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Near Earth Object

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Car-sized asteroid to skim Earth tonight at about half the Moon's distance
space17 days ago

Car-sized asteroid to skim Earth tonight at about half the Moon's distance

A car-sized near-Earth asteroid named 2026 FM3, discovered days ago by the Zwicky Transient Facility at Palomar, will pass by Earth tonight at roughly 237,918 km (about 0.618 lunar distances) at ~11,461 mph. The flyby is timed for 10:07 p.m. EDT (02:07 GMT) and the object will also miss the Moon a few hours later, at about 595,492 km. With an estimated diameter of 4–8 meters, it poses no risk to Earth or the Moon, and NASA expects no close approaches for the next century. The event highlights how upcoming observatories will keep finding many more near-Earth objects.)

via Space|
#2026-fm3#asteroid#flyby
JWST refines 2024 YR4’s path, lunar impact odds drop to zero
space1 month ago

JWST refines 2024 YR4’s path, lunar impact odds drop to zero

NASA’s James Webb Space Telescope refined the trajectory of near-Earth asteroid 2024 YR4, eliminating the possibility it will hit the Moon and lowering the lunar‑impact probability from about 4.3% to zero. The asteroid will pass by the Moon at roughly 13,200 miles (21,200 km) from the lunar surface in 2032, while Earth remains safely distant. The rock is estimated at 53–67 meters in diameter, and JWST’s observations—among the faintest ever of an asteroid—pushed the telescope to its limits. NASA plans another JWST look at 2024 YR4 in 2028.

via Live Science|
#2024-yr4#james-webb-space-telescope#moon
Near-Earth 2-meter asteroid slips by 428 km from Earth undetected, exposing defense blind spots
science1 month ago

Near-Earth 2-meter asteroid slips by 428 km from Earth undetected, exposing defense blind spots

An ~2-meter asteroid named 2025 TF passed Antarctica at about 428 km altitude—too close to be safe and unseen until after it already flew by. The event underscores how detection of tiny near-Earth objects has surged (ATLAS and bigger datasets since 2000–07 vs 2017–26) but also reveals blind spots, as larger 200-meter rock 2025 FA22 was only spotted six months before a close approach. Rubin Observatory and NASA’s space-based NEO Surveyor (targeted for 2027) aim to close these gaps, improving lead times for potential deflections in the future.

via Boing Boing|
#asteroid#detection#near-earth-object
Small Asteroids Near Earth: Recent Close Encounters
science5 months ago

Small Asteroids Near Earth: Recent Close Encounters

A tiny asteroid about 3 to 10 feet wide, labeled 2025 TF, narrowly passed over Antarctica at an altitude of roughly 266 miles on October 1, 2025. It was detected a few hours after its closest approach, highlighting the challenges in spotting small, fast-moving objects in space. Despite its close pass, the asteroid posed no threat to Earth or satellites, and the event underscores the importance of ongoing sky surveys and rapid follow-up observations to improve early detection and risk assessment of near-Earth objects.

via Earth.com|
#2025-tf#asteroid#near-earth-object
Decade's Close Call: Asteroid 2025 FA22 Approaches Earth
science7 months ago

Decade's Close Call: Asteroid 2025 FA22 Approaches Earth

The potentially hazardous asteroid 2025 FA22, discovered in March 2023, will make a close approach to Earth on September 18-21, 2025, passing within the Moon's orbit but posing no impact threat. It will be visible to amateur astronomers with small telescopes and is the focus of a global observational campaign to study its characteristics and orbit, with a live stream available for public viewing.

via IFLScience|
#2025-fa22#asteroid#astronomy