[IAUC] CBET 3849: 20140407 : COMET C/2014 G1 (PANSTARRS)
quai en eps.harvard.edu
quai en eps.harvard.edu
Lun Abr 7 10:47:48 ART 2014
Electronic Telegram No. 3849
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 G1 (PANSTARRS)
Richard J. Wainscoat and Bryce Bolin report the discovery of a comet in
four w-band exposures from the Pan-STARRS1 telescope at Haleakala (discovery
observations tabulated below), the object being clearly extended and
distinctly non-stellar with a low-surface-brightness tail towards p.a.
approximately 110 degrees. Follow-up 120-s r-band follow-up exposures taken
by Wainscoat (queue observer Adam Draginda) using the 3.6-m Canada-France-
Hawaii Telescope on Apr. 6.6 UT show a broad, low-surface-brightness tail
approximately 10" long extending towards p.a. approximately 115 degrees.
2014 UT R.A. (2000) Decl. Mag.
Apr. 5.57480 16 57 05.70 - 6 32 00.3 20.5
5.58707 16 57 05.06 - 6 31 57.0 20.3
5.59936 16 57 04.43 - 6 31 53.8 20.6
5.61170 16 57 03.79 - 6 31 50.5 20.5
After the object was posted on the Minor Planet Center's NEOCP and PCCP
webpages, other CCD astrometrists have also commented on the object's cometary
appearance. Four co-added 180-s Lum-filtered exposures taken by E. Bryssinck
(Kruibeke, Belgium; remotely with an iTelescope 0.61-m f/6.5 reflector
telescope located near Auberry, CA, USA; Apr. 7.48 UT) writes that four
co-added 180-s Luminance-filtered exposures show a diffuse object with coma of
diameter 13". H. Sato, Tokyo, Japan (remotely with an iTelescope 0.43-m f/6.8
astrograph near Mayhill, NM, U.S.A.; Apr. 7.5) finds a strongly condensed coma
of size 6" x 8", slightly elongated toward the east, on ten stacked 60-s
exposures; the luminance-filtered magnitude as measured within a circular
aperture of radius 5".7 was 18.6.
The available astrometry, the following preliminary parabolic orbital
elements by G. V. Williams, and an ephemeris appear on MPEC 2014-G42.
T = 2014 June 16.7328 TT Peri. = 103.2158
Node = 340.2335 2000.0
q = 5.508084 AU Incl. = 165.6109
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2014 CBAT
2014 April 7 (CBET 3849) Daniel W. E. Green
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