Contents  on 29 October '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 29 October '12

Five objects reported inside ten LD

There are five objects reported traveling within ten lunar distances (LD) of our planet today. Within Earth's Hill sphere, risk-listed 2012 UU169 comes its closest to Earth this time around, reaching 2.98 LD at 1201 UTC. Further out, newly announced 2012 UK171 is outbound from 7.54 to 7.85 LD while 2012 UX136 is inbound from 8.7 to 7.6 LD* and new discovery 2012 UL171 from 8.9 to 8.5 LD*, and 2012 UW9 may be coming its closest to Earth on this passage -- 9.4 LD at 0324 UTC (uncertainty: +/- 5.4333 hours).

Up next, 2012 UV136 arrives inside ten LD on November 1st, risk-listed 2012 UY68 arrives on November 7th, and radar target 2010 JK1 on November 22nd.

This report was updated at 1614 UTC with follow-up in today's DOU MPEC for 2012 UK171. Today's first report was generated at 0050 UTC with new discoveries 2012 UL171 (MPEC) and 2012 UK171 (MPEC) announced yesterday.


Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Earth's Hill sphere (of gravitational influence) is estimated to extend out to around 3.89 LD. Object distances are interpreted by A/CC from JPL Horizons data. "LD*" indicates some passage uncertainty. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 29 October '12

The MPC's NEO Confirmation Page has 25 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 25 objects listed. Of these, 20 were "one nighters."

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 29 October '12

Minor Planet Electronic Circulars

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


MPEC 2012-U119 - "14:21 UT" - 2012 GS5


<< DOU on 29 Oct. '12 >>  MPEC 2012-U118 - "06:07 UT" - Daily Orbit Update

Observers  on 29 October '12

Eight observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2012-U118 -- 2012 UB69
300Bisei Spaceguard Center in Japan, 1 in MPEC 2012-U118 -- 2012 UK171
448Desert Moon Obs. in New Mexico, 5 in MPEC 2012-U118 -- 275611, 265962, 214869, 138847, 112985
B15Inastars Obs. in Germany, 1 in MPEC 2012-U118 -- 2009 LS
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-U119 -- 2012 GS5
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2012-U118 -- 1998 WL4
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPEC 2012-U118 -- 2012 OO, 2007 VO243, 329340, 137052
I76Tesla Obs. in Spain, 1 in MPEC 2012-U118 -- 2012 US136
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 October '12

At last check (NEODyS and JPL at 2359 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 29 October '12

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

1614Updated Traffic Report
1514Grabbed MPEC 2012-U118 - Daily Orbit Update - see above
Grabbed MPEC 2012-U119 - 2012 GS5 - see above