Contents  on 22 May '10

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 22 May '10

The MPC's NEO Confirmation Page has 8 listings: 8 new

When last checked at 2343 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eight new listings. Of these, three were "one nighters." So far The Tracking News has counted a total of ten 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 22 May '10

Minor Planet Electronic Circulars

As of last check at 2343 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2010-K42 - "16:43 UT" - 2010 KU10


<< DOU on 22 May '10 >>  MPEC 2010-K41 - "06:11 UT" - Daily Orbit Update

Observers  on 22 May '10

Sixteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2010-K41 -- 2010 JK41
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2010-K41 -- 2010 JV34
C12Berta Obs. in Spain, 1 in MPEC 2010-K41 -- 2010 KO10
I99Blanquita Obs. in Spain, 1 in MPEC 2010-K41 -- 2010 FC81
703Catalina Sky Survey (CSS) in Arizona, 5 in MPEC 2010-K41 -- 2010 KQ, 2008 LW8, 2002 YF4, 54789, 40267
448Desert Moon Obs. in New Mexico, 6 in MPEC 2010-K41 -- 2010 JV34, 2010 JT34, 2010 JH88, 2006 UM216, 1995 SA, 237442
J75La Sagra Obs. in Spain, 1 in MPEC 2010-K41 -- 2010 JK41
8092David Tholen via La Silla in Chile, 1 in MPEC 2010-K41 -- 2010 JD87
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2010-K41 & 2010-K42 -- 2010 KU10, 2010 KQ
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2010-K41 & 2010-K42 -- 2010 KU10, 4179
H36Sandlot Obs. in Kansas, 1 in MPEC 2010-K42 -- 2010 KU10
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-K41 -- 2010 JL33
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2010-K41 & 2010-K42 -- 2010 KU10, 2010 JU34, 2010 JG87, 2010 JF
611Starkenburg Obs. in Germany, 1 in MPEC 2010-K41 -- 2010 KO10
926Tenagra II Obs. in Arizona, 2 in MPEC 2010-K41 -- 2010 KB8, 2010 KA8
A48Verona Obs. in Italy, 2 in MPEC 2010-K41 -- 2010 KB8, 2010 JV34
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 May '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2343 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 (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
2010 KU10JPL Sentry2020209114.3e-10-6.69-6.690JPL: "Analysis based on 17 observations spanning 1.0625 days (2010-May-21.14942 to 2010-May-22.2119)." Diameter approximately 0.380 km. from mean, weighted H=19.8.
2010 KR10NEODyS14512024-205131.85e-09-5.32-5.410NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2010/05/20.442 to 2010/05/21.467."
JPL Sentry02022014-21094311.1e-06-3.07-4.360JPL: "Analysis based on 16 observations spanning 1.0253 days (2010-May-20.44123 to 2010-May-21.46654)." Diameter approximately 0.444 km. from mean, weighted H=19.4.
2010 KQ10NEODyS14512011-2081573.47e-08-4.63-5.160NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2010/05/20.418 to 2010/05/21.455."
2010 KQJPL Sentry1451203734.5e-04-5.03-5.030JPL: "Analysis based on 36 observations spanning 5.1263 days (2010-May-16.16161 to 2010-May-21.28791)." Diameter approximately 0.007 km. from mean, weighted H=28.5.

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 22 May '10

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

2020Noted that JPL Sentry has posted 2010 KU10 as an impact risk - see above
1726Grabbed MPEC 2010-K42 - 2010 KU10 - see above
1451Noted that JPL Sentry has updated its 2010 KQ risk assessment - see above
Noted that NEODyS has posted 2010 KQ10 as an impact risk - see above
Noted that NEODyS has posted 2010 KR10 as an impact risk - see above
Grabbed MPEC 2010-K41 - Daily Orbit Update - see above
0202Noted that JPL Sentry has posted 2010 KR10 as an impact risk - see above