# Two-Line Element (TLE)

Functions for parsing, validating, and converting Two-Line Element sets.

For propagating orbits from TLE data, use the [`SGPPropagator`](../propagators/sgp_propagator.md) class.

## TLE Utility Functions

::: brahe.orbits.epoch_from_tle

::: brahe.orbits.keplerian_elements_from_tle

::: brahe.orbits.keplerian_elements_to_tle

::: brahe.orbits.create_tle_lines

::: brahe.orbits.validate_tle_line

::: brahe.orbits.validate_tle_lines

::: brahe.orbits.calculate_tle_line_checksum

::: brahe.orbits.parse_norad_id

::: brahe.orbits.norad_id_numeric_to_alpha5

::: brahe.orbits.norad_id_alpha5_to_numeric