Can Radio Telescopes Capture Detailed Images of Asteroids and Their Moons?

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In summary, Asteroid 2004-B186 is passing by this evening (monday), with a maximum magnitude of 9.5 (visible with bionculars/small telescopes).
  • #1
Andy Resnick
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Asteroid 2004-B186 is passing by this evening (monday), with a maximum magnitude 9.5 (visible with bionculars/small telescopes). Here's a chart:

http://neo.jpl.nasa.gov/images/2004bl86_starchart.jpg

Hoping for a (reasonably) clear evening...
 
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  • #3
wall to wall cloudy with rain here in eastern Australia :(
 
  • #4
Hm. 10 degrees of movement per 4 hours.

Not fast enough to be discernible to the eye, except if really close to some background stars.
 
  • #5
DaveC426913 said:
Hm. 10 degrees of movement per 4 hours.

Not fast enough to be discernible to the eye, except if really close to some background stars.

but easily picked up in photo's say 10 - 15 minutes apart :)

D
 
  • #7
The "Cloudy Nights" astro forum I'm on has a guy that posted his video of the asteroid to Youtube...



his comments in the forum are as follows ...

Pretty much sacrificed everything to optimize the video. Somebody better than me could probably separate the asteroid, process the background, then merge back the asteroid.
Celestron 80ED, Sony NEX5T, 3 second jpgs (the jpg format was a futile effort to minimize stuttering). ISO 6400 to keep the individual exposures short. Video made by PIPP, compressed with AVS video converter for upload.
Thanks to SergeC, whose lovely picture inspired me to press on when I thought I'd messed up (just imaged for a while before and after, this is 300 frames from 600 taken), Astronewb for his excellent stuff on the ZEQ25, TorstenEdlmann for pointing out the virtues of PIPP for another purpose, and tazer for the intervalometer program that drives the NEX.
Best viewed full screen, the asteroid enters on the lower edge, 2/3 left.
so cool! :)

cheers
Dave
 
  • #8
Pretty awesome radio-photos , Greg. I was unaware about such small asteroids having moons... Furthermore, that is an incredible series of shots, and showing great detail. I wish they would have given the time between each frame so we could determine the rotation rate; it appears to be a shot from directly above the rotation axis.. However, I am sort of stumped as to how they got such high resolution...down to several meters using a radio telescope.?. Yikes; Wasn't this thing almost 3 times the lunar distance. I find it hard to believe Goldstone can even get that sort of resolution on the lunar surface...I' certainly have never seen such. Maybe I'm just not up to date on radio imaging.
 

What is Asteroid 2004-B186?

Asteroid 2004-B186 is a small rocky object that orbits around the sun. It was first discovered in 2004 and is classified as a near-Earth asteroid.

How big is Asteroid 2004-B186?

The size of Asteroid 2004-B186 is estimated to be between 200-400 meters in diameter. This makes it relatively small compared to other asteroids in our solar system.

What is the fly-by of Asteroid 2004-B186?

The fly-by of Asteroid 2004-B186 refers to its close approach to Earth on a specific date. In this case, it refers to the asteroid passing by Earth at a distance of approximately 1.2 million miles on November 23, 2021.

Is Asteroid 2004-B186 a threat to Earth?

No, Asteroid 2004-B186 is not considered a threat to Earth. Its fly-by distance is relatively far and poses no risk of impact or damage to our planet.

What can we learn from the fly-by of Asteroid 2004-B186?

Scientists can use the fly-by of Asteroid 2004-B186 to gather data and study the asteroid's composition, size, and orbit. This information can help us better understand the origins of our solar system and potentially aid in the development of planetary defense strategies.

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