Linked Questions

30
votes
6answers
4k views

What is the smallest operational artificial satellite?

Miniaturisation has many advantages, and in recent times, nanosatellites, picosatellites, and femosatellite concepts have emerged. The Wikipedia article on miniaturised satellite has some pointers. ...
8
votes
4answers
242 views

How do cubesat owners first find out their cubesat's initial trajectory? How do they point antennas at it before official TLEs start to appear?

When cubesats are first deployed it can sometimes take several days before they start appearing in official TLE distributions, and even then if many were deployed it may take a lot more work to decide ...
9
votes
1answer
673 views

How does the SpaceBEEs' experimental passive radar reflector work?

My Question: What is the nature of the "experimental passive radar reflector developed by the U.S. Navy’s Space and Naval Warfare Systems Command"? How does it work, and why does it work for ...
4
votes
1answer
555 views

What would be a "big picture" understanding of how the orbits of Earth satellites are monitored?

In preparation for another question, I typed "keeping track of satellites in orbit" into a search engine, and found a website called keeptrack.space which has a ...
8
votes
1answer
267 views

Are the SpaceBEEs still "illegal" or did they eventually receive approval to operate?

This answer to Might ISRO's 2018-004 launch be at least a technical violation of the Outer Space Treaty by India? clarifies some of the actions taken against Swarm Technologies for launching some ...
3
votes
1answer
287 views

Are 1U cubesats sufficiently detectable to get at least minimally usefully predictive public TLEs, updated regularly?

Satellite radar cross-sections is a complex function of satellite structure, design, materials, instantaneous attitude, (radar) frequency, polarization, and if has moving parts, configuration, just to ...
2
votes
1answer
235 views

What can be done in future mass-cubesat deploys to make them "less irksome" to orbital space debris experts?

In the first group of questions below the block quotes, I've illustrated situations where a large number of cubesats are deployed at one launch (56 an 104 satellites) and it seemed to take quite a ...
5
votes
1answer
213 views

What checks are supposed to be carried out to prevent illegal satellite launches?

In January, the PSLV launch delivered 28 satellites to orbit, with 4 SpaceBee satellites among that number, despite them not having an FCC licence (due to size, visibility and tracking concerns) As ...
4
votes
1answer
119 views

How satellite orbital vacancies are determined?

Before a new satellite is launched, its desired orbital altitude, inclination is determined. Now with thousands of satellites already in orbit at different altitudes, how do we know if our desired ...
6
votes
0answers
60 views

Do deployments of multiple cubesats obey proposed guidelines such as 20 seconds or more between deployments at 5 m/s or faster?

This answer to What can be done in future mass-cubesat deploys to make them “less irksome” to orbital space debris experts? links to Space Traffic Safety: A New Self-Governance Approach for the ...
2
votes
2answers
12 views

Is there a way (working or in development) to track satellites in lunar orbit like we track objects in Earth Orbit?

I understand that Earth orbiting satellites are tracked using technologies such as radar, but due to the distance between the Earth and the Moon, they aren't really useful for Moon sats. Is the ...