Contents  on 21 April '11

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.

NEOCP Activity  on 21 April '11

The MPC's NEO Confirmation Page has 4 listings: 4 new

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four new listings. All of these 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 21 April '11

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.


<< DOU on 21 Apr. '11 >>  MPEC 2011-H20 - "07:06 UT" - Daily Orbit Update


MPEC 2011-H19 - "01:11 UT" - 2004 KD19 and 2004 OP15

Observers  on 21 April '11

Eighteen observers appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 2 in MPEC 2011-H20 -- 2011 GM62, 2011 GH62
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPEC 2011-H20 -- 2011 GR59, 2011 GQ59, 2011 GK44
160Castelmartini Obs. in Italy, 15 in MPEC 2011-H20 -- 2011 GM62, 2011 EZ78, 2011 EM51, 2011 DS9, 2004 FG1, 2002 TD60, 274138, 271480, 263976, 260141, 256412, 250614, 23187, 162463, 141525
3092Brett Gladman via Cerro Paranal in Chile, 1 in MPEC 2011-H19 -- 2004 KD19
807|Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 14 in MPEC 2011-H20 -- 2011 GS60, 2011 GQ65, 2011 GM44, 2011 GF, 2011 GC60, 2011 GA62, 2011 FY2, 2011 FB29, 2011 EW29, 2011 DV, 2011 CG2, 2011 AO52, 2005 LY19, 2004 GY
J18Churchstoke Obs. in Wales, 4 in MPEC 2011-H20 -- 2011 GS60, 2011 GR59, 2011 GD68, 2011 GC62
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 3 in MPEC 2011-H20 -- 2011 GM62, 2011 GL62, 2011 GC60
151Eschenberg Obs. in Switzerland, 1 in MPEC 2011-H20 -- 274138
J95Great Shefford Obs. in England, 1 in MPEC 2011-H20 -- 2011 GM62
A17Guidestar Obs. in Germany, 5 in MPEC 2011-H20 -- 2011 GQ65, 2011 GQ59, 2011 GM62, 2011 GH62, 2011 EZ78
6958J.W. Parker via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPEC 2011-H19 -- 2004 OP15, 2004 KD19
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2011-H20 -- 2011 EO40, 2011 EJ47
568{JJ Kavelaars on Mauna Kea in Hawaii, 2 in MPEC 2011-H19 -- 2004 OP15, 2004 KD19
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2011-H20 -- 271480
557Ondrejov Obs. in the Czech Republic, 1 in MPEC 2011-H20 -- 274138
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2011-H20 -- 145656
J52Pinsoro Obs. in Spain, 1 in MPEC 2011-H20 -- 274138
C36Starry Wanderer Obs., 2 in MPEC 2011-H20 -- 163250, 137170
C51WISE in Earth polar orbit, 8 in MPEC 2011-H20 -- 2010 FQ, 2010 FG81, 2010 FA81, 2010 EX11, 2010 DW1, 2010 CO1, 2009 SX1, 1996 GQ
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 21 April '11

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 21 April '11

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

2320Noted that the NEOCP has become active
1605Grabbed MPEC 2011-H20 - Daily Orbit Update - see above
0119Grabbed MPEC 2011-H19 - 2004 KD19 and 2004 OP15 - see above