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Questions regarding the mechanics or attributes of objects falling 'around' other objects, thereby orbiting them.

8 votes
1 answer
751 views

Why is Nodal precession affected by the rotational period of the planet?

I understand that the oblateness of the sphere with an equatorial bulge induces a torque on the orbit of a satellite, which causes it to precess. …
karthikeyan's user avatar
  • 4,489
6 votes
1 answer
850 views

Why are 22N and 440N liquid engines quite common?

the 22N and 440N engine among the Monopropellant and Bipropellant engines The GOES handbook on Propulsion subsystem mentions a similar 490N apogee thruster(which is close to 440N) and 22N attitude and orbit … The subsystem consists of one 490-N (110-lb) apogee thruster and twelve 22-N (5-lb) attitude and orbit control thrusters, using liquid bipropellants There is an ESA requirement document precisely …
karthikeyan's user avatar
  • 4,489
4 votes
2 answers
129 views

How close will the cubesats be when numerous of them are launched simultaneously?

Checking the onboard video of PSLV C43 gives a feel like the CubeSats are released in very proximity. Does this mean that these CubeSats will be orbiting in such very close proximity through out the …
karthikeyan's user avatar
  • 4,489
4 votes
1 answer
1k views

Is it possible to capture geostationary satellites with DSLR?

DSLR is to be mounted on a tripod and pointed at sky with a zoom lens. Would a sufficiently long duration of exposure reveal these non-moving satellites as bright "stars" amongst the streaks caused b …
karthikeyan's user avatar
  • 4,489