Contents  on 9 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 9 May '10

The MPC's NEO Confirmation Page has 9 listings: 3 new, 6 updated

When last checked at 2130 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and six updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of 21 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 9 May '10

Minor Planet Electronic Circulars

As of last check at 2130 UTC, there have been eight MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2010-J58 - "18:36 UT" - 2010 JW34


MPEC 2010-J57 - "18:27 UT" - 2010 JV34


MPEC 2010-J56 - "18:14 UT" - 2010 JU34


MPEC 2010-J55 - "18:10 UT" - 2010 JT34


MPEC 2010-J54 - "18:04 UT" - 2010 JS34


MPEC 2010-J53 - "18:01 UT" - 2010 JR34


MPEC 2010-J52 - "12:35 UT" - Comet P/2010 H4 (Scotti)


<< DOU on 9 May '10 >>  MPEC 2010-J51 - "06:08 UT" - Daily Orbit Update

Observers  on 9 May '10

A total of 33 observing facilities appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2010-J57 -- 2010 JV34
H21Astronomical Research Obs. Westfield in Illinois, 4 in MPECs 2010-J55, 2010-J56, 2010-J57 & 2010-J58 -- 2010 JW34, 2010 JV34, 2010 JU34, 2010 JT34
300Bisei Spaceguard Center in Japan, 3 in MPECs 2010-J51, 2010-J57 & 2010-J58 -- 2010 JW34, 2010 JV34, 2010 HY103
703Catalina Sky Survey (CSS) in Arizona, 5 in MPECs 2010-J51 & 2010-J58 -- 2010 JW34, 2009 WA, 68359, 4947, 887
J65Celbridge Obs. in Ireland, 1 in MPEC 2010-J57 -- 2010 JV34
448Desert Moon Obs. in New Mexico, 3 in MPEC 2010-J51 -- 2010 HG20, 2010 FO92, 2002 XH4
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPECs 2010-J57 & 2010-J58 -- 2010 JW34, 2010 JV34
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2010-J57 -- 2010 JV34
151Eschenberg Obs. in Switzerland, 1 in MPEC 2010-J51 -- 2004 JX20
651Grasslands Obs. in Arizona, 1 in MPEC 2010-J53 -- 2010 JR34
704LINEAR in New Mexico, 11 in MPEC 2010-J51 -- 2010 JM1, 2010 JG, 2008 LW8, 85628, 152671, 141531, 12923, 6050, 1917, 1627, 887
B33Libbiano Obs. in Italy, 2 in MPECs 2010-J57 & 2010-J58 -- 2010 JW34, 2010 JV34
844Los Molinos Obs. in Uruguay, 3 in MPEC 2010-J51 -- 2010 GA24, 2007 XB10, 162566
H01Magdalena Ridge Obs. (MRO) in New Mexico, 8 in MPECs 2010-J51, 2010-J52, 2010-J53, 2010-J54, 2010-J55, 2010-J56 & 2010-J57 -- 2010 JV34, 2010 JU34, 2010 JT34, 2010 JS34, 2010 JR34, P/2010 H4, 2010 FH81, 2009 XO
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-J51 -- 2010 FG81
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2010-J51 -- 2009 SO103
900Moriyama Obs. in Japan, 1 in MPEC 2010-J57 -- 2010 JV34
474Mt. John Obs. in New Zealand, 9 in MPECs 2010-J51, 2010-J53, 2010-J54, 2010-J55, 2010-J56, 2010-J57 & 2010-J58 -- 2010 JW34, 2010 JV34, 2010 JU34, 2010 JT34, 2010 JS34, 2010 JR34, 2010 JM1, 2010 JJ3, 2010 GH65
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-J51, 2010-J53, 2010-J54, 2010-J55, 2010-J56 & 2010-J57 -- 2010 JV34, 2010 JU34, 2010 JT34, 2010 JS34, 2010 JR34, 2010 HD33
A53Peschiera del Garda Obs. in Italy, 2 in MPEC 2010-J51 -- 54789, 52750
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2010-J51 -- 2009 UV18
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-J57 -- 2010 JV34
I20Rio Cuarto Obs. in Argentina, 3 in MPEC 2010-J51 -- 2010 JG, 2010 CM44, 2009 TB8
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2010-J57 & 2010-J58 -- 2010 JW34, 2010 JV34
H36Sandlot Obs. in Kansas, 1 in MPEC 2010-J53 -- 2010 JR34
B70Sant Celoni Obs. in Spain, 1 in MPEC 2010-J51 -- 68359
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2010-J51 -- 2009 ST103
691Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2010-J51 -- 2010 GW62, 2010 GR75, 2010 GO33
291Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2010-J51, 2010-J52, 2010-J54 & 2010-J55 -- 2010 JT34, 2010 JS34, 2010 HS20, P/2010 H4, 2010 GX62
I19Tanti Obs. in Argentina, 5 in MPECs 2010-J51 & 2010-J57 -- 2010 JV34, 2010 JO33, 2010 JJ3, 2007 VG189, 2005 WE
D96Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-J57 -- 2010 JV34
H47Vicksburg Obs. in Mississippi, 2 in MPECs 2010-J51 & 2010-J57 -- 2010 JV34, 2006 CX10
A79Zvezdno Obshtestvo Obs. in Bulgaria, 1 in MPEC 2010-J52 -- P/2010 H4
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 May '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2130 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 JT34JPL Sentry20452031-2109635.3e-08-3.69-4.930JPL: "Analysis based on 22 observations spanning 2.1401 days (2010-May-07.4161 to 2010-May-09.55624)." Diameter approximately 0.695 km. from mean, weighted H=18.4.
2010 JL33NEODyS16002013-20901021.81e-07-2.72-3.070NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2010/05/06.371 to 2010/05/08.569."
2010 HS20JPL Sentry16002030-210131.0e-05-3.93-3.960JPL: "Analysis based on 42 observations spanning 17.972 days (2010-Apr-20.41913 to 2010-May-08.3908)." Diameter approximately 0.075 km. from mean, weighted H=23.3.
NEODyS16002030-208869.13e-06-3.95-3.980NEODyS: "Based on 42 optical observations (of which 0 are rejected as outliers) from 2010/04/20.420 to 2010/05/08.392."
2009 XOJPL Sentry1600R E M O V E DJPL: Risk listing removed at 0953 UTC.
NEODyS1600R E M O V E D-

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 9 May '10

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

2045Noted that JPL Sentry has posted 2010 JT34 as an impact risk - see above
1907Grabbed MPEC 2010-J53 - 2010 JR34 - see above
Grabbed MPEC 2010-J54 - 2010 JS34 - see above
Grabbed MPEC 2010-J55 - 2010 JT34 - see above
Grabbed MPEC 2010-J56 - 2010 JU34 - see above
Grabbed MPEC 2010-J57 - 2010 JV34 - see above
Grabbed MPEC 2010-J58 - 2010 JW34 - see above
1600Noted that JPL Sentry has removed 2009 XO as an impact risk - see above
Noted that NEODyS has removed 2009 XO as an impact risk - see above
Noted 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 NEODyS has posted 2010 JL33 as an impact risk - see above
Grabbed MPEC 2010-J51 - Daily Orbit Update - see above
Grabbed MPEC 2010-J52 - Comet P/2010 H4 (Scotti) - see above