Contents  on 10 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 10 May '10

The MPC's NEO Confirmation Page has 11 listings: 3 new, 8 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and eight updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of fifteen 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 10 May '10

Minor Planet Electronic Circulars

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


MPEC 2010-J61 - "10:13 UT" - 2010 JA35


<< DOU on 10 May '10 >>  MPEC 2010-J60 - "06:08 UT" - Daily Orbit Update


MPEC 2010-J59 - "02:35 UT" - Comet C/2010 J2 (McNaught)

Observers  on 10 May '10

Nineteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 12 in MPECs 2010-J59, 2010-J60 & 2010-J61 -- 2010 JO33, 2010 JM1, 2010 JK1, 2010 JG, 2010 JA35, C/2010 J2, 2010 HS20, 2010 HC, 2005 EY223, 2004 EV9, 2003 AA3, 2002 SQ
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2010-J60 -- 232382, 218863
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-J60 -- 2010 JG
157Frasso Sabino Obs. in Italy, 1 in MPEC 2010-J60 -- 2010 EC135
J95Great Shefford Obs. in England, 2 in MPEC 2010-J60 -- 2010 JO33, 2010 HY103
704LINEAR in New Mexico, 6 in MPEC 2010-J60 -- 2010 HY103, 2009 WA, 2005 ED318, 218863, 207945, 1627
J75La Sagra Obs. in Spain, 3 in MPEC 2010-J60 -- 218863, 12923, 4055
H13Lenomiya Obs. in Arizona, 1 in MPEC 2010-J60 -- 2010 FC81
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2010-J59, 2010-J60 & 2010-J61 -- 2010 JA35, C/2010 J2, 2009 XO
474Mt. John Obs. in New Zealand, 5 in MPECs 2010-J59, 2010-J60 & 2010-J61 -- 2010 JJ1, 2010 JA35, C/2010 J2, 2010 HW20, 2010 GV147
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-J60 & 2010-J61 -- 2010 JA35, 2010 DJ56, 2006 CX10, 2005 GQ21, 2003 HS42, 1998 WB2
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-J59 -- C/2010 J2
D90RAS Obs. Moorook in South Australia, 1 in MPEC 2010-J59 -- C/2010 J2
H11Rodeo Obs. in New Mexico, 1 in MPEC 2010-J61 -- 2010 JA35
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2010-J59 & 2010-J61 -- 2010 JA35, C/2010 J2
E12Siding Spring Survey in New South Wales, 1 in MPEC 2010-J59 -- C/2010 J2
291Spacewatch 1.8m telescope in Arizona, 2 in MPEC 2010-J60 -- 2010 JL33, 2010 GX62
I19Tanti Obs. in Argentina, 1 in MPEC 2010-J59 -- C/2010 J2
D96Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-J59 -- C/2010 J2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 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 JT34NEODyS14002014-20901156.54e-08-3.39-4.650NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2010/05/07.417 to 2010/05/09.557."
2010 JL33JPL Sentry14002020-2106471.6e-08-4.10-4.980JPL: "Analysis based on 29 observations spanning 2.9880 days (2010-May-06.36978 to 2010-May-09.35781)." Diameter approximately 0.846 km. from mean, weighted H=18.0.
NEODyS14002020-2089702.81e-08-3.96-4.660NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2010/05/06.371 to 2010/05/09.359."
2010 JK1JPL Sentry14002090-210255.4e-08-7.44-7.590JPL: "Analysis based on 30 observations spanning 4.9151 days (2010-May-05.18574 to 2010-May-10.100827)." Diameter approximately 0.044 km. from mean, weighted H=24.4.
NEODyS1400208011.62e-10-9.88-9.880NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2010/05/05.187 to 2010/05/10.102."
2010 HS20JPL Sentry14002030-210157.6e-07-5.15-5.340JPL: "Analysis based on 42 observations spanning 18.972 days (2010-Apr-20.41913 to 2010-May-09.391393)." Diameter approximately 0.074 km. from mean, weighted H=23.3.
NEODyS14002030-206736.18e-07-5.19-5.250NEODyS: "Based on 45 optical observations (of which 3 are rejected as outliers) from 2010/04/20.420 to 2010/05/09.392."

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 10 May '10

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

1400Noted that JPL Sentry has updated its 2010 HS20 risk assessment - see above
Noted that NEODyS has updated its 2010 HS20 risk assessment - see above
Noted that JPL Sentry has updated its 2010 JK1 risk assessment - see above
Noted that NEODyS has updated its 2010 JK1 risk assessment - see above
Noted that JPL Sentry has updated its 2010 JL33 risk assessment - see above
Noted that NEODyS has updated its 2010 JL33 risk assessment - see above
Noted that NEODyS has posted 2010 JT34 as an impact risk - see above
Grabbed MPEC 2010-J60 - Daily Orbit Update - see above
Grabbed MPEC 2010-J61 - 2010 JA35 - see above
0310Grabbed MPEC 2010-J59 - Comet C/2010 J2 (McNaught) - see above