[%# Astro::App::Satpass2 template file to render TLE data in JSON
    format. To use, load the TLE data, then do

    satpass2> formatter format eg/tle_json.tt

    -%]
[% UNLESS data %]
    [%- SET data = sp.tle( arg ) %]
[%- END %]
[%- json = instantiate( 'JSON' ).pretty.canonical.utf8.convert_blessed -%]
[% json.encode( data.bodies ) -%]