NASA NEO Program Current Impact Risks
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The following table lists potential future Earth impact events that the JPL Sentry System has detected based on currently available observations. Click on the object designation to go to a page with full details on that object.

Sentry is a highly automated collision monitoring system that continually scans the most current asteroid catalog for possibilities of future impact with Earth. Whenever a potential impact is detected it will be analyzed and the results immediately published here, except in unusual cases where an IAU Technical Review is underway. For more information on impact monitoring and risk assessment see our Introduction and FAQ.

It is normal that, as additional observations become available, objects will disappear from this table whenever there are no longer any potential impact detections. For this reason we maintain a list of removed objects with the date of removal.


36 NEAs: Last Updated Mar 20, 2002
Sort by Palermo Scale (cum.) or by Object Designation

Object
Designation
Year
Range
Potential
Impacts
Impact
Prob.

(cum.)
Vinfinity
(km/s)
H
(mag)
Est.
Diam.

(km)
Palermo
Scale

(cum.)
Palermo
Scale

(max.)
Torino
Scale

(max.)
2002 EZ11 2013-2033 22 3.2e-06 25.28 18.4  0.708 -1.47 -2.06 0
2002 CU11 2033-2096 6 5.7e-06 26.39 18.3  0.730 -1.73 -1.92 1
2002 EY2 2019-2101 22 2.9e-06 15.88 19.4  0.440 -2.75 -3.03 0
1994 WR12 2054-2101 132 8.4e-05 9.85 22.2  0.129 -2.95 -3.80 0
1979 XB 2056-2101 3 3.3e-07 24.54 18.5  0.685 -3.07 -3.15 0
2000 SG344 2068-2101 69 1.8e-03 1.37 24.8  0.040 -3.07 -3.43 0
2000 QS7 2053-2053 2 1.3e-06 12.32 19.6  0.420 -3.28 -3.46 0
1994 UG 2010-2101 106 7.5e-06 6.30 21.3  0.187 -3.35 -3.52 0
1994 GK 2051-2071 7 6.1e-05 14.87 24.2  0.050 -3.83 -3.84 0
2000 SB45 2074-2101 83 1.5e-04 7.54 24.3  0.050 -3.86 -4.28 0
2001 CA21 2020-2073 6 1.8e-08 30.66 18.5  0.678 -3.88 -4.11 0
1998 OX4 2038-2101 15 2.6e-06 12.16 21.3  0.184 -3.90 -4.47 0
1998 HJ3 2100-2100 2 7.2e-08 24.23 18.4  0.700 -3.94 -4.16 0
2002 CB19 2032-2099 13 3.0e-05 15.81 24.7  0.040 -4.24 -4.55 0
2001 FB90 2021-2067 4 3.6e-08 26.63 19.9  0.363 -4.31 -4.46 0
2001 BB16 2084-2100 4 5.4e-06 3.57 22.6  0.100 -4.57 -4.70 0
2001 GP2 2043-2099 32 1.0e-04 2.58 26.9  0.010 -5.26 -5.71 0
1996 TC1 2054-2075 4 9.4e-07 24.04 23.9  0.060 -5.28 -5.52 0
1995 CS 2042-2073 6 3.7e-06 24.91 25.5  0.030 -5.34 -5.70 0
1994 GV 2048-2086 23 9.2e-05 8.15 27.5  0.010 -5.40 -5.99 0
2001 AV43 2066-2094 7 4.2e-06 3.68 24.3  0.050 -5.42 -5.77 0
6344 P-L 2022-2052 2 2.8e-08 15.34 21.1  0.207 -5.44 -5.67 0
2001 QJ96 2032-2032 1 2.9e-08 26.69 22.0  0.130 -5.49 -5.49 0
2000 LG6 2075-2101 20 8.6e-04 2.10 29.0  0.010 -5.49 -5.91 0
2001 BA16 2033-2051 4 5.3e-06 4.90 25.8  0.020 -5.77 -5.80 0
1999 RZ31 2056-2056 1 4.5e-07 8.20 23.8  0.060 -5.92 -5.92 0
1999 SF10 2080-2100 3 1.0e-06 4.76 24.0  0.050 -5.98 -6.23 0
2001 SB170 2089-2096 3 5.3e-08 22.49 22.4  0.110 -6.00 -6.28 0
1997 TC25 2046-2090 5 7.7e-07 12.49 24.7  0.040 -6.13 -6.33 0
1997 UA11 2053-2073 2 5.1e-07 12.02 25.1  0.030 -6.34 -6.36 0
2001 UO 2020-2020 1 5.4e-09 16.28 24.1  0.050 -7.28 -7.28 0
1991 BA 2014-2096 11 8.7e-07 18.03 28.7  0.010 -7.48 -7.97 0
2000 SZ162 2070-2096 3 5.3e-07 4.18 27.1  0.010 -7.67 -8.01 0
2001 YN2 2020-2020 1 3.2e-09 18.49 24.9  0.030 -7.85 -7.85 0
2002 AN129 2080-2080 1 6.9e-08 11.35 26.1  0.020 -7.88 -7.88 0
1998 WD31 2080-2080 1 4.2e-10 10.60 22.5  0.110 -8.39 -8.39 0

Table Legend

Object Designation
Temporary designation or permanent number for this object. Assigned by the Minor Planet Center.

Year Range
Time span over which impacts have been detected. Typically, searches are conducted 100 years into the future.

Potential Impacts
The number of dynamically distinct potential impacts that have been detected by Sentry. There can be several qualitatively unique pathways to impact in a given year, e.g., some with an extra revolutions around the sun, others deflected to impact by an earlier planetary encounter.

Impact Prob. (cum.)
The sum of the impact probabilities from all detected potential impacts.

Vinfinity
The velocity of the asteroid relative to the Earth, assuming a massless Earth.

H
Absolute Magnitude is an intrinsic measure of brightness. It is the apparent magnitude of the object when it is 1 AU from both the sun and the observer, and at full phase for the observer.

Est. Diam.
The estimated diameter of the asteroid, assuming a visual albedo pV = 0.154. The actual diameter could differ by as much as a factor of two.

Palermo Scale (cum.) & (max.)
The cumulative and maximum hazard ratings according to the Palermo Technical Impact Hazard Scale.

Torino Scale (max.)
The maximum detected hazard rating using the Torino Impact Hazard Scale. According to this ten-point scale, a rating of zero indicates the event has "no likely consequences." A Torino Scale rating of 1 indicates an event that "merits careful monitoring." Even higher ratings indicate that progressively more concern is warranted.


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Ron Baalke, Near-Earth Object Webmaster
Jet Propulsion Laboratory
Pasadena, California