An asteroid that could pose a threat to the earth is found, the sun is too bright to discover
A new asteroid with an orbit close to Earth has been discovered. This asteroid is believed to be the largest discovered since 2014 and has been pointed out to have the potential danger of colliding with Earth. This asteroid was not discovered until now because it lies in a region that is strongly illuminated by the Sun.
A Deep and Wide Twilight Survey for Asteroids Interior to Earth and Venus - IOPscience
Scientists Find Potentially Hazardous Asteroid Hiding in the Sun's Glare
Asteroids that may approach the Earth's orbit are called `` Near- Earth Asteroids (NEA) '', and 1454 have been confirmed by 2022.
Scott Shepard of the Carnegie Institute and others targeted areas that are normally invisible due to the effects of sunlight, and used a `` dark energy camera '' made to investigate dark energy. The Blanco telescope at the Cerro Tololo Inter-American Observatory in Chile has successfully detected an object inside the Earth's orbit by capturing a faint light from afar.
The object discovered this time was named '2022 AP7'. 2022 AP7 is considered to be classified as a ' Potentially Hazardous Asteroid (PHA) ' that has a particularly high chance of colliding with the Earth among NEAs, and may eventually collide with the Earth over time. That's what I'm talking about. Calculating the apparent movement, the diameter is thought to be 1.0 to 2.3 km, making it the largest PHA found since 2014. However, the 2022 AP7 poses no immediate threat.
``2022 AP7's orbital period is just close to five years, and since it is a large object, we can expect it to be confirmed early by future NEO surveys,'' Shepard said.
So far, the Hubble Space Telescope and the Webb Space Telescope have observed distant asteroids one after another. Therefore, it is more difficult to find an asteroid between the sun and the earth than it is to find an asteroid farther than the sun. ``2022 AP7 sets a precedent that shows that relatively large telescopes looking toward the Sun can find large NEOs that most current NEO explorations cannot efficiently find,'' said Shepard.
in Science, Posted by log1p_kr