Why is Apophis’ 2029 flyby so rare?
Asteroid 99942 Apophis is expected to pass within roughly 20,000 miles of Earth on April 13, 2029. According to NASA, that is nearly 12 times closer than the moon’s average distance from our planet and even closer than many satellites in geosynchronous orbit, as per ABC News.
This makes it one of the closest recorded flybys ever for an object of its size. The asteroid has a mean diameter of about 1,115 feet and a long axis measuring at least 1,480 feet, making it a significant near-Earth object.
When it was first discovered in 2004, Apophis quickly drew worldwide attention after being labeled potentially hazardous due to early projections suggesting possible impacts in 2029, 2036 or 2068. However, years of observations using optical telescopes and radar have now confirmed that it poses no threat to Earth for at least the next century, as per ABC News.
Will the asteroid be visible without a telescope?
One of the most exciting aspects of this event is that it will be visible to the naked eye. Astronomers say sky-watchers in the Eastern Hemisphere should be able to see the asteroid without the need for binoculars or a telescope, weather permitting.
That alone makes the 2029 flyby especially remarkable. Rarely does an asteroid of this scale come close enough to be seen so easily from the ground.
The space rock is named after Apophis, the Greek form of Apep, the Egyptian god linked to chaos, darkness and fire. The dramatic name only adds to the excitement surrounding what many are calling a historic sky event.
What will scientists learn from the close approach?
The flyby is not just a visual spectacle. It also presents a major research opportunity. Scientists believe Apophis is a relic from the early solar system, formed around 4.6 billion years ago from leftover material that never became part of a planet or moon. Its surface has been altered over time by solar wind and cosmic rays, giving researchers a chance to study how space weather affects asteroids, as per ABC News.
NASA has already redirected a spacecraft to meet Apophis shortly after the 2029 pass, while the European Space Agency is also planning a mission to study it.
Astronomers say Earth’s gravitational pull may slightly alter the asteroid’s orbit around the sun during the close encounter, but the impact risk will remain unchanged. For sky-watchers and scientists alike, April 13, 2029 promises to be an unforgettable moment.
FAQs
When will Apophis pass Earth?
It is expected to make its close approach on April 13, 2029.
Will the asteroid hit Earth?
No, astronomers say there is no risk of impact for at least 100 years.