Contents  on 8 July '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 8 July '11

The MPC's NEO Confirmation Page has 3 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three objects listed. All of these were "one nighters." So far The Tracking News has counted a total of five 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 8 July '11

Minor Planet Electronic Circulars

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


MPEC 2011-N35 - "23:39 UT" - 2006 BR284 and 2006 JZ81


MPEC 2011-N34 - "20:10 UT" - Observations and Orbits of Comets


MPEC 2011-N33 - "19:56 UT" - 2011 NZ


<< DOU on 8 July '11 >>  MPEC 2011-N32 - "07:07 UT" - Daily Orbit Update

Observers  on 8 July '11

A total of 52 observers appear in today's MPECs.

CodeObserver / observatory
B54Ager Obs. in Spain, 2 in MPEC 2011-N34 -- C/2010 R1, C/2007 Q3
J97Alginet Obs. in Spain, 3 in MPEC 2011-N34 -- C/2011 A3, C/2006 S3, 115P
7057Krisztian Sarneczky via Apache Point Obs. in New Mexico, 2 in MPEC 2011-N32 -- 2008 BT18, 2005 JT81
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPEC 2011-N32 -- 2011 NV, 2011 MW2, 2011 MQ3, 2011 MO4, 2011 MN4, 2011 ME, 2011 MD5, 2011 LK19, 2011 AG5, 2004 LJ, 1984 QY1
I99Blanquita Obs. in Spain, 3 in MPEC 2011-N34 -- C/2011 L3, C/2009 P1, 115P
B96Brixiis Obs. in Belgium, 5 in MPEC 2011-N34 -- C/2011 L3, C/2010 R1, C/2009 P1, C/2008 FK75, C/2006 S3
G51Byrne Obs., 1 in MPEC 2011-N32 -- 2011 NY
235CAST Obs. in Italy, 2 in MPEC 2011-N34 -- C/2011 A3, 115P
B66Casasco Obs. in Italy, 1 in MPEC 2011-N34 -- C/2009 P1
703Catalina Sky Survey in Arizona, 1 in MPEC 2011-N34 -- 45P
807,Ovidiu Vaduvescu via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2011-N32 -- 2009 BE81
807-program code "-" (22) via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2011-N35 -- 2006 JZ81
807|Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 8 in MPEC 2011-N32 -- 2011 NP, 2011 MY2, 2011 MO4, 2011 ME5, 2011 MD5, 2011 LH, 2011 KF4, 2011 HQ
A77Chante-Perdrix Obs. in France, 14 in MPEC 2011-N34 -- C/2011 L3, C/2011 C1, C/2010 R1, C/2009 Y1, C/2009 P2, C/2009 P1, C/2007 Q3, 213P, 158P, 131P, 115P, 78P, 36P, 21P
J01Cielo Profundo Obs. in Spain, 1 in MPEC 2011-N34 -- 115P
958Dax Obs. in France, 21 in MPEC 2011-N34 -- C/2011 L3, C/2011 L1, C/2011 F1, C/2011 A3, C/2010 X1, C/2010 S1, C/2010 R1, C/2009 Y1, C/2009 UG89, C/2009 S3, C/2009 P1, C/2008 S3, C/2008 FK75, C/2007 VO53, C/2007 Q3, C/2006 S3, 240P, 213P, 115P, 48P, 29P
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2011-N34 -- C/2009 P1
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 1 in MPEC 2011-N34 -- C/2011 L4
157Frasso Sabino Obs. in Italy, 4 in MPECs 2011-N32 & 2011-N34 -- C/2011 M1, C/2011 L3, 2005 JA22, 280136
372Geisei Obs. in Japan, 3 in MPEC 2011-N34 -- C/2010 X1, 29P, 27P
B83Gieres Obs. in France, 1 in MPEC 2011-N34 -- C/2011 A3
585Kiev Comet Station in the Ukraine, 7 in MPEC 2011-N34 -- C/2011 L3, C/2011 A3, C/2010 R1, C/2009 P1, C/2006 S3, 115P, 48P
6953program code 3 via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2011-N35 -- 2006 JZ81
6959Joel Parker via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPEC 2011-N35 -- 2006 JZ81, 2006 BR284
D95Kurihara Obs. in Japan, 5 in MPEC 2011-N34 -- C/2011 F1, C/2011 C1, C/2010 X1, C/2010 G2, 27P
704LINEAR in New Mexico, 5 in MPECs 2011-N32 & 2011-N34 -- 2003 BK47, 274855, 174050, 7482, 78P
J31La Axarquia Obs. in Spain, 1 in MPEC 2011-N34 -- C/2009 P1
844Los Molinos Obs. in Uruguay, 2 in MPECs 2011-N33 & 2011-N34 -- 2011 NZ, 115P
C10Maisoncelles Obs. in France, 11 in MPEC 2011-N34 -- C/2011 M1, C/2011 L3, C/2010 R1, C/2009 S3, C/2008 FK75, C/2006 S3, 213P, 131P, 78P, 48P, 45P
J40Malaga Obs. in Spain, 2 in MPEC 2011-N34 -- C/2011 L3, C/2009 P1
568{JJ Kavelaars on Mauna Kea in Hawaii, 1 in MPEC 2011-N35 -- 2006 BR284
568|program code "|" (32) on Mauna Kea in Hawaii, 2 in MPEC 2011-N35 -- 2006 JZ81, 2006 BR284
213Montcabre Obs. in Spain, 4 in MPEC 2011-N34 -- C/2011 L4, C/2011 L3, C/2009 P1, 213P
945Monte Deva Obs. in Spain, 4 in MPEC 2011-N34 -- C/2011 A3, C/2010 G2, C/2009 P1, C/2006 S3
6758Brett Gladman via Mt. Palomar in southern California, 2 in MPEC 2011-N35 -- 2006 JZ81, 2006 BR284
A13Naef Obs. in Switzerland, 1 in MPEC 2011-N34 -- C/2007 Q3
D81Nagano Obs. in Japan, 2 in MPEC 2011-N34 -- C/2011 L3, C/2009 P1
J47Nazaret Obs. in Spain, 1 in MPEC 2011-N34 -- 115P
C47Nonndorf Obs., 1 in MPEC 2011-N32 -- 2011 EZ78
C23Olmen Obs. in Belgium, 3 in MPEC 2011-N34 -- C/2011 L3, C/2011 F1, 213P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2011-N34 -- C/2011 L3, C/2009 P1, C/2006 S3, 213P
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 15 in MPECs 2011-N32, 2011-N33 & 2011-N34 -- 2011 NZ, 2011 NY, C/2011 M1, C/2011 L6, C/2011 L3, C/2011 J3, C/2011 C1, C/2010 X1, C/2010 A4, C/2009 F2, C/2005 L3, 81P, 65P, 45P, 27P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2011-N33 -- 2011 NZ
E03`Kevin Hills in England via RAS Obs. Victoria in Victoria, 1 in MPEC 2011-N34 -- C/2009 F4
473Remanzacco Obs. in Italy, 1 in MPEC 2011-N34 -- C/2008 FK75
C09Rouet Obs. in France, 4 in MPEC 2011-N34 -- C/2011 L3, C/2009 P1, 213P, 78P
461SZTE Asteroid Program in Hungary, 1 in MPEC 2011-N34 -- C/2009 P1
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2011-N34 -- C/2011 L1
233San Vito Obs. in Italy, 1 in MPEC 2011-N34 -- C/2009 UG89
H36Sandlot Obs. in Kansas, 1 in MPEC 2011-N33 -- 2011 NZ
204Schiaparelli Obs. in Italy, 1 in MPEC 2011-N34 -- C/2011 M1
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPECs 2011-N32 & 2011-N33 -- 2011 NZ, 2009 UX19
G68Sierra Stars Obs. in northern California, 3 in MPEC 2011-N34 -- C/2009 P1, C/2006 S3, 78P
A71Stixendorf Obs. in Austria, 3 in MPEC 2011-N34 -- C/2011 L3, C/2009 P1, 27P
B51Vallauris Obs. in France, 7 in MPEC 2011-N34 -- C/2011 L3, C/2010 R1, C/2009 P1, C/2006 S3, 213P, 115P, 45P
H47Vicksburg Obs. in Mississippi, 4 in MPEC 2011-N34 -- C/2011 L3, C/2009 P1, C/2006 S3, 48P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 8 July '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 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 AG5JPL Sentry16162040-204753.9e-04-1.72-1.731JPL: "Analysis based on 175 observations spanning 180.06 days (2011-Jan-08.2673 to 2011-Jul-07.329496)." Diameter approximately 0.150 km. from mean, weighted H=21.8.
NEODyS16162040-205191.0e-03-1.32-1.321NEODyS: "Based on 175 optical observations (of which 0 are rejected as outliers) from 2011-01-08.268 to 2011-07-07.330."

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 8 July '11

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

2359Grabbed MPEC 2011-N35 - 2006 BR284 and 2006 JZ81 - see above
2105Grabbed MPEC 2011-N34 - Observations and Orbits of Comets - see above
2004Grabbed MPEC 2011-N33 - 2011 NZ - see above
1616Noted that JPL Sentry has updated its 2011 AG5 risk assessment - see above
Noted that NEODyS has updated its 2011 AG5 risk assessment - see above
Grabbed MPEC 2011-N32 - Daily Orbit Update - see above