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2003 SD220: Asteroid to flyby Earth on Christmas Eve in first of five encounters
www.ibtimes.co.uk ^ | December 17, 2015 12:13 GMT | By Hannah Osborne

Posted on 12/17/2015 12:46:11 PM PST by Red Badger

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1 posted on 12/17/2015 12:46:11 PM PST by Red Badger
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To: SunkenCiv

PinG!..........................


2 posted on 12/17/2015 12:46:44 PM PST by Red Badger (READ MY LIPS: NO MORE BUSHES!...............)
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To: Red Badger

Initially scientists had thought it measured around 1.3km in diameter, but now Nasa has said it is more likely to be 0.7km.

This suggests it measures around 1.3km in diameter.

Um, now I AM confused.


3 posted on 12/17/2015 12:49:37 PM PST by tet68 ( " We would not die in that man's company, that fears his fellowship to die with us...." Henry V.)
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To: Red Badger

How close will it be in 2021?

Or is that asking “the wrong question”? (Cue spooky music...)


4 posted on 12/17/2015 12:49:51 PM PST by FourtySeven (47)
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To: tet68

Yeah I saw that. Apparently they don’t trust NASA figures in the UK............I don’t blame them...................


5 posted on 12/17/2015 12:50:59 PM PST by Red Badger (READ MY LIPS: NO MORE BUSHES!...............)
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To: FourtySeven

You might not wanna know......................


6 posted on 12/17/2015 12:51:21 PM PST by Red Badger (READ MY LIPS: NO MORE BUSHES!...............)
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To: Red Badger

I’m preparing my underground bunker at this very moment.


7 posted on 12/17/2015 12:51:46 PM PST by ETL (Ted Cruz 2016!! -- For a better, safer America)
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To: tet68

I saw that too. I guess it means that the writer believes the scientists and not NASA!


8 posted on 12/17/2015 12:52:09 PM PST by Brilliant
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To: ETL

Read Robert Heinlein’s “Farnham’s Freehold”. It has everything you need to know...........................


9 posted on 12/17/2015 12:53:42 PM PST by Red Badger (READ MY LIPS: NO MORE BUSHES!...............)
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To: tet68
Initially scientists had thought it measured around 1.3km in diameter, but now Nasa has said it is more likely to be 0.7km.

This suggests it measures around 1.3km in diameter.

Um, now I AM confused.

Wouldn't be the first time NASA got confused when translating back and forth between metric and English units.

10 posted on 12/17/2015 12:54:50 PM PST by Yo-Yo (Is the /sarc tag really necessary?)
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To: FourtySeven

They cannot really project its orbit that far in advance due to the Yarkovsky effect..........................

The Yarkovsky effect is a force acting on a rotating body in space caused by the anisotropic emission of thermal photons, which carry momentum. It is usually considered in relation to meteoroids or small asteroids (about 10 cm to 10 km in diameter), as its influence is most significant for these bodies.


11 posted on 12/17/2015 12:55:22 PM PST by Red Badger (READ MY LIPS: NO MORE BUSHES!...............)
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To: Red Badger
Initially scientists had thought it measured around 1.3km in diameter, but now Nasa has said it is more likely to be 0.7km. This suggests it measures around 1.3km in diameter.

Initially scientists had thought the earth was cooling, but now Nasa has said it is more likely to be warming. This suggests it is in fact cooling.

12 posted on 12/17/2015 12:57:05 PM PST by LambSlave
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To: tet68

Should the second ‘diameter’ be ‘circumference’?


13 posted on 12/17/2015 12:57:49 PM PST by who_would_fardels_bear
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To: Red Badger

“Initially scientists had thought it measured around 1.3km in diameter, but now Nasa has said it is more likely to be 0.7km.

This suggests it measures around 1.3km in diameter.”

The juxtaposition of these two statements makes it seem like, whatever NASA says, the opposite is probably true.


14 posted on 12/17/2015 1:05:21 PM PST by Boogieman
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To: FourtySeven

Will it get close enough that I won’t need to bother with a haircut?


15 posted on 12/17/2015 1:06:08 PM PST by Boogieman
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To: FourtySeven
How close will it be in 2021?

1.36 AU, or 1.36 x 92.5 million miles = 125 million miles

http://mel.ess.ucla.edu/radarwiki/index.php/FutureTargetsJDG20100601

16 posted on 12/17/2015 1:15:07 PM PST by ETL (Ted Cruz 2016!! -- For a better, safer America)
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To: Red Badger

Gives a whole new meaning of getting nothing but rocks in the Christmas stocking.


17 posted on 12/17/2015 1:15:37 PM PST by American Constitutionalist (Trump is the pawn and creation of the Media and Political Establishment)
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To: FourtySeven

Hold on. I’m not sure if that 125 million miles in 2021 is correct. According to that chart I linked to, it’s at that same exact distance every time it makes a “close approach”, including this recent one (Dec 2015) where the posted article says it’ll come to within 6.7 million miles. So that number I provided obviously can’t be correct.


18 posted on 12/17/2015 1:24:14 PM PST by ETL (Ted Cruz 2016!! -- For a better, safer America)
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To: Brilliant

I’m working on my backyard Drone Blind.


19 posted on 12/17/2015 1:25:49 PM PST by Paladin2 (my non-desktop devices are no longer allowed to try to fix speling and punctuation, nor my gran-mah.)
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To: Red Badger
They cannot really project its orbit that far in advance due to the Yarkovsky effect..........................

The Yarkovsky effect is a force acting on a rotating body in space caused by the anisotropic emission of thermal photons, which carry momentum. It is usually considered in relation to meteoroids or small asteroids (about 10 cm to 10 km in diameter), as its influence is most significant for these bodies.

IOW, they don't have a f'ing clue. :>)

20 posted on 12/17/2015 1:40:56 PM PST by Ancesthntr ("The right to buy weapons is the right to be free." A. E. van Vogt)
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