Contents  on 11 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 11 August '12

No objects reported inside ten LD

No objects are reported to be inside ten lunar distances (LD) of Earth today and none are known to be coming in until November.

This report was generated at 1543 UTC with follow-up from July reported in today's DOU MPEC for now departed 2012 OQ.

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.

NEOCP Activity  on 11 August '12

The MPC's NEO Confirmation Page has 9 listings

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

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 11 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-P25 - "19:09 UT" - 2012 PG5

MPEC 2012-P24 - "18:22 UT" - 2008 RM98

<< DOU on 11 Aug. '12 >>  MPEC 2012-P23 - "06:02 UT" - Daily Orbit Update

Observers  on 11 August '12

A total of 28 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 4 in MPECs 2012-P23 & 2012-P25 -- 2012 PG5, 2012 PA, 2012 MU2, 2012 CA55
C77Bernezzo Obs. in Italy, 1 in MPEC 2012-P23 -- 2000 RN77
B96Brixiis Obs. in Belgium, 1 in MPEC 2012-P25 -- 2012 PG5
160Castelmartini Obs. in Italy, 14 in MPECs 2012-P23 & 2012-P25 -- 2012 PG5, 2012 OP4, 2012 OO, 2012 OD1, 2012 LU7, 2009 AV, 2005 UC, 2000 RN77, 333707, 333284, 330825, 326732, 277475, 214869
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 6 in MPECs 2012-P23 & 2012-P25 -- 2012 PX, 2012 PG5, 2012 OZ, 2012 OU5, 2012 OT5, 2012 OC1
G58Chabot Obs. in northern California, 1 in MPEC 2012-P25 -- 2012 PG5
821Cordoba Obs. Bosque Alegre Station in Argentina, 1 in MPEC 2012-P25 -- 2012 PG5
E100Tim Lister in southern California via Faulkes Telescope South in New South Wales, 3 in MPECs 2012-P23 & 2012-P25 -- 2012 PG5, 214869, 136993
203GiaGa Obs. in Italy, 2 in MPEC 2012-P23 -- 2012 PA, 2010 OS22
J95Great Shefford Obs. in England, 4 in MPECs 2012-P23 & 2012-P25 -- 2012 PX, 2012 PN, 2012 PG5, 2012 PA
704LINEAR in New Mexico, 4 in MPECs 2012-P23 & 2012-P25 -- 2012 PG5, 333578, 217013, 5587
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2012-P25 -- 2012 PG5
B90Malina River Obs. in Italy, 1 in MPEC 2012-P25 -- 2012 PG5
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-P24 -- 2008 RM98
118Modra Obs. in Slovakia, 1 in MPEC 2012-P25 -- 2012 PG5
C23Olmen Obs. in Belgium, 1 in MPEC 2012-P25 -- 2012 PG5
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2012-P25 -- 2012 PG5
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2012-P23 -- 2012 PW, 2012 OD1, 2012 MK6, 2010 OS22, 2007 EJ26, 2000 RN77
J52Pinsoro Obs. in Spain, 1 in MPEC 2012-P23 -- 2012 OQ
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-P25 -- 2012 PG5
H36Sandlot Obs. in Kansas, 1 in MPEC 2012-P25 -- 2012 PG5
E12Siding Spring Survey in New South Wales, 1 in MPEC 2012-P23 -- 7888
J84South Obs. in England, 1 in MPEC 2012-P23 -- 217013
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2012-P23 -- 2003 AL18, 1998 QC1
291Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2012-P23 -- 2012 BN11, 2011 GQ61, 2010 AE, 2007 PB8, 2007 LD, 3753
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2012-P25 -- 2012 PG5
954Teide Obs. in the Canary Islands, 1 in MPEC 2012-P25 -- 2012 PG5
C44Volta Obs. in Italy, 1 in MPEC 2012-P25 -- 2012 PG5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 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 Sentry15352035-2110651.8e-05-3.94-4.330JPL: "Analysis based on 24 observations spanning 3.6378 days (2012-Aug-07.35157 to 2012-Aug-10.98934)." Diameter approximately 0.079 km. from mean, weighted H=23.2.

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 11 August '12

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

1911Grabbed MPEC 2012-P25 - 2012 PG5 - see above
1823Grabbed MPEC 2012-P24 - 2008 RM98 - see above
1543Generated Traffic Report
1535Noted that JPL Sentry has updated its 2012 PX risk assessment - see above
Grabbed MPEC 2012-P23 - Daily Orbit Update - see above