But, the 2013 flyby is by far the closest the asteroid will approach our planet for many decades. The next notable close approach to Earth will be on February 15, 2046, when the asteroid will pass no closer than 620,000 miles (1,000,000 kilometers) from the center-point of Earth.
ankylosing spondylitis. Description. Ankylosing spondylitis is a form of ongoing joint inflammation (chronic inflammatory arthritis) that primarily affects the spine. This condition is characterized by back pain and stiffness that typically appear in adolescence or early adulthood.
In a person with ankylosing spondylitis, the joints and ligaments that normally permit the spine to move become inflamed and stiff. The bones of the spine may grow together, causing the spine to become rigid and inflexible. Other joints such as the hips, shoulders, knees, or ankles also may become involved.