Contents  on 21 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 21 May '10

The MPC's NEO Confirmation Page has 6 listings: 5 new, 1 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five new and one updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of eighteen 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 21 May '10

Minor Planet Electronic Circulars

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


MPEC 2010-K40 - "21:02 UT" - 2010 KR10


MPEC 2010-K39 - "20:57 UT" - 2010 KQ10


MPEC 2010-K38 - "20:51 UT" - 2010 KP10


MPEC 2010-K37 - "20:47 UT" - 2010 KO10


MPEC 2010-K36 - "20:39 UT" - 2010 JM151


MPEC 2010-K35 - "20:35 UT" - 2010 HZ108


<< DOU on 21 May '10 >>  MPEC 2010-K34 - "06:11 UT" - Daily Orbit Update


MPEC 2010-K33 - "01:54 UT" - 2010 KB8


MPEC 2010-K32 - "01:50 UT" - 2010 KA8

Observers  on 21 May '10

A total of 22 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2010-K32, 2010-K33 & 2010-K34 -- 2010 KB8, 2010 KA8, 2010 JV34, 2010 JO71, 2010 JL41, 2010 JG88, 2010 JG, 2010 JE88, 2010 GA34, 2004 JX20
703Catalina Sky Survey (CSS) in Arizona, 5 in MPECs 2010-K33, 2010-K34 & 2010-K37 -- 2010 KO10, 2010 KB8, 153957, 152671, 12923
651Grasslands Obs. in Arizona, 1 in MPEC 2010-K33 -- 2010 KB8
695]Mark Trueblood via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2010-K33 -- 2010 KB8
J75La Sagra Obs. in Spain, 2 in MPEC 2010-K34 -- 85818, 19764
H13Lenomiya Obs. in Arizona, 2 in MPEC 2010-K34 -- 2010 JV34, 2010 JN71
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2010-K35, 2010-K37, 2010-K38, 2010-K39 & 2010-K40 -- 2010 KR10, 2010 KQ10, 2010 KP10, 2010 KO10, 2010 HZ108
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2010-K34 & 2010-K35 -- 2010 HZ108, 1999 VO11
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-K33, 2010-K34, 2010-K39 & 2010-K40 -- 2010 KR10, 2010 KQ10, 2010 KB8, 2010 JO33, 164215, 164201
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2010-K32 -- 2010 KA8
H11Rodeo Obs. in New Mexico, 1 in MPEC 2010-K38 -- 2010 KP10
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2010-K32, 2010-K37 & 2010-K38 -- 2010 KP10, 2010 KO10, 2010 KA8
B04Saint-Barthelemy Obs. in Italy, 4 in MPECs 2010-K32, 2010-K33, 2010-K37 & 2010-K38 -- 2010 KP10, 2010 KO10, 2010 KB8, 2010 KA8
E12Siding Spring Survey in New South Wales, 1 in MPEC 2010-K36 -- 2010 JM151
691Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2010-K34 & 2010-K38 -- 2010 KP10, 37638
291Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2010-K34 & 2010-K38 -- 2010 KP10, 2010 JV39, 2010 JE88, 2010 HS20, 2010 HA, 2010 GR75, 2010 FC81, 2010 CN44
926Tenagra II Obs. in Arizona, 6 in MPECs 2010-K32, 2010-K34, 2010-K37 & 2010-K38 -- 2010 KP10, 2010 KO10, 2010 KE, 2010 KA8, 2010 JG88, 2010 JF88
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-K32 -- 2010 KA8
G72University Hills Obs. in southern California, 2 in MPEC 2010-K34 -- 2010 JV34, 2010 FC81
H47Vicksburg Obs. in Mississippi, 1 in MPEC 2010-K34 -- 234061
C51WISE in Earth polar orbit, 2 in MPECs 2010-K35 & 2010-K36 -- 2010 JM151, 2010 HZ108
G56Walnut Creek Obs. in northern California, 2 in MPECs 2010-K34 & 2010-K37 -- 2010 KO10, 2010 GA34
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 21 May '10

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. 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 KQ10JPL Sentry23582016-2108799.6e-08-4.77-5.140JPL: "Analysis based on 15 observations spanning 1.0369 days (2010-May-20.41696 to 2010-May-21.45382)." Diameter approximately 0.207 km. from mean, weighted H=21.1.
2010 KV7NEODyS14382034-2088392.31e-05-5.15-5.540NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2010/05/17.202 to 2010/05/20.250."
2010 KQJPL Sentry2358203615.6e-08-8.91-8.910JPL: "Analysis based on 32 observations spanning 5.0325 days (2010-May-16.16161 to 2010-May-21.19407)." Diameter approximately 0.007 km. from mean, weighted H=28.5.
2010 JH110NEODyS1438R E M O V E D-
2010 JE88JPL Sentry1438204112.0e-09-6.48-6.480JPL: "Analysis based on 73 observations spanning 6.0935 days (2010-May-14.24843 to 2010-May-20.34192)." Diameter approximately 0.170 km. from mean, weighted H=21.5.
2010 HS20NEODyS1438203911.72e-08-6.83-6.830NEODyS: "Based on 52 optical observations (of which 4 are rejected as outliers) from 2010/04/20.420 to 2010/05/19.440."
JPL Sentry1438R E M O V E DJPL: Risk listing removed at 0951 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 21 May '10

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

2358Noted that JPL Sentry has updated its 2010 KQ risk assessment - see above
Noted that JPL Sentry has posted 2010 KQ10 as an impact risk - see above
2106Grabbed MPEC 2010-K35 - 2010 HZ108 - see above
Grabbed MPEC 2010-K36 - 2010 JM151 - see above
Grabbed MPEC 2010-K37 - 2010 KO10 - see above
Grabbed MPEC 2010-K38 - 2010 KP10 - see above
Grabbed MPEC 2010-K39 - 2010 KQ10 - see above
Grabbed MPEC 2010-K40 - 2010 KR10 - see above
1438Noted that JPL Sentry has removed 2010 HS20 as an impact risk - see above
Noted that NEODyS has updated its 2010 HS20 risk assessment - see above
Noted that JPL Sentry has updated its 2010 JE88 risk assessment - see above
Noted that NEODyS has removed 2010 JH110 as an impact risk - see above
Noted that NEODyS has posted 2010 KV7 as an impact risk - see above
Grabbed MPEC 2010-K34 - Daily Orbit Update - see above
0200Grabbed MPEC 2010-K32 - 2010 KA8 - see above
Grabbed MPEC 2010-K33 - 2010 KB8 - see above