The magnitude +7.0 comet C/2013 US 10 Catalina will appear to pass the magnitude -0.0 star Arcturus by 0.4° during the morning of 2016 JAN 01 at 11:30 UT (05:30 CST). For almost all of North America this will occur before sunrise with the comet and star above the horizon. A telescope or binoculars will be necessary. The comet will then be virtually at its peak brilliance which is expected on January 7. It will be closest to Earth on January 17 at 0.7244 AU. I’ve created several preview graphics and an ephemeris. They can be viewed at www.CurtRenz.com/comets.html Photos and descriptions of the comet would be welcome additions to this thread.