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Questions tagged [asteroid]

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

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What precisely was the character of the non-gravitational acceleration of Oumuamua?

When exactly did Oumuamua accelerate, when did it begin, when did it end, was it uniform across that period, and at what vector did it occur? I've seen some vague references to it lasting 100 days, ...
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How to achieve escape velocity from Ceres?

If I am interested in a sample return mission to Ceres using a similar propulsion technology package to Dawn, what kinds of additional propulsion would be required to land and then return? ...
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What kinds of instruments do you need to detect whether liquid water/ice is on a planet?

Somewhat of a two-part question. Firstly I'm interested to know if it is expected that a planet/asteroid has water/ice on it, what kinds of scientific instruments you need to identify the presence and ...
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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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Could I claim a asteroid if I landed on it?

Could I claim a Asteroid if I landed on it? If so, could I have a nuclear reactor on it for a power generator?
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Is Mars more at risk than Earth for asteroid collisions?

When looking at topographical pictures of Mars it seems like there are craters far more frequently than here on Earth. This statement, of course, is just pure speculation on my part. However, it makes ...
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Examples of gamma ray or X-ray imaging of small planets, moons, or asteroids, or at least how to calculate intensity thereof?

Have any spatially resolved measurements of gamma rays or X-rays from medium and small solar system bodies been collected from space? These might be planets, moons, or asteroids for example, but ...
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If Oumuamua was alien space-junk, what would it look like, and would we be able tell?

I'm interested in our recent interstellar visitor 'Oumuamua. Whilst I'm happy to accept the official explanation of what it is, I'm curious about what state it would be in if it was actually alien ...
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Inspect an asteroid before mining?

If I were to send a mining machine in, for example, a Falcon Heavy, I would first have to inspect the asteroid before I could start mining, so I would really have to send 2 rockets. First to inspect ...
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What's next for Planetary Resources?

The company Planetary Resources had great success with their Arkyd-6 mission earlier this year and were recently purchased by a ConsenSys. I'm wondering if they have published any plans about future ...
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How was the standard of a potentially hazardous object (PHO) being determined?

I was going through an article about Bennu asteroid and OSIRIS-REx mission and done a quiz. There is an interesting question: What's a Potentially Hazardous Asteroid? a. One at least 500 feet ...
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How does the hopping mechanism of the Minerva II rovers work?

The Minerva II rovers deployed to Ryugu by Hayabusa 2 have gotten a lot of news coverage for their hopping method of locomotion. Is there public information on exactly how this works? I seem to recall ...
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How much asteroid can we divert from the Earth?

There are many movies with the Earth being saved by sending a bomb out blow up the asteroid. What realistically could we do to that degree today? Do we have interplanetary missiles? if so how much of ...
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Will asteroid 2015 YA have a collision with Venus in october 2018?

When you use the Small-Body Data Browser of JPL Solar System Dynamics and do the search for asteroid 2015 YA, and after that push the [ show orbit diagram ] button, you can see that on october 12, ...
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Can we remotely measure the age of `Oumuamua or Bee-Zed by measuring radioactive isotope ratios?

Radiometric dating such as radiocarbon dating is commonly used for measuring the age of rocks, including meteorites. This is normally an active in-situ measurement. But spectral differences between ...
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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 ...
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How could asteroid 2013 ND$_1$$_5$ become a moon of Venus with the aid of rocket engines?

Notice: Although this question is similar to this one, it is different because asteroid 2012 XE$_1$$_3$$_3$ has a transitional path between Venus's Lagrangian points L5 point and L3 point, whereas ...
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Could asteroid 2012 XE$_1$$_3$$_3$ become a moon of Venus with the aid of rocket engines?

2012 XE$_1$$_3$$_3$ is an asteroid, classified as near-Earth object of the Aten group that is a temporary co-orbital of Venus. It is following a transitional path between Venus's Lagrangian points L$...
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How much will Bennu rotate faster and faster with mirrors facing the Sun on its left side?

Several answers to the question "Why paint only one-half of Bennu" describe the Yarkovsky effect as an important force acting on the asteroid 101955 Bennu. But what about the radiation pressure of ...
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Could a Boring Company Excavation Tool be used to create a large circular chamber inside an asteroid?

I saw an awesome post by a user about 1g off-Earth habitats. Radiation protection is provided to humans when habitats have a lot of mass between habitation areas and sources of radiation. Long-term ...
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DLR Mascot asteroid lander's unusual “torque wheel-based” propulsion system

Soon the Japanese Hayabusa 2 mission will release the German "Mascot" Lander onto the surface of the asteroid. The small box shaped lander then impacts the surface and preforms science experiments. ...
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What does this paper say is wrong (quantitatively and procedurally) with WISE & NeoWISE asteroid data?

I don't have daily access to the journal Icarus so when I read the New York Times article Asteroids and Adversaries: Challenging What NASA Knows About Space Rocks; Two years ago, NASA dismissed and ...
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What is synthetic tracking, and why would a 35 cm Earth imager be 10-30x better than Pan-STARRS or LSST for interstellar asteroid discovery?

The ArXiv preprint Technical Note: Asteroid Detection Demonstration from SkySat-3 B612 Data using Synthetic Tracking is an interesting read! The abstract says: We report results from analyzing the ...
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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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Can we expect to find pure iron or only nickel-iron alloys in asteroids?

Relatively pure iron has more uses and potential value than nickel-iron alloys. Separating those nickel-iron alloys commonly found in meteorites and expected to be common in asteroids (Kamecite, ...
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Is it possible for an asteroid to be captured by earth in such a way that it has minimal relative velocity?

Is it possible for a metal (or dirt/ice) asteroid of 1km average diameter to enter the Earth-Moon system in such a way that the asteroid behaves as if it were dropped from a height instead of as a ...
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Can plant/tree seeds come from other planets carried by Asteroids? [closed]

I've read that some plant and tree seeds can be cryogenically preserved for years, if not decades. However, I've not read of anyone considering the following theory: Could it be possible that our ...
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When should a rocket be launched to reach a Near Earth Asteroid like 2001 US16?

Earth takes 365.25 days to complete its orbit around the Sun. Earth also travels at 67000 mph. Asteroid 2001 US16 (also known as 89136) takes 577 earth days to complete it's orbit around the Sun. To ...
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What class of near-earth asteroids would be most feasible for colonization? [closed]

There are four types of near-earth asteroids: Apollo class asteroids, with orbits that intersect Earth and semi-major axes larger than Earth's Aten class asteroids, with orbits that intersect Earth ...
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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 ...
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Why paint only one-half of Bennu?

The Gizmodo article Instead of Nuking an Asteroid Headed Toward Earth, We Could Just Splash It With Paint says: “Even just painting the surface a different color on one half would change the ...
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Asteroid Defense

Has Space X thought about landing on an asteroid, and deploying technology that can either redirect or disassemble an incoming asteroid to avoid or lesson the asteroids impact on earth? I read NASA's ...
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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 ...
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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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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 ...
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Clohessy - Wiltshere equations in electric propulsion

Further to my "asteroid chasing" question regarding the HCW equations (Clohessy - Wiltshire equations for use in Asteroid "chasing"), I was wondering if there was some transformation of ...
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Clohessy - Wiltshire equations for use in Asteroid “chasing”

So I'm actually a student studying this sorta thing, and an assignment I have is to chase/rendezvous with an asteroid. I've done my reading on the C-W equations (what little I could understand) and ...
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If the Tesla Roadster happened to crash into an asteroid, would the asteroid be damaged?

If the car has the luck to find a rock of more or less his mass, taking the mass and speed into account, can it make a considerable amount of damage in an asteroid?
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How satellites handle obstacles for short or long term missions

Do scientist consider small asteroid/stones/junk in space while sending satellites to orbit or for long range missions like for Mars? If yes, then how can they identify the trajectory and prepare ...
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How predictable is one asteroid's trajectory?

If one fictitious probe mission was to impact an asteroid fast enough to destroy it using its kinetic energy, could the asteroid's trajectory be predicted accurately enough (plumes or emanations or ...
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Can we destroy an asteroid by spinning it?

In a YouTube video Colonizing the Solar System, part 2: the Outer Solar System, Isaac Arthur who is a YouTuber and also a physicist says something like "you don't spin an asteroid for artificial ...
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Using asteroids as propellent source

if we could capture an asteroid or meteor, can we use it as a vehicle for space travel? From what I understand, propulsion is a result of mass flow, so we could use a rail gun configuration to propel ...
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Why are low-albedo asteroids thought to be more water-rich?

In this talk, J. L. Galache mentions that asteroid miners are looking for NEAs with: low delta-v (so the asteroid is easy to get to/from from Earth) low synodic period (for frequent launch/return-...
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How can a planet “catch” an asteroid?

When an asteroid enters the sphere of influence of a planet and the periapsis is above the atmosphere (if it wasn't and the object doesn't leave the atmosphere at escape velocity, the object would ...
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Yikes! How did we miss 2017 VL2?

The Tech Times article NASA Fails To Spot Whale-Sized Asteroid That Skimmed Past Earth says that Asteroid 2017 VL2 passed the Earth within about 120,000 km, or about 1/3 the distance of the Moon on ...
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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: ...
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Can an asteroid enter Earth orbit?

Can an asteroid pass near Earth at a right velocity and angle to bend its trajectory and make an orbit? Note: I know about objects such as 2016 HO3, which are quasi-satellites of Earth due to ...
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How effective are solar sails to deflect an asteroid?

This answer states that solar sails may deflect asteroids. I understand that the goal is to deflect an incoming asteroid enough to avoid collision. I assume painting the asteroid white may also ...
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Timing shadows from the Kuiper belt! Any news? Did it work?

update 24-Jun-2017: SOFIA Arrives in New Zealand to Observe Southern Skies There are plans to fly SOFIA through another predicted occultation path on July 17. SOFIA is a huge (2.5 meter dia.) infrared ...
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Theoretical Asteroid Composition and the economy

This is a question that I sort of view as an intersection between economics/science/space, completely hypothetical in nature, so I'm not sure if this is the right forum for it but, here goes: I read ...