Orbital elements: 2010 AL30 Earth MOID = 0.0000 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 281.43686 (2000.0) P Q n 0.98334652 Peri. 104.60248 -0.78961550 +0.61036841 a 1.0015324 Node 113.05294 -0.58600435 -0.71972518 e 0.3058439 Incl. 3.92041 -0.18195126 -0.33082634 P 1.00 H 27.1 G 0.15 U 5
Orbital elements: 2010 AL30 Earth MOID = 0.0000 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 281.43595 (2000.0) P Q n 0.98335109 Peri. 104.60258 -0.78961441 +0.61036995 a 1.0015293 Node 113.05296 -0.58600526 -0.71972418 e 0.3058375 Incl. 3.92033 -0.18195309 -0.33082567 P 1.00 H 27.2 G 0.15 U 5
Astronomers say it may be space junk or it could be a tiny asteroid, too small to cause damage even if it hit. It's 33 to 50 feet wide at most. Read more
NASA says that on Wednesday at 7:47 a.m. EST, it will streak by, missing Earth by about 80,000 miles. In the western United States it may be bright enough to be seen with a good amateur telescope. Read more
Ed ~ At closest approach to the Earth on the 13th January, the asteroid will pass through the constellations of Orion, Taurus, and Pisces. Its maximum brightness is will be around magnitude 14, so to visually observe it will require at least an 8" telescope or above.
Image of asteroid 2010 AL30 taken at 2010 Jan 12 at 15h 46m UTC. The asteroid is the dot near the center of the image. Asteroid motion was 0.56"/sec. Source
Orbital elements: 2010 AL30 Earth MOID = 0.0000 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 281.43584 (2000.0) P Q n 0.98335199 Peri. 104.60274 -0.78961245 +0.61037246 a 1.0015287 Node 113.05297 -0.58600763 -0.71972231 e 0.3058382 Incl. 3.92034 -0.18195394 -0.33082512 P 1.00 H 27.1 G 0.15 U 5
It was discovered on January 10 by LINEAR, specifically by M. Blythe, G. Spitz, R. Brungard, J. Paige, P. Festler of 704 Lincoln Laboratory ETS, New Mexico using a 1.0-m reflector. Unusually, its orbital period is almost exactly 1.00 year which might mean it could be artificial in nature. However, its encounter velocity is high as it passes safely by the Earth which means it must almost certainly be of a natural origin, in which case it may be around 10 metres across. Read more
Orbital elements: 2010 AL30 Earth MOID = 0.0000 AU Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC M 281.41974 (2000.0) P Q n 0.98342606 Peri. 104.60234 -0.78961614 +0.61037063 a 1.0014784 Node 113.05321 -0.58599435 -0.71972705 e 0.3057074 Incl. 3.91857 -0.18198069 -0.33081817 P 1.00 H 27.0 G 0.15 U 6