[IAUC] CBET 3450: 20130401 : COMET C/2013 F3 (McNAUGHT)
quai en eps.harvard.edu
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Lun Abr 1 08:49:49 ART 2013
Electronic Telegram No. 3450
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University;
20 Oxford St.; Cambridge, MA 02138; U.S.A.
e-mail: cbatiau en eps.harvard.edu (alternate cbat en iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network
COMET C/2013 F3 (McNAUGHT)
R. H. McNaught reports his discovery of a comet on CCD images obtained
with the 0.5-m Uppsala Schmidt telescope at Siding Spring (discovery
observations tabulated below), the object showing a circular coma of diameter
0'.3 with moderate condensation; an image taken two nights later in poor seeing
showed a similar appearance with total magnitude 16.8. After posting on the
Minor Planet Center's NEOCP webpage, H. Sato (Tokyo, Japan) obtained images
remotely with a 0.51-m f/6.8 astrograph located at the iTelescope Observatory
at Siding Spring on Mar. 31.77 UT that show a faint coma 15" in diameter with
a 40" tail toward p.a. 250 degree in six stacked 60-s exposure; the total
V-band magnitude, as measured within a circular aperture of radius 8".2, was
17.3.
2013 UT R.A. (2000) Decl. Mag. Observer
Mar. 29.75780 19 31 29.50 -25 45 08.0 17.5 McNaught
29.76998 19 31 29.81 -25 44 52.1 16.8 "
29.79443 19 31 30.26 -25 44 18.9 16.9 "
The available astrometry, the following preliminary parabolic orbital
elements by G. V. Williams, and an ephemeris appear on MPEC 2013-G02.
T = 2013 May 21.4710 TT Peri. = 17.0976
Node = 266.1855 2000.0
q = 2.269212 AU Incl. = 85.0253
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2013 CBAT
2013 April 1 (CBET 3450) Daniel W. E. Green
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