[IAUC] CBET 3689: 20131106 : COMET C/2013 V1 (BOATTINI)
quai en eps.harvard.edu
quai en eps.harvard.edu
Mie Nov 6 10:10:36 ART 2013
Electronic Telegram No. 3689
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 V1 (BOATTINI)
A. Boattini reports his discovery of a comet on images taken with the
Catalina Sky Survey's 0.68-m Schmidt telescope (discovery observations
tabulated below), the object showing a 20" coma with a strong condensation
that is slightly elongated 25" in the east-west direction, with a very
distinctive tail more than 1' long in p.a. 230-235 deg (despite the presence
of a bright star along the comet's tail). Follow-up observations by R. A.
Kowalski with the Mount Lemmon 1.5-m reflector on Nov. 6.4 UT in poor seeing
show a bright, condensed coma of mag 15.4-15.5 with a broad tail > 1' long in
p.a. 220 deg. After the object was posted on the Minor Planet Center's PCCP
webpage, other CCD astrometrists have commented on the object's cometary
appearance. Four stacked 60-s exposures taken by V. Nevski with a 0.4-m
reflector at the ISON-Kislovodsk Observatory in Russia on Nov. 5.02 show a
10" coma and a 30" fan-shaped tail in p.a. 240 deg. P. Bacci writes that ten
co-added 60-s exposures taken with an iTelescope 0.43-m f/6.8 astrograph at
Siding Spring on Nov. 5.6 show the object to be diffuse and elongated 24" in
p.a. 205 deg. R. Ligustri (Talmassons, Udine, Italy) notes that eight 120-s
exposures taken on Nov. 5.7 with an iTelescope 0.50-m f/4.5 reflector at
Siding Spring show a curved tail 72" long in p.a. 230 deg. Three stacked
20-s R-band exposures taken remotely by E. Guido, N. Howes, and M. Nicolini
with an iTelescope 0.50-m f/6.8 astrograph at Siding Spring on Nov. 5.8 show a
diffuse coma about 18" in diameter. G. Masi reports that eight co-added 120-s
exposures taken by F. Nocentini and himself (and measured by U. Masi and
himself) with a 0.43-m f/6.8 reflector on Nov. 6.0 at Ceccano, Italy, show a
clear coma about 20" in size, elongated east-west.
2013 UT R.A. (2000) Decl. Mag. Observer
Nov. 4.38403 5 00 15.69 -15 09 58.0 15.6 Boattini
4.39009 5 00 15.24 -15 09 56.2 15.6 "
4.39614 5 00 14.84 -15 09 54.6 15.6 "
4.40219 5 00 14.40 -15 09 53.0 15.7 "
The available astrometry, the following preliminary parabolic orbital elements
by G. V. Williams, and an ephemeris appear on MPEC 2013-V32.
T = 2014 Apr. 8.4259 TT Peri. = 50.8370
Node = 73.4601 2000.0
q = 1.508094 AU Incl. = 62.3906
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2013 CBAT
2013 November 6 (CBET 3689) Daniel W. E. Green
Más información sobre la lista de distribución Iauc