Simplify the following text for a Grade 14 native English-speaking person.
Original: It is easily the largest of the F-type asteroids , but there exist very few details of its internal composition or shape , and no lightcurve analysis has yet been done to determining the ecliptic coordinates of Interamnia 's poles ( and hence its axial tilt ) .
Simplified: It is easily the biggest of the F-type asteroids , but there exist very few details of what the inside is made of or shape and no lightcurve analysis has yet been done to find out the ecliptic coordinates of Interamnia 's poles ( and hence its axial tilt ) .