Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 8878: P/2007 T2; V458 Vul

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 8877  SEARCH Read IAUC 8879

View IAUC 8878 in .dvi, .ps or .PDF format.
IAUC number

                                                  Circular No. 8878
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://www.cfa.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     R. A. Kowalski reports his discovery of a comet on Catalina
Sky Survey images taken with the 0.68-m Schmidt telescope
(discovery observation tabulated below), the twilight images
showing a coma 15" across.  Follow-up 30-s exposures by E. Beshore
with the Mt. Lemmon 1.5-m reflector on Oct. 10.5 UT show a bright,
elongated nuclear condensation and a tail approximately 20" long in
p.a. approximately 300 deg.  After posting on the Minor Planet
Center's 'NEOCP' webpage, G. Sostero and E. Guido (Remanzacco,
Italy, 0.45-m f/4.4 reflector) write that 70 co-added 30-s images
from Oct. 10.13-10.16 show a concentrated coma with a diameter of
nearly 18" of total mag about 16.3, elongated toward the northwest,
with a narrow tail extending nearly 15" toward p.a. 300 deg.  L.
Buzzi (Varese, Italy, 0.60-m f/4.6 reflector) reports that, on his
images from Oct. 11.2, the object is elongated 10" in p.a. 310 deg.
D. T. Durig (Sewanee, TN, U.S.A., 0.30-m f/3 Schmidt-Cassegrain
reflector) notes that twenty stacked 2-min images taken on Oct. 11.4
show a 15"-17" coma that is asymmetrical in p.a. 310 deg.  J. E.
McGaha (Tucson, AZ, U.S.A., 0.62-m f/5.1 reflector) adds that his
120-s images from Oct. 11.48 show a 6" coma that is elongated
toward a short 8" tail in p.a. 305 deg.

     2007 UT             R.A. (2000) Decl.       Mag.
     Oct.  9.50984   10 05 54.70   +22 37 06.5   16.9

The available astrometry, the following preliminary elliptical
orbital elements, and an ephemeris appear on MPEC 2007-T76.

     T = 2007 Sept.18.999 TT          Peri. = 358.436
     e = 0.78882                      Node  =   4.161   2000.0
     q = 0.69221 AU                   Incl. =   9.979
       a =  3.27775 AU     n = 0.166089     P =   5.9 years

     Visual magnitude estimates (cf. IAUC 8863), some forwarded by
E. Broens, Mol, Belgium, on behalf of the Werkgroep Veranderlijke
Sterren, Vereniging Voor Sterrenkunde:  Aug. 26.821 UT, 10.7 (K.
Hornoch, Vohancice, Czech Republic); 29.843, 11.0 (P. Cloesen,
Beringen, Belgium); Sept. 4.874, 11.2 (F. Van Loo, Genk, Belgium);
12.912, 11.3 (A. Diepvens, Balen, Belgium); 16.835, 11.6 (H.
Hautecler, Boutersem, Belgium); 20.784, 12.0 (M. Lehky, Hradec
Kralove, Czech Republic); 24.847, 11.8 (E. Muyllaert, Oostende,

                      (C) Copyright 2007 CBAT
2007 October 11                (8878)            Daniel W. E. Green

Read IAUC 8877  SEARCH Read IAUC 8879

View IAUC 8878 in .dvi, .ps or .PDF format.

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

Valid HTML 4.01!