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The table below lists all NEOs that have been assigned a non-zero Torino Scale rating either currently or in the past, since the UK NEO Information Centre opened. The table illustrates the increasingly routine nature of non-zero Torino Scale ratings, and should not be interpreted in any way as a warning or alarm system.
The assessment of the impact hazard of NEOs and the complex task of assigning a Torino Scale rating for each object is performed by two independent systems, Sentry at NASA's Jet Propulsion Laboratory in Pasadena, and the NEODyS system at the University of Pisa in Italy. The information in this table is updated manually, and therefore may not always reflect the very latest data from the automated systems.
Object Designation |
First Observed |
Maximum Torino Rating |
Current Torino Rating |
Status |
2004 MN4more |
19-06-04 |
four |
one |
more observations needed |
2004 VD17more |
7-11-04 |
two |
one |
more observations needed |
2004 FU4more |
19-03-04 |
one |
zero |
risk eliminated |
2004 DV24more |
21-02-04 |
one |
zero |
risk eliminated |
2003YT1more |
18-12-03 |
one |
zero |
risk eliminated |
2003QO104more |
31-8-03 |
one |
zero |
risk eliminated |
2003QQ47more |
24-8-03 |
one |
zero |
risk eliminated |
2003MH4more |
26-6-03 |
one |
zero |
risk eliminated |
2003EE16more |
8-3-03 |
one |
zero |
risk eliminated |
2003CR20more |
11-2-03 |
one |
zero |
risk eliminated |
2002XY38more |
7-12-02 |
one |
zero |
risk eliminated |
2002LY45more |
14-6-02 |
one |
zero |
risk eliminated |
2002EZ11more |
15-3-02 |
one |
zero |
risk eliminated |
2002CU11more |
7-2-02 |
one |
zero |
risk eliminated |
1997XR2more |
4-12-97 |
one |
one |
more observations needed |
1950DAmore |
22-2-1950 |
two |
two* |
over 800yrs to potential impact |
When a newly discovered object has only been observed for a short period of time, there may be several potential impacts detected. In these cases, additional observation are needed to be able to rule out the very small chance of an impact. Such objects have 'more observations needed' in the status column of the table.
When enough observations have been made to enable astronomers to rule out potential impacts, the words 'risk eliminated' appear in the status column.
More detailed and technical information about an individual NEO, including an orbit simulation, is provided by the JPL NEO Program Office, and is available by clicking 'more' next to the object designation of any object within the table above.
*1950 DA is an asteroid for which there is some possibility of impact in March of the year 2880. The case is extraordinary because the current orbit of 1950 DA is very precisely known, which allows potential impacts to be explored centuries into the future, much farther than is usually possible. The JPL NEO Program Office have a page that details the history of asteroid 1950DA.
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