Related articles:
Impact event
Torino Scale
Stargate SG-1
Key terms:
apophis
impact
asteroid
orbit
nasa
jpl
observations
rated
torino scale
probe
refined
lowered
tracking
deflection
orion
apep
planetary
megaton
impact probability
satellites
sentry
palermo
close approach
trajectory
one pass
uncertainty
will pass
path of risk
foresight
based upon
geosynchronous
observations spanning
space probe
predictions
don quijote
gmt on december
hazard scale
eads astrium
scale rating
based on a total
other passes
impact would
deflection strategies
spacecraft would
principal investigator
planetary society
planetary defense
additional observations
arecibo observatory
provisional designation
Search external links cited by footnotes on Wikipedia page 99942 Apophis:
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