gnss          https://celestrak.org/NORAD/elements/gp.php?GROUP=gnss&FORMAT=tle
# starlink    https://celestrak.org/NORAD/elements/gp.php?GROUP=starlink&FORMAT=tle
# oneweb      https://celestrak.org/NORAD/elements/gp.php?GROUP=oneweb&FORMAT=tle
# intelsat    https://celestrak.org/NORAD/elements/gp.php?GROUP=intelsat&FORMAT=tle
# iridium     https://celestrak.org/NORAD/elements/gp.php?GROUP=iridium-NEXT&FORMAT=tle
# geosync     https://celestrak.org/NORAD/elements/gp.php?GROUP=geo&FORMAT=tle
