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The average near-Earth asteroid, such as 2019 VF 5, passes Earth at 18 km/s. The average short-period comet passes Earth at 30 km/s, and the average long-period comet passes Earth at 53 km/s. [10] A retrograde parabolic Oort cloud comet (e=1, i=180°) could pass Earth at 72 km/s when 1 AU from the Sun.
Aten asteroid, Venus-crosser asteroid: Earth: 1.0000: Planet (164207) 2004 GU 9: 1.0004 [citation needed] Apollo asteroid, Earth co-orbital asteroid: 54509 YORP: 1.0012: Apollo asteroid (138852) 2000 WN 10: 1.0017 [citation needed] Apollo asteroid, Venus-crosser asteroid: 2001 GO 2: 1.00674: Apollo asteroid, Earth co-orbital asteroid: 2001 XX 4 ...
Near-Earth comets (NECs) are objects in a near-Earth orbit with a tail or coma made up of dust, gas or ionized particles emitted by a solid nucleus. Comet nuclei are typically less dense than asteroids but they pass Earth at higher relative speeds, thus the impact energy of a comet nucleus is slightly larger than that of a similar-sized ...
For a complete list of minor planets in numerical order, see List of minor planets. Asteroids are given minor planet numbers, but not all minor planets are asteroids. Minor planet numbers are also given to objects of the Kuiper belt , which is similar to the asteroid belt but farther out (around 30–60 AU), whereas asteroids are mostly between ...
These lists contain the Sun, the planets, dwarf planets, many of the larger small Solar System bodies (which includes the asteroids), all named natural satellites, and a number of smaller objects of historical or scientific interest, such as comets and near-Earth objects.
An Earth-crosser is a near-Earth asteroid whose orbit crosses that of Earth as observed from the ecliptic pole of Earth's orbit. [1] The known numbered Earth-crossers are listed here. Those Earth-crossers whose semi-major axes are smaller than Earth's are Aten asteroids ; the remaining ones are Apollo asteroids .
About 1000 objects per year EURONEAR: 2006 [2] International Near-Earth Asteroid Survey: Lincoln Near-Earth Asteroid Research (LINEAR) 1998 Lowell Observatory Near-Earth-Object Search: 1993 2008 Near Earth Object Surveillance Satellite: 2013 Microsatellite observatory Near-Earth Asteroid Tracking (NEAT) 1995 2007 NELIOTA: 2017 2023
Articles about near-Earth objects, including any small Solar System body whose orbit brings it into proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun ( perihelion ) is less than 1.3 astronomical units (AU).