Fast-rotating 2010 WA caught on Nov. 16th by 
Magdalena Ridge Obs. as it narrowly missed Earth.

New Mexico Tech reported early this month that the fast-slewing 2.4-meter telescope and its specialized camera at Magdalena Ridge Observatory (MRO) discovered a rotation period of about 31 seconds for tiny intruder 2010 WA. This is second only to 2010 JL88, which MRO determined last May spins once every 24.5 seconds. In this imagery, courtesy of NMT, 2010 WA was near its closest to Earth on November 16th -- at about 29,000 km. or 0.1 lunar distance. (Photometric work such as this may not serve astrometric purposes, and MRO was not among the three facilities that reported positions over a total observing span of less than 21 hours.)

Contents  on 20 December '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 20 December '10

The MPC's NEO Confirmation Page has 1 listing: 1 new

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new listing. So far The Tracking News has counted a total of two 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 20 December '10

Minor Planet Electronic Circulars

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

<< DOU on 20 Dec. '10 >>  MPEC 2010-Y19 - "07:13 UT" - Daily Orbit Update

Observers  on 20 December '10

Five observers appear in today's MPEC.

CodeObserver / observatory
J24Altamira Obs. in the Canary Islands, 1 in MPEC 2010-Y19 -- 3838
H21Astronomical Research Obs. Westfield in Illinois, 30 in MPEC 2010-Y19 -- 2010 YB, 2010 XX58, 2010 XT45, 2010 XO56, 2010 XO10, 2010 XG3, 2010 XE11, 2010 XD25, 2010 XC24, 2010 XC15, 2010 WQ7, 2010 WP8, 2010 WL, 2010 WJ, 2010 WH, 2010 SD13, 2010 RN80, 2010 NW117, 2010 LR68, 2010 LR33, 2010 LF86, 2010 JL33, 2006 WY2, 2006 VB14, 2005 WE, 2005 GC120, 2005 CF41, 2001 VB2, 2000 AC6, 1997 XS2
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2010-Y19 -- 2010 JL33
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2010-Y19 -- 2010 JL33
704LINEAR in New Mexico, 2 in MPEC 2010-Y19 -- 2010 TP54, 2002 OS4
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 December '10

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 20 December '10

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

1658Grabbed MPEC 2010-Y19 - Daily Orbit Update - see above