The A/CC news pages will probably 
not update again until Sept. 30th.

These A/CC news pages will probably not update again until sometime Friday, September 30th UTC. This is only the second planned down time since we began publishing daily news of Solar System small objects over nine and half years ago. NEOCP counts and probably some interim impact risk ratings will be lost, but all MPECs and observer credits will be posted when news reporting resumes.


Contents  on 26 September '11

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 26 September '11

The MPC's NEO Confirmation Page has 38 listings

When last checked at 1731 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 38 objects listed. Of these, seventeen were "one nighters." The Tracking News counted a total of 49 listings on the NEOCP on this day.

New MPECs  on 26 September '11

Minor Planet Electronic Circulars

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


MPEC 2011-S78 - "19:25 UT" - 2010 PU75


MPEC 2011-S77 - "16:54 UT" - 2011 SW71


MPEC 2011-S76 - "16:52 UT" - 2011 SV71


MPEC 2011-S75 - "16:50 UT" - 2011 SU71


<< DOU on 26 Sept. '11 >>  MPEC 2011-S74 - "06:03 UT" - Daily Orbit Update


MPEC 2011-S73 - "05:34 UT" - 2011 SP70


MPEC 2011-S72 - "00:38 UT" - 2011 SR69

Observers  on 26 September '11

A total of 31 observers appeared in this day's MPECs.

CodeObserver / observatory
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2011-S74 -- 7341
A74Bergen-Enkheim Obs. in Germany, 2 in MPECs 2011-S72 & 2011-S74 -- 2011 SR69, 2001 SF286
703Catalina Sky Survey (CSS) in Arizona, 5 in MPECs 2011-S72 & 2011-S74 -- 2011 SR69, 2011 RJ1, 2011 RF, 2000 BO28, 138155
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 8 in MPECs 2011-S73, 2011-S74, 2011-S76 & 2011-S77 -- 2011 SW71, 2011 SV71, 2011 SR26, 2011 SP70, 2011 SP32, 2011 SP12, 2011 SK16, 2011 SH16
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2011-S74 -- 4503
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2011-S74 -- 2011 SZ21
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 3 in MPECs 2011-S75, 2011-S76 & 2011-S77 -- 2011 SW71, 2011 SV71, 2011 SU71
C73Galati Obs., 2 in MPEC 2011-S74 -- 96189, 16834
A17Guidestar Obs. in Germany, 6 in MPEC 2011-S74 -- 2011 SR25, 2011 SJ16, 2011 SE58, 2011 RR12, 2011 RF, 2006 SQ78
240Herrenberg Obs. in Germany, 1 in MPEC 2011-S74 -- 283457
A35Hormersdorf Obs. in Germany, 8 in MPEC 2011-S74 -- 2011 SS25, 2011 SO32, 2011 SF25, 2011 RR12, 2011 RJ1, 2011 QE38, 2011 PT1, 2011 LJ19
H15ISON-NM Obs. in New Mexico, 2 in MPEC 2011-S74 -- 2011 OQ5, 2008 RG1
046Klet Obs. in the Czech Republic, 5 in MPEC 2011-S74 -- 2011 SS25, 2011 SQ12, 2011 QY39, 2011 QE38, 2011 OV4
704LINEAR in New Mexico, 9 in MPECs 2011-S72 & 2011-S74 -- 2011 SR69, 2011 SR25, 2011 SJ16, 2011 OQ5, 2008 RG1, 2004 SV55, 285625, 138155, 137799
304Las Campanas Obs. in Chile, 1 in MPEC 2011-S78 -- 2010 PU75
C01Lohrmann Obs. in Germany, 1 in MPEC 2011-S74 -- 138524
844Los Molinos Obs. in Uruguay, 3 in MPEC 2011-S74 -- 2011 EZ78, 2007 PH25, 2006 UQ217
560Madonna di Dossobuono Obs. in Italy, 5 in MPEC 2011-S74 -- 2011 SR5, 2011 LJ19, 2011 GA55, 2006 SV134, 2000 AB6
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2011-S74 & 2011-S75 -- 2011 SZ21, 2011 SU71
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2011-S75 -- 2011 SU71
A13Naef Obs. in Switzerland, 1 in MPEC 2011-S74 -- 152942
A24New Millennium Obs. in Italy, 22 in MPEC 2011-S74 -- 2011 SR5, 2011 OV4, 2011 LJ19, 2011 KN9, 2011 GA55, 2006 SV134, 2000 DQ110, 2000 AB6, 85818, 85804, 37336, 288914, 276274, 275545, 20086, 190135, 16960, 163760, 159399, 8567, 3200, 433
089Nikolaev Obs. in the Ukraine, 6 in MPEC 2011-S74 -- 2011 OV4, 2011 GA55, 2009 AV, 2000 SP43, 174050, 138524
C47Nonndorf Obs., 3 in MPEC 2011-S74 -- 2011 PT1, 2011 LJ19, 2000 SP43
F51Pan-STARRS 1 (PS1) in Hawaii, 9 in MPECs 2011-S73, 2011-S74, 2011-S75, 2011-S76 & 2011-S77 -- 2011 SW71, 2011 SV71, 2011 SU71, 2011 SU67, 2011 SP70, 2011 QA14, 2001 TD45, 138155, 101955
H36Sandlot Obs. in Kansas, 1 in MPEC 2011-S72 -- 2011 SR69
204Schiaparelli Obs. in Italy, 2 in MPECs 2011-S72 & 2011-S73 -- 2011 SR69, 2011 SP70
291Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2011-S73 & 2011-S74 -- 2011 SP70, 2011 SG5, 2011 SB25
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2011-S74 -- 2011 SK68
B01Taunus Obs. in Germany, 1 in MPEC 2011-S74 -- 2011 SR25
A48Verona Obs. in Italy, 3 in MPEC 2011-S74 -- 2011 SR5, 2011 LJ19, 2011 HC36
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 26 September '11

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 1731 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 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
2011 SE58NEODyS15102032-205541.8e-06-6.81-6.960NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2011-09-23.289 to 2011-09-25.906."
2011 SR5NEODyS1510R 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 26 September '11

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

2331 9/29Grabbed MPEC 2011-S78 - 2010 PU75 - see above
1731Grabbed MPEC 2011-S75 - 2011 SU71 - see above
Grabbed MPEC 2011-S76 - 2011 SV71 - see above
Grabbed MPEC 2011-S77 - 2011 SW71 - see above
1510Noted that NEODyS has posted 2011 SE58 as an impact risk - see above
Noted that NEODyS has removed 2011 SR5 as an impact risk - see above
Grabbed MPEC 2011-S73 - 2011 SP70 - see above
Grabbed MPEC 2011-S74 - Daily Orbit Update - see above
0047Grabbed MPEC 2011-S72 - 2011 SR69 - see above