Asteroid 2004 BL86 passing Beehive Cluster

Photographer
Uwq_1rRhIcDO
Email
nikitin@rocketmail.com
Location of photo
Ward, CO, USA
Date/Time of photo
Jan 26, 2015, 11 pm.
Equipment
Canon T2i, Lentar 135 f/1.8 (@2.8), 13 series of (10 frames x 10 sec exposures (about 23 min total). Manual tracking using homemade barn-door mount. Stacked with DeepSkyStacker. Some poor quality frames were discarded.
Description
Asteroid 2004 BL86 passing Beehive Cluster. Each blue dash corresponds to the series of ten 10 sec exposures. Beehive Cluster is in the center of the image.