With a Falcon Heavy rocket due to be launched and no important mission for it planned (other than car delivery to Mars), would it be possible to grab the opportunity and aim to catch up with , film and gather as much information on the Oumuamua, inter-stellar asteroid that recently passed Earth.It is probably just a lump of rock but as its 1:10 shape and high rotation rate make it appear an interesting object, apart from it origin probably being from another star.There are probably no other rockets planned to be launched soon that could undertake this task.I also feel that we should have probes ready to be launched at short notice , if an event like this occurs again.
And having expensive probes sitting around in storage, possibly for decades or even centuries, doesn't make any sense. For now we can make do with our "eyes in the skies" such as Hubble, Spitzer and other orbiting observatories, as well as many execellent ground-based observatories.
Quote from: woods170 on 12/15/2017 07:04 amAnd having expensive probes sitting around in storage, possibly for decades or even centuries, doesn't make any sense. For now we can make do with our "eyes in the skies" such as Hubble, Spitzer and other orbiting observatories, as well as many execellent ground-based observatories.When LSST comes online, we should detect about 1 a year. This is derived from how long Pan-STARRS took to find 'Oumuamua so the error bars are large. But exceptionally unlikely to be decades. Even before LSST, we might start finding more, now we know they really exist and start looking in ernest e.g. staring at the solar apexSo once we have a better idea of frequency and the velocity distribution, a probe isn't such a silly idea. After all, these objects are by far the easiest bulk non-solar material we could study. --- Tony
One potential mission architecture is to make use of SpaceX’s Big Falcon Rocket (BFR) and their in-space refueling technique with a launch date in 2025. To achieve the required hyperbolic excess (at least 30 km/s) a Jupiter flyby combined with a close solar flyby (down to 3 solar radii), nicknamed “solar fryby” is envisioned.
When LSST comes online, we should detect about 1 a year. This is derived from how long Pan-STARRS took to find 'Oumuamua so the error bars are large. But exceptionally unlikely to be decades.
I'm sure FH could easily launch a payload and/or kicker stage capable of catching up using either chemical or electric propulsion...
Quote from: Req on 12/15/2017 09:39 amI'm sure FH could easily launch a payload and/or kicker stage capable of catching up using either chemical or electric propulsion...I don't think so. I doubt that even FH could launch enough chemical fuel to reach the required speed and electric propulsion as in SOLAR electric propulsion is not an option, because 'Oumuamua is already too far out.
I also feel that we should have probes ready to be launched at short notice , if an event like this occurs again.
Quote from: colbourne on 12/15/2017 05:09 amI also feel that we should have probes ready to be launched at short notice , if an event like this occurs again.Probes are not inert things that can just be used at any time. As an example, even electronic components deteriorate with time, especially capacitors.Not to mention that this is not Star Trek and probes must be made for a specific mission. As an example, power requirements differ a lot between missions.
Quote from: IRobot on 12/15/2017 11:15 amQuote from: colbourne on 12/15/2017 05:09 amI also feel that we should have probes ready to be launched at short notice , if an event like this occurs again.Probes are not inert things that can just be used at any time. As an example, even electronic components deteriorate with time, especially capacitors.Not to mention that this is not Star Trek and probes must be made for a specific mission. As an example, power requirements differ a lot between missions.We just learned that the soon to be launched GRACE-FO satellites are the flight spares of the original mission from 2002. That means they spent at least 15 years in storage.
Quote from: jpo234 on 12/15/2017 11:34 amQuote from: IRobot on 12/15/2017 11:15 amQuote from: colbourne on 12/15/2017 05:09 amI also feel that we should have probes ready to be launched at short notice , if an event like this occurs again.Probes are not inert things that can just be used at any time. As an example, even electronic components deteriorate with time, especially capacitors.Not to mention that this is not Star Trek and probes must be made for a specific mission. As an example, power requirements differ a lot between missions.We just learned that the soon to be launched GRACE-FO satellites are the flight spares of the original mission from 2002. That means they spent at least 15 years in storage.Flight spares is very different from a complete spacecraft.
This is bordering on sillyEven if a probe was ready an interplanetary trajectory requires a precisely timed launch. That is incompatible with this being the first launch of the FH.In science fiction books the first flights make great missions. In life, not. Even if FH could launch a probe to this target, it would need nuclear power, an RTG. There are none available, they have never been given to commercial entities, and the Heavy isn’t rated to launch them and couldn’t be for many launches. Only the Atlas V is, to my knowledge. Plus the speed required is excessive. New Horizons, the fastest direct launch ever, did not achieve that velocity. And it used the Centaur, with LOX-LH2, which is much better suited for interplanetary velocities. And the time to launch would have been last year. If all the impossible conditions were met, launching now and catching up in less than a decade would result in a high speed flyby without more propulsion magic. And it goes on and on. It’s a cute coincidence, the first interstellar asteroid flying by the first Heavy being assembled. But that’s as close as they get.
Quote from: IRobot on 12/15/2017 11:38 amQuote from: jpo234 on 12/15/2017 11:34 amQuote from: IRobot on 12/15/2017 11:15 amQuote from: colbourne on 12/15/2017 05:09 amI also feel that we should have probes ready to be launched at short notice , if an event like this occurs again.Probes are not inert things that can just be used at any time. As an example, even electronic components deteriorate with time, especially capacitors.Not to mention that this is not Star Trek and probes must be made for a specific mission. As an example, power requirements differ a lot between missions.We just learned that the soon to be launched GRACE-FO satellites are the flight spares of the original mission from 2002. That means they spent at least 15 years in storage.Flight spares is very different from a complete spacecraft.How is a probe different from a satellite (except for the trajectory)?
Quote from: jpo234 on 12/15/2017 11:34 amWe just learned that the soon to be launched GRACE-FO satellites are the flight spares of the original mission from 2002. That means they spent at least 15 years in storage.That was the just the structure. They were gutted and rebuilt. Also, they were for the same mission.
We just learned that the soon to be launched GRACE-FO satellites are the flight spares of the original mission from 2002. That means they spent at least 15 years in storage.
Quote from: jpo234 on 12/15/2017 11:40 amQuote from: IRobot on 12/15/2017 11:38 amQuote from: jpo234 on 12/15/2017 11:34 amQuote from: IRobot on 12/15/2017 11:15 amQuote from: colbourne on 12/15/2017 05:09 amI also feel that we should have probes ready to be launched at short notice , if an event like this occurs again.Probes are not inert things that can just be used at any time. As an example, even electronic components deteriorate with time, especially capacitors.Not to mention that this is not Star Trek and probes must be made for a specific mission. As an example, power requirements differ a lot between missions.We just learned that the soon to be launched GRACE-FO satellites are the flight spares of the original mission from 2002. That means they spent at least 15 years in storage.Flight spares is very different from a complete spacecraft.How is a probe different from a satellite (except for the trajectory)?GNC, thermal control, attitude control, etc. Earth satellites take advantage of being in close proximity to earth