Data and algorithms

TLE 校验位
TLE checksum

A modulo-10 check digit at the end of each line.

A failed check means the data was corrupted.

Related terms

Ephemeris — A table or algorithm giving positions at given times.
UTC — The global time standard; it ignores daylight saving.
ISO 8601 — The international date-time format, e.g. 2026-10-30T18:21:00Z.
Snapshot — The copy of the data taken at build time.