Earthquake Details Magnitude 4.8 Date-Time Friday, May 28, 2010 at 03:04:52 UTC Friday, May 28, 2010 at 11:04:52 AM at epicenter Location 31.799°N, 104.246°E Depth 10 km (6.2 miles) set by location program Region EASTERN SICHUAN, CHINA Distances 64 km (40 miles) NW (312°) from Mianyang, Sichuan, China 132 km (82 miles) N (6°) from Chengdu, Sichuan, China 164 km (102 miles) WSW (245°) from Guangyuan, Sichuan, China 1210 km (752 miles) N (353°) from HANOI, Vietnam Location Uncertainty horizontal +/- 6.6 km (4.1 miles); depth fixed by location program Parameters NST= 40, Nph= 40, Dmin=>999 km, Rmss=0.7 sec, Gp= 79°, M-type=body wave magnitude (Mb), Version=7 Source U.S. Geological Survey, National Earthquake Information Center: World Data Center for Seismology, Denver Event ID us2010wvag