Contents  on 14 May '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 14 May '11

The MPC's NEO Confirmation Page has 15 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had fifteen objects listed. Of these, five were "one nighters." So far The Tracking News has counted a total of eighteen listings on the NEOCP 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 May '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.


MPEC 2011-J52 - "19:07 UT" - Observations and Orbits of Comets


<< DOU on 14 May '11 >>  MPEC 2011-J51 - "07:10 UT" - Daily Orbit Update

Observers  on 14 May '11

A total of 48 observers appear in today's MPECs.

CodeObserver / observatory
467Auckland Obs. in New Zealand, 1 in MPEC 2011-J52 -- C/2010 X1
A81Balzaretto Obs. in Italy, 1 in MPEC 2011-J52 -- C/2010 X1
215Buchloe Obs. in Germany, 4 in MPEC 2011-J52 -- C/2011 J2, C/2011 G1, 115P, 29P
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2011-J51 & 2011-J52 -- 2011 JR13, C/2007 VO53, 274138, 251346, 248590, 20086, 8567, 103P
807|Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 8 in MPEC 2011-J51 -- 2011 JU2, 2011 JR13, 2011 JD1, 2011 JB10, 2011 HP, 2011 HO5, 2011 HH, 2011 GA62
A77Chante-Perdrix Obs. in France, 1 in MPEC 2011-J52 -- 29P
958Dax Obs. in France, 16 in MPEC 2011-J52 -- C/2011 F1, C/2011 A3, C/2010 X1, C/2010 J2, C/2009 UG89, C/2009 F2, C/2007 VO53, C/2007 Q3, C/2006 S3, C/2005 L3, 240P, 123P, 115P, 73P, 43P, 29P
448Desert Moon Obs. in New Mexico, 5 in MPEC 2011-J51 -- 2011 HT, 2011 HP, 2011 HO, 2011 HL7, 2011 BJ2
J19El Maestrat Obs. in Spain, 1 in MPEC 2011-J52 -- C/2009 UG89
372Geisei Obs. in Japan, 1 in MPEC 2011-J52 -- C/2011 C1
I82Guimar Obs., 2 in MPEC 2011-J52 -- C/2010 X1, 29P
A21Irmtraut Obs. in Germany, 3 in MPEC 2011-J52 -- C/2011 A3, C/2010 X1, 29P
585Kiev Comet Station in the Ukraine, 2 in MPEC 2011-J52 -- 71P, 29P
D95Kurihara Obs. in Japan, 2 in MPEC 2011-J52 -- C/2011 F1, C/2009 UG89
704LINEAR in New Mexico, 2 in MPEC 2011-J52 -- C/2009 UG89, 71P
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 2 in MPEC 2011-J51 -- 2011 JB10, 2011 GX65
130Lumezzane Obs. in Italy, 1 in MPEC 2011-J52 -- C/2009 F2
C10Maisoncelles Obs. in France, 4 in MPEC 2011-J52 -- C/2009 P1, C/2006 S3, 115P, 74P
A01Masia Cal Maciarol Modul 1 in Spain, 1 in MPEC 2011-J52 -- 29P
213Montcabre Obs. in Spain, 1 in MPEC 2011-J52 -- 29P
945Monte Deva Obs. in Spain, 2 in MPEC 2011-J52 -- 123P, 29P
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2011-J51 & 2011-J52 -- P/2011 A2, C/2006 S3, 5011, 4257, 227P
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2011-J52 -- P/2004 HC18
D81Nagano Obs. in Japan, 1 in MPEC 2011-J52 -- C/2010 G2
J47Nazaret Obs. in Spain, 2 in MPEC 2011-J52 -- C/2010 X1, C/2009 F2
A24New Millennium Obs. in Italy, 7 in MPEC 2011-J52 -- C/2011 F1, C/2011 A3, C/2010 X1, C/2010 G2, C/2009 UG89, 71P, 29P
583Odessa-Mayaki Obs. in the Ukraine, 2 in MPEC 2011-J51 -- 274138, 164121
C23Olmen Obs. in Belgium, 3 in MPEC 2011-J52 -- C/2011 A3, C/2010 G2, C/2009 UG89
B49Paus Obs. in Spain, 2 in MPEC 2011-J52 -- C/2011 A3, C/2009 UG89
941Pla D'Arguines Obs. in Spain, 2 in MPEC 2011-J52 -- C/2007 Q3, C/2007 M1
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 15 in MPEC 2011-J52 -- C/2011 H1, C/2011 C1, C/2011 A3, C/2009 Y1, C/2009 P1, C/2008 FK75, C/2007 VO53, C/2006 S3, 240P, 213P, 130P, 78P, 48P, 37P, 31P
E03`Kevin Hills in England via RAS Obs. Victoria in Victoria, 4 in MPEC 2011-J52 -- C/2011 C3, C/2009 F4, C/2007 S2, 130P
473Remanzacco Obs. in Italy, 1 in MPEC 2011-J52 -- 29P
939Rodeno Obs. in Spain, 5 in MPEC 2011-J52 -- C/2011 A3, C/2010 X1, C/2006 S3, 213P, 29P
104San Marcello Pistoiese Obs. in Italy, 7 in MPEC 2011-J52 -- C/2011 F1, C/2011 A3, C/2010 X1, C/2009 UG89, C/2007 Q3, C/2006 S3, 115P
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2011-J52 -- C/2010 X1
510Siegen Obs. in Germany, 2 in MPEC 2011-J52 -- C/2011 F1, C/2011 A3
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2011-J51 -- 1866
291Spacewatch 1.8m telescope in Arizona, 2 in MPEC 2011-J51 -- 2009 JO2, 2007 XC10
I93St. Pardon de Conques Obs. in France, 3 in MPEC 2011-J52 -- C/2009 UG89, C/2007 VO53, 21P
A71Stixendorf Obs. in Austria, 10 in MPEC 2011-J52 -- C/2011 C1, C/2011 A3, C/2010 X1, C/2010 G2, C/2009 Y1, C/2009 UG89, C/2008 FK75, C/2007 VO53, 115P, 29P
I40TRAPPIST in Chile, 11 in MPEC 2011-J52 -- C/2011 C3, C/2011 C1, P/2011 A2, C/2010 X1, C/2010 FB87, C/2010 B1, C/2006 W3, 103P, 43P, 29P, 9P
I81Tarbatness Obs., 5 in MPEC 2011-J52 -- C/2011 A3, C/2010 X1, C/2010 G2, C/2005 L3, 240P
926Tenagra II Obs. in Arizona, 1 in MPEC 2011-J51 -- 20086
H10Tzec Maun Obs. Mayhill in New Mexico, 7 in MPEC 2011-J52 -- C/2011 H1, C/2011 G1, C/2011 A3, C/2010 X1, C/2008 FK75, 240P, 29P
D96Tzec Maun Obs. Moorook in South Australia, 2 in MPEC 2011-J52 -- C/2010 X1, C/2009 F4
B51Vallauris Obs. in France, 2 in MPEC 2011-J52 -- C/2010 X1, 29P
198Wildberg Obs. in Germany, 1 in MPEC 2011-J52 -- 21P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 May '11

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2011 HO5JPL Sentry15522079-209563.1e-06-5.47-5.500JPL: "Analysis based on 54 observations spanning 15.947 days (2011-Apr-27.39956 to 2011-May-13.34699)." Diameter approximately 0.049 km. from mean, weighted H=24.2.
NEODyS15522065-209053.31e-06-5.44-5.440NEODyS: "Based on 54 optical observations (of which 0 are rejected as outliers) from 2011-04-27.400 to 2011-05-13.348."

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology  on 14 May '11

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

1922Grabbed MPEC 2011-J52 - Observations and Orbits of Comets - see above
1552Noted that JPL Sentry has updated its 2011 HO5 risk assessment - see above
Noted that NEODyS has updated its 2011 HO5 risk assessment - see above
Grabbed MPEC 2011-J51 - Daily Orbit Update - see above