Contents  on 19 September '13

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 19 September '13

Five objects reported inside ten LD

Five objects are reported inside ten lunar distances (LD) of Earth today. Tiny risk-listed intruder 2013 RZ53, which may be an artificial object, remains inside the Earth-Moon system until tomorrow. More distantly, 2013 RM73 is outbound from 4.94 to 6.98 LD, 2013 RF74 from 5.56 to 6.32 LD, risk-listed 2013 RS43 from 7.66 to 8.90 LD, and 2013 RT73 exits ten LD, traveling from 9.53 to 10.57 LD.

This report was generated at 1505 UTC with today's DOU MPEC carrying observation of departed 2013 QE16 from two weeks ago and of distant radar target 152664 1998 FW4.

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 19 September '13

Radar observation of three 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 2000 UTC when the database was dated 19 Sept.

Data update noted at 2317 UTC when the database was dated 19 Sept.

NEOCP Activity  on 19 September '13

The MPC's NEO Confirmation Page has 16 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had sixteen objects listed. Of these, two were "one nighters."

New MPECs  on 19 September '13

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 19 Sept. '13 >>  MPEC 2013-S23 - "06:05 UT" - Daily Orbit Update

Observers  on 19 September '13

Seven observers appear in today's MPEC.

CodeObserver / observatory
251Arecibo in Puerto Rico, 3 in radar -- 17188, 2062, 1627
U82CS3 Palmer Divide Station in southern California, 2 in MPEC 2013-S23 -- 329437, 152664
160Castelmartini Obs. in Italy, 4 in MPEC 2013-S23 -- 2013 QE16, 2013 MX5, 2010 TN54, 2009 CP5
Z81Estrella de Mar Obs., 1 in MPEC 2013-S23 -- 2013 RH74
246KLENOT in the Czech Republic, 1 in MPEC 2013-S23 -- 2013 PN43
K48Keyhole Obs., 3 in MPEC 2013-S23 -- 350988, 329437, 152664
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-S23 -- 2013 PF26
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 September '13

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 19 September '13

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

2317Noted Radar Astrometry database update - see above
2000Noted Radar Astrometry database update - see above
1505Generated Traffic Report
1501Grabbed MPEC 2013-S23 - Daily Orbit Update - see above