Why is the ISS at a 51.6 degree orbital inclination?

  • Context: Undergrad 
  • Thread starter Thread starter Jonathan Scott
  • Start date Start date
  • Tags Tags
    Space
Click For Summary
SUMMARY

The International Space Station (ISS) orbits at a 51.6-degree inclination primarily to minimize risks associated with rocket failures during ascent. This inclination allows launches from Baikonur, Kazakhstan, which is situated at approximately 46 degrees latitude, to avoid flying over populated areas in neighboring countries. The recent incident involving the Long March 11 rocket, which had a sun-synchronous orbit of about 98 degrees inclination, highlights the potential dangers of launching in directions that could lead to debris falling over inhabited regions.

PREREQUISITES
  • Understanding of orbital mechanics and inclinations
  • Familiarity with rocket launch trajectories
  • Knowledge of the geographical coordinates of launch sites
  • Awareness of space debris and its implications
NEXT STEPS
  • Research the implications of sun-synchronous orbits in satellite deployment
  • Learn about the safety protocols for rocket launches from Baikonur
  • Explore the design and engineering of the Long March 11 rocket
  • Investigate international regulations regarding space debris management
USEFUL FOR

Aerospace engineers, space policy analysts, and anyone interested in the safety and logistics of space launches and orbital mechanics.

Jonathan Scott
Gold Member
Messages
2,346
Reaction score
1,192
A big chunk of space hardware has fallen harmlessly in the north of Myanmar:
http://www.bbc.co.uk/news/world-asia-37946718

From what it looks like, I'd say it's the remains of the second stage of the Long March 11 which China launched that day. The orbit was sun-synchronous and was probably around 98 degrees inclination, so it would be heading about 8 degrees West of South from the Jiuquan Launch Center, which would take it over Myanmar on the way up. Seems a bit careless to launch in a direction which will drop hardware on an inhabited area, especially in another country.

Edit: After a bit of Googling, found more pictures and a somewhat weirdly translated report: http://www.bestchinanews.com/Military/4038.html
 
  • Like
Likes   Reactions: mister mishka, mheslep and p1l0t
Astronomy news on Phys.org
This sounds as if I should check this website here, that has been linked by a user some weeks ago, far more often.
 
Jonathan Scott said:
Seems a bit careless to launch in a direction which will drop hardware on an inhabited area, especially in another country.
Interesting correlation here, China figures into it.
https://www.quora.com/Why-is-the-ISS-at-51-6-degrees-orbital-inclination

"Now, as to why specifically 51.6 degrees. This seems a little weird, at first, because we know the Russians launch from Baikonur. But if we look up Baikonur on a map, we see its latititude is at about 46 degrees.

But, sometimes rockets fail on ascent. And having a neighbor that could see rocket bodies falling on it as an attack, it becomes prudent to try to avoid flying over that neighbor on ascent."
 

Similar threads

  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
3
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 5 ·
Replies
5
Views
12K
  • Sticky
  • · Replies 48 ·
2
Replies
48
Views
68K
  • · Replies 80 ·
3
Replies
80
Views
12K
  • · Replies 3 ·
Replies
3
Views
5K
  • · Replies 1 ·
Replies
1
Views
3K