### Author Topic: Objects within a 100 day roundtrip from Earth  (Read 1814 times)

#### AegeanBlue

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##### Objects within a 100 day roundtrip from Earth
« on: 03/08/2016 03:37 AM »
I started a new thread because I could not see a relevant one open here. Currently the Orion is designed to sustain its crew for 21 days, while the Congressionally mandated Deep Space Habitat is designed for 60 days of crew use. Let's assume that we decide to combine the two and push the mission to 100 days roundtrip. Is there any body that an Orion/DSH stack could visit within a 100 day roundtrip around the end of the 2020's, i.e. after EM-2? Is there any website where we could calculate time and ΔV requirements for such a mission? I know that the Minor Planet Center keeps a list of near forthcoming close encounters here:

http://www.minorplanetcenter.net/iau/lists/CloseApp.html

but where could I find a website or some sort of resource to calculate orbital dynamics for a flyby and orbit insertion around an NEO that will last less than 100 days total?

#### NovaSilisko

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##### Re: Objects within a 100 day roundtrip from Earth
« Reply #1 on: 03/08/2016 04:00 AM »
I wonder if it would be possible to meet, say, Apophis before its flyby in 2029 or 2036 (2036 might be too far, depends on where it goes in 29), and then leave just before the flyby and enter the atmosphere at about the same time.
« Last Edit: 03/08/2016 04:06 AM by NovaSilisko »

#### ISP

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##### Re: Objects within a 100 day roundtrip from Earth
« Reply #2 on: 03/08/2016 04:28 AM »
http://trajbrowser.arc.nasa.gov/

Trajectory Browser is a pretty decent tool for calculating this, there are actually quite a few objects that fit the ~100 day round-trip criteria.
« Last Edit: 03/08/2016 04:29 AM by ISP »

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