Contents  on 18 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 18 September '10

The MPC's NEO Confirmation Page has 18 listings: 6 new, 12 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had six new and twelve updated listings. Of these, fifteen were "one nighters." So far The Tracking News has counted a total of 25 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 18 September '10

Minor Planet Electronic Circulars

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


MPEC 2010-S20 - "21:58 UT" - 2010 ST3


MPEC 2010-S19 - "21:53 UT" - 2010 SS3


MPEC 2010-S18 - "21:50 UT" - 2010 SR3


<< DOU on 18 Sept. '10 >>  MPEC 2010-S17 - "06:10 UT" - Daily Orbit Update


MPEC 2010-S16 - "03:53 UT" - 2010 SP3

Observers  on 18 September '10

Eighteen observing facilities appear in today's MPECs.

CodeObserver / observatory
B17AZT-8 Evpatoria in the Ukraine, 3 in MPEC 2010-S17 -- 65679, 5143, 2212
J32Aljaraque Obs. in Spain, 1 in MPEC 2010-S17 -- 23187
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2010-S17, 2010-S18, 2010-S19 & 2010-S20 -- 2010 ST3, 2010 SS3, 2010 SR3, 2010 SD, 2010 RM80, 2010 RK53, 2010 RA91
I90Blackrock Castle Obs., 1 in MPEC 2010-S17 -- 162269
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2010-S16 & 2010-S17 -- 2010 SP3, 2010 SD, 2010 PP2, 2010 KY39, 2005 GE59, 2005 AC, 2000 PQ27, 20826, 143381
J95Great Shefford Obs. in England, 2 in MPECs 2010-S16 & 2010-S17 -- 2010 SP3, 2010 SE
A17Guidestar Obs. in Germany, 2 in MPECs 2010-S16 & 2010-S17 -- 2010 SP3, 2010 SE
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2010-S17 -- 2010 LY63, 2007 TY18, 1997 GL3
G89Kachina Obs. in Arizona, 1 in MPEC 2010-S17 -- 2010 RA91
704LINEAR in New Mexico, 7 in MPEC 2010-S17 -- 2010 SE, 2010 SD, 2010 SC, 2010 RB130, 1999 TB5, 199145, 5869
844Los Molinos Obs. in Uruguay, 1 in MPEC 2010-S17 -- 2010 QE2
130Lumezzane Obs. in Italy, 5 in MPEC 2010-S17 -- 2010 MF1, 2000 PQ27, 1997 GL3, 152952, 12538
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-S17, 2010-S18 & 2010-S19 -- 2010 SS3, 2010 SR3, 2010 RP80, 2010 RJ64, 2010 RD130, 65679
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2010-S20 -- 2010 ST3
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-S17 -- 29075
291Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2010-S17, 2010-S18, 2010-S19 & 2010-S20 -- 2010 ST3, 2010 SS3, 2010 SR3, 2010 SD, 2010 RJ64, 2010 RG42, 2010 RD31, 2010 RC130, 2010 RC, 2010 RA91, 2003 YG118
I19Tanti Obs. in Argentina, 2 in MPEC 2010-S17 -- 2010 NR1, 2010 NG3
H47Vicksburg Obs. in Mississippi, 1 in MPEC 2010-S17 -- 2212
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 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 SDJPL Sentry1528R E M O V E DJPL: Risk listing removed at 0952 UTC.
NEODyS1528R E M O V E D-
2010 RD130JPL Sentry1528R E M O V E DJPL: Risk listing removed at 0951 UTC.
NEODyS1528R E M O V E D-
2010 RC130JPL Sentry1528R E M O V E DJPL: Risk listing removed at 0950 UTC.
NEODyS1528R E M O V E D-
2010 RA91JPL Sentry1528209811.2e-09-8.47-8.470JPL: "Analysis based on 42 observations spanning 4.1915 days (2010-Sep-13.19605 to 2010-Sep-17.38751)." Diameter approximately 0.070 km. from mean, weighted H=23.4.
NEODyS1528R E M O V E D-
2010 RM80JPL Sentry15282085-2110211.8e-05-6.64-7.200JPL: "Analysis based on 41 observations spanning 6.0418 days (2010-Sep-11.28495 to 2010-Sep-17.326714)." Diameter approximately 0.009 km. from mean, weighted H=28.0.
NEODyS1528208514.5e-07-8.13-8.130NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2010/09/11.286 to 2010/09/17.327."
2010 RK53NEODyS1528R 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 18 September '10

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

2203Grabbed MPEC 2010-S20 - 2010 ST3 - see above
2200Grabbed MPEC 2010-S18 - 2010 SR3 - see above
Grabbed MPEC 2010-S19 - 2010 SS3 - see above
1528Noted that JPL Sentry has updated its 2010 RA91 risk assessment - see above
Noted that NEODyS has removed 2010 RA91 as an impact risk - see above
Noted that JPL Sentry has removed 2010 RC130 as an impact risk - see above
Noted that NEODyS has removed 2010 RC130 as an impact risk - see above
Noted that JPL Sentry has removed 2010 RD130 as an impact risk - see above
Noted that NEODyS has removed 2010 RD130 as an impact risk - see above
Noted that NEODyS has removed 2010 RK53 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 RM80 risk assessment - see above
Noted that NEODyS has updated its 2010 RM80 risk assessment - see above
Noted that JPL Sentry has removed 2010 SD as an impact risk - see above
Noted that NEODyS has removed 2010 SD as an impact risk - see above
Grabbed MPEC 2010-S17 - Daily Orbit Update - see above
0442Grabbed MPEC 2010-S16 - 2010 SP3 - see above