Linked Questions

31 votes
2 answers
4k views

Which LEO satellite lost over 30 km of altitude in the geomagnetic storm of 13-14 March 1989?

This answer includes the following information: During the great geomagnetic storm of 13-14 March 1989, tracking of thousands of space objects was lost and it took North American Defense Command (...
uhoh's user avatar
  • 151k
48 votes
1 answer
41k views

How often does ISS require re-boosting to higher orbit?

I know that ISS, being in low Earth orbit, requires regular boosts. But I can't seem to find information on how often does this happen. Is it done during each resupply mission, only during some of ...
Viniter's user avatar
  • 695
8 votes
3 answers
3k views

What is the density of the earth's atmosphere at an altitude of four hundred kilometers?

What is the density of the earth's atmosphere at an altitude of four hundred kilometers? I want to use it to calculate the drag on something in orbit near the ISS. The Jacchia Reference Atmosphere is ...
Matthew Christopher Bartsh's user avatar
15 votes
2 answers
8k views

What is the ISS drag?

ISS constantly loses altitude to air drag and other forces (tidal, electromagnetic). While finding that rate in the sources isn't that hard, with orbital mechanics of altitude loss actually increasing ...
SF.'s user avatar
  • 56k
13 votes
2 answers
2k views

How do orbital boosts affect the structural integrity of the ISS?

I've become curious of this question since my time on KSP, and searches have not rendered much. In the simulator, building large stations even without the micro atmosphere being simulated, can cause ...
IT Bear's user avatar
  • 1,199
10 votes
1 answer
2k views

This ISS trash deployment looks more like 2 feet than 2 inches per second, was it too fast or are these articles incorrect?

Digital Trends' Watch a NASA astronaut jettison part of the ISS into space which was linked in says: Writing in Air & Space last year about the process of jettisoning objects, veteran NASA ...
uhoh's user avatar
  • 151k
13 votes
3 answers
784 views

How steady is the atmospheric drag force experienced by the ISS?

Suppose one wanted to modulate the power of a hypothetical, powerful ion thruster on the ISS to continuously compensate the atmospheric drag force in order to achieve near-perfect free-fall conditions ...
uhoh's user avatar
  • 151k
15 votes
1 answer
689 views

How precisely do we know mass of the ISS?

Everyone knows that in space, every gram counts. Knowing how much mass an orbital object has is necessary for precise motion calculations. So how precisely do we know the mass of ISS? I'm sure we can ...
Euphoric's user avatar
  • 249
10 votes
2 answers
856 views

Does any site track the mass of the ISS?

Watching the daily ISS live broadcast from NASA the PRO mentioned the specific mass of the ISS complex (today) and what it would be when the Soyuz leaves shortly. One can find out the mass of each ...
Brian Tompsett - 汤莱恩's user avatar
11 votes
1 answer
1k views

What is the orbital boost acceleration of the ISS?

How much acceleration does the International Space Station experience during its orbital adjustment boosts? How much thrust and for how long? Bonus question: what is the highest acceleration that the ...
Nelson Cunnington's user avatar
10 votes
2 answers
508 views

Garbage powered reboosting module for low Earth orbiting space stations

Instead of dumping massive garbage packs once in a while, using a robotic arm, could some sort of garbage canon eject the same mass in small pieces, at higher velocity, so that it contributes to ...
user avatar
10 votes
1 answer
1k views

How are the orientations of the ISS' eight independent solar arrays optimized?

I've noticed that in various photos and videos the orientation of the ISS' eight independent solar arrays are often moving, and usually some are different than others. 0th-order naive thinking would ...
uhoh's user avatar
  • 151k
6 votes
3 answers
450 views

How much of a drag is it, orbiting the Earth in a space suit?

An astronaut in a spacesuit travels around the Earth at the same altitude as the ISS. Let's say the astronaut leads the ISS by 1000 meters along the same orbit. After one orbit, how much velocity has ...
uhoh's user avatar
  • 151k
1 vote
1 answer
126 views

What are the limitations to using this "trick" to quantitatively relate altitude changes (via their speed) with applied forces that cause them?

In this comment I used a "trick" to double check a calculation in the post above it. Using the vis-viva equation I first determined that if the ISS lost 10 meters of altitude in 86400 ...
uhoh's user avatar
  • 151k
5 votes
0 answers
98 views

Which LEO satellites have publicly available accurate position information? [duplicate]

I am working on a orbit propagation project and need accurate position information of LEO satellites. I have until now used Sentinel 3A/3B (~800 km altitude), whose ECEF coordinates I can get with a 1 ...
Frederik's user avatar

15 30 50 per page