Contents  on 16 June '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 16 June '09

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There were eight listings noted earlier today.

New MPECs  on 16 June '09

Minor Planet Electronic Circulars

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


MPEC 2009-M06 - "22:24 UT" - 2009 MA


MPEC 2009-M05 - "19:16 UT" - Comet P/2009 L2 (Yang-Gao)


MPEC 2009-M04 - "15:46 UT" - 2009 LW2


MPEC 2009-M03 - "15:40 UT" - 2009 LV2


MPEC 2009-M02 - "15:35 UT" - 2009 LU2


<< DOU on 16 June '09 >>  MPEC 2009-M01 - "06:06 UT" - Daily Orbit Update

Observers  on 16 June '09

A total of 23 observing facilities appear in today's MPECs.

CodeObserver / observatory
300Bisei Spaceguard Center in Japan, 1 in MPEC 2009-M05 -- P/2009 L2
160Castelmartini Obs. in Italy, 4 in MPEC 2009-M01 -- 2009 LS, 2002 LV, 85989, 162181
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2009-M01 & 2009-M06 -- 2009 MA, 2009 LQ, 2009 KV2, 85989, 24761, 216115, 16960, 162181, 9162, 3988
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2009-M01 -- 2009 LS
F659Marco Micheli in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2009-M01 -- 2009 LS
203GiaGa Obs. in Italy, 1 in MPEC 2009-M01 -- 5620
J95Great Shefford Obs. in England, 3 in MPECs 2009-M01, 2009-M03 & 2009-M06 -- 2009 MA, 2009 LV2, 2009 LS
E16Grove Creek Obs. in New South Wales, 2 in MPECs 2009-M01 & 2009-M05 -- P/2009 L2, 4015
A17Guidestar Obs. in Germany, 1 in MPEC 2009-M06 -- 2009 MA
D32JiangNanTianChi Obs. in China, 1 in MPEC 2009-M05 -- P/2009 L2
B90Malina River Obs. in Italy, 1 in MPEC 2009-M01 -- 215442
932McCarthy Obs. in Connecticut, 1 in MPEC 2009-M01 -- 2009 LS
152Moletai Obs. in Lithuania, 1 in MPEC 2009-M01 -- 2008 OS9
900Moriyama Obs. in Japan, 1 in MPEC 2009-M05 -- P/2009 L2
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2009-M02, 2009-M03 & 2009-M06 -- 2009 MA, 2009 LV2, 2009 LU2
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-M05 -- P/2009 L2
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-M06 -- 2009 MA
D90RAS Obs. Moorook in South Australia, 1 in MPEC 2009-M05 -- P/2009 L2
434San Benedetto Po Obs. in Italy, 1 in MPEC 2009-M01 -- 15745
E12Siding Spring Survey (SSS) in New South Wales, 5 in MPEC 2009-M01 -- 2009 LX, 2009 KV21, 2009 KN4, 2009 KE3, 108519
691Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2009-M01 & 2009-M04 -- 2009 LW2, 2009 EQ2
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2009-M01, 2009-M02, 2009-M03 & 2009-M04 -- 2009 LW2, 2009 LV2, 2009 LU2, 2009 LS, 2009 KM7, 2009 AV
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2009-M05 -- P/2009 L2
C42Xingming Obs. in China, 1 in MPEC 2009-M05 -- P/2009 L2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 16 June '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: JPL at 2358 and NEODyS 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. 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 LW2JPL Sentry18322020-2109363.4e-08-4.60-5.200JPL: "Analysis based on 7 observations spanning .96404 days (2009-Jun-15.44034 to 2009-Jun-16.40438)." Diameter approximately 0.350 km. from mean, weighted H=19.9.
2009 LQ1NEODyS13302016-2067131.92e-06-4.36-4.900NEODyS: "Based on 16 optical observations (of which 1 are rejected as outliers) from 2009/06/14.202 to 2009/06/15.242."
2009 LXJPL Sentry13302075-208022.1e-09-6.15-6.210JPL: "Analysis based on 13 observations spanning 4.0819 days (2009-Jun-11.69171 to 2009-Jun-15.77362)." Diameter approximately 0.430 km. from mean, weighted H=19.5.
NEODyS1330207522.82e-09-6.22-6.260NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2009/06/11.692 to 2009/06/15.774."
2009 LSNEODyS1330R E M O V E D-
JPL Sentry1330R E M O V E DJPL: Risk listing removed at 0851 UTC.
2009 KN4NEODyS1330R E M O V E D-
JPL Sentry1330R E M O V E DJPL: Risk listing removed at 0850 UTC.

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 16 June '09

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

2358Grabbed MPEC 2009-M06 - 2009 MA - see above
2237Noted that the NEOCP has become empty
2218Grabbed MPEC 2009-M05 - Comet P/2009 L2 (Yang-Gao) - see above
1832Noted that JPL Sentry has posted 2009 LW2 as an impact risk - see above
1604Grabbed MPEC 2009-M02 - 2009 LU2 - see above
Grabbed MPEC 2009-M03 - 2009 LV2 - see above
Grabbed MPEC 2009-M04 - 2009 LW2 - see above
1330Noted that JPL Sentry has removed 2009 KN4 as an impact risk - see above
Noted that NEODyS has removed 2009 KN4 as an impact risk - see above
Noted that NEODyS has posted 2009 LQ1 as an impact risk - see above
Noted that JPL Sentry has removed 2009 LS as an impact risk - see above
Noted that NEODyS has removed 2009 LS as an impact risk - see above
Noted that JPL Sentry has updated its 2009 LX risk assessment - see above
Noted that NEODyS has updated its 2009 LX risk assessment - see above
Grabbed MPEC 2009-M01 - Daily Orbit Update - see above