Apophis

Asteroid 99942 Apophis

Size:350 m(1150 ft)

Possible impact:Low 2029,High 2036

Risk level:High,equal as 880 megatons

Orbit Apophis

Solutions:

- Fragmenting

- Nuclear weapons

- Spacecraft to collide with the asteroid

- Move asteroid slowly over a period of time

- Focused solar energy

2002NT7

Asteroid (89959) 2002 NT7

Size:2000 metres

Possible impact:Low 2019

Risk level:High,wide devastation

2003 UB313

Designation 2003 UB313

The discovery team (Mike Brown of Caltech, Chad Trujillo of Gemini and David Rabinowitz of Yale)

Probably a bit bigger than Pluto

Location on discovery:Kuiper Belt

KBO KX76

Kuiper belt objects(KBOs)

Kuiper belt objects (KBOs) has increased to over a thousand,more than 70 000 KBOs over 100 km in diameter are believed to reside there !