Aside from gravitational keyholes, another factor that can affect an asteroid's flight path is the Yarkovsky effect
. This occurs when heat from various sources such as sunlight alters the spin of an asteroid.
Scientists also hope to study the "Yarkovsky effect
" which suggests that small rocky space objects may be affected by the Sun's energy.
 investigate the possibility of detecting the Yarkovsky effect
via precise orbit determination of the near-earth asteroids on example of the asteroids 6489 Golevka, 1620 Geographos, 1566 Icarus, and 1998 KY26 with different values of the parameter da/dt.
Those included flying a spacecraft near the asteroid for a long time to act as a "gravity tractor" and pull it off course (deemed ineffective, unsurprisingly); using a large mirror to focus sunlight and "boil off" some material from the asteroid; a spacecraft "rendezvous" with the asteroid to "boil off" some material using a "pulse laser"; landing on the asteroid, drilling into it, and "eject[ing] material from PHO at high velocity"; "attach[ing]" a spacecraft to the asteroid and pushing it out of the way; and what NASA called the "Enhanced Yarkovsky Effect
" - altering the reflectiveness of a rotating asteroid and counting on the "radiation from sunheated material" to push the asteroid off course.
Adding to the uncertainty was the Yarkovsky effect
, a subtle radiation-pressure force caused by the uneven way that a spinning body absorbs sunlight and re-radiates the heat back into space.
A phenomenon called the Yarkovsky Effect
may affect asteroid orbits.
Scientists think this principle, called the Yarkovsky effect
, could be altered by painting an asteroid a less heat-absorbing color like white to alter its natural orbit.
This is known as the Yarkovsky effect
and can have a major influence on an asteroid's orbital path.
They cannot predict if the asteroid will hit earth because of what is known as the Yarkovsky effect
- the way the asteroid reflects sunlight - which can have a major influence on its orbit.
Named for the engineer who discovered the phenomenon a century ago, the Yarkovsky effect
stems from the way a spinning asteroid absorbs and reradiates solar energy.
One of these is the Yarkovsky effect
. According to this concept, an asteroid's trajectory can change if external or internal heat sources affect its spin.