Spitzer Space Telescope artwork, 
credit NASA/JPL-Caltech/R. Hurt.

It was reported yesterday that, in the course of a "warm mode" program to survey NEO physical characteristics via infrared, the Spitzer Space Telescope (SST) has found "a surprisingly wide array of compositions" among the first 100 of 700 objects planned (about 10% of the known population). Artwork credit: NASA/JPL-Caltech/R. Hurt.


Contents  on 3 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 3 September '10

The MPC's NEO Confirmation Page has 17 listings: 2 new, 15 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and fifteen updated listings. Of these, twelve were "one nighters." The Tracking News counted a total of 26 listings on the NEOCP at some point on this day.

New MPECs  on 3 September '10

Minor Planet Electronic Circulars

There were twelve MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2010-R23 - "23:13 UT" - Comet P/2010 L1 = 2002 Q16 (WISE)


MPEC 2010-R22 - "21:57 UT" - 2010 RJ4


MPEC 2010-R21 - "18:51 UT" - Comet P/2010 L1 (WISE)


MPEC 2010-R20 - "17:09 UT" - 2010 RY3


MPEC 2010-R19 - "17:03 UT" - 2010 RX3


MPEC 2010-R18 - "16:54 UT" - 2010 RW3


MPEC 2010-R17 - "16:45 UT" - 2010 RV3


MPEC 2010-R16 - "16:37 UT" - 2010 RU3


MPEC 2010-R15 - "16:32 UT" - 2010 RT3


MPEC 2010-R14 - "16:28 UT" - 2010 RS3


MPEC 2010-R13 - "15:35 UT" - 1997 GL3


<< DOU on 3 Sept. '10 >>  MPEC 2010-R12 - "06:08 UT" - Daily Orbit Update

Observers  on 3 September '10

A total of 29 observing facilities appeared in this day's MPECs.

CodeObserver / observatory
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2010-R12 -- 143381, 6239
I77CEAMIG-REA in Brazil, 1 in MPEC 2010-R13 -- 1997 GL3
160Castelmartini Obs. in Italy, 7 in MPEC 2010-R12 -- 2010 MF1, 2010 FO92, 2002 NE71, 243025, 23187, 7336, 5786
G58Chabot Obs. in northern California, 4 in MPECs 2010-R12 & 2010-R14 -- 2010 RS3, 2010 PR10, 2010 OL101, 189011
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2010-R13 -- 1997 GL3
448Desert Moon Obs. in New Mexico, 3 in MPEC 2010-R12 -- 2010 PS66, 2010 PR10, 153842
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 3 in MPEC 2010-R12 -- 2010 PR66, 2010 NW117, 2010 MF1
151Eschenberg Obs. in Switzerland, 1 in MPEC 2010-R22 -- 2010 RJ4
734Farpoint Obs. in Kansas, 3 in MPECs 2010-R13, 2010-R14 & 2010-R15 -- 2010 RT3, 2010 RS3, 1997 GL3
J95Great Shefford Obs. in England, 5 in MPECs 2010-R13, 2010-R14, 2010-R15, 2010-R19 & 2010-R22 -- 2010 RX3, 2010 RT3, 2010 RS3, 2010 RJ4, 1997 GL3
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2010-R12 -- 2010 MF1, 2002 NE71, 19764
B15Inastars Obs. in Germany, 1 in MPEC 2010-R14 -- 2010 RS3
704LINEAR in New Mexico, 15 in MPEC 2010-R12 -- 2010 RF, 2010 RA, 2010 PM10, 2010 NW117, 2010 FO92, 2003 FC5, 87311, 230979, 19764, 17182, 161998, 138404, 6239, 5143, 4183
J75La Sagra Obs. in Spain, 2 in MPECs 2010-R12 & 2010-R13 -- 2010 PP2, 1997 GL3
B33Libbiano Obs. in Italy, 1 in MPEC 2010-R22 -- 2010 RJ4
900Moriyama Obs. in Japan, 1 in MPEC 2010-R13 -- 1997 GL3
G96Mt. Lemmon Survey (MLS) in Arizona, 14 in MPECs 2010-R12, 2010-R13, 2010-R14, 2010-R15, 2010-R16, 2010-R17, 2010-R18, 2010-R19, 2010-R20, 2010-R21 & 2010-R22 -- 2010 RY3, 2010 RX3, 2010 RW3, 2010 RV3, 2010 RU3, 2010 RT3, 2010 RS3, 2010 RJ4, 2010 PS66, P/2010 L1, 2009 YG, 2007 BG49, 1997 GL3, 4660
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2010-R23 -- P/2002 Q16
473Remanzacco Obs. in Italy, 1 in MPEC 2010-R14 -- 2010 RS3
854Sabino Canyon Obs. in Arizona, 4 in MPECs 2010-R13, 2010-R14, 2010-R15 & 2010-R22 -- 2010 RT3, 2010 RS3, 2010 RJ4, 1997 GL3
B38Santa Mama Obs. in Italy, 2 in MPEC 2010-R12 -- 2007 VG189, 4055
204Schiaparelli Obs. in Italy, 1 in MPEC 2010-R21 -- P/2010 L1
E12Siding Spring Survey in New South Wales, 1 in MPEC 2010-R12 -- 2010 NG3
587Sormano Obs. in Italy, 4 in MPEC 2010-R12 -- 2010 PR66, 2010 PR10, 2010 OC, 2010 FO92
J26Spaceguard Centre in Wales, 1 in MPEC 2010-R12 -- 7336
291Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2010-R12, 2010-R14, 2010-R15, 2010-R17, 2010-R18, 2010-R20 & 2010-R22 -- 2010 RY3, 2010 RW3, 2010 RV3, 2010 RT3, 2010 RS3, 2010 RJ4, 2010 QG2, 2010 QD2, 2010 PU66, 2010 PQ2, 2010 OB101, 2005 XJ8, 2003 SJ84, 2003 QH5
A78Stia Obs. in Italy, 1 in MPEC 2010-R12 -- 2010 PR10
B18Terskol Obs. in Russia, 1 in MPEC 2010-R22 -- 2010 RJ4
H47Vicksburg Obs. in Mississippi, 3 in MPEC 2010-R12 -- 19764, 6239, 4197
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 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 RY3JPL Sentry19202064-2106112.1e-07-6.88-7.080JPL: "Analysis based on 15 observations spanning .98168 days (2010-Sep-02.45103 to 2010-Sep-03.43271)." Diameter approximately 0.035 km. from mean, weighted H=24.9.
2010 RX3JPL Sentry1920205412.6e-09-8.58-8.580JPL: "Analysis based on 17 observations spanning .97471 days (2010-Sep-02.44799 to 2010-Sep-03.4227)." Diameter approximately 0.034 km. from mean, weighted H=25.0.
2010 QG2JPL Sentry15022051-2064103.2e-05-4.06-4.330JPL: "Analysis based on 19 observations spanning 1.9350 days (2010-Aug-31.37082 to 2010-Sep-02.30578)." Diameter approximately 0.049 km. from mean, weighted H=24.2.
NEODyS15022051-2070153.17e-05-4.06-4.340NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2010/08/31.372 to 2010/09/02.307."

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 3 September '10

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

2359Grabbed MPEC 2010-R23 - Comet P/2010 L1 = 2002 Q16 (WISE) - see above
2302Grabbed MPEC 2010-R22 - 2010 RJ4 - see above
1920Noted that JPL Sentry has posted 2010 RX3 as an impact risk - see above
Noted that JPL Sentry has posted 2010 RY3 as an impact risk - see above
Grabbed MPEC 2010-R21 - Comet P/2010 L1 (WISE) - see above
1734Grabbed MPEC 2010-R15 - 2010 RT3 - see above
Grabbed MPEC 2010-R16 - 2010 RU3 - see above
Grabbed MPEC 2010-R17 - 2010 RV3 - see above
Grabbed MPEC 2010-R18 - 2010 RW3 - see above
Grabbed MPEC 2010-R19 - 2010 RX3 - see above
Grabbed MPEC 2010-R20 - 2010 RY3 - see above
1632Grabbed MPEC 2010-R13 - 1997 GL3 - see above
Grabbed MPEC 2010-R14 - 2010 RS3 - see above
1502Noted that JPL Sentry has updated its 2010 QG2 risk assessment - see above
Noted that NEODyS has updated its 2010 QG2 risk assessment - see above
Grabbed MPEC 2010-R12 - Daily Orbit Update - see above