Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA

Washington, Aug 11 - A "potentially hazardous" giant asteroid is likely to come within about 4.3 million km of Earth on Friday, according to NASA