Not more than 400 km. The conversion period is 90 minutes. Yes, look at yourself http://re-actor.net/space/992-iss-live-stream.html NASA camcorders link is blocked by the decision of the project administration. lizard-tail. com / isana / tracking / the real position of the ISS (here the Spaces clean after the points)
The height of the ISS's orbit is constantly changing. Due to the residues of the atmosphere, there is a gradual deceleration and a decrease in altitude. All incoming ships help to raise the height due to their engines. At one time, they limited themselves to compensating for the decline. Recently, the altitude of the orbit has been steadily increasing. 10 Feb 2011 The height of the flight of the International Space Station was about 353 kilometers above sea level. 15 June 2011 increased by 10,2 kilometers and amounted to 374,7 kilometers. 29 June 2011 orbit height was 384,7 kilometers. In order to reduce the effect of the atmosphere to a minimum, the station had to be raised to 390400 km, but American shuttles could not rise to such a height. Therefore, the station was kept at altitudes of 330350 km by periodic engine correction. In connection with the end of the program a half of the shuttles, this restriction is lifted.