Contents  on 28 June '07

WELCOME to A/CC's prototype daily news publication designed to be the viewing end of a planned autonomous 24-hour news service. The new tools and this publication format are working well enough now to share with readers. It is expected that this approach will require less time to maintain than our previous news and small asteroid pages, which were retired on May 14th. There's still more development ahead and there probably will be some glitches along the way, but this is what's needed to keep up with the increasing pace of minor-object news. The CRT page will be maintained separately for a little while longer, until all of this is working smoothly. And the CRT and small-asteroid ephemerides will be kept going.

Minor-Object News  on 28 June '07

Minor-Object Science  on 28 June '07

NEOCP Activity  on 28 June '07

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty and hasn't been noted by Major News as active yet today (last checked at 2341 UTC).

New MPECs  on 28 June '07

Minor Planet Electronic Circulars

As of last check at 2341 UTC, there have been two MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2007-M49 - "14:27 UT" - 2007 MK6 = 2006 KT67

<< DOU on 28 June '07 >>  MPEC 2007-M48 - "06:08 UT" - Daily Orbit Update

Observers  on 28 June '07

Eight observing facilities appear in today's MPECs.

A88Bolzaneto Obs., 1 in MPEC 2007-M48 -- 85275
703Catalina Sky Survey in Arizona, 2 in MPEC 2007-M48 -- 2007 MM13, 2007 KN4
808El Leoncito Obs. in Argentina, 1 in MPEC 2007-M48 -- 2000 UV16
J95Great Shefford Obs. in England, 5 in MPEC 2007-M48 -- 2007 MB24, 2007 MR, 2007 MT20, 2007 ML13, 2007 GS3
A24New Millennium Obs. in Italy, 10 in MPEC 2007-M48 -- 2007 DB83, 2007 DK8, 2007 CO26, 2007 BB50, 154007, 152895, 31221, 22771, 3199, 3103
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2007-M48 -- 2000 AX93, 52750
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2007-M48 -- 2007 ML24, 2007 MB24, 2007 LB15, 9202
6735Jim Young via Table Mtn. Obs. in southern California, 3 in MPEC 2007-M48 -- 2007 MC4, 2007 LV19, 2007 LL

Impact Risk Monitoring  on 28 June '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2342 UTC)
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, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.





Notes for Today's Latest Risk Assessments
2007 ML24NEODyS16462011-2090972.04e-06-2.15-2.430NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2007/06/21.430 to 2007/06/24.456."
JPL14332011-21064883.7e-06-2.07-2.440JPL: "Analysis based on 11 observations spanning 3.0256 days (2007-Jun-21.42934 to 2007-Jun-24.4549)." Diameter approximately 0.512 km. from mean, weighted H=19.1.
2007 MB24NEODyS14342037-2086212.62e-08-3.95-4.470NEODyS: "Based on 60 optical observations (of which 0 are rejected as outliers) from 2007/06/24.325 to 2007/06/27.957."
JPL14332040-2106162.9e-08-3.94-4.510JPL: "Analysis based on 60 observations spanning 3.6322 days (2007-Jun-24.32377 to 2007-Jun-27.95598)." Diameter approximately 0.718 km. from mean, weighted H=18.4.

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

For a list of all risk-rated objects recently 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.

Chronology  on 28 June '07

Times are UTC for when the items were noted by Major News.

2001Added link to news story, "Scientists find that Earth and Mars are different to the core"
Added link to news story, "Cornell and NAIC search for funding to keep Arecibo's radar alive"
Added link to news story, "Mars and Earth: Different to the Core"
1646Noted that NEODyS has posted 2007 ML24 as an impact risk - see above
1643Added link to news story, "Radioactive iron, a window to the stars"
Added link to news story, "Dawn ELV status report"
1549Added MOS paper, "Carbonates in space -- The challenge of low temperature data" - see above
Added MOS paper, "The Thermal Regulation of Gravitational Instabilities in Protoplanetary Disks. IV. Simulations with Envelope Irradiation" - see above
Added MOS paper, "The Thermal Structure of the Circumstellar Disk Surrounding the Classical Be Star gamma Cassiopeia" - see above
1434Noted that NEODyS has updated its 2007 MB24 risk assessment - see above
1433Noted that JPL has updated its 2007 MB24 risk assessment - see above
Noted that JPL has updated its 2007 ML24 risk assessment - see above
Grabbed MPEC 2007-M48 - Daily Orbit Update - see above
Grabbed MPEC 2007-M49 - 2007 MK6 = 2006 KT67 - see above
The NEOCP has become empty