Contents  on 12 July '12

Note: The A/CC news pages may be slow or late to update on July 13th.

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 12 July '12

One object reported inside ten LD

One visitor is reported moving within ten lunar distances (LD) of Earth today. Radar target 2012 MY2 departs from inside ten LD, traveling from 9.93 to 10.73 LD. Nothing else is known to come this close again until November.

This report was generated at 1455 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.

NEOCP Activity  on 12 July '12

The MPC's NEO Confirmation Page has 1 listing

When last checked at 2302 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one object listed. This was a "one nighter." So far The Tracking News has counted a total of two 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 12 July '12

Minor Planet Electronic Circulars

As of last check at 2302 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2012-N16 - "15:59 UT" - 2009 KK8

<< DOU on 12 July '12 >>  MPEC 2012-N15 - "06:01 UT" - Daily Orbit Update

Observers  on 12 July '12

Nine observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 17 in MPEC 2012-N15 -- 2012 MS4, 2012 MR7, 2012 MQ3, 2012 MP, 2012 MO3, 2012 MN2, 2012 MM11, 2012 ML6, 2012 MK6, 2012 MB7, 2012 MA7, 2012 LZ1, 2012 LU7, 2012 LF11, 2012 LE11, 2012 FY23, 332408
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2012-N15 -- 2012 MZ6
807}program code "}" (33) via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPEC 2012-N15 -- 2012 DO, 2012 DH4
704LINEAR in New Mexico, 1 in MPEC 2012-N15 -- 16960
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-N16 -- 2009 KK8
J53Posadas Obs. in Spain, 2 in MPEC 2012-N15 -- 326732, 153958
H36Sandlot Obs. in Kansas, 2 in MPEC 2012-N15 -- 2012 MQ3, 2012 MN2
B38Santa Mama Obs. in Italy, 7 in MPEC 2012-N15 -- 2012 LU7, 2012 HG31, 331471, 329437, 326732, 308242, 141056
J84South Obs. in England, 1 in MPEC 2012-N15 -- 2012 MM11
G56Walnut Creek Obs. in northern California, 1 in MPEC 2012-N15 -- 2012 MM11
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 July '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2302 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 JC170NEODyS1453R E M O V E D-
2009 MH1NEODyS1453R E M O V E D-

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 12 July '12

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

1604Grabbed MPEC 2012-N16 - 2009 KK8 - see above
Noted that the NEOCP has become active
1455Generated Traffic Report
1453Noted that NEODyS has removed 2009 MH1 as an impact risk - see above
Noted that NEODyS has removed 2010 JC170 as an impact risk - see above
Grabbed MPEC 2012-N15 - Daily Orbit Update - see above
Noted that the NEOCP has become empty
0503Noted that the NEOCP has become active