A good-sized asteroid will pass by Earth on Saturday, August 21, 2021. There is no danger it will strike our planet. It’s been designated as asteroid 2016 AJ193. It’s estimated to be just under a mile wide (1.4 km wide). And it’s moving fast.
NASA/JPL has classified 2016 AJ193 as a Potentially Hazardous Asteroid . However, the space rock’s orbit is well known and there is no risk of impact.
Move asteroids now before they become a threat, researchers argue | Space
To help prevent such a calamity, a pair of astronomers is proposing two new strategies. One, we should limit the number of asteroid missions to minimize human-caused orbital changes.
Space rocks hit Earth all the time. Thankfully, the vast majority are just meteoroids, bits of space junk no bigger than your hand. When they strike the atmosphere, the small ones (about the size of grains of sand) make brief-but-beautiful falling "stars.
Countdown to the asteroid-busters - The Hindu BusinessLine
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Astronomers Spot Two Unusually Red Objects in the Asteroid Belt
They're red, they're reasonably big, and they have no business being in the main asteroid belt, but their discovery confirms the complex conditions in place when the solar system was still forming.
Importantly, these red asteroids resemble trans-Neptunian objects, that is, objects located fa rther away than Neptune, the most distant planet from the Sun (with no disrespect to dwarf planet Pluto).
US Pentagon-sized asteroid to fly close to Earth in August - The Jerusalem Post
Bad Astronomy | Metal asteroid Psyche may have had volcanoes spewing out molten iron
I'm very excited about the Psyche mission. Due to launch next year, this NASA spacecraft will arrive at its target in the main asteroid belt four years later: The odd asteroid 16 Psyche.
Most asteroids are rocky, and some even have ice under their surface, but Psyche is an M-class asteroid, meaning it's highly metallic (mostly iron and nickel).
Scientists Surprised by Objects of "Complex Organic Matter" in Asteroid Belt
The two rocks, dubbed 203 Pompeja and 269 Justitia, showed up as glowing red in astronomical observations, far redder than any other known object in the asteroid belt.
The two asteroids, 70 and 35 miles across, could offer us clues about the chaotic early days of our solar system, billions of years ago — not to mention a sign that our cosmic neighborhood is still full of astonishing discoveries.
Optical Observations of BepiColombo Spacecraft as a Proxy for a Potential Threatening Asteroid
The incoming trajectory of the probe limited the ground-based observability to only a few hours, around the time when it was closest to Earth.
The final results were condensed into two measurable quantities that could be directly compared with the Mission Control ones, the perigee distance, and the time of the probe’s closest approach to Earth.
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