![]() ![]() This is an estimate based on the absolute magnitude, usually assuming a uniform spherical body with visual albedo pV = 0.154 (in accordance with the Palermo Scale) but sometimes using actual measured values if these are available. Estimated Diameter (km) Estimated diameter of the asteroid. It is the apparent magnitude of the object when it is 1 au from both the sun and the observer, and at full phase for the observer. H (mag) Absolute Magnitude, a measure of intrinsic brightness. ![]() V infinity (km/s) Velocity of the asteroid relative to the Earth, assuming a massless Earth. Impact Probability (cumulative) Sum of the impact probabilities from all detected potential impacts. There can be several qualitatively unique pathways to impact in a given year, e.g., some with an extra revolutions around the sun, others deflected to impact by an earlier planetary encounter. Potential Impacts Number of dynamically distinct potential impacts that have been detected by Sentry. Typically, searches are conducted 100 years into the future. Year Range Time span over which impacts have been detected. Object Designation Temporary designation or permanent number for this object. All other colors (green, yellow, orange, and red) represent their respective Torino scale. White or gray colors indicate a Torino scale of 0 or undefined. A light-blue color indicates a small object (estimated diameter of 50 meters or less). Small objects are not likely to cause significant damage in the event of an impact, although impact damage does depend heavily upon the specific (and usually unknown) physical properties of the object in question. Coloration The color of the table row gives a rough interpretation of the severity of the threat. ![]()
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