Questions tagged [asteroid]

Questions about asteroids, bodies in the solar system smaller then planets which orbit the sun.

22 questions with no upvoted or accepted answers
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6
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Could Breakthrough Starshot be used to deflect asteroids and comets?

Would Breakthrough Starshot be able to deflect an asteroid or comet? I have seen thoughts about using the lasers that would launch Breakthrough Starshot to deflect asteroids or comets: https://www....
6
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1answer
479 views

What Platinum minerals are expected to be found in Asteroids?

High quantities and values have been claimed for the Platinum and other high value metals in Asteroids - prompting (or perhaps in order to prompt) interest in mining them. Is this high value metal ...
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156 views

Small-bodies landing strategies

Looking at past landing missions on small bodies such as Eros, Itokawa and 67P I found different landing strategies Eros: NEAR Shoemaker probe performed 4 impulsive pre-planned open-loop maneuvers to ...
5
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0answers
130 views

How fast could the rotation of asteroids and planetoids be sped up before they disintegrate?

I am currently reading the The Expanse novel series. In the books there are several space colonies that are basically asteroids or planetoids (in particular Eros and Ceres) that have been spun up to ...
5
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0answers
629 views

Method to estimate asteroid density based on spectral type

It's easy to get spectral information about asteroids, from the JPL database for instance. They often have an albedo estimation, but almost never have a mass estimate (if you have albedo and mass, ...
4
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0answers
43 views

How can we be certain that Ryugu is a remnant of the material that did not form planets?

Its mentioned here https://www.theguardian.com/science/2019/feb/22/japans-hayabusa-2-successfully-touches-down-on-ryugu-asteroid that Ryugu is a part of the Solar System material that did not get ...
4
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0answers
472 views

Sources for SPICE Kernel (SPK) files for asteroids

Besides the official source for SPK files (ftp://ssd.jpl.nasa.gov/pub/eph ...) is there a place where people upload kernels for the smaller bodies in the solar system? I was looking for the Jupiter ...
4
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0answers
503 views

How does the entry angle of a meteor affect the straight line distance traveled?

I'm trying to help a student solve the following problem: A 15 meter in diameter asteroid with a mass of approximately 10,000 metric tons going 20 km/s. The entry and time for disintegration was 28 ...
3
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0answers
80 views

Why is the Southern Hemisphere of Mars is heavily struck by asteroids while the northern part is relatively smooth?

The northern hemisphere of Mars is smooth with flats lands but areas particularly below the Tharsis rise is heavily cratered, also Hellas basin, one of the largest impact craters is located in the ...
3
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0answers
69 views

Minimum delta V required to return a piece of metallic asteroid 16 Psyche to Earth?

Suppose somebody sent a rover to Psyche 16 and found massive concentrated deposits of platinum-group metals near the surface, and turned it into a 10 ton sphere of platinum/iridium/osmium/gold alloy ...
3
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0answers
80 views

Atmospheric entry of asteroid mining products

This is a more general question than How to get processed asteroid metals back to Earth in a safe manner That question was actually a quick check to see if a particular idea was plausible. Instead, ...
3
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0answers
69 views

Can we use magnetic devices to anchor to asteroids?

One of the challenges about missions to asteroids is staying attached to them when you land. Many asteroids are described as nickel/iron, and we know that both nickel and iron have magnetic ...
2
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0answers
91 views

What programs simulate the orbit of an asteroid over long periods of time?

I am trying to simulate the orbit of an asteroid over a long period of time in order to see the change in the orbit due to a constant force applied to the asteroid. Initially, I used GMAT to simulate ...
2
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0answers
168 views

Separating fact from fiction, how to get from this radar image to this GIF?

The NBC News article Mile-wide asteroid and its tiny moon to zoom past Earth this weekend; Dubbed 1999 KW4, the "binary" space rock will skim past our planet harmlessly at a distance of 3 million ...
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135 views

Trojan Asteroids, are they Beneficial or Potentially Dangerous?

I know that Jupiter has a bunch of trailing asteroids surrounding it dubbed "Trojans". Due to its massive gravitational pull Jupiter is likely a co-creator of Earth in many ways, diverting asteroids ...
2
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81 views

Asteroid Catalog

Where can one find asteroids or comets that contain water ice suitable for a human mission. Perhaps there is comprehensive catalog of small bodies that can be searched for characteristics such as: ...
2
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0answers
80 views

Energy use of Asteroid Redirect Robotic Mission (ARRM)?

In the ARRM feasibility Study Table 4, parameters of four different options (three different launchers and different trajectories) are gathered. What would be the total energy use of a mission like ...
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50 views

are there public ideas/concepts for space mining machines?

If a company were to send a rocket into space they would need some kind of mining machine on board to mine on, for example, an asteroid. I was wondering if a company already has a good idea for a ...
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30 views

If I know the masses, positions, and velocities of two objects, how do I calculate their trajectories under gravity?

I was thinking about the effect of a near-miss with an asteroid upon the orbit of the earth around the Sun. My goal is to figure out a formula I could use for a visualization I'd like to build to get ...
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46 views

What is the force of asteroids that hit Mars?

Below is a link to an article I was reading (Keeping in mind it was difficult for me to find any other articles of the kind) that talks about how often asteroids hit Mars. Unfortunately, it is very ...
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114 views

Are there clusters of small asteroids in the Kuiper or asteroid belt which could threaten the Earth?

I watched an episode of Curious Droid talking about the types of impacts of asteroids the size of Near Earth Objects. Are there clusters of small asteroids which are gravitationally bound together (or ...
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164 views

Can an ion drive attached to an asteroid move it into another orbit if given enough power?

After watching one of the videos from Curious Droid on Youtube talking about asteroid deflection and strikes I had an idea. Ion thrusters provide bits of mass velocities at the needed Isp (5-6 km/s ...