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@planet4589 | |||||
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Corrected orbital data for the Roadster: 0.99 x 1.71 AU x 1.1 deg
C3 = 12.0, passes orbit of Mars Jul 2018, aphelion November
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Robert Fritzinger
@RAFritz7
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Feb 7 |
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Really not even close to the asteroid belt. It will make it just past Mars orbit.....right??
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Jonathan McDowell
@planet4589
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Feb 7 |
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Correct
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Ben Pearson
@kd7uiy
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Feb 7 |
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So these numbers are assuming that the C3=12 was correct? Either the C3 is correct, or the distance from the sun is correct, but not both?
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Scott Sutherland (🌦️🌩️🌀🌙🚀🛰️)
@ScottWx_TWN
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Feb 7 |
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So, it's more like this corrected plot? pic.twitter.com/qYeFgXNAxT
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Jonathan McDowell
@planet4589
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Feb 7 |
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We now know that the C3=12 was correct and the 'aphelion in the belt at 2.6 AU' was a mistake.
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Jonathan McDowell
@planet4589
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Feb 7 |
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More or less
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Jim B
@httprover
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Feb 7 |
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Was the Earth at the perihelion of the orbit at the time the Roadster left the Earth's orbit? Would the Earth's heliocentric longitude give us a line of apsides?
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Jonathan McDowell
@planet4589
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Feb 7 |
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Yes. I have (approximately) i = 1.10, node = 316.78, AOP = 179.33; M = 3.82 at Feb 11 1800 UTC
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Sebastián Arboleda
@katzenschaeler
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Feb 7 |
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Good lord, that's a massive delta-V. Doesn't the minimum energy orbit take about 2 years?
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Jonathan McDowell
@planet4589
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Feb 7 |
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That's to pass Mars slowly . You can get there much quicker if you don't mind whizzing past at high speed, with the same initial energy as if you were doing the slow route
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Sebastián Arboleda
@katzenschaeler
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Feb 7 |
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Do you know if the plan is to retrofire to leave Starman in Mars orbit?
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Jonathan McDowell
@planet4589
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Feb 7 |
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It's not going anywhere near Mars. And it's dead now, no ability to manuever
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Gerrit Immink
@gerrit_immink
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Feb 7 |
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Do you have any idea of how close roadster will get to mars on this first orbit/when?
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Jonathan McDowell
@planet4589
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Feb 7 |
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About 100 million km, not close at all
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I am
@p3rfact
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Feb 8 |
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Am Inright in saying there is no equipment on the Roadster that’s will send us any type of data back and it’s so small, our telescopes or radar etc can’t track it? It’s just theoretical information now, right? Will Mars orbiter be able to see or detect it when it passes by Mars?
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Dhruva Malekar
@DhruvaMalekar
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Feb 8 |
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I want to understand the calculation a lot better ...where should I start....as in what is C3?? And what formula is used etc..
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Joseph Shuster Sr
@iamhondo
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Feb 8 |
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"...crosses the orbits of Earth..." According to what I've seen it intersects Earth's orbit. To cross (inside) Earth's orbit, they'd need to slow down a bit (most efficiently at aphelion).
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Dave Faubert
@res_canadensis
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Feb 8 |
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You know a lot, so I have a question: Musk advertised the car as being on a Mars-orbit trajectory. After the final burn. he bragged that it was going past that. Isn't this cause for concern? If Cassini went past Saturn no one would be bragging.
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Jonathan McDowell
@planet4589
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Feb 8 |
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He was speaking loosely, it was never targeted precisely for Mars. And the going past that brag turned out to be a mistake, it is in fact going just a smidge past Mars orbit
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