New Calculations Show Asteroid Apophis to Skim Past Earth So Close We Will Be Able to See It Live

In an exciting astronomical event, asteroid Apophis is set to make a close approach to Earth on April 13, 2029. This massive asteroid, measuring about 1,100 feet across, will pass between our planet and its geostationary satellites, providing a unique opportunity for observation and study.

Key Takeaways

• Apophis will be visible to the naked eye as it approaches Earth.
• The asteroid will pass safely, with no risk of collision.
• NASA plans to send a spacecraft to study Apophis during its flyby.

The Discovery of Apophis

On June 19, 2004, astronomers at the Kitt Peak National Observatory in Arizona discovered Apophis while searching for asteroids. Initially designated as 2004 MN4, this asteroid quickly gained attention due to its potential to come close to Earth.

• Size: Approximately 1,100 feet (about 450 meters) across.
• Orbit: Takes 323.2 days to orbit the Sun, coming close to Venus before heading out beyond Earth’s orbit.
• Initial Risk: Early calculations indicated a 2.7% chance of impact on April 13, 2029.

Monitoring and Research

Following its discovery, scientists prioritized monitoring Apophis to determine its trajectory accurately. Observing an asteroid is challenging due to various factors:

1. Sunlight Interference: Some years, the asteroid is too close to the Sun to be seen from Earth.
2. Gravitational Influences: The gravitational pull from other celestial bodies can alter an asteroid’s path.
3. Yarkovsky Effect: This phenomenon describes how an asteroid’s rotation and heat absorption can change its trajectory over time.

The 2029 Flyby

On April 13, 2029, Apophis will make its closest approach to Earth, and it will be visible from various regions, including:

• The Atlantic Ocean
• Europe
• Africa
• Asia

As it approaches, Apophis will appear as a small dot in the night sky, gradually growing brighter until it becomes visible to the naked eye. This event is reminiscent of the Chicxulub asteroid that impacted Earth 66 million years ago, leading to the extinction of the dinosaurs.

NASA’s Plans for Exploration

NASA is already planning a mission to intercept Apophis during its flyby. The spacecraft, renamed Osiris Apex, will arrive at the asteroid in April 2029, coinciding with its close approach to Earth. This mission aims to gather valuable data on:

• The asteroid’s composition and structure.
• How it behaves when passing close to a massive gravitational body like Earth.

The Bounce Effect and Its Implications

Recent studies suggest that as our solar system passes through the Milky Way’s galactic plane, gravitational forces can dislodge comets and asteroids, increasing the likelihood of collisions with Earth. This phenomenon, known as the Bounce Effect, may explain the origins of some asteroids, including Apophis.

Conclusion

Mark your calendars for April 13, 2029! The flyby of asteroid Apophis presents a rare opportunity for scientists and skywatchers alike. This event not only allows us to observe a massive asteroid up close but also enhances our understanding of planetary defense and the dynamics of our solar system. Don’t miss this chance to witness a piece of cosmic history!