Of all the animals of prey, man is the only sociable one.
Every one of us preys upon his neighbour, and yet we herd together.
The Beggar's Opera: John Gay

Friday 27 January 2012

Where's Lembit Opik when we need him?

A busy afternoon but I couldn't let this one pass unremarked. Opik may have strayed from his erstwhile preoccupation but some of us are still watching the skies:

An asteroid will pass by the Earth on Friday in something of a cosmic near-miss, making its closest approach at about 1600 GMT.

At its closest, the space rock - named 2012 BX34 - will pass within about 60,000km of Earth - less than a fifth of the distance to the Moon.

A near thing, in cosmic terms, but a long way from sending us the way of the dinosaurs; in any case, the asteroid in question, first detected on Wednesday, is a mere 11m in diameter.

There seems to have been some uncertainty about its exact path:

Earlier estimates put the asteroid's closest distance at as little as 20,000km, near the distance at which geostationary satellites reside, but observations overnight showed it will pass at a more comfortable distance.

That's quite a difference; the predictability of Newtonian mechanics is all very well but you can only calculate with the observational data you have available - in this case, that has evidently been subject to a certain amount of revision.

"It's one of the top 20 closest approaches recorded," said Gareth Williams, associate director of the US-based Minor Planet Center.

So quite a rare occurrence, then? Er, no; according to a NASA statement last year, an object of this size can be expected to come this close to Earth about every 6 years or so, on average. They may want to rethink that calculation, though...

The asteroid's path makes it the closest space-rock to pass by the Earth since object 2011 MD in June 2011.

That one, you may recall, passed us by at 12,000km, while in September 2010, one whizzed by a more generous 80,000km away. Certainly these are vast distances when you're talking about a rock a few metres in diameter, but it does suggest there are quite a few of the things up there.

So for all the apocaholics out there, don't worry; there'll be another one along soon! Meanwhile, we in the Tavern always regard a passing asteroid as the perfect excuse for a party; feel free to join us in spirit (or spirits).

8 comments:

  1. Remember seeing Halley'sout at the country property of a friend and I believe a certain amount was imbibed that night as well.

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  2. The interval of Halley's is about as depressing as it gets - you don't mind knowing you'll never see Hale-Bopp again (expected interval c.2,500 years) but with Halley's, some might just squeeze two sightings into a lifetime; musing on your chances is a gloomy business.

    This memento mori sounds like an excellent reason to open a bottle.

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  3. What do asteroids have to do with trying to have sex with one of the Cheeky Girls?

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  4. Nice one, Demetrius; come to think of it, it's a hell of a way to go - vaporised at the bottom of a smoking crater...

    MW, it seems odd thse days to think that Opik was once a rather nerdy aspiring Liberal politician with an inherited asteroid obsession and a sensible meteorologist girlfriend; as an example of the corrupting influence of celebrity, his story takes some beating.

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  5. Wonder if he had both of them or just the one. Dolly Sisters spring to mind.

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  6. They do indeed, JH, though one mught argue that Lembit was less of a catch than the big cheese of Selfridges.

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  7. And then we have these!

    Keep watching the skies!

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