Contents  on 14 August '12

Asteroid/Comet Connection (A/CC) Resources:

The latest A/CC news is available via framed access, RSS news feed RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.

Traffic Report  on 14 August '12

No objects reported inside ten LD

There are no asteroids reported moving inside ten lunar distances (LD) of Earth today and none are known to be approaching until November. This report was generated at 0453 UTC.

Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Object distances are interpreted by A/CC from JPL Horizons data. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

Radar Astrometry  on 14 August '12

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:

Data update noted at 0149 UTC when the database was dated 13 Aug.

NEOCP Activity  on 14 August '12

The MPC's NEO Confirmation Page has 69 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 69 objects listed. Of these, 43 were "one nighters." So far The Tracking News has counted a total of 73 listings on the NEOCP today.

New MPECs  on 14 August '12

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been three MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2012-P35 - "22:00 UT" - 2012 PP17

MPEC 2012-P34 - "18:53 UT" - 2012 PO17

<< DOU on 14 Aug. '12 >>  MPEC 2012-P33 - "06:02 UT" - Daily Orbit Update

Observers  on 14 August '12

Thirteen observers appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2012-P35 -- 2012 PP17
251Arecibo in Puerto Rico, 1 in radar -- 153958
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPECs 2012-P33, 2012-P34 & 2012-P35 -- 2012 PX, 2012 PP17, 2012 PO17, 2012 PN, 2012 PG6, 2012 PG5
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2012-P33 -- 2012 HG31, 173561
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 4 in MPEC 2012-P33 -- 2012 PH6, 2012 PG6, 2012 LC1, 2012 DG61
C01Lohrmann Obs. in Germany, 2 in MPEC 2012-P33 -- 2000 RN77, 219071
A24New Millennium Obs. in Italy, 1 in MPEC 2012-P35 -- 2012 PP17
F51Pan-STARRS 1 (PS1) in Hawaii, 6 in MPECs 2012-P33, 2012-P34 & 2012-P35 -- 2012 PP17, 2012 PO17, 2003 DE6, 333521, 333284, 6063
E12Siding Spring Survey (SSS) in New South Wales, 6 in MPEC 2012-P33 -- 2012 PS4, 2012 OC1, 2008 SS251, 2008 CZ21, 2007 VO243, 2006 DY
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2012-P33 -- 2009 AK15
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2012-P33 & 2012-P34 -- 2012 PX, 2012 PO17, 2012 PN, 2012 PJ6, 2012 GK, 2012 ES14
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2012-P35 -- 2012 PP17
194Tivoli Obs. in Namibia, 1 in MPEC 2012-P33 -- 2012 OC1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 August '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON2 risk pages.





Notes for Today's Latest Risk Assessments
2012 PXJPL Sentry15052056-2108155.3e-06-4.60-4.980JPL: "Analysis based on 37 observations spanning 5.9748 days (2012-Aug-07.35157 to 2012-Aug-13.32642)." Diameter approximately 0.082 km. from mean, weighted H=23.1.
NEODyS15052067-2096137.04e-06-4.46-4.950NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2012-08-07.352 to 2012-08-13.327."

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

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant 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" to learn more.

Chronology  on 14 August '12

Times are UTC for when items were noted or added by The Tracking News.

2205Grabbed MPEC 2012-P35 - 2012 PP17 - see above
1903Grabbed MPEC 2012-P34 - 2012 PO17 - see above
1505Noted that JPL Sentry has updated its 2012 PX risk assessment - see above
Noted that NEODyS has updated its 2012 PX risk assessment - see above
Grabbed MPEC 2012-P33 - Daily Orbit Update - see above
0453Generated Traffic Report
0149Noted Radar Astrometry database update - see above