Sudbury , Mass. Dennis di Cicco(with permission)
Clayton , Ca.
On November 9th, asteroid 2005YU55 passed by the earth so close that viewers at separate locations saw the interloper appear against the background star field at slightly different spots. This parallax effect is apparent in these two images. The top image is by Dennis di Cicco from the Boston area. He used a 16" reflector. Bottom image I took from the San Francisco Bay area using an 80 mm refractor.