Contents  on 24 July '12

Note: The A/CC news pages will update less often and at irregular intervals through early July 25th.

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 24 July '12

Two objects reported inside ten LD

There are two objects reported moving inside ten lunar distances (LD) of our planet today. 2012 OQ comes its closest to Earth on this passage, reaching 7.69 LD at 1828 UTC, and 2012 OU1 is inbound from from 9.78 to 8.82 LD. No other objects are known to be approaching to come inside ten LD until November.

This report was updated at 1626 UTC with follow-up in today's DOU MPEC for 2012 OU1 and 2012 OQ. Today's first traffic report was generated at 0110 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 24 July '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 0109 UTC when the database was dated 23 July

NEOCP Activity  on 24 July '12

The MPC's NEO Confirmation Page has 3 listings

When last checked at 1747 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three objects listed. Of these, one was a "one nighter."

New MPECs  on 24 July '12

Minor Planet Electronic Circulars

As of last check at 1747 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 24 July '12 >>  MPEC 2012-O31 - "06:02 UT" - Daily Orbit Update


MPEC 2012-O30 - "01:30 UT" - 2005 UC

Observers  on 24 July '12

Sixteen observers appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 1 in radar -- 2012 OO
H21Astronomical Research Obs. Westfield in Illinois, 18 in MPEC 2012-O31 -- 2012 OZ, 2012 OQ, 2012 OE1, 2012 OD1, 2012 OC1, 2012 OB1, 2012 OA1, 2012 NQ, 2012 MV4, 2012 MM11, 2012 ML6, 2012 MK6, 2012 MB7, 2012 LL9, 2012 FM52, 2011 OP24, 2009 SP171, 1998 LD
160Castelmartini Obs. in Italy, 3 in MPEC 2012-O31 -- 2012 LE11, 37655, 317685
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 10 in MPEC 2012-O31 -- 2012 OZ, 2012 OC1, 2012 MN2, 2012 ML6, 2012 MK6, 2012 MG7, 2012 JT17, 2004 SD20, 275611, 162011
G58Chabot Obs. in northern California, 1 in MPEC 2012-O31 -- 2012 NN
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 3 in MPEC 2012-O31 -- 2012 MG7, 2012 LD1, 2012 FD1
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2012-O31 -- 2012 OE1
151Eschenberg Obs. in Switzerland, 3 in MPEC 2012-O31 -- 2012 OQ, 2012 OD1, 2012 MU2
719Etscorn Obs. in New Mexico, 2 in MPEC 2012-O31 -- 329614, 16960
J95Great Shefford Obs. in England, 4 in MPECs 2012-O30 & 2012-O31 -- 2012 OU1, 2012 OQ, 2012 NQ, 2005 UC
A17Guidestar Obs. in Germany, 3 in MPEC 2012-O31 -- 2012 OD1, 2012 OA1, 2006 DQ62
D05MPC code D05, 1 in MPEC 2012-O31 -- 2012 OE1
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2012-O31 -- 2012 OQ, 2012 OO, 2012 BZ76
474Mt. John Obs. in New Zealand, 6 in MPEC 2012-O31 -- 2012 OZ, 2012 OC1, 2012 NN, 2012 MJ6, 2006 QE, 162421
J93Mt. Tuffley Obs. in England, 3 in MPEC 2012-O31 -- 326732, 4179, 1685
I76Tesla Obs. in Spain, 1 in MPEC 2012-O31 -- 2012 OQ
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 July '12

At last check (NEODyS and JPL at 1747 UTC) there was no risk monitoring news to report yet today. Visit the CRT to view activity in the last four weeks and our ephemerides page for a complete list of risk-rated objects under current observation or having recent news.

Chronology  on 24 July '12

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

1626Updated Traffic Report
1621Grabbed MPEC 2012-O31 - Daily Orbit Update - see above
0536Grabbed MPEC 2012-O30 - 2005 UC - see above
0109Noted Radar Astrometry database update - see above