To download the latest TLEs for all low-earth-orbit satellites, use the following URL (Space-track username/password required):

https://www.space-track.org/basicspacedata/query/class/tle_latest/ORDINAL/1/EPOCH/%3Enow-30/MEAN_MOTION/%3E11.25/ECCENTRICITY/%3C0.25/OBJECT_TYPE/payload/orderby/NORAD_CAT_ID/format/3le
