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@cosmos4u@scicomm.xyz
2026-07-06 02:44:38

This is the *other* #asteroid visited by an Asian spacecraft this month: tiny (469219) Kamo`oalewa - the bar measures 10 meters - as seen by China's #Tianwen2 from 20 km distance ahead of a #SampleReturnMission: facebook.com/Spacewalk2021/pos (see also the paper arxiv.org/abs/2606.24017 about JWST observations of the asteroid).

@cosmos4u@scicomm.xyz
2026-07-05 00:02:11

In 6 hours - at 6:00 UTC - a webcast (with commentary in Japanese) at #Hayabusa2 visit to #asteroid (98943) #Torifune. See also x.com/haya2_jaxa/status/207338 for unresolved approach images, monitormyplanet.com/posts/5707 for a prediction of the rotation state during the encounter, global.jaxa.jp/press/2026/06/2 for its importance, hayabusa2.jaxa.jp/topics/20260 for where the asteroid is in the sky and space.com/astronomy/asteroids/ and astropics.bookbright.co.jp/hay for preview articles.

@davej@dice.camp
2026-06-24 09:56:34

An #asteroid hit deep in the #Australian #outback. What it left may have broken a record.
Australian researchers say they have found evidence of Earth’s oldest known asteroid

@cosmos4u@scicomm.xyz
2026-06-18 22:20:56

The Lucy flyby of (52246) #Donaldjohanson - a bilobed #asteroid with tumbling rotation: #Lucy Reveals Wobbling, Peanut-Shaped Asteroid: science.nasa.gov/missions/nasa

@cosmos4u@scicomm.xyz
2026-06-25 00:20:47

The #Hayabusa2 spacecraft in its extended mission has sighted the #asteroid (98943) #Torifune which it will pass on 5 July: hayabusa2.jaxa.jp/topics/20260 - see also youtube.com/watch?v=zs3434wHA_Y for a recorded press conference.

@cosmos4u@scicomm.xyz
2026-05-19 01:03:38

Accessible does not mean exploitable - HiPERCAM reveals the ultra-fast rotation of 2022 OB5: #Asteroid 2022 OB5 Spins Too Fast For Current Prospectors Highlighting the Divide Between "Accessible" and "Exploitable": universetoday.com/articles/ast

@cosmos4u@scicomm.xyz
2026-05-15 22:26:01

A Census before Rubin of #Asteroid Families in the Main Belt: iopscience.iop.org/article/10. -> more graphics in the thread bsky.app/profile/thunkii.bsky.

@cosmos4u@scicomm.xyz
2026-05-16 02:12:08

There was another case Friday of a tiny (probably < 1 meter) #asteroid hitting the Earth and getting discovered a few hours before but no detection of its airburst near Papua New Guinea has been reported so far: minorplanetcenter.net/mpec/K26 = the circumstances (with the designation 2026 JN4 for the has-been object), groups.io/g/mpml/topic/1193282 and groups.io/g/mpml/topic/1193283 = threads and bsky.app/profile/tony873004.bs = an animation.