I took it as "Unknown Acronym." (Had to look up NdeGT.)
Uhm....
Neil deGrasse Tyson did NOT demote Pluto.
The International Astronomical Union did demote Pluto.
Yes, Tyson was an advocate for it. But it wasn't his decision.
Make yourself a target and people shoot at you.
Pluto has enough mass / gravity to have five recognized, named, moons: Charon, Styx, Nix, Kerberos, and Hydra.
My vote is it's a planet, but my vote doesn't count worth a fart in a hurricane.
Terry, 230RN