beamjockey: Drawing of Bill of the Heterodyne Boys by Phil Foglio. (Default)
Asteroid 4942 has been named Munroe, after Randall Munroe, the cartoonist who draws XKCD. Here is its entry in the Small Bodies Database.
The first thing I did was try to figure out whether 4942 Munroe was big enough to pose a threat to Earth. I was excited to learn that, based on its albedo (brightness), it’s probably about 6-10 kilometers in diameter. That’s comparable in size to the one that killed the dinosaurs—definitely big enough to cause a mass extinction!
Congratulations, Randall!

Please don't kill us all.
beamjockey: Drawing of Bill of the Heterodyne Boys by Phil Foglio. (Default)
Congratulations to our Canadian friends, whose several spacecraft have today been launched into orbit by the Indian Space Research Organization. BRITE-Austria and its sister UniBRITE, the smallest space telescopes ever, were designed in Canada, but will be operated by Austrian universities. They'll study variability in bright stars. Sapphire will track high-Earth-orbit objects for the Department of National Defence. NEOSSat will also track orbiting objects part-time, and will spend the rest of its time searching for asteroids at angles relatively near the Sun (where an earthbound telescope would see only daytime sky).

Space.com ran a good interview about NEOSSat with planetary scientist Alan Hildebrand.

On the same page, Space.com also featured a photo of the telescope carried by NEOSSat, which I found interesting:

NEOSSat vs Dodge Durango


Superimposed on it was an advertisement that included an illustration of a Dodge Durango.

The ad may give a misleading impression of the telescope's size.
Behind the cut, another perspective )
beamjockey: Drawing of Bill of the Heterodyne Boys by Phil Foglio. (Default)
A novel way to celebrate the onset of New Year: Wetumpka, Alabama dropped an asteroid at midnight.

The "Asteroid Drop" commemorated the greatest natural disaster of Alabama history. Wetumpka sits on the rim of a large crater. Scientists say it's evidence of a meteor strike some 83 million years ago.

[...]

Of course, the citizens of Wetumpka have known about the crater since the discovery of the site in the late 1970's. But this was the first time the city came out to celebrate this particular part of it's history.

And what better place to do it than on the edge of the crater -- downtown Wetumpka.?

"A number of years ago, I was driving by here and thought, 'This street goes across. This street makes a T. The courthouse sits on a square like Times Square. Put a ball at the top and we'll have New Year's Eve.' So that's how it got started," Devenney said.

"Some Boy Scouts are going to flip the lights on the ground and light the ball. A couple of flares will go off on the ground. If everything goes well, it will look like real," explained co-organizer Donald Carey.

Saturday night's meteor impact was much more family-friendly than the first. Scientists estimate the energy released from the original impact was 175,000 times more powerful than a nuclear bomb.
beamjockey: Drawing of Bill of the Heterodyne Boys by Phil Foglio. (Default)
Hayabusa has been out of touch since 9 December. JAXA (warning, translation bumps ahead) is now hoping to restore communication with the spacecraft in time to command an opportunity to return to Earth in 2010, rather than the planned 2007 pass. Seems unlikely that it actually completed its asteroid landing and sample-grab.
beamjockey: Drawing of Bill of the Heterodyne Boys by Phil Foglio. (Default)
Hayabusa aborted its planned "landing" on asteroid Itokawa. I hope there will be another opportunity to get a surface sample and drop the bouncing Minerva probe.
beamjockey: Drawing of Bill of the Heterodyne Boys by Phil Foglio. (Default)
After more than two years in transit, Hayabusa has arrived at Itokawa!

Portrait of asteroid Itokawa
beamjockey: Drawing of Bill of the Heterodyne Boys by Phil Foglio. (Default)
Japan's ion-powered Hayabusa spacecraft is acquiring opnav images of asteroid 25143 Itokawa with its star tracker. Rendezvous next month.

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