[IAUC] CBET 3510: 20130510 : COMET P/2013 J2 (McNAUGHT)
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Vie Mayo 10 13:31:03 ART 2013
Electronic Telegram No. 3510
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 P/2013 J2 (McNAUGHT)
R. H. McNaught reports his discovery of a comet on CCD images taken with
the 0.5-m Uppsala Schmidt telescope at Siding Spring (discovery observations
tabulated below). On May 8, there was a very weak 15" tail in p.a. 250 deg,
while on May 9 there was an obvious 20" tail in p.a. 240 deg; the comet's
FWHM in the images on both nights was slightly large than those of surrounding
field stars.
2013 UT R.A. (2000) Decl. Mag. Observer
May 8.75012 21 00 15.27 -17 43 35.9 18.2 McNaught
8.75970 21 00 15.99 -17 43 29.4 18.2 "
8.76867 21 00 16.65 -17 43 23.4 18.1 "
8.77767 21 00 17.26 -17 43 17.5 17.6 "
9.74673 21 01 29.70 -17 32 10.8 "
9.75629 21 01 30.39 -17 32 04.3 17.7 "
9.76596 21 01 31.09 -17 31 57.8 17.8 "
9.77564 21 01 31.79 -17 31 51.1 17.6 "
The available astrometry, the following very preliminary elliptical orbital
elements by G. V. Williams, and an ephemeris appear on MPEC 2013-J38.
T = 2013 Aug. 26.9872 TT Peri. = 39.4115
e = 0.503148 Node = 288.3733 2000.0
q = 2.086849 AU Incl. = 15.1360
a = 4.200145 AU n = 0.1145006 P = 8.61 years
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2013 CBAT
2013 May 10 (CBET 3510) Daniel W. E. Green
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