| Date | Miss Distance | Speed |
|---|---|---|
| August 28, 1900 | 0.0611 AU (9.1 million km) | 14.0 km/s |
| February 25, 1904 | 0.0804 AU (12.0 million km) | 16.1 km/s |
| January 18, 1919 | 1.6873 AU (252.4 million km) | 3.5 km/s |
| November 12, 1923 | 0.0169 AU (2.5 million km) | 14.9 km/s |
| August 22, 1927 | 0.1006 AU (15.0 million km) | 12.7 km/s |
| August 24, 1942 | 1.6769 AU (250.9 million km) | 3.5 km/s |
| March 26, 1966 | 1.7255 AU (258.1 million km) | 3.7 km/s |
| May 7, 1981 | 0.1460 AU (21.8 million km) | 14.4 km/s |
| October 20, 1989 | 1.8386 AU (275.1 million km) | 4.1 km/s |
| September 7, 1991 | 0.0546 AU (8.2 million km) | 16.7 km/s |
| September 24, 2004 | 0.0521 AU (7.8 million km) | 15.7 km/s |
| September 10, 2028 | 0.0967 AU (14.5 million km) | 18.0 km/s |
| December 23, 2048 | 0.0991 AU (14.8 million km) | 15.9 km/s |
| September 6, 2065 | 0.0305 AU (4.6 million km) | 16.3 km/s |
| March 21, 2121 | 1.9864 AU (297.2 million km) | 4.0 km/s |
| November 10, 2144 | 1.8974 AU (283.8 million km) | 3.8 km/s |
| August 19, 2146 | 0.1113 AU (16.6 million km) | 12.5 km/s |
| July 4, 2166 | 0.0561 AU (8.4 million km) | 14.4 km/s |
| July 5, 2168 | 1.8195 AU (272.2 million km) | 3.7 km/s |
| September 12, 2173 | 0.1325 AU (19.8 million km) | 18.7 km/s |
| June 6, 2183 | 0.0499 AU (7.5 million km) | 14.8 km/s |
| March 12, 2192 | 1.7892 AU (267.7 million km) | 3.6 km/s |
| May 15, 2200 | 0.0679 AU (10.2 million km) | 14.3 km/s |
9856 (1991 EE) is classified as a Potentially Hazardous Asteroid (PHA) because it is estimated to be larger than 140 meters and its orbit comes within 0.05 AU of Earth. NASA continuously monitors this object for any future impact risk. Current data does not indicate a confirmed impact event.
9856 (1991 EE) is classified as a potentially hazardous asteroid (PHA) by NASA. This means it is large enough and its orbit brings it close enough to Earth to warrant close monitoring. However, a PHA classification does not mean an impact is imminent.
The closest recorded Earth approach of 9856 (1991 EE) is 0.0611 AU (9.1 million km) on August 28, 1900, at a speed of approximately 14.0 km/s.
9856 (1991 EE) has an estimated diameter of 1.64 km (1015โ2270 meters range). Its absolute magnitude (H) is 17.09, which NASA uses along with assumed albedo to estimate size.