Contents  on 14 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 14 June '09

The MPC's NEO Confirmation Page has 4 listings: 2 new, 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and two updated listings. All of these were "one nighters." 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 14 June '09

Minor Planet Electronic Circulars

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


<< DOU on 14 June '09 >>  MPEC 2009-L45 - "06:06 UT" - Daily Orbit Update

Observers  on 14 June '09

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

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 2 in MPEC 2009-L45 -- 2009 LS, 2009 LQ
J51Atlante Obs. in the Canary Islands, 3 in MPEC 2009-L45 -- 2002 LV, 162181, 15745
B09Capannoli Obs. in Italy, 1 in MPEC 2009-L45 -- 215442
703Catalina Sky Survey in Arizona, 1 in MPEC 2009-L45 -- 2005 MO13
734Farpoint Obs. in Kansas, 1 in MPEC 2009-L45 -- 2009 KK8
B23Fiamene Obs. in Italy, 1 in MPEC 2009-L45 -- 2009 BL2
A17Guidestar Obs. in Germany, 2 in MPEC 2009-L45 -- 2009 KC7, 2008 WM64
J75La Sagra Obs. in Spain, 1 in MPEC 2009-L45 -- 2000 KN44
560Madonna di Dossobuono Obs. in Italy, 1 in MPEC 2009-L45 -- 2009 KL2
A13Naef Obs. in Switzerland, 2 in MPEC 2009-L45 -- 2009 KL2, 2009 EQ2
561Piszkesteto Sta. in Hungary, 1 in MPEC 2009-L45 -- 2009 KL2
D29Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2009-L45 -- 5620
I20Rio Cuarto Obs. in Argentina, 2 in MPEC 2009-L45 -- 2009 KC3, 2009 HV77
434San Benedetto Po Obs. in Italy, 2 in MPEC 2009-L45 -- 85989, 5620
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2009-L45 -- 2009 KD3, 2009 KC3, 4954
510Siegen Obs. in Germany, 1 in MPEC 2009-L45 -- 2009 LS
587Sormano Obs. in Italy, 3 in MPEC 2009-L45 -- 2009 LS, 2009 LQ, 2009 KC7
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-L45 -- 214088
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2009-L45 -- 2009 LS, 2009 HC82, 2009 HC21, 2009 EO2
147Suno Obs. in Italy, 3 in MPEC 2009-L45 -- 2009 KJ22, 2009 KC7, 2001 FE90
A16Tentlingen Obs. in Switzerland, 1 in MPEC 2009-L45 -- 138911
A48Verona Obs. in Italy, 2 in MPEC 2009-L45 -- 2009 LQ, 2009 KL2
J08Zonalunar Obs. in Spain, 4 in MPEC 2009-L45 -- 86829, 215442, 212546, 138911
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 June '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 LXNEODyS15092071-208823.25e-11-7.92-8.100NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2009/06/11.692 to 2009/06/13.568."
2009 LSJPL Sentry15092017-2107356.1e-08-3.02-3.500JPL: "Analysis based on 48 observations spanning 1.5820 days (2009-Jun-12.39072 to 2009-Jun-13.972687)." Diameter approximately 1.100 km. from mean, weighted H=17.5.
NEODyS15092017-2085269.42e-08-2.80-3.150NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2009/06/12.391 to 2009/06/13.973."
2009 KK8JPL Sentry1509204214.6e-08-4.32-4.320JPL: "Analysis based on 33 observations spanning 15.972 days (2009-May-28.43417 to 2009-Jun-13.406)." Diameter approximately 0.560 km. from mean, weighted H=18.9.
NEODyS1509205013.74e-09-5.51-5.510NEODyS: "Based on 33 optical observations (of which 0 are rejected as outliers) from 2009/05/28.435 to 2009/06/13.407."

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 June '09

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

1509Noted that JPL Sentry has updated its 2009 KK8 risk assessment - see above
Noted that NEODyS has updated its 2009 KK8 risk assessment - see above
Noted that JPL Sentry has updated its 2009 LS risk assessment - see above
Noted that NEODyS has updated its 2009 LS risk assessment - see above
Noted that NEODyS has posted 2009 LX as an impact risk - see above
Grabbed MPEC 2009-L45 - Daily Orbit Update - see above