I am not quite sure what I am tracking and tracing here, so far....

https://en.wikipedia.org/wiki/Putuo_District,_Zhoushan

https://en.wikipedia.org/wiki/Zhoushan


ending up with a list of minor planets:

https://en.wikipedia.org/wiki/List_of_minor_planets:_4001%E2%80%935000#901

so they haven't found a new one since 1991 - why would that be?

and it appears to be the Japanese who were finding them...apart from....let me see...I've just found this entry:

4874 Burke

1991 AW

January 12, 1991

Paloma https://en.wikipedia.org/wiki/Eleanor_F._Helin

E. F. Helin