The band of latitudes a Satellite of this inclination and altitude can be
seen from, in degrees north and south of the equator: how far the
Footprint reaches past the furthest the Satellite's own ground track ever
goes. Given an elevation, the reach is the one that clears a real
horizon, as the Footprint radius is.
The furthest north or south the point beneath a Satellite goes is its
inclination, and a retrograde orbit's is what its inclination leaves of
half a turn: a sun-synchronous orbit at 98 degrees reaches 82. Beyond
that the Satellite is still seen from as far again as the Footprint
reaches, which is the half-angle at the centre of the Earth. The whole
never passes the pole, so it is capped at 90: such a Satellite is seen
from everywhere, and "up to 104 degrees" is not a latitude.
The band of latitudes a Satellite of this inclination and altitude can be seen from, in degrees north and south of the equator: how far the Footprint reaches past the furthest the Satellite's own ground track ever goes. Given an elevation, the reach is the one that clears a real horizon, as the Footprint radius is.
The furthest north or south the point beneath a Satellite goes is its inclination, and a retrograde orbit's is what its inclination leaves of half a turn: a sun-synchronous orbit at 98 degrees reaches 82. Beyond that the Satellite is still seen from as far again as the Footprint reaches, which is the half-angle at the centre of the Earth. The whole never passes the pole, so it is capped at 90: such a Satellite is seen from everywhere, and "up to 104 degrees" is not a latitude.