Solar Debris. Asteroids, Meteors and Comets. Asteroids. Locations Types Meteors Impacts. What is an asteroid?. A small solar system object in orbit around the sun composed mostly of rock Sometimes called “Minor Planets”. Location of Asteroids. Near Earth Asteroids:
Asteroids, Meteors and Comets
Meteorites and Impacts
Pieces of M-Type asteroids
Crater Chain Tycho Crater
Similar size and same composition as other KBO’s
Eris “Xena” 2400 km
Pluto 2320 km
Sedna ~1800 km
136472 1800 km
136108 1600 km
Quaoar 1300 km
Major annual meteor showers:
Shower name Date CometComet
Quadrantid Jan 3 ? ?
Lyrid April 21 Thatcher 415 yrs
Eta aquarid May 4 Halley 76 yrs
Perseid Aug 11 Swift-Tuttle 105 yrs
Orionid Oct 31 Encke 3 yrs
Leonid Nov 16 Temple-Tuttle 33 yrs
Geminid Dec 13 Phaethon 1.4
Since Comets originate at the edges of our solar system, the Sun’s heat and radiation have not affected comets since their formation.
Because of this, comets still contain volatile elements from the solar system formation that have been baked out of other objects, such as asteroids and planets.
Therefore, comets are important to study. Their volatile elements give us unique information from the formation of our solar system.