NEOCP Object SYB6475 = COMET C/2011 Y3 (BOATTINI)

NEOCP object SYB6475 found by Andrea Boattini in the course of the Mount Lemmon Survey was observed on the night of 2011-Dec-26 from La Cañada. This is a cropped and zoomed (2X) detail of a stack consisting on the co-addition of 28 images tracking the object's movement which were taken centered on 2011-12-26 22:50 UT, the total exposure time is 56 min (2 min each)

C/2011 Y3 BOATTINI, 2011-Dec-26.95 UT La Cañada 

The object shows a round coma about 10 arc seconds in diameter with a tail extending about 35 arc seconds in position angle 235 deg (south west), the false colour rendition below tries to bring out the faint features.

C/2011 Y3 BOATTINI, 2011-Dec-26.95 UT La Cañada
False colour rendition

Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION

COMET C/2011 Y3 (BOATTINI)
    A. Boattini reports his discovery of another comet on CCD images taken
with the Mount Lemmon 1.5-m reflector ....,
...  J. Lacruz (Madrid, Spain) writes that images
taken with a 0.40-m Ritchey-Chretien reflector at La Canada on Dec. 26.94-26.96
show a diffuse nuclear region with a round 10" coma and a short fan-like tail
extending about 35" toward p.a. 235.  ...

The published orbit asumes e=1, a parabolic comet with perihelion (q=5.5 AU) beyond the orbit of Jupiter.

References :  MPEC2011-Y50, CBET 2959, IAUC 9249