This object is too new for NASA to post past Close Approach history, so I ran JPL orbit program backward to spot last close approach which was the week of May 31, 1983. That same week one of the 2 biggest quakes in years hit. Probably means nothing though...

1980's 7.8 or greater

PDE 1980 07 08 231919.80 -12.41 166.38 33 7.8 UKBRK .F. .......
PDE 1980 07 17 194223.20 -12.52 165.92 33 8.0 UKBRK .F. .T.....
PDE 1983 03 18 090550 -4.88 153.58 88 7.9 MSBRK 7DM .T....M
PDE 1983 05 26 025959.60 40.46 139.10 23 7.8 MSPAL 8CM .T.....
PDE 1985 03 03 224707.28 -33.13 -71.87 33 7.8 MsGS 8CM ST....M
PDE 1985 09 19 131747.35 18.19 -102.53 27 8.0 MwHRV 9CM .TS...M
PDE 1986 05 07 224710.87 51.52 -174.78 33 8.0 MwHRV 6DM .T.....
PDE 1986 10 20 064609.98 -28.12 -176.37 29 8.3 MSBRK .FM .T.....
PDE 1986 11 14 212010.55 23.90 121.57 33 7.8 MsGS 8CM ......S
PDE 1987 11 30 192319.59 58.68 -142.79 10 7.9 MwHRV 6DM .T.....
PDE 1988 03 06 223538.14 56.95 -143.03 10 7.8 MwHRV 5DM .T.....
PDE 1989 05 23 105446.32 -52.34 160.57 10 8.2 MsGS 5FM .T.....