Table 3. Control volume of 3D space debris model

	Altitude [km]	Δα [deg]	Δδ [deg]	Δr [km]	Total cell #
LEO	186–2,286	10	2	10	680,400
MEO	2,286–34,786	10	5	500	84,240
GEO	34,786–36,786	10	2	20	324,000

LEO, low Earth orbit; MEO, medium Earth orbit; GEO, geostationary Earth orbit.