This coming July features a spectacular flyby of the near-Earth Apollo asteroid 2004 XP14. Like the flyby of 2002 NY40 in 2002, 2004 XP14 will amaze visual observers with incredible speed visible in medium size telescopes.
Near close approach around 4:44m UT July 3, this 600-meter/yard diameter asteroid Passes only 268,873 miles from the Earth, only 1.1 times the distance to the moon away. Peaking at visual magnitude 11.1 four hours later, users of telescopes of 6 inches (15cm) or larger can enjoy observing a rare celestial treat. At time of close approach, 2004 XP14 races along at 8.323 degrees per hour, or a mean lunar diameter every four minutes! Such a rapid speed results in direct motion becoming visible, second by second. Just as naked eye Earth satellites are seen crossing the sky, 2004 XP14 will both amaze and challenge the observer, both visually and those taking images.