Neptune Trojan 2008 LC18 discovery 7 June 2008 UTC. 
Image courtesy of Scott Sheppard and Chad Trujillo.

Scott Sheppard and Chad Trujillo this week reported their discovery of the first known trailing Neptune Trojan, 2008 LC18, using the Japanense Subaru 8.3-meter telescope on Mauna Kea to watch for such objects traversing a dark dusty area against the bright galactic background. They previously discovered half of the six known Neptune leading Trojans, and predict that there are more large bodies in this L4/L5 population than in the Main Asteroid Belt. Image courtesy of the discoverers.

Contents  on 14 August '10


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.

NEOCP Activity  on 14 August '10

The MPC's NEO Confirmation Page has 6 listings: 3 new, 3 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and three updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of eight listings on the NEOCP at some point 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 14 August '10

Minor Planet Electronic Circulars

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

MPEC 2010-P62 - "18:29 UT" - 2010 PW58

<< DOU on 14 Aug. '10 >>  MPEC 2010-P61 - "06:11 UT" - Daily Orbit Update

Observers  on 14 August '10

Eleven observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPEC 2010-P61 -- 2010 PY22, 2010 OD101, 2010 OC101, 2010 NZ1, 2010 NB2, 2010 KZ117, 2010 GS7, 2005 VT5, 2004 XM130, 2002 VP69
160Castelmartini Obs. in Italy, 4 in MPEC 2010-P61 -- 2010 MF1, 2010 KZ117, 2010 FO92, 161998
157Frasso Sabino Obs. in Italy, 2 in MPEC 2010-P61 -- 2010 PY22, 2002 NE71
704LINEAR in New Mexico, 3 in MPEC 2010-P61 -- 2010 NW117, 2000 AA6, 4034
A99Monte Baldo Obs. in Italy, 2 in MPEC 2010-P61 -- 2010 PY22, 2010 PM9
B38Santa Mama Obs. in Italy, 1 in MPEC 2010-P61 -- 2009 CQ5
E12Siding Spring Survey in New South Wales, 1 in MPEC 2010-P62 -- 2010 PW58
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-P61 -- 2000 PQ27
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2010-P61 -- 2010 PD57, 2010 OB101, 2010 GH65
C51WISE in Earth polar orbit, 1 in MPEC 2010-P62 -- 2010 PW58
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2010-P61 -- 2010 ON101, 2010 FO92, 2004 FX31
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 August '10

At last check (NEODyS and JPL at 2358 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 14 August '10

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

1912Grabbed MPEC 2010-P62 - 2010 PW58 - see above
1500Grabbed MPEC 2010-P61 - Daily Orbit Update - see above