Contents  on 20 August '09

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 20 August '09

The MPC's NEO Confirmation Page has 2 listings: 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of six 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 20 August '09

Minor Planet Electronic Circulars

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


MPEC 2009-Q35 - "23:02 UT" - 2009 QE8


MPEC 2009-Q34 - "14:42 UT" - 2008 SO218


MPEC 2009-Q33 - "12:26 UT" - 2009 QZ6


MPEC 2009-Q32 - "12:23 UT" - 2009 QY6


<< DOU on 20 Aug. '09 >>  MPEC 2009-Q31 - "06:08 UT" - Daily Orbit Update


MPEC 2009-Q30 - "01:25 UT" - 2009 QJ6


MPEC 2009-Q29 - "00:05 UT" - 2006 WN1

Observers  on 20 August '09

A total of 38 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 7 in MPECs 2009-Q31 & 2009-Q33 -- 2009 QZ6, 2009 QS, 2009 QL2, 2009 QH6, 2009 QH2, 2009 QG2, 2009 QC
A81Balzaretto Obs. in Italy, 3 in MPEC 2009-Q31 -- 2009 QH2, 2009 QG2, 2009 OG
B75Betelgeuse Station in Italy, 3 in MPEC 2009-Q31 -- 2009 OC, 163697, 1943
B88Bigmuskie Obs. in Italy, 2 in MPEC 2009-Q31 -- 52387, 11500
432Boambee Obs. in New South Wales, 7 in MPEC 2009-Q31 -- 2002 LV, 52762, 24761, 212546, 162483, 15745, 5620
J05Bootes Obs., 2 in MPEC 2009-Q31 -- 2009 QO, 11066
235CAST Obs. in Italy, 1 in MPEC 2009-Q32 -- 2009 QY6
160Castelmartini Obs. in Italy, 6 in MPECs 2009-Q31, 2009-Q32, 2009-Q33 & 2009-Q35 -- 2009 QZ6, 2009 QY6, 2009 QE8, 2009 OG, 2009 KL2, 217390
703Catalina Sky Survey (CSS) in Arizona, 7 in MPECs 2009-Q30, 2009-Q31 & 2009-Q33 -- 2009 QZ6, 2009 QN5, 2009 QJ6, 2009 LX, 2000 RH60, 162215, 1865
176Consell Obs. in Spain, 2 in MPECs 2009-Q31 & 2009-Q33 -- 2009 QZ6, 2009 QH6
B50Corner Obs. in Germany, 1 in MPEC 2009-Q31 -- 2009 NE
106Crni Vrh Obs. in Slovenia, 3 in MPEC 2009-Q31 -- 2009 QK2, 2009 QH2, 2009 NA
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPEC 2009-Q31 -- 2009 QK2, 2009 QH2
113Drebach Obs. in Germany, 2 in MPECs 2009-Q32 & 2009-Q33 -- 2009 QZ6, 2009 QY6
I21El Condor Obs. in Argentina, 5 in MPEC 2009-Q31 -- 2009 OZ4, 2009 OG, 2009 NH, 2009 MC9, 2002 LV
151Eschenberg Obs. in Switzerland, 1 in MPEC 2009-Q31 -- 2002 NP1
157Frasso Sabino Obs. in Italy, 2 in MPEC 2009-Q31 -- 2009 QO, 2009 QK2
J95Great Shefford Obs. in England, 7 in MPECs 2009-Q30, 2009-Q31, 2009-Q32 & 2009-Q33 -- 2009 QZ6, 2009 QY6, 2009 QT, 2009 QR, 2009 QK2, 2009 QJ6, 2009 QG2
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2009-Q31 -- 2009 NH, 2009 NA, 2002 NP1
695]M. Trueblood & L. Lebofsky via Kitt Peak Natl. Obs. (KPNO) in Arizona, 3 in MPECs 2009-Q31, 2009-Q32 & 2009-Q33 -- 2009 QZ6, 2009 QY6, 2009 QG2
704LINEAR in New Mexico, 7 in MPECs 2009-Q31 & 2009-Q32 -- 2009 QY6, 2009 QO, 2009 OZ7, 2009 OC, 2005 YX128, 163051, 433
J75La Sagra Obs. in Spain, 3 in MPEC 2009-Q31 -- 2009 QS, 2009 NH, 1865
560Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2009-Q31 -- 2009 QO, 2000 TO64, 433
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2009-Q29 & 2009-Q31 -- 2006 WN1, 2001 XF1
932McCarthy Obs. in Connecticut, 2 in MPECs 2009-Q31 & 2009-Q33 -- 2009 QZ6, 2009 OC
B67Mirasteilas Obs. in Switzerland, 4 in MPEC 2009-Q31 -- 2009 QO, 217390, 163697, 2100
A13Naef Obs. in Switzerland, 1 in MPEC 2009-Q31 -- 2009 QH6
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-Q34 -- 2008 SO218
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-Q32 -- 2009 QY6
D90RAS Obs. Moorook in South Australia, 1 in MPEC 2009-Q34 -- 2008 SO218
D908program code 8 via RAS Obs. Moorook in South Australia, 1 in MPEC 2009-Q31 -- 2009 QS
H36Sandlot Obs. in Kansas, 2 in MPECs 2009-Q32 & 2009-Q33 -- 2009 QZ6, 2009 QY6
204Schiaparelli Obs. in Italy, 2 in MPECs 2009-Q30 & 2009-Q32 -- 2009 QY6, 2009 QJ6
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2009-Q31 -- 2009 PY, 2009 PR1, 2009 PQ1
691Spacewatch 0.9m telescope in Arizona, 16 in MPECs 2009-Q31 & 2009-Q35 -- 2009 QE8, 2009 PT2, 2009 PH, 2009 OS5, 2009 OC3, 2006 SJ198, 2001 HZ7, 215167, 162723, 16064, 152664, 143409, 6063, 5786, 5646, 5626
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2009-Q31, 2009-Q33 & 2009-Q35 -- 2009 QZ6, 2009 QR, 2009 QE8, 2009 PT2
147Suno Obs. in Italy, 1 in MPEC 2009-Q32 -- 2009 QY6
6733A. Springmann & P. Weissman via Table Mtn. Obs. in southern California, 3 in MPECs 2009-Q31, 2009-Q32 & 2009-Q33 -- 2009 QZ6, 2009 QY6, 2009 QH2
6735Jim Young via Table Mtn. Obs. in southern California, 2 in MPECs 2009-Q32 & 2009-Q33 -- 2009 QZ6, 2009 QY6
C00Velikie Luki Obs., 1 in MPEC 2009-Q31 -- 433
A79Zvezdno Obshtestvo Obs. in Bulgaria, 1 in MPEC 2009-Q32 -- 2009 QY6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 August '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few 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
2009 QH6JPL Sentry16102022-2106671.1e-06-4.83-5.040JPL #2 for the day: "Analysis based on 33 observations spanning .68393 days (2009-Aug-19.40403 to 2009-Aug-20.087957)." Diameter approximately 0.098 km. from mean, weighted H=22.7.
NEODyS16102058-2088123.91e-09-7.47-7.790NEODyS: "Based on 33 optical observations (of which 0 are rejected as outliers) from 2009/08/19.405 to 2009/08/20.089."
2009 QRNEODyS16102049-208722.19e-08-8.96-9.020NEODyS: "Based on 37 optical observations (of which 5 are rejected as outliers) from 2009/08/17.244 to 2009/08/19.962."

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 20 August '09

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

2358Grabbed MPEC 2009-Q35 - 2009 QE8 - see above
1610Noted that JPL Sentry has updated its 2009 QH6 risk assessment - see above
Noted that NEODyS has posted 2009 QH6 as an impact risk - see above
Noted that NEODyS has reposted 2009 QR as an impact risk - see above
Grabbed MPEC 2009-Q31 - Daily Orbit Update - see above
Grabbed MPEC 2009-Q32 - 2009 QY6 - see above
Grabbed MPEC 2009-Q33 - 2009 QZ6 - see above
Grabbed MPEC 2009-Q34 - 2008 SO218 - see above
0546Noted that JPL Sentry has posted 2009 QH6 as an impact risk - see above
Grabbed MPEC 2009-Q30 - 2009 QJ6 - see above
0028Grabbed MPEC 2009-Q29 - 2006 WN1 - see above