Posted on 11/24/2017 6:01:48 AM PST by BenLurkin
Whew!
Phaethon approached to 0.120895 AU (18,085,600 km; 11,237,900 mi) of Earth on December 10, 2007.[1] On December 16, 2017, it will pass 0.06893 AU (10,312,000 km; 6,407,000 mi) from Earth. Then, on December 14, 2093, it will pass 0.0198 AU (2,960,000 km; 1,840,000 mi) from Earth.[1][11]
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—Wikipedia
That’s hurt if it it.
Indeed.
They use AU because using LD would make the story a lot less sensational.
It’s like 15 LD so it’s not even CLOSE.
This thing has a weird orbit. From the outer reaches of the system to inside the orbit of Mercury.
Seems like it’s honing in on a collision with Earth over time. Wonder if there are any realistic factors in nature that could nudge it one way or the other.
Lucifer’s Hammer
by Larry Niven Jerry Pournelle
“a massive comet breaks apart and bombards the Earth, with catastrophic results: worldwide earthquakes, volcanic eruptions, thousand-foot tidal waves and seemingly endless rain… With civilization in ruins, individuals band together to survive and to build a new society. “A MEGATON OF SUSPENSEFUL EXCITEMENT ... which should keep readers going non-stop, cover to cover” - Booklist.
Besides getting to look at the Geminids, I am hoping to catch a glimpse of the asteroid as is passes.
It’s Niribu!
Skim? So, it’s going to take the top layer of Earth off?
Sure there are: a near-miss with any of the planets, asteroids or comets. But, especially Saturn and Jupiter, where the misses don't have to be especially near in order to nudge the orbit significantly.
Note, too, that although the orbits of the major planets and many asteroids are well-known (and, therefore, predictable well into the future), there remain as-yet undiscovered asteroids, plutoids and comets, and a near-miss with one of those could go both unpredicted and unnoticed.
Also, the posted article says “within 2 million miles of Earth’s orbit” when really, this December, it’s only coming within 6 million miles of Earth.
There’s a big difference between coming close to Earth’s orbit and coming close to Earth.
For me the takeaway is that if NASA classifies this object as a “potential hazard” it means there aren’t very many hazards out there, at least not that we now know about.
“It’s about half the size of Chicxulub, the rock which wiped out the dinosaurs,..”
Seriously?? Just spit this out as fact? And even to give it a name?
Come on...
YAWN
I wouldn’t call that close considering the Earth’s diameter is 8000 miles.
Well, that’s what the dinosaurs called it.
Big rocks passing close to Earth are nature’s way of asking, “Hey, how’s your space program doing?”
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