Contents  on 9 September '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 9 September '11

The MPC's NEO Confirmation Page has 4 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four objects listed. Of these, two 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 9 September '11

Minor Planet Electronic Circulars

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


MPEC 2011-R35 - "21:56 UT" - Observations and Orbits of Comets


MPEC 2011-R34 - "13:55 UT" - Comet P/2011 R3 (Novichonok)


<< DOU on 9 Sept. '11 >>  MPEC 2011-R33 - "06:09 UT" - Daily Orbit Update

Observers  on 9 September '11

A total of 67 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 7 in MPEC 2011-R35 -- C/2011 O1, C/2011 A3, P/2010 JC81, C/2009 P1, C/2008 S3, C/2006 S3, 213P
I08Alianza S4 Obs. in Argentina, 2 in MPECs 2011-R33 & 2011-R35 -- 2011 RJ1, P/2011 N1
J24Altamira Obs. in the Canary Islands, 1 in MPEC 2011-R35 -- C/2010 S1
A50Andrushivka Obs. in the Ukraine, 2 in MPECs 2011-R33 & 2011-R35 -- 274855, 213P
C07Anysllum Obs. in Spain, 1 in MPEC 2011-R35 -- C/2009 P1
H21Astronomical Research Obs. Westfield in Illinois, 18 in MPEC 2011-R33 -- 2011 RH1, 2011 RF, 2011 QZ13, 2011 QS49, 2011 QS2, 2011 QF23, 2011 QF14, 2011 QE48, 2011 QE38, 2011 QD48, 2011 PF2, 2011 OV4, 2011 OQ5, 2011 OM5, 2011 OC18, 2011 NZ, 2011 MV1, 2011 HD63
I74Baxter Garden Obs., 1 in MPEC 2011-R35 -- C/2009 P1
I99Blanquita Obs. in Spain, 6 in MPECs 2011-R33 & 2011-R35 -- C/2009 Y1, C/2009 P1, 39572, 213P, 130P, 78P
B59Borken Obs. in Germany, 1 in MPEC 2011-R35 -- C/2010 S1
B96Brixiis Obs. in Belgium, 1 in MPEC 2011-R35 -- C/2009 P1
B66Casasco Obs. in Italy, 1 in MPEC 2011-R35 -- C/2009 P1
E00Castlemaine Obs. in Victoria, 2 in MPEC 2011-R35 -- C/2011 Q4, C/2011 Q2
807|Robert Holmes via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2011-R35 -- P/2011 R2
J01Cielo Profundo Obs. in Spain, 5 in MPEC 2011-R35 -- C/2011 R1, C/2010 S1, C/2010 G2, 213P, 78P
C13Como Obs. in Italy, 1 in MPEC 2011-R35 -- C/2009 P1
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2011-R33 & 2011-R35 -- 2011 QS49, 65P
B50Corner Obs. in Germany, 2 in MPEC 2011-R35 -- C/2009 P1, 213P
958Dax Obs. in France, 21 in MPEC 2011-R35 -- P/2011 R2, C/2011 R1, C/2011 L3, C/2011 F1, C/2011 A3, C/2010 S1, C/2010 R1, C/2010 G2, C/2009 Y1, C/2009 P1, C/2008 S3, C/2008 FK75, C/2007 Q3, C/2006 S3, 213P, 130P, 78P, 65P, 49P, 48P, 9P
113Drebach Obs. in Germany, 1 in MPEC 2011-R35 -- C/2009 P1
I70Edney House Obs., 1 in MPEC 2011-R33 -- 1917
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2011-R35 -- P/2011 R3
E85Farm Cove Obs. in New Zealand, 1 in MPEC 2011-R35 -- 158P
F65$Ernesto Guido in Italy via Faulkes Telescope North in Hawaii, 1 in MPEC 2011-R34 -- P/2011 R3
E10Faulkes Telescope South in New South Wales, 4 in MPEC 2011-R35 -- P/2011 N1, C/2009 Y1, 213P, 78P
157Frasso Sabino Obs. in Italy, 1 in MPEC 2011-R35 -- 158P
203GiaGa Obs. in Italy, 1 in MPEC 2011-R35 -- 213P
E94Gisborne Obs. in New Zealand, 1 in MPEC 2011-R35 -- C/2011 Q2
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2011-R35 -- C/2009 P1
H15ISON-NM Obs. in New Mexico, 3 in MPECs 2011-R33, 2011-R34 & 2011-R35 -- P/2011 R3, 2011 QF14, 164P
C32Ka-Dar Obs. TAU Station in Russia, 3 in MPECs 2011-R34 & 2011-R35 -- P/2011 R3, P/2010 JC81, 9P
585Kiev Comet Station in the Ukraine, 9 in MPEC 2011-R35 -- C/2011 L3, C/2011 A3, C/2009 Y1, 213P, 130P, 115P, 78P, 65P, 9P
C04Kramatorsk Obs. in the Ukraine, 1 in MPEC 2011-R35 -- 78P
D95Kurihara Obs. in Japan, 7 in MPEC 2011-R35 -- C/2011 F1, C/2011 A3, C/2010 S1, C/2009 Y1, 213P, 130P, 78P
J31La Axarquia Obs. in Spain, 3 in MPEC 2011-R35 -- C/2009 P1, 213P, 78P
212La Dehesilla Obs. in Spain, 12 in MPEC 2011-R35 -- C/2011 A3, C/2010 R1, C/2009 Y1, C/2009 P1, C/2006 S3, 213P, 158P, 130P, 78P, 74P, 48P, 9P
J75La Sagra Obs. in Spain, 1 in MPEC 2011-R35 -- 36P
J38La Vara Obs. in Spain, 10 in MPEC 2011-R35 -- C/2009 Y1, C/2009 P1, C/2008 FK75, C/2006 S3, 213P, 131P, 78P, 48P, 21P, 9P
D35Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2011-R35 -- C/2011 R1
C10Maisoncelles Obs. in France, 6 in MPEC 2011-R35 -- C/2009 P1, 213P, 176P, 97P, 49P, 9P
J40Malaga Obs. in Spain, 4 in MPEC 2011-R35 -- C/2009 P1, 213P, 78P, 65P
213Montcabre Obs. in Spain, 1 in MPEC 2011-R35 -- C/2009 P1
945Monte Deva Obs. in Spain, 7 in MPEC 2011-R35 -- C/2010 S1, C/2010 G2, C/2009 P1, C/2008 S3, C/2008 FK75, C/2006 S3, 78P
474Mt. John Obs. in New Zealand, 3 in MPEC 2011-R35 -- C/2011 Q3, C/2011 O1, C/2011 N2
J47Nazaret Obs. in Spain, 2 in MPEC 2011-R35 -- C/2009 P1, 213P
I89Nerpio Obs. in Italy, 1 in MPEC 2011-R35 -- P/2011 R2
A24New Millennium Obs. in Italy, 3 in MPEC 2011-R33 -- 2011 KN9, 2000 CP101, 4596
C47Nonndorf Obs., 2 in MPEC 2011-R35 -- C/2010 S1, 78P
C23Olmen Obs. in Belgium, 3 in MPEC 2011-R35 -- C/2009 P1, 213P, 78P
F51Pan-STARRS 1 (PS1) in Hawaii, 24 in MPECs 2011-R33 & 2011-R35 -- 2011 OX4, 2011 EZ40, 2009 QZ6, 2008 VH, 2008 RG98, 2008 CM, 2006 SU49, 2005 TR15, 2004 QB17, 2001 BZ39, 2000 DQ110, 90416, 90147, 85804, 276274, 274855, 24475, 221787, 190491, 7341, 3553, 213P, 131P, 78P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2011-R35 -- C/2009 P1, 213P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 7 in MPECs 2011-R34 & 2011-R35 -- P/2011 R3, C/2011 L4, P/2011 JB15, C/2006 S3, 115P, 81P, 9P
I91Retamar Obs., 1 in MPEC 2011-R35 -- 78P
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2011-R33 -- 2011 QY39
H36Sandlot Obs. in Kansas, 1 in MPEC 2011-R34 -- P/2011 R3
C71Sant Marti Sesgueioles Obs., 1 in MPEC 2011-R35 -- C/2011 L3
E12Siding Spring Survey (SSS) in New South Wales, 7 in MPECs 2011-R33 & 2011-R35 -- 2011 QE48, C/2011 Q4, C/2011 Q2, C/2010 X1, 2007 SP6, 54789, 205378
510Siegen Obs. in Germany, 4 in MPEC 2011-R35 -- C/2009 P1, C/2008 FK75, C/2006 S3, 213P
645Sloan Digital Sky Survey (SDSS) in New Mexico, 4 in MPEC 2011-R33 -- 138971, 136795, 136617, 13651
691Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2011-R33 & 2011-R35 -- 155110, 5653, 36P
291Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2011-R33 & 2011-R34 -- P/2011 R3, 2011 QY11, 2011 QA14, 2011 PE2, 2011 JK, 2005 EY223, 2004 VB, 2004 RU331
A97Stammersdorf Obs. in Austria, 1 in MPEC 2011-R35 -- C/2009 P1
A98Taurus-1 Obs. in Belarus, 1 in MPEC 2011-R35 -- C/2010 S1
B18Terskol Obs. in Russia, 1 in MPEC 2011-R34 -- P/2011 R3
A48Verona Obs. in Italy, 1 in MPEC 2011-R33 -- 2011 OV4
H47Vicksburg Obs. in Mississippi, 11 in MPEC 2011-R35 -- P/2011 R2, C/2011 L3, C/2009 Y1, C/2009 P1, C/2006 S3, 213P, 130P, 78P, 65P, 49P, 9P
B42Vitebsk Obs. in Belarus, 5 in MPEC 2011-R35 -- C/2011 Q1, C/2009 P1, 213P, 78P, 36P
367Yatsuka Obs. in Japan, 1 in MPEC 2011-R35 -- C/2011 R1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 September '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 PE2JPL Sentry15172027-210239.3e-05-2.66-2.660JPL: "Analysis based on 83 observations spanning 32.140 days (2011-Aug-08.06387 to 2011-Sep-09.20343)." Diameter approximately 0.083 km. from mean, weighted H=23.0.
NEODyS15172027-209037.21e-06-3.77-3.770NEODyS: "Based on 83 optical observations (of which 0 are rejected as outliers) from 2011-08-08.065 to 2011-09-09.204."

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 9 September '11

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

2206Grabbed MPEC 2011-R35 - Observations and Orbits of Comets - see above
1517Noted that JPL Sentry has updated its 2011 PE2 risk assessment - see above
Noted that NEODyS has updated its 2011 PE2 risk assessment - see above
Grabbed MPEC 2011-R33 - Daily Orbit Update - see above
Grabbed MPEC 2011-R34 - Comet P/2011 R3 (Novichonok) - see above