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Among the numbered minor planets with an unambiguous period solution are (459872) 2014 EK 24, a 60-meter sized stony NEO with a period of 352 seconds, as well as (335433) 2005 UW 163 and (60716) 2000 GD 65, two main-belt asteroids, with a diameter of 0.86 and 2.25 kilometers and a period of 1.29 and 1.95 hours, respectively (see full list).
This is a list of asteroids that have impacted Earth after discovery and orbit calculation that predicted the impact in advance. As of December 2024 [update] , all of the asteroids with predicted impacts were under 5 m (16 ft) in size that were discovered just hours before impact, and burned up in the atmosphere as meteors .
Specifically, an asteroid is a PHA if its Earth minimum orbital intersection distance (MOID) is <0.05 AU and its absolute magnitude is 22 or brighter. [2] The concept of PHA is intended to replace the now abandoned strict definition of ECA (Earth-crossing asteroid) which existed for a few years.
These are lists of asteroids, e.g. by discoverer or by number. See list of minor planets for an overview and numbering and naming conventions . Pages in category "Lists of asteroids"
Therefore, this article will restrict itself for the most part to the classical asteroids: objects of the asteroid belt, Jupiter trojans, and near-Earth objects. For almost two centuries after the discovery of Ceres in 1801, all known asteroids spent most of their time at or within the orbit of Jupiter, though a few, such as 944 Hidalgo ...
The list below shows all approaches by potentially hazardous objects (objects which can approach Earth within 0.05 astronomical units (AU)) without atmospheric contact which have been the closest ever observed at some point in time, from the discovery of the first such object to the record holder as of February 2025.
Earth Co-Orbital Largest (85770) 1998 UP 1: 0.999: In Earth's Zone of Influence Aphelion Records Object Q (AU) notes Smallest (434326) 2004 JG 6: 0.973: Apohele asteroid, smallest of all asteroids Smallest (numbered) (33342) 1998 WT 24: 1.019: smallest of all numbered asteroids Smallest (named) 2062 Aten: 1.143: smallest of all named asteroids ...
These asteroids are in stable 2:1 libration with Jupiter, in high-inclination orbits. There are about 5 to 10 of these known so far, with 1362 Griqua and 8373 Stephengould the most prominent. The Cybele asteroids have a mean orbital radius between 3.27 AU and 3.7 AU, [3] an eccentricity less than 0.3, [4] and an inclination less than 30°. [3]