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livestream of starman in tesla on yt right now
Posted on 2/7/18 at 5:01 pm
Posted on 2/7/18 at 5:01 pm
Pretty cool
5
Posted on 2/7/18 at 5:03 pm to L1C4
That's from yesterday
That Tesla is sleeping with the asteroids now
That Tesla is sleeping with the asteroids now
Posted on 2/7/18 at 5:13 pm to Pettifogger
I didn't flow closely. Where is the car currently?
Posted on 2/7/18 at 5:15 pm to Jake88
In outer space.
Posted on 2/7/18 at 5:17 pm to L1C4
It missed its orbit. I would imagine that it's not going to look so cool soon.
Posted on 2/7/18 at 5:29 pm to Jake88
quote:
I didn't flow closely. Where is the car currently?
I looked for a while earlier, but here's the fullest explanation I've found
quote:
The Tesla Roadster that launched Tuesday on the first test flight of SpaceX's powerful Falcon Heavy rocket is heading farther into space than expected.
The red car — along with a dummy in the driver's seat named "Starman" — were targeting an elliptical orbit around the sun that would, at times, get close to Mars. On Tuesday night, SpaceX Chief Executive Elon Musk tweeted that the vehicle's trajectory had "exceeded Mars orbit and kept going to the Asteroid Belt."
The car isn't there yet, though, and won't be for many months, at least. Musk's tweet means the car is on a trajectory to go into a much larger, egg-shaped orbit around the sun that will still cross Mars' orbit from time to time, but push out farther than initially anticipated, said Clifford V. Johnson, a professor in the physics and astronomy department at USC.
"Either way, they've shown they can get something to Mars or the vicinity of Mars, and that's great," he said of SpaceX. "They've demonstrated that they can get something that big off the surface of the Earth, into Earth orbit, recover most of the vehicle to make the whole thing really cheap … and then further extend the [payload's path] beyond Earth orbit toward Mars."
Was trying to find an estimate of how far it is from Earth at this point
Posted on 2/7/18 at 5:44 pm to Pettifogger
quote:Can't be that far. Isn't the moon about a 72 hour trip?
Was trying to find an estimate of how far it is from Earth at this point
quote:That would seem to be a major screw up everyone is looking past.
the car is on a trajectory to go into a much larger, egg-shaped orbit around the sun that will still cross Mars' orbit from time to time, but push out farther than initially anticipated
This post was edited on 2/7/18 at 5:46 pm
Posted on 2/7/18 at 5:45 pm to L1C4
WOW! Thanks for sharing this along with all the detail.
Kill yourself.
Kill yourself.
Posted on 2/7/18 at 6:00 pm to Pettifogger
quote:
Was trying to find an estimate of how far it is from Earth at this point
From what I've found, after the final burn to put it on its current trajectory, it was moving about 27000 mph relative to Earth. It was only a few thousand miles off the planet at that point, so for the purposes of this back of the napkin calculation, we'll ignore that due to the velocity it got boosted to. The final burn took place about 9:30P EST last night, so it's been traveling for about 21 or so hours. That should put it somewhere between 500 and 600,000 miles away.
Now, that number's REAL rough, as Earth's gravity started slowing it down again the instant the rocket cut off, and there are a lot of details about its trajectory that make how its speed relative to Earth and the direction it's heading relative to Earth continuously change, but it should be good for an order of magnitude sort of rough estimate.
This post was edited on 2/7/18 at 6:09 pm
Posted on 2/7/18 at 6:06 pm to L1C4
Thanks for the link, chode.
Posted on 2/7/18 at 6:16 pm to L1C4
quote:
Musk told reporters in a teleconference Monday he expects the Tesla to coast comfortably in space for hundreds of millions of years.
That isn't going to happen if it reaches the asteroid belt. Maybe the airbag will help, though.
Posted on 2/7/18 at 6:40 pm to Jake88
quote:
Can't be that far. Isn't the moon about a 72 hour trip?
It's almost certainly well past the moon's orbit by now. The moon takes about 72 hours if you want that to be about as far out as you want to go before you start falling back toward the Earth. They planned the moon missions to take that long so they were already moving pretty slow when they got there to minimize how much their rockets had to further slow them down to get into orbit around the moon. They could have gotten there faster but would have had to burn way more fuel to slow down once they got there which would mean a bigger rocket, which would mean more fuel and a bigger rocket and the tyranny of the rocket equation.
If you're going farther than the moon, though, you've got to be going faster when you leave. New Horizons was moving something like 37,000 mph when it left for Pluto, so it was past the moon's orbit in under 12 hours.
quote:
That would seem to be a major screw up everyone is looking past.
Eh, not necessarily. They delayed the launch for something like three hours, so by the time they lit the thing, the Earth and the launchpad had rotated 45 degrees from when the launch window opened. It's entirely possible that they planned their mission profile to get out to Mars' orbit if they launched early in the window but designed it so that if they launched later, they'd end up lobbing the Tesla farther out, but would still make it as far as they wanted. That way, they'd not have to try to correct on the fly. I'd love to know for sure, though.
This post was edited on 2/7/18 at 6:41 pm
Posted on 2/7/18 at 6:43 pm to Tigris
quote:
That isn't going to happen if it reaches the asteroid belt. Maybe the airbag will help, though.
Still a lot of empty space in the asteroid belt man. They’ve sent quite a few probes through it over the years.
It’s not like the one in Empire Strikes Back.
Posted on 2/7/18 at 6:45 pm to TigerstuckinMS
quote:
From what I've found, after the final burn to put it on its current trajectory, it was moving about 27000 mph relative to Earth. It was only a few thousand miles off the planet at that point, so for the purposes of this back of the napkin calculation, we'll ignore that due to the velocity it got boosted to. The final burn took place about 9:30P EST last night, so it's been traveling for about 21 or so hours. That should put it somewhere between 500 and 600,000 miles away.
Now, that number's REAL rough, as Earth's gravity started slowing it down again the instant the rocket cut off, and there are a lot of details about its trajectory that make how its speed relative to Earth and the direction it's heading relative to Earth continuously change, but it should be good for an order of magnitude sort of rough estimate
Awesome, thanks
Posted on 2/7/18 at 7:08 pm to elprez00
quote:
That isn't going to happen if it reaches the asteroid belt. Maybe the airbag will help, though.
Still a lot of empty space in the asteroid belt man. They’ve sent quite a few probes through it over the years.
Sure, I understand that. But I don't think surviving for "millions of years" is likely. Hell, the international space station has been hit by small meteors in a relatively short time in a much safer earth orbit.
And in a few hundred or thousand years somebody will probably grab it and put it up for auction anyway.
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