Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 8737: C/2006 P1; C/1998 J5; P/2006 HR_30

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 8736  SEARCH Read IAUC 8738

View IAUC 8737 in .dvi, .ps or .PDF format.
IAUC number

                                                  Circular No. 8737
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://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     R. H. McNaught reports his discovery of a comet (discovery
observation tabulated below) on CCD images obtained with the 0.5-m
Uppsala Schmidt telescope in the course of the Siding Spring Survey,
noting the object to have a faint 20"-diameter coma in moonlight.
Following posting on the 'NEO Confirmation Page', C. Jacques and E.
Pimentel report that CCD images obtained at Belo Horizonte, Brazil,
with a 0.30-m f/3 Schmidt-Cassegrain reflector on Aug. 8.0 UT show
a coma diameter of 16".

     2006 UT             R.A. (2000) Decl.       Mag.
     Aug.  7.50872   16 38 58.70   -18 05 46.3   17.3

The available astrometry, the following very preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2006-P31.

     T = 2007 June 17.713 TT          Peri. = 109.726
                                      Node  = 268.367   2000.0
     q = 1.55508 AU                   Incl. = 143.691

COMET C/1998 J5 (SOHO)
     Further to IAUC 8735, the following Kreutz-sungrazing archival
SOHO comet was diffuse, elongated, and very faint.

 Comet        1998 UT      R.A.(2000)Decl.   Inst.  F    MPEC
 C/1998 J5    May 12.227   3 17.5   +16 46   C2     HS   2006-L20

     Further to IAUC 8735, J. Licandro, Isaac Newton Group and
Instituto de Astrofisica de Canarias; and N. Pinilla and M. Pedani,
Centro Galileo Galilei, report that comet P/2006 HR_30 shows no
evidence of a coma on R-band images obtained on July 26.10 UT with
the 3.6-m Telescopio Nazionale Galileo at La Palma; six co-added
60-s images show the comet as point-like (FWHM 1"; ellipticity of
0.06, nearly equal to that of the surrounding stars).  D. T. Durig
(Sewanee, TN, 0.30-m reflector) writes that images obtained on Aug.
4.20-4.28 show a slight asymmetry or tail about 10" long in p.a.
5-10 deg, and P. C. Sherrod (Conway, AR, 0.41-m reflector) notes
that the comet showed some nebulosity toward the north on images
taken on Aug. 4.4.

                      (C) Copyright 2006 CBAT
2006 August 8                  (8737)            Daniel W. E. Green

Read IAUC 8736  SEARCH Read IAUC 8738

View IAUC 8737 in .dvi, .ps or .PDF format.

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

Valid HTML 4.01!