Arecibo radar April 2010 image of 2005 YU55
Credit: NASA/Cornell/Arecibo

The Cornell Chronicle reports that last month Arecibo radar found 2005 YU55 to be about 400 meters in diameter. Good to know, considering that 1) the original estimate from optical observation was on the order of 143 meters and 2) this object is coming back in 18 months, passing closer than the Moon. Fortunately, Arecibo's observations eliminated all 2005 YU55 impact possibilities for the next hundred years. Image credit: NASA/Cornell/Arecibo.


Contents  on 3 May '10

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 3 May '10

The MPC's NEO Confirmation Page has 10 listings: 10 new

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had ten new listings. Of these, four were "one nighters." So far The Tracking News has counted a total of sixteen 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 3 May '10

Minor Planet Electronic Circulars

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


MPEC 2010-J10 - "19:12 UT" - 2010 CT149


MPEC 2010-J09 - "18:34 UT" - Observations of Comets


MPEC 2010-J08 - "18:06 UT" - Comet P/2010 H2 (Vales)


MPEC 2010-J07 - "17:58 UT" - Comet C/2010 G3 (WISE)


MPEC 2010-J06 - "17:54 UT" - Comet C/2010 G2 (Hill)


MPEC 2010-J05 - "17:51 UT" - Comet C/2010 G1 (Boattini)


MPEC 2010-J04 - "17:40 UT" - Comet C/2010 A4 (Siding Spring)


<< DOU on 3 May '10 >>  MPEC 2010-J03 - "06:06 UT" - Daily Orbit Update

Observers  on 3 May '10

A total of 63 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 7 in MPECs 2010-J05 & 2010-J09 -- C/2010 G1, C/2009 R1, C/2009 K5, C/2008 FK75, C/2006 Q1, 81P, 10P
J24Altamira Obs. in Spain, 5 in MPECs 2010-J08 & 2010-J09 -- P/2010 H2, C/2008 N1, C/2005 L3, 94P, 9P
E23Arcadia Obs. in New South Wales, 1 in MPEC 2010-J03 -- 2010 EK12
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2010-J09 -- 81P, 29P
C12Berta Obs. in Spain, 4 in MPEC 2010-J09 -- C/2007 Q3-A, 81P, 74P, 29P
B75Betelgeuse Station in Italy, 1 in MPEC 2010-J09 -- C/2007 Q3-A
I99Blanquita Obs. in Spain, 4 in MPECs 2010-J03, 2010-J08 & 2010-J09 -- P/2010 H2, 2010 GU21, 2010 GA24, 74P
B96Brixiis Obs. in Belgium, 7 in MPEC 2010-J09 -- C/2009 K5, C/2008 N1, C/2008 FK75, C/2007 Q3-A, C/2005 L3, 81P, 74P
B20Carmelita Obs. in Spain, 1 in MPEC 2010-J09 -- 29P
160Castelmartini Obs. in Italy, 20 in MPECs 2010-J03, 2010-J06, 2010-J08 & 2010-J09 -- P/2010 H2, 2010 GS7, C/2010 G2, C/2010 F1, P/2010 E2, C/2009 UG89, C/2009 R1, C/2008 N1, C/2007 Q3-A, C/2006 OF2, C/2005 L3, 232382, 157P, 118P, 94P, 81P, 30P, 29P, 10P, 9P
A77Chante-Perdrix Obs. in France, 6 in MPECs 2010-J07 & 2010-J09 -- C/2010 G3, C/2009 K5, C/2006 W3, C/2006 Q1, 116P, 10P
J01Cielo Profundo Obs. in Spain, 5 in MPEC 2010-J09 -- C/2008 N1, C/2008 FK75, C/2007 Q3-A, C/2006 Q1, 94P
J36El Olivo Obs. in Spain, 6 in MPECs 2010-J08 & 2010-J09 -- P/2010 H2, C/2008 N1, C/2008 FK75, 81P, 74P, 29P
E85Farm Cove Obs. in New Zealand, 1 in MPEC 2010-J09 -- 195P
F65Faulkes Telescope North in Hawaii, 1 in MPEC 2010-J09 -- C/2009 K5
E10Faulkes Telescope South in New South Wales, 1 in MPEC 2010-J04 -- C/2010 A4
372Geisei Obs. in Japan, 8 in MPECs 2010-J06, 2010-J07, 2010-J08 & 2010-J09 -- P/2010 H2, C/2010 G3, C/2010 G2, C/2009 UG89, C/2009 K5, C/2008 FK75, C/2007 Q3-A, 116P
379Hamamatsu-Yuto Obs. in Japan, 2 in MPECs 2010-J03 & 2010-J08 -- P/2010 H2, 2010 GU21
196Homburg-Erbach Obs. in Germany, 1 in MPEC 2010-J09 -- C/2008 FK75
987Isle of Man Obs. on the Isle of Man, 2 in MPEC 2010-J09 -- P/2010 A3, 29P
585Kiev Comet Station in the Ukraine, 2 in MPEC 2010-J09 -- C/2005 L3, 30P
046Klet Obs. in the Czech Republic, 1 in MPEC 2010-J09 -- C/2010 F1
352Konan Obs. in Japan, 4 in MPEC 2010-J09 -- C/2009 K5, C/2008 FK75, 81P, 74P
D95Kurihara Obs. in Japan, 7 in MPECs 2010-J08 & 2010-J09 -- P/2010 H2, C/2009 R1, C/2009 K5, C/2007 Q3-A, 81P, 74P, 29P
J38La Vara Obs. in Spain, 3 in MPEC 2010-J09 -- C/2009 Y1, C/2007 Q3-A, 29P
B82Maidbronn Obs. in Germany, 2 in MPEC 2010-J09 -- P/2010 A2, C/2008 Q3
C10Maisoncelles Obs. in France, 2 in MPEC 2010-J09 -- C/2009 K5, 10P
J40Malaga Obs. in Spain, 3 in MPEC 2010-J09 -- C/2009 K5, C/2006 Q1, 81P
568Mauna Kea in Hawaii, 1 in MPEC 2010-J09 -- P/2009 WX51
118Modra Obs. in Slovakia, 2 in MPECs 2010-J07 & 2010-J09 -- C/2010 G3, C/2007 Q3-A
152Moletai Obs. in Lithuania, 1 in MPEC 2010-J09 -- 81P
213Montcabre Obs. in Spain, 5 in MPEC 2010-J09 -- C/2009 K5, C/2007 Q3-A, 81P, 74P, 29P
945Monte Deva Obs. in Spain, 4 in MPEC 2010-J09 -- C/2008 FK75, C/2007 Q3-A, 81P, 29P
900Moriyama Obs. in Japan, 11 in MPECs 2010-J05, 2010-J07, 2010-J08 & 2010-J09 -- P/2010 H2, C/2010 G3, C/2010 G1, P/2010 E2, P/2010 A3, C/2009 K5, C/2008 FK75, C/2007 Q3-A, C/2006 Q1, C/2005 L3, 81P
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2010-J05, 2010-J06, 2010-J07 & 2010-J09 -- C/2010 G3, C/2010 G2, C/2010 G1, C/2010 F1, 9P
A13Naef Obs. in Switzerland, 1 in MPEC 2010-J09 -- C/2009 Y1
D81Nagano Obs. in Japan, 1 in MPEC 2010-J09 -- 29P
J47Nazaret Obs. in Spain, 1 in MPEC 2010-J09 -- 29P
423North Ryde Obs. in New South Wales, 1 in MPEC 2010-J09 -- 195P
583Odessa-Mayaki Obs. in the Ukraine, 4 in MPEC 2010-J09 -- 94P, 81P, 30P, 29P
C23Olmen Obs. in Belgium, 3 in MPECs 2010-J08 & 2010-J09 -- P/2010 H2, C/2009 K5, C/2007 Q3-A
D92Osaki Obs. in Japan, 3 in MPEC 2010-J09 -- 81P, 74P, 29P
A32Panker Obs. in Germany, 1 in MPEC 2010-J09 -- 29P
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-J08 -- P/2010 H2
473Remanzacco Obs. in Italy, 1 in MPEC 2010-J09 -- 30P
J07SPAG Monfrague Obs. in Spain, 1 in MPEC 2010-J08 -- P/2010 H2
461SZTE Asteroid Program in Hungary, 3 in MPECs 2010-J06, 2010-J07 & 2010-J08 -- P/2010 H2, C/2010 G3, C/2010 G2
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2010-J09 -- 81P
204Schiaparelli Obs. in Italy, 13 in MPECs 2010-J03, 2010-J06, 2010-J07 & 2010-J09 -- 2010 HV20, 2010 GR75, C/2010 G3, C/2010 G2, 2010 FA81, 2010 EF21, 2010 EC135, C/2009 Y1, 2009 SO103, C/2007 Q3-A, 2007 JZ20, 2005 SC71, 2000 HD74
D93Sendai Obs. in Japan, 8 in MPECs 2010-J08 & 2010-J09 -- P/2010 H2, C/2008 FK75, C/2007 Q3-A, C/2005 L3, 94P, 81P, 74P, 29P
510Siegen Obs. in Germany, 2 in MPEC 2010-J09 -- C/2007 Q3-A, 81P
G68Sierra Stars Obs. in northern California, 1 in MPEC 2010-J09 -- 29P
071Smolyan Obs. in Bulgaria, 1 in MPEC 2010-J09 -- C/2007 Q3-A
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-J03 -- 237442
A71Stixendorf Obs. in Austria, 1 in MPEC 2010-J09 -- C/2009 K5
926Tenagra II Obs. in Arizona, 6 in MPEC 2010-J03 -- 2010 HV20, 2010 GT7, 2010 GS7, 2010 GO33, 2010 GJ65, 2010 FQ
H10Tzec Maun Obs. Mayhill in New Mexico, 4 in MPEC 2010-J09 -- C/2009 K5, C/2008 FK75, C/2007 Q3-A, 81P
D96Tzec Maun Obs. Moorook in South Australia, 3 in MPEC 2010-J09 -- C/2009 R1, C/2006 W3, 10P
C21Via Lactea, 3 in MPEC 2010-J09 -- C/2009 K5, C/2007 Q3-A, 81P
H47Vicksburg Obs. in Mississippi, 7 in MPECs 2010-J08 & 2010-J09 -- P/2010 H2, C/2008 FK75, C/2006 Q1, C/2005 L3, 94P, 81P, 29P
C51WISE in Earth polar orbit, 3 in MPECs 2010-J04, 2010-J09 & 2010-J10 -- 2010 CT149, C/2010 A4, C/2008 Q3
367Yatsuka Obs. in Japan, 13 in MPECs 2010-J05, 2010-J08 & 2010-J09 -- P/2010 H2, C/2010 G1, P/2010 A3, C/2009 R1, C/2009 K5, C/2007 Q3-A, C/2006 W3, 118P, 94P, 81P, 74P, 30P, 29P
A79Zvezdno Obshtestvo Obs. in Bulgaria, 3 in MPECs 2010-J07, 2010-J08 & 2010-J09 -- P/2010 H2, C/2010 G3, C/2006 Q1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 May '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 3 May '10

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

2004Grabbed MPEC 2010-J09 - Observations of Comets - see above
Grabbed MPEC 2010-J10 - 2010 CT149 - see above
1817Grabbed MPEC 2010-J04 - Comet C/2010 A4 (Siding Spring) - see above
Grabbed MPEC 2010-J05 - Comet C/2010 G1 (Boattini) - see above
Grabbed MPEC 2010-J06 - Comet C/2010 G2 (Hill) - see above
Grabbed MPEC 2010-J07 - Comet C/2010 G3 (WISE) - see above
Grabbed MPEC 2010-J08 - Comet P/2010 H2 (Vales) - see above
1343Grabbed MPEC 2010-J03 - Daily Orbit Update - see above