Near-Earth object
A near-Earth object ( NEO ) is any small Solar System body whose orbit can bring 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). [2] If a NEO's orbit crosses the Earth's and the object is larger than 140 meters (460 ft) across, it is considered a potentially hazardous object (PHO). [3] Most known PHOs and NEOs are asteroids , but a small fraction are comets . [1]
Page Revisions
| Year | Metadata | Sections | Top Words | First Paragraph |
| 2018 |
426008 characters 24 sections 90 paragraphs 31 images 585 internal links 297 external links |
asteroids 0.304 neos 0.299 neas 0.286 asteroid 0.279 earth 0.193 comet 0.178 comets 0.135 neo 0.125 torino 0.120 spaceguard 0.119 palermo 0.118 ft 0.113 object 0.108 objects 0.108 necs 0.104 |
A near-Earth object ( NEO ) is any small Solar System body whose orbit can bring 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). [2] If a NEO's orbit crosses the Earth's and the object is larger than 140 meters (460 ft) across, it is considered a potentially hazardous object (PHO). [3] Most known PHOs and NEOs are asteroids , but a small fraction are comets . [1] |
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| 2017 |
315560 characters 18 sections 70 paragraphs 25 images 543 internal links 152 external links |
neos 0.349 neas 0.315 asteroids 0.261 asteroid 0.258 earth 0.204 torino 0.152 palermo 0.149 objects 0.140 comet 0.135 spaceguard 0.131 sentry 0.112 update 0.109 risk 0.101 approach 0.100 rating 0.099 |
A near-Earth object ( NEO ) is any small Solar System body whose orbit can bring it into proximity with Earth . By definition, a solar system body is a NEO if its closest approach to the Sun ( perihelion ) is less than 1.3 astronomical unit (AU). [2] If a NEO's orbit crosses that of the Earth's and the object is larger than 140 meters across, it is considered a Potentially Hazardous Object (PHO). [3] As of November 2017 [update] , all known PHOs are Potentially Hazardous Asteroids (PHAs). [1] |
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| 2016 |
244898 characters 17 sections 51 paragraphs 24 images 528 internal links 91 external links |
1. History of human awareness of NEOs |
neos 0.312 asteroids 0.308 neas 0.294 earth 0.230 asteroid 0.209 objects 0.203 spaceguard 0.157 torino 0.141 palermo 0.133 nea 0.132 000 0.128 risk 0.111 megatonnes 0.104 mi 0.093 comets 0.089 |
A near-Earth object ( NEO ) is any small Solar System body whose orbit brings it into proximity with Earth . By definition, a solar system body is a NEO if its closest approach to the Sun ( perihelion ) is less than 1.3 astronomical unit (AU). [2] NEOs include more than fourteen thousand near-Earth asteroids (NEAs), more than one hundred near-Earth comets (NECs), and a number of solar-orbiting spacecraft and meteoroids , large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the Earth. [3] NEOs have become of increased interest since the 1980s because of increased awareness of the potential danger some of the asteroids or comets pose, and mitigations are being researched. [4] In January 2016, NASA announced the Planetary Defense Coordination Office to track NEOs larger than 30 to 50 meters in diameter and coordinate an effective threat response and mitigation effort. [5] |
| 2015 |
195230 characters 17 sections 48 paragraphs 24 images 369 internal links 80 external links |
1. History of human awareness of NEOs 2. Number and classification of near-Earth objects |
asteroids 0.329 neos 0.321 neas 0.253 earth 0.229 objects 0.200 asteroid 0.190 nea 0.145 torino 0.129 000 0.125 megatonnes 0.114 spaceguard 0.114 risk 0.111 palermo 0.104 mi 0.102 comets 0.098 |
A near-Earth object ( NEO ) is any small Solar System body whose orbit brings it into proximity with Earth . By definition, all NEOs have a closest approach to the Sun ( perihelion ) of less than 1.3 astronomical unit (AU). [2] They include about thirteen thousand near-Earth asteroids (NEAs), more than one hundred near-Earth comets (NECs), and a number of solar-orbiting spacecraft and meteoroids , large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the planet. [3] NEOs have become of increased interest since the 1980s because of increased awareness of the potential danger some of the asteroids or comets pose to Earth, and active mitigations are being researched. [4] |
| 2014 |
172611 characters 16 sections 46 paragraphs 21 images 345 internal links 66 external links |
1. History of human awareness of NEOs 2. Number and classification of near-Earth objects |
asteroids 0.349 neos 0.344 earth 0.236 asteroid 0.191 neas 0.185 objects 0.172 nea 0.170 torino 0.130 palermo 0.125 000 0.121 29075 0.115 megatonnes 0.115 spaceguard 0.115 risk 0.111 1950 0.094 |
A near-Earth object ( NEO ) is a Solar System object whose orbit brings it into proximity with Earth . All NEOs have a closest approach to the Sun ( perihelion ) of less than 1.3 AU . [2] They include more than ten thousand near-Earth asteroids (NEAs), near-Earth comets , a number of solar-orbiting spacecraft , and meteoroids large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the planet. [3] NEOs have become of increased interest since the 1980s because of increased awareness of the potential danger some of the asteroids or comets pose to Earth, and active mitigations are being researched. [4] |
| 2013 |
222620 characters 24 sections 58 paragraphs 15 images 400 internal links 104 external links |
1. History of human awareness of NEOs 2. Number and classification of near-Earth objects |
asteroids 0.304 neos 0.300 earth 0.223 asteroid 0.208 neas 0.161 objects 0.156 tunguska 0.148 nea 0.148 object 0.140 torino 0.136 tnt 0.127 000 0.114 estimated 0.114 palermo 0.109 fireball 0.106 |
A near-Earth object ( NEO ) is a Solar System object whose orbit brings it into proximity with Earth . All NEOs have a closest approach to the Sun ( perihelion ) of less than 1.3 AU . [1] They include a few thousand near-Earth asteroids (NEAs), near-Earth comets , a number of solar-orbiting spacecraft , and meteoroids large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the planet. [2] NEOs have become of increased interest since the 1980s because of increased awareness of the potential danger some of the asteroids or comets pose to the Earth, and active mitigations are being researched. [3] |
| 2012 |
160883 characters 21 sections 50 paragraphs 12 images 338 internal links 84 external links |
2. Number and classification of near-Earth objects |
asteroids 0.335 neos 0.305 earth 0.245 asteroid 0.218 neas 0.164 objects 0.159 torino 0.158 palermo 0.127 megatonnes 0.117 spaceguard 0.117 object 0.114 000 0.112 tnt 0.106 estimated 0.099 tunguska 0.099 |
A near-Earth object ( NEO ) is a Solar System object whose orbit brings it into proximity with the Earth. All NEOs have a closest approach to the Sun ( perihelion ) of less than 1.3 AU . [1] They include a few thousand near-Earth asteroids (NEAs), near-Earth comets , a number of solar-orbiting spacecraft, and meteoroids large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the planet. [2] NEOs have become of increased interest since the 1980s because of increased awareness of the potential danger some of the asteroids or comets pose to the Earth, and active mitigations are being researched. |
| 2011 |
145575 characters 20 sections 46 paragraphs 13 images 321 internal links 75 external links |
2. Number and classification of near-Earth objects |
neos 0.308 asteroids 0.305 earth 0.244 asteroid 0.219 objects 0.181 torino 0.171 neas 0.153 palermo 0.138 megatonnes 0.127 spaceguard 0.127 object 0.115 tnt 0.115 tunguska 0.107 rating 0.105 orbits 0.104 |
A near-Earth object ( NEO ) is a Solar System object whose orbit brings it into close proximity with the Earth. All NEOs have a perihelion distance less than 1.3 AU . [1] They include a few thousand near-Earth asteroids (NEAs), near-Earth comets , a number of solar-orbiting spacecraft, and meteoroids large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the planet. [2] NEOs have become of increased interest since the 1980s because of increased awareness of the potential danger some of the asteroids or comets pose to the Earth, and active mitigations are being researched. A study showed that the United States and China are the nations most vulnerable to a meteor strike. [3] |
| 2010 |
113721 characters 16 sections 41 paragraphs 10 images 247 internal links 59 external links |
2. Number and classification of near-Earth objects |
neos 0.319 asteroids 0.296 earth 0.247 asteroid 0.227 objects 0.187 torino 0.178 palermo 0.143 neas 0.132 megatonnes 0.131 spaceguard 0.131 object 0.119 comets 0.113 tunguska 0.111 rating 0.109 orbits 0.108 |
A near-Earth object ( NEO ) is a Solar System object whose orbit brings it into close proximity with the Earth. All NEOs have a perihelion distance less than 1.3 AU . [1] They include a few thousand near-Earth asteroids (NEAs), near-Earth comets , a number of solar-orbiting spacecraft, and meteoroids large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the planet. [2] NEOs have become of increased interest since the 1980s because of increased awareness of the potential danger some of the asteroids or comets pose to the Earth, and active mitigations are being researched. A study showed that the United States and China are the nations most vulnerable to a meteor strike. [3] |
| 2009 |
125045 characters 20 sections 47 paragraphs 11 images 252 internal links 61 external links |
1. Classification of near-Earth objects by kind and size 2. Planet Earth collision probability with near-Earth objects 3. Projects to minimize the threat |
neos 0.381 asteroids 0.271 earth 0.246 asteroid 0.224 torino 0.190 objects 0.187 object 0.134 palermo 0.131 neas 0.121 megatonnes 0.120 2008 0.117 tunguska 0.101 rating 0.099 orbits 0.091 impact 0.091 |
A near-Earth object ( NEO ) is a Solar System object whose orbit brings it into close proximity with the Earth. All NEOs have a perihelion distance < 1.3 AU . [1] They include a few thousand near-Earth asteroids (NEAs), near-Earth comets , a number of solar-orbiting spacecraft, and meteoroids large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the planet. NEOs have become of increased interest since the 1980s because of increased awareness of the potential danger some of the asteroids or comets pose to the Earth, and active mitigations are being researched. A study showed that the United States and China are the nations most vulnerable to a meteor strike. [2] |
| 2008 |
121983 characters 20 sections 42 paragraphs 7 images 285 internal links 56 external links |
1. Classification of near-Earth objects by kind and size 2. The Near Earth Objects threat 3. Projects to minimize the threat |
neos 0.413 asteroids 0.273 earth 0.241 objects 0.202 asteroid 0.198 torino 0.176 neas 0.131 megatonnes 0.130 2008 0.118 palermo 0.118 object 0.109 orbits 0.107 29075 0.098 phos 0.098 spaceguard 0.098 |
Near-Earth objects ( NEOs ) are Solar System objects whose orbits bring them into close proximity with the Earth. All have a perihelion distance < 1.3 AU ) [1] . They include a few thousand Near-Earth asteroids (NEAs), Near-Earth Comets , a number of solar-orbiting spacecraft, and meteoroids large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the planet. NEOs have become of increased interest since the 1980s because of increased awareness of the potential danger some of the asteroids or comets pose to the Earth, and active mitigations are being actively pursued. |
| 2007 |
26374 characters 7 sections 12 paragraphs 1 images 85 internal links 11 external links |
neos 0.376 neo 0.373 29075 0.215 torino 0.194 rating 0.190 da 0.187 asteroids 0.179 2004 0.164 1950 0.157 fh 0.144 fu162 0.144 wise 0.124 neas 0.116 palermo 0.104 earth 0.101 |
Near-Earth objects ( NEOs ) are asteroids , comets and large meteoroids whose orbits bring them close ( perihelion distance < 1.3 AU ) to Earth 's orbit, [1] and which may therefore pose a collision danger. Due to their size and proximity, NEOs are also more easily accessible for spacecraft from Earth and are important for future scientific investigation and commercial development. In fact, some near-Earth asteroids can be reached with a much smaller change in velocity ( ΔV ) than the Moon . |
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| 2006 |
22786 characters 6 sections 10 paragraphs 1 images 80 internal links 7 external links |
neo 0.419 29075 0.242 neos 0.241 torino 0.218 rating 0.213 da 0.209 2004 0.184 1950 0.176 asteroids 0.175 fh 0.161 fu162 0.161 collision 0.121 palermo 0.117 2029 0.111 earth 0.105 |
Near-Earth objects (NEO) are asteroids , comets and large meteoroids whose orbit intersects Earth 's orbit and which may therefore pose a collision danger. Due to their size and proximity, NEOs are also more easily accessible for spacecraft from Earth and are important for future scientific investigation and commercial development. In fact, some near-Earth asteroids can be reached with a much smaller change in velocity ( ΔV ) than the Moon . |
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| 2005 |
18049 characters 5 sections 10 paragraphs 1 images 75 internal links 6 external links |
neo 0.434 29075 0.250 neos 0.250 da 0.217 1950 0.183 asteroids 0.182 2004 0.169 fh 0.167 fu162 0.167 rating 0.166 torino 0.151 collision 0.125 palermo 0.121 2029 0.115 earth 0.109 |
Near-Earth objects (NEO) are asteroids , comets and large meteoroids whose orbit intersects Earth 's orbit and which may therefore pose a collision danger. Due to their size and proximity, NEOs are also more easily accessible for spacecraft from Earth and are important for future scientific investigation and commercial development. In fact, some near-Earth asteroids can be reached with much less ΔV (change in velocity) than the Moon . |
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| 2004 |
16985 characters 5 sections 11 paragraphs 1 images 62 internal links 6 external links |
neos 0.340 neo 0.295 29075 0.272 torino 0.246 da 0.236 2004 0.230 1950 0.199 fh 0.182 asteroids 0.169 rating 0.120 meteoroids 0.111 earth 0.109 approach 0.108 collision 0.102 closest 0.094 |
Near-Earth objects (NEO) are asteroids , comets and large meteoroids whose orbit intersects Earth 's orbit and which may therefore pose a collision danger. Due to their size and proximity, NEOs are also more easily accessible for spacecraft from Earth and are important for future scientific investigation and commercial development. In fact, some near-Earth asteroids can be reached with much less ΔV (change in velocity) than the Moon . |
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| 2003 |
5441 characters 2 sections 6 paragraphs 0 images 22 internal links 6 external links |
neo 0.621 da 0.266 1950 0.224 neos 0.204 collision 0.154 await 0.137 spaceguard 0.137 classification 0.130 currently 0.128 2880 0.123 torino 0.123 scanning 0.106 δv 0.106 estimates 0.101 003 0.099 |
Near-Earth Objects (NEO) are asteroids , comets and large meteoroids whose orbit intersects Earth 's orbit and which may therefore pose a collision danger. Due their size and proximity, NEO's are also more easily accessible for spacecraft from Earth and are important for future scientific investigation and commercial development. In fact, some near-Earth asteroids can be reached with much less ΔV ( change in velocity ) than the Moon . |
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| 2002 |
3459 characters 0 sections 5 paragraphs 0 images 13 internal links 2 external links |
neo 0.691 await 0.177 spaceguard 0.177 classification 0.169 scanning 0.137 δv 0.137 neos 0.133 surveyed 0.129 mandate 0.120 congressional 0.117 danger 0.115 intersects 0.113 asteroids 0.110 catalogue 0.108 meteoroids 0.108 |
Near-Earth Objects (NEO) are asteroids , comets and large meteoroids whose orbit intersects Earth 's orbit and which may therefore pose a collision danger. Due their size and proximity, NEO's are also more easily accessible for spacecraft from Earth and are important for future scientific investigation and commercial development. In fact, some near-Earth asteroids can be reached with much less ΔV ( change in velocity ) than the Moon . |
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| 2001 |
1191 characters 0 sections 6 paragraphs 0 images 4 internal links 0 external links |
classification 0.605 torino 0.573 hazard 0.343 kind 0.264 object 0.178 objects 0.165 scale 0.150 earth 0.127 size 0.120 impact 0.074 |