14 46.74   + 3 01 10.9
           6.21799    1 14 46.55   + 3 01 10.1
           7.15794    1 14 18.59   + 2 58 47.9
           7.16691    1 14 18.32   + 2 58 46.5
           7.17177    1 14 18.17   + 2 58 45.8

                      (C) Copyright 1997 CBAT
1997 October 7                 (6754)              Brian G. Marsden

Read IAUC 6753 SEARCH Read IAUC 6755

View IAUC 6754 in .dvi or .ps format.

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!