Contents  on 1 November '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 1 November '11

The MPC's NEO Confirmation Page has 14 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had fourteen objects listed. Of these, eight were "one nighters." So far The Tracking News has counted a total of 26 listings on the NEOCP 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 1 November '11

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been seven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts. No Daily Orbit Update DOU MPEC has been posted yet, so visit the MPC Status Page for possible explanation.


MPEC 2011-V07 - "19:55 UT" - 2011 UC276


MPEC 2011-V06 - "19:53 UT" - 2011 UB276


MPEC 2011-V05 - "19:51 UT" - 2011 UA276


MPEC 2011-V04 - "19:50 UT" - 2011 UZ275


MPEC 2011-V03 - "19:47 UT" - 2011 UY275


MPEC 2011-V02 - "19:45 UT" - 2011 UX275


MPEC 2011-V01 - "00:13 UT" - 2011 UG256

Observers  on 1 November '11

Fourteen observers appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2011-V01 -- 2011 UG256
H21Astronomical Research Obs. Westfield in Illinois, 4 in MPECs 2011-V01, 2011-V02, 2011-V05 & 2011-V06 -- 2011 UX275, 2011 UG256, 2011 UB276, 2011 UA276
703Catalina Sky Survey in Arizona, 1 in MPEC 2011-V04 -- 2011 UZ275
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2011-V04 -- 2011 UZ275
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 3 in MPECs 2011-V02, 2011-V05 & 2011-V06 -- 2011 UX275, 2011 UB276, 2011 UA276
A17Guidestar Obs. in Germany, 1 in MPEC 2011-V01 -- 2011 UG256
B86Hagen Obs. in Germany, 1 in MPEC 2011-V01 -- 2011 UG256
900Moriyama Obs. in Japan, 1 in MPEC 2011-V04 -- 2011 UZ275
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2011-V02, 2011-V03, 2011-V05, 2011-V06 & 2011-V07 -- 2011 UY275, 2011 UX275, 2011 UC276, 2011 UB276, 2011 UA276
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2011-V04 -- 2011 UZ275
H36Sandlot Obs. in Kansas, 2 in MPECs 2011-V04 & 2011-V06 -- 2011 UZ275, 2011 UB276
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2011-V01 -- 2011 UG256
291Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2011-V01, 2011-V02, 2011-V05, 2011-V06 & 2011-V07 -- 2011 UX275, 2011 UG256, 2011 UC276, 2011 UB276, 2011 UA276
B18Terskol Obs. in Russia, 3 in MPECs 2011-V02, 2011-V04 & 2011-V06 -- 2011 UZ275, 2011 UX275, 2011 UB276
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 November '11

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 CLOMON2 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 UZ255NEODyS16362066-207254.26e-06-4.62-4.690NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2011-10-30.447 to 2011-10-31.435."
2011 UW255NEODyS16362043-2089184.51e-08-6.60-7.250NEODyS: "Based on 22 optical observations (of which 2 are rejected as outliers) from 2011-10-30.161 to 2011-10-31.165."

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 1 November '11

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

2016Grabbed MPEC 2011-V02 - 2011 UX275 - see above
Grabbed MPEC 2011-V03 - 2011 UY275 - see above
Grabbed MPEC 2011-V04 - 2011 UZ275 - see above
Grabbed MPEC 2011-V05 - 2011 UA276 - see above
Grabbed MPEC 2011-V06 - 2011 UB276 - see above
Grabbed MPEC 2011-V07 - 2011 UC276 - see above
1636Noted that NEODyS has posted 2011 UW255 as an impact risk - see above
Noted that NEODyS has posted 2011 UZ255 as an impact risk - see above
0028Grabbed MPEC 2011-V01 - 2011 UG256 - see above