Contents  on 9 May '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 9 May '12

No objects reported inside ten LD

No asteroids are reported flying within ten lunar distances (LD) of Earth today. On approach next, 2010 KK37 arrives inside ten LD on May 15th.

This report was generated at 1634 UTC noting that today's DOU MPEC reports observation of 2012 HN1 from two weeks ago.

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 9 May '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 2308 UTC when the database was dated 9 May

NEOCP Activity  on 9 May '12

The MPC's NEO Confirmation Page has 7 listings

When last checked at 2337 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had seven objects listed. Of these, five were "one nighters."

New MPECs  on 9 May '12

Minor Planet Electronic Circulars

As of last check at 2346 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 9 May '12 >>  MPEC 2012-J24 - "06:02 UT" - Daily Orbit Update

MPEC 2012-J23 - "02:00 UT" - 2010 MW

Observers  on 9 May '12

Nine observers appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 1 in radar -- 2012 HL
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPEC 2012-J24 -- 2012 HZ33, 2012 HW1, 2012 HN2, 2012 HM8, 2012 HL, 2012 FD1
822Cordoba Obs. in Argentina, 1 in MPEC 2012-J24 -- 315098
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPECs 2012-J23 & 2012-J24 -- 2010 MW, 2010 KY127
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-J24 -- 2012 HN1
644NEAT's Mt. Palomar telescope in southern California, 2 in MPEC 2012-J24 -- 2001 JW2, 326388
A24New Millennium Obs. in Italy, 4 in MPEC 2012-J24 -- 2012 HL, 85275, 36183, 154144
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPEC 2012-J24 -- 99942, 85953, 304153
645Sloan Digital Sky Survey (SDSS) in New Mexico, 11 in MPEC 2012-J24 -- 2004 TC10, 2004 KT, 1999 HD1, 96315, 90367, 141526, 11066, 6455, 5645, 3838, 1865
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 May '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2346 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
2010 RF12NEODyS16302095-210098.47e-02-3.11-3.110NEODyS: "Based on 324 optical observations (of which 5 are rejected as outliers) from 2010-09-05.406 to 2010-09-08.516."

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 9 May '12

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

2308Noted Radar Astrometry database update - see above
2106Noted that the NEOCP has become active
1634Generated Traffic Report
1630Noted that NEODyS has updated its 2010 RF12 risk assessment - see above
Grabbed MPEC 2012-J24 - Daily Orbit Update - see above
0307Grabbed MPEC 2012-J23 - 2010 MW - see above