Contents  on 27 July '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 27 July '12

Two objects reported inside ten LD

Two objects are reported to be inside ten lunar distances (LD) of Earth today. 2012 OU1 is outbound from 8.84 to 9.82 LD and 2012 OQ leaves the ten-LD "bubble," traveling from 9.84 to 11.76 LD. No other objects are known to come this close until November.

This report was updated at 1836 UTC with follow-up in today's radar for 2012 OQ and, earlier, optical follow-up in today's DOU MPEC for that asteroid and 2012 OU1. Today's first traffic report was generated at 1542 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 27 July '12

Radar observation of two objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 1833 UTC when the database was dated 27 July

NEOCP Activity  on 27 July '12

The MPC's NEO Confirmation Page has 2 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two objects listed.

New MPECs  on 27 July '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-O38 - "11:12 UT" - 2005 YO180


<< DOU on 27 July '12 >>  MPEC 2012-O37 - "06:02 UT" - Daily Orbit Update

Observers  on 27 July '12

Sixteen observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 17 in MPEC 2012-O37 -- 2012 OQ, 2012 OO, 2012 OE1, 2012 OD1, 2012 OB1, 2012 OA1, 2012 NQ, 2012 NP, 2012 NO, 2012 NN, 2012 MV4, 2012 MU2, 2012 MQ3, 2012 LZ1, 2012 LE11, 2012 KU42, 2012 HR2
C77Bernezzo Obs. in Italy, 1 in MPEC 2012-O37 -- 2012 OQ
470Ceccano Obs. in Italy, 1 in MPEC 2012-O37 -- 2012 OQ
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 11 in MPEC 2012-O37 -- 2012 OU1, 2012 OE1, 2012 OC1, 2012 OB1, 2012 KL18, 2012 JW11, 2012 GX11, 2012 CC17, 197588, 162900, 159635
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 6 in MPEC 2012-O37 -- 2012 NP, 2012 NN, 2012 LE11, 2012 KJ18, 2012 JR17, 2012 FY23
253Goldstone DSS-14 70m antenna in southern California, 2 in radar -- 2012 OQ, 2006 CF
A17Guidestar Obs. in Germany, 6 in MPEC 2012-O37 -- 2012 NP, 330825, 277830, 277475, 138847, 4581
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-O38 -- 2005 YO180
B67Mirasteilas Obs. in Switzerland, 6 in MPEC 2012-O37 -- 2012 OD1, 2012 OB1, 2012 OA1, 2006 WN1, 2005 UC, 2001 QG142
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 10 in MPEC 2012-O37 -- 2012 OO, 2012 OD1, 2012 OA1, 2012 NP, 2012 MK6, 2012 LE11, 2012 BC20, 2011 UL21, 2010 OS22, 2006 DQ62
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2012-O37 -- 2012 OU1
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2012-O37 -- 2000 EA14
B38Santa Mama Obs. in Italy, 4 in MPEC 2012-O37 -- 2012 HG31, 85818, 326732, 5587
510Siegen Obs. in Germany, 2 in MPEC 2012-O37 -- 2012 OQ, 4179
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2012-O37 -- 2011 GQ61, 2005 PO, 2000 RD53
718Wiggins Obs. in Utah, 2 in MPEC 2012-O37 -- 2012 OQ, 2012 OO
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 27 July '12

At last check (NEODyS at 2249, 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 27 July '12

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

1836Updated Traffic Report
1833Noted Radar Astrometry database update - see above
1541Grabbed MPEC 2012-O37 - Daily Orbit Update - see above
Grabbed MPEC 2012-O38 - 2005 YO180 - see above
Noted that the NEOCP has become active