- dis cover ed ▁with ▁Brown ▁and ▁Rab in ow itz ▁ ▁Er is , ▁co - dis cover ed ▁ ▁with ▁Brown ▁and ▁Rab in ow itz ▁– ▁the ▁only ▁known ▁T NO ▁more ▁massive ▁than ▁Pl uto ▁ ▁, ▁discovery ▁cred ited ▁to ▁the ▁Sierra ▁Nev ada ▁Observ atory , ▁Spain ▁( also ▁see ▁José ▁Luis ▁Ort iz ▁Mor eno ). ▁ ▁, ▁co - dis cover ed ▁with ▁Brown ▁and ▁Rab in ow itz ▁in ▁ 2 0 0 5 , ▁one ▁of ▁the ▁first ▁ 5 ▁official ▁d war f ▁plan ets . ▁ ▁List ▁of ▁discovered ▁minor ▁plan ets ▁▁ ▁The ▁Minor ▁Planet ▁Center ▁cred its ▁Ch ad ▁Tru j illo ▁with ▁the ▁discovery ▁and ▁co - dis cover y ▁of ▁ 5 7 ▁minor ▁plan ets ▁during ▁ 1 9 9 6 – 2 0 1 3 . ▁His ▁numerous ▁co - dis cover ers ▁were : ▁ ▁D . ▁C . ▁Jew itt , ▁ ▁J . ▁X . ▁Lu u , ▁ ▁J . ▁Chen , ▁ ▁K . ▁Ber ney , ▁ ▁D . ▁J . ▁Th olen , ▁ ▁M . ▁E . ▁Brown , ▁ ▁W . ▁Evans , ▁ ▁S . ▁S . ▁She pp ard , ▁ ▁D . ▁L . ▁Rab in ow itz , ▁ ▁A . ▁U dal ski , ▁ ▁M . ▁Kub iak ▁and ▁ ▁R . ▁Pol es ki . ▁ ▁Sat ell ites ▁and ▁un cred ited ▁discover ies ▁ ▁Hon ors ▁and