[IAUC] CBET 4025: 20141125 : COMET C/2014 TG_64 (CATALINA)
quai en eps.harvard.edu
quai en eps.harvard.edu
Lun Nov 24 21:04:29 ART 2014
Electronic Telegram No. 4025
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/2014 TG_64 (CATALINA)
An apparently asteroidal object discovered in the course of the Catalina
Sky Survey last month (observer J. A. Johnson; discovery observations
tabulated below, as first published on MPEC 2014-U18, when it was given the
minor-planet designation 2014 TG_64) has been found by L. Denneau and R.
Wainscoat to show a non-stellar appearance with a poorly resolved nuclear
condensation (of mag 21.3-21.5) on three w-band exposures taken with the
Pan-STARRS1 telescope on Nov. 22.4 UT. Follow-up r-band exposures taken by
Wainscoat, M. Micheli, and B. Bolin (queue observer was D. Woodworth) with
the Canada-France-Hawaii telescope on Nov. 23.2, tracked for the motion of
2014 TG_64 in variable weather conditions, show a slightly diffuse
appearance; the coma has a full-width at half-maximum of about 1".1,
compared to nearby stars with FWHM of about 0".75, with the magnitude given
as 20.9-21.5.
2014 UT R.A. (2000) Decl. Mag. Observer
Oct. 14.29802 1 27 18.07 - 9 37 19.2 19.1 Johnson
14.30592 1 27 17.66 - 9 37 19.3 19.2 "
14.31382 1 27 17.46 - 9 37 17.1 19.2 "
14.32173 1 27 17.11 - 9 37 16.9 19.3 "
Additional astrometry (including pre-discovery Pan-STARRS1 observations from
Oct. 3.5, with the magnitude given as 20.4-20.5), the following elliptical
orbital elements by G. V. Williams, and an ephemeris appear on MPEC 2014-W93.
Epoch = 2014 May 23.0 TT
T = 2014 May 25.9880 TT Peri. = 294.7675
e = 0.782699 Node = 50.2926 2000.0
q = 3.238940 AU Incl. = 22.2821
a = 14.905304 AU n = 0.0171275 P = 57.5 years
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2014 CBAT
2014 November 25 (CBET 4025) Daniel W. E. Green
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