Contents  on 4 September '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 4 September '10

The MPC's NEO Confirmation Page has 19 listings: 6 new, 13 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had six new and thirteen updated listings. Of these, thirteen were "one nighters." So far The Tracking News has counted a total of 32 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 4 September '10

Minor Planet Electronic Circulars

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


MPEC 2010-R34 - "19:33 UT" - 2008 EE68


MPEC 2010-R33 - "18:58 UT" - 2001 PH9


MPEC 2010-R32 - "18:46 UT" - 2008 EE68 = 2010 RX11


MPEC 2010-R31 - "18:07 UT" - 2010 RB12


MPEC 2010-R30 - "17:51 UT" - 2010 RA12


MPEC 2010-R29 - "17:48 UT" - 2010 RZ11


MPEC 2010-R28 - "17:44 UT" - 2010 RY11


MPEC 2010-R27 - "17:37 UT" - 2010 RW11


MPEC 2010-R26 - "17:30 UT" - 2010 RV11


MPEC 2010-R25 - "16:50 UT" - 2010 RT11


<< DOU on 4 Sept. '10 >>  MPEC 2010-R24 - "06:08 UT" - Daily Orbit Update

Observers  on 4 September '10

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

CodeObserver / observatory
834AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2010-R24 -- 2010 LY63
H21Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2010-R24 & 2010-R33 -- 2001 PH9, 153951
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2010-R24 -- 19764, 143381
300Bisei Spaceguard Center in Japan, 1 in MPEC 2010-R33 -- 2001 PH9
160Castelmartini Obs. in Italy, 25 in MPEC 2010-R24 -- 2010 MF1, 2010 KZ117, 2010 FO92, 2007 VG189, 2005 GE59, 2002 NE71, 66008, 243147, 243025, 242211, 237442, 23187, 19764, 154029, 152558, 143381, 138847, 7336, 6239, 5786, 5143, 4486, 4257, 4055, 3752
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 3 in MPEC 2010-R24 -- 2010 RA, 2010 QD2, 2010 PU66
734Farpoint Obs. in Kansas, 2 in MPECs 2010-R25 & 2010-R31 -- 2010 RT11, 2010 RB12
J95Great Shefford Obs. in England, 2 in MPECs 2010-R24 & 2010-R25 -- 2010 RT11, 2010 QG2
379Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2010-R24 -- 2010 MF1, 2002 NE71, 154029, 2212
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2010-R25 -- 2010 RT11
682Kanab Obs. in Utah, 1 in MPEC 2010-R25 -- 2010 RT11
704LINEAR in New Mexico, 20 in MPECs 2010-R24 & 2010-R31 -- 2010 RS3, 2010 RJ4, 2010 RC, 2010 RB12, 2010 RA, 2010 PP2, 2010 NW117, 2010 FO92, 2000 PQ27, 1997 GL3, 31221, 19764, 17182, 161998, 143381, 9202, 7977, 7336, 6239, 5786
J75La Sagra Obs. in Spain, 1 in MPEC 2010-R33 -- 2001 PH9
B33Libbiano Obs. in Italy, 1 in MPEC 2010-R25 -- 2010 RT11
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2010-R26, 2010-R27, 2010-R28, 2010-R30 & 2010-R34 -- 2010 RY11, 2010 RW11, 2010 RV11, 2010 RA12, 2008 EE68
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-R24 -- 2010 CN141
900Moriyama Obs. in Japan, 1 in MPEC 2010-R31 -- 2010 RB12
G96Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2010-R24, 2010-R25, 2010-R26, 2010-R27, 2010-R28, 2010-R29, 2010-R30 & 2010-R34 -- 2010 RZ11, 2010 RY11, 2010 RW11, 2010 RV11, 2010 RT11, 2010 RA12, 2008 EE68, 2003 FC5, 143381, 100756
473Remanzacco Obs. in Italy, 1 in MPEC 2010-R25 -- 2010 RT11
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2010-R31 -- 2010 RB12
291Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2010-R24, 2010-R25, 2010-R26, 2010-R28, 2010-R29 & 2010-R34 -- 2010 RZ11, 2010 RY11, 2010 RV11, 2010 RT11, 2010 QG2, 2010 PW58, 2010 PS66, 2010 KK127, 2008 EE68, 2005 XJ8, 2002 GZ8
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 September '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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 RZ11JPL Sentry2002206219.2e-09-8.66-8.660JPL: "Analysis based on 15 observations spanning 1.0807 days (2010-Sep-03.35811 to 2010-Sep-04.43884)." Diameter approximately 0.016 km. from mean, weighted H=26.6.
2010 RY3NEODyS1522207817.51e-10-9.19-9.190NEODyS: "Based on 15 optical observations (of which 1 are rejected as outliers) from 2010/09/02.452 to 2010/09/03.433."
2010 RW3NEODyS15222034-206631.3e-10-9.51-9.750NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2010/09/02.383 to 2010/09/03.314."
2010 QG2JPL Sentry15222051-207072.6e-06-5.11-5.170JPL: "Analysis based on 27 observations spanning 3.0580 days (2010-Aug-31.37082 to 2010-Sep-03.42881)." Diameter approximately 0.049 km. from mean, weighted H=24.2.
NEODyS15222051-207082.98e-06-5.05-5.100NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2010/08/31.372 to 2010/09/03.430."

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 4 September '10

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

2002Noted that JPL Sentry has posted 2010 RZ11 as an impact risk - see above
Grabbed MPEC 2010-R34 - 2008 EE68 - see above
1902Grabbed MPEC 2010-R29 - 2010 RZ11 - see above
Grabbed MPEC 2010-R30 - 2010 RA12 - see above
Grabbed MPEC 2010-R31 - 2010 RB12 - see above
Grabbed MPEC 2010-R32 - 2008 EE68 = 2010 RX11 - see above
Grabbed MPEC 2010-R33 - 2001 PH9 - see above
1746Grabbed MPEC 2010-R26 - 2010 RV11 - see above
Grabbed MPEC 2010-R27 - 2010 RW11 - see above
Grabbed MPEC 2010-R28 - 2010 RY11 - see above
1717Grabbed MPEC 2010-R25 - 2010 RT11 - see above
1522Noted that JPL Sentry has updated its 2010 QG2 risk assessment - see above
Noted that NEODyS has updated its 2010 QG2 risk assessment - see above
Noted that NEODyS has posted 2010 RW3 as an impact risk - see above
Noted that NEODyS has posted 2010 RY3 as an impact risk - see above
Grabbed MPEC 2010-R24 - Daily Orbit Update - see above