A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During July 2007

Compiled at 2355 UTC on 31 July 2007

<< June 2007 CRT | CRT Archive Index | August 2007 CRT >>

> Today's Risk Monitoring & Other Minor Object News <

Something missing? Here's where to look for info about 99942 Apophis (2004 MN4) and 144898 2004 VD17 . Check the archives for others.

Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2080.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.


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Time & Day



Notes for Latest Risk Assessments
2007 OG3Sentry2259 July 22204017.4e-10-6.67-6.670Analysis based on 17 observations spanning 2.9331 days (2007-Jul-19.44939 to 2007-Jul-22.382539).
NEODyS1917 July 232028-205125.06e-09-5.64-5.640Based on 17 optical observations (of which 0 are rejected as outliers) from 2007/07/19.450 to 2007/07/22.383.
Risk news reports: 22 July & 23 July   -   References: MPEC 2007-O38
2007 MB24NEODyS1329 July 1R E M O V E D
Sentry1329 July 1R E M O V E DRisk listing removed at 1008 UTC 1 July
Risk news reports: 1 July   -   References: no MPECs except DOUs 2007-N01, 2007-N02, 2007-N03, 2007-N12, 2007-N13, 2007-N15, 2007-N20, 2007-N21, 2007-N22, 2007-N24, 2007-N30, 2007-N40, 2007-N41, 2007-O02, 2007-O04, 2007-O11, 2007-O15, 2007-O33, 2007-O36, 2007-O40, 2007-O42, 2007-O43, 2007-O50, 2007-O52 & 2007-O53
2007 LQ19NEODyS1439 July 15R E M O V E D
Sentry1439 July 15R E M O V E DRisk listing removed at 1000 UTC 15 July
Risk news reports: 3 July & 15 July   -   References: no MPECs except DOUs 2007-N03, 2007-N41 & 2007-O52

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

For a list of risk-rated objects currently in view, see our ephemerides page.

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from an orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" for more about this.

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