Contents  on 6 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.

Radar Astrometry  on 6 May '10

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 2302 UTC when the database was dated 6 May

NEOCP Activity  on 6 May '10

The MPC's NEO Confirmation Page has 18 listings: 11 new, 7 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eleven new and seven updated listings. Of these, ten were "one nighters." So far The Tracking News has counted a total of 25 listings on the NEOCP at some point today.

New MPECs  on 6 May '10

Minor Planet Electronic Circulars

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


MPEC 2010-J28 - "20:31 UT" - Comet P/1999 J6 = 2004 V9 = 2010 H3 (SOHO)


MPEC 2010-J27 - "16:40 UT" - 2010 JM1


MPEC 2010-J26 - "16:16 UT" - 2010 JL1


MPEC 2010-J25 - "16:14 UT" - 2010 JK1


MPEC 2010-J24 - "16:05 UT" - 2010 JJ1


MPEC 2010-J23 - "15:57 UT" - 2010 HW81


<< DOU on 6 May '10 >>  MPEC 2010-J22 - "06:06 UT" - Daily Orbit Update

Observers  on 6 May '10

A total of 21 observing facilities appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 1 in radar -- 2010 GU21
H21Astronomical Research Obs. Westfield in Illinois, 19 in MPECs 2010-J22, 2010-J24, 2010-J25, 2010-J26 & 2010-J27 -- 2010 JM1, 2010 JL1, 2010 JK1, 2010 JJ1, 2010 JA, 2010 GY6, 2010 GY23, 2010 GU21, 2010 GT7, 2010 GA34, 2010 FL48, 2010 EV45, 2010 EC135, 2010 DJ56, 2010 BB3, 2010 AL, 2004 TB18, 2000 HD74, 153814
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2010-J22 -- 54789, 12923
621Bergisch Gladbach Obs. in Germany, 1 in MPEC 2010-J22 -- 2010 JG
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2010-J22 & 2010-J27 -- 2010 JM1, 2010 FQ, 2002 YF4, 36183, 20790, 153814, 152671, 1036
G58Chabot Obs. in northern California, 3 in MPEC 2010-J22 -- 2010 GY6, 2010 GA34, 2006 XK2
448Desert Moon Obs. in New Mexico, 3 in MPEC 2010-J22 -- 2010 GY6, 2010 GR7, 1999 JR6
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-J22 -- 2009 UV18
E10Faulkes Telescope South in New South Wales, 2 in MPEC 2010-J22 -- 2010 JG, 2010 JF
704LINEAR in New Mexico, 1 in MPEC 2010-J22 -- 2006 QS
H13Lenomiya Obs. in Arizona, 1 in MPEC 2010-J22 -- 2002 JR100
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-J22 -- 2010 FC81
G96Mt. Lemmon Survey (MLS) in Arizona, 13 in MPECs 2010-J22, 2010-J24, 2010-J25, 2010-J26 & 2010-J27 -- 2010 JM1, 2010 JL1, 2010 JK1, 2010 JJ1, 2010 HA, 2002 VD118, 1999 HW1, 96631, 218017, 189973, 152564, 4179, 1036
C494HI1-A instrument (4) aboard STEREO-A in heliocentric orbit leading Earth, 1 in MPEC 2010-J28 -- P/2010 H3
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2010-J24, 2010-J26 & 2010-J27 -- 2010 JM1, 2010 JL1, 2010 JJ1
H36Sandlot Obs. in Kansas, 2 in MPECs 2010-J26 & 2010-J27 -- 2010 JM1, 2010 JL1
D21Shenton Park Obs. in Western Australia, 2 in MPEC 2010-J22 -- 2010 JG, 2010 JF
691Spacewatch 0.9m telescope in Arizona, 5 in MPECs 2010-J22 & 2010-J25 -- 2010 JK1, 2010 GW62, 2010 GR75, 2010 GG7, 2010 DJ56
291Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2010-J22 & 2010-J23 -- 2010 HW81, 2010 GZ33, 2010 GX62, 2010 GR33, 2010 GM65, 2006 QY110, 2001 LD6, 1998 WB2
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-J27 -- 2010 JM1
C51WISE in Earth polar orbit, 1 in MPEC 2010-J23 -- 2010 HW81
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 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 JK1JPL Sentry19042017-2091214.7e-07-6.16-6.560JPL: "Analysis based on 20 observations spanning 1.0183 days (2010-May-05.18574 to 2010-May-06.20402)." Diameter approximately 0.045 km. from mean, weighted H=24.4.
2010 JJ1JPL Sentry18052071-209434.8e-07-6.77-6.840JPL: "Analysis based on 19 observations spanning 1.0183 days (2010-May-05.16097 to 2010-May-06.17925)." Diameter approximately 0.030 km. from mean, weighted H=25.2.
2010 HR80NEODyS13172017-206253.63e-10-5.29-5.420NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2010/04/28.077 to 2010/05/05.214."
2010 HQ80NEODyS13172022-2089705.59e-07-3.47-4.790NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2010/04/25.029 to 2010/05/05.165."
153814 2001 WN5NEODyS23582106-212245.09e-10-6.36-6.670NEODyS: "Based on 177 optical observations (of which 4 are rejected as outliers) from 1996/02/10.397 to 2010/05/05.285."

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 6 May '10

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

2358Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above
2302Noted Radar Astrometry database update - see above
2200Grabbed MPEC 2010-J28 - Comet P/1999 J6 = 2004 V9 = 2010 H3 (SOHO) - see above
1904Noted that JPL Sentry has posted 2010 JK1 as an impact risk - see above
1805Noted that JPL Sentry has posted 2010 JJ1 as an impact risk - see above
1718Grabbed MPEC 2010-J26 - 2010 JL1 - see above
Grabbed MPEC 2010-J27 - 2010 JM1 - see above
1634Grabbed MPEC 2010-J23 - 2010 HW81 - see above
Grabbed MPEC 2010-J24 - 2010 JJ1 - see above
Grabbed MPEC 2010-J25 - 2010 JK1 - see above
1317Noted that NEODyS has posted 2010 HQ80 as an impact risk - see above
Noted that NEODyS has posted 2010 HR80 as an impact risk - see above
Grabbed MPEC 2010-J22 - Daily Orbit Update - see above